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HA16107P/fp, ha16108p/fp pwm switching regulator for high-performance voltage mode control description the ic products in this series are primary control switching regulator control ic? appropriate for obtaining stabilized dc voltages from commercial ac power. these ic? can directly drive power mos fet?, they have a timer function built in to the secondary overcurrent protection, and they can perform intermittent operation or delayed latched shutdown as protection operations in unusual conditions. they can be used to implement switching power supplies with a high level of safety due to the wide range of built-in functionality. functions 6.45 v reference voltage triangle wave generator error amplifier under voltage lockout protector pwm comparator pulse-by-pulse current limitting timer-latch current limitting (ha16107) on/off timer function (ha16108) soft start and quick shutdown output circuit for power mos fet driving
HA16107P/fp, ha16108p/fp 2 features operating frequencies up to a high 600 khz built-in pre-driver circuit for driving power mos fet built-in timer latch over-current protection function (ha16107) the ocl enables intermittent operation by an on/off timer for prevention of secondary overcurrent. (ha16108) the uvl function (under voltage lockout) is applied to both vin and vref. on/off reset: an auto-reset function which is based on the time constant of an external capacitor and observation of drops in vin. since the over-voltage protection function ovp (the tl pin) only observes voltage drops in vin, it is possible to use the ovp and on/off pin for independent purposes. built-in 34 v zener diode between vin and ground. ordering information typical threshold voltage product uvl1 ovp notes package HA16107P hi: 16.2 v 7.0 v timer latch protection dp-16 ha16107fp lo: 9.5 v fp-16da ha16108p hi: 16.2 v hi: 7.0 v on-off timer protection dp-16 ha16108fp lo: 9.5 v lo: 1.3 v (intermittent operation possible) fp-16da
HA16107P/fp, ha16108p/fp 3 pin arrangement v in out cl(+) v e cl( - ) r t1 c t r t2 tl, on/off e/o in( - ) nc gnd in(+) st vref (top view) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 note 1 note 2 notes: 1. 2. in the sop package models (ha16107fp and ha16108fp) pins 4, 5, and 13 are connected inside the ic. however, all must be connected to the system ground. pin 16 is tl (ha16107), on/off (ha16108). pin functions HA16107P, ha16108p pin no. symbol pin functions 1v in input voltage 2 out pulse output 3 cl (+) current limiter 4v e output ground 5 cl (? current limiter 6r t1 timing resistor (rising time) 7c t timing capacitor 8r t2 timing resistor (falling time) 9 vref reference voltage output 10 st soft start 11 in (+) error amp (+) input 12 gnd ground 13 nc nc 14 in (? error amp (? input 15 e/o error output 16 tl, on/off timer latch (ha16107), on/off (ha16108)
HA16107P/fp, ha16108p/fp 4 ha16107fp, ha16108fp pin no. symbol pin functions 1v in input voltage 2 out pulse output 3 cl (+) current limiter 4 gnd ground 5 gnd ground 6r t1 timing resistor (rising time) 7c t timing capacitor 8r t2 timing resistor (falling time) 9 vref reference voltage output 10 st soft start 11 in (+) error amp (+) input 12 gnd ground 13 gnd ground 14 in (? error amp (? input 15 e/o error output 16 tl, on/off timer latch (ha16107), on/off (ha16108)
HA16107P/fp, ha16108p/fp 5 block diagram 6.45 v zener type ref. voltage gen. uvl1 h l v l v h r s q tl 16 e/o 15 in ( - ) 14 nc 13 gnd 12 in (+) 11 st 10 vref 9 1 v in 2 out 3 cl (+) 4 v e 5 cl ( - ) 6 r t1 7 c t 8 r t2 16 a 4a on/off latch (v th = 7 v) o v p uvl2 h l 4 v 5 v uvl1 st triangle waveform uvl1 and uvl2 pulse-by-pulse latch q q r s out v e v c qclm ++ - pwm comparator current limiter triangle waveform osc triangle waveform latch reset pulse on duty pulse 3.4 v 10 a 34 v v in uvl2 vref vref error amp. ea + - 140 a 6.45 v zener type ref. voltage gen. uvl1 h l v l v h r s q on/off 16 e/o 15 in ( - ) 14 nc 13 gnd 12 in (+) 11 st 10 vref 9 1 v in 2 out 3 cl (+) 4 v e 5 cl ( - ) 6 r t1 7 c t 8 r t2 16 a 4a on/off latch (v th = 7 v) o v p uvl2 h l 4 v 5 v uvl1 st triangle waveform uvl1 and uvl2 pulse-by-pulse latch q q r s out v e v c qclm ++ - pwm comparator current limiter triangle waveform osc triangle waveform latch reset pulse on duty pulse 3.4 v 10 a 34 v v in uvl2 note: dotted lines apply to the sop package model (pins 4, 5, and 13: ground) vref vref error amp. ea + - 140 a HA16107P/fp ha16108p/fp
HA16107P/fp, ha16108p/fp 6 function and timing chart triangle waveform and pwm output v th 4.2 v typ triangle waveform is output to c t pin e/o c t v rt2 out 0 v 0 v v tl 2.2 v typ dead band t db t on i 1 = vref - 2v be r t1 c t r t1 2v vref - 2v be ? 0.4 c t r t1 (s) i 2 = 9 8 7 6 2 2 2 i 1 i 1 2i 2 i 2 r t1 c t vref (connected internally) - + - + comparator for triangle waveform oscillation 0.6 v the 2s are transistors whose emitter area is doubled. t db = r t2 2r t1 du max = r t2 2r t1 - r t2 t on ? t db 1 - du max t db f osc ? (s) (hz) note: when f osc is high, the actual value will differ from that given by the formula due to the delay time. determine the correct constants after constructing a test circuit. r t2 v rt2 2 timing chart (during normal operation) oscillator equivalent circuit v in 2v be vref - 2v be r t2
HA16107P/fp, ha16108p/fp 7 1. timing in normal operation timing in these ics is based on a triangular voltage waveform. the rising edge (leading edge) defines the deadband time t db . the falling edge (trailing edge) defines the on-duty control band t on . pwm output is on in the area within t on that is bounded above by the triangle wave v ct and error output v e/o . the following pin outputs are related to pwm control: c t (pin 7): triangle-wave voltage output e/o (pin 15): error output voltage r t2 (pin 8): on-duty pulse output voltage out (pin 2): pwm pulse output (for driving the gate of a power mos fet) 2. triangle oscillator, waveform and frequency the triangle oscillator in these ics generates a triangular waveform by charging and discharging timing capacitor c t with a constant current, as shown in the equivalent circuit. the c t charge current is: i(c tchg ) = i 1 = v ref - 2v be r t1 the discharge current is: i(c tdischg ) = 2i 2 - i 1 , where i 2 = v ref - 2v be r t2 in these equations vref (reference voltage) is typically 6.45 v, and v be (base-emitter voltage of internal transistors) is about 0.7 v. the deadband time is: + 0.8 m s c t r t1 2v v ref - 2v be t db = ? 0.4 c t r t1 + 0.8 m s the on-duty time is: r t2 2r t1 - r t2 t on = t db the 0.8 m s in these equations is a correction term for internal circuit delays. the maximum on-duty is r t2 2r t1 du max = the oscillating frequency is: 1 f osc = t db 1 - du max + 0.8 m s = 1 0.8 c t r t1 2 2r t1 - r t2 + 0.8 m s (hz) when r t1 = r t2 , the maximum on-duty is 50%, and: 1 0.8 c t r t1 + 0.8 m s f osc ? (hz) this approximation is fairly close, but it should be checked in-circuit.
HA16107P/fp, ha16108p/fp 8 3. programming of maximum on-duty (du max) the preceding equations should be used to program the deadband or maximum on-duty. the following table gives a summary. condition r t1 > r t2 r t1 = r t2 r t1 < r t2 triangle waveform du max less than 50% 50% greater than 50%* note: in a primary-control switching regulator, du max > 50% is dangerous because the transformer will saturate. soft start and quick shutdown one purpose of the soft-start function is to protect the switching controller and power mosfet from surges at power-up. another purpose is to let the secondary-side dc voltage rise smoothly. when power goes off, the quick-shutdown function rapidly discharges the capacitor in the soft-start circuit (and at the same time switches the pwm output off) to prepare for the next power-on. the soft-start function in these ics lets the pwm output develop smoothly from zero to the designated pulse width at power-up. the soft-start voltage is the 3.8 v voltage value of an internal zener diode, so the pwm output is able to start widening gradually as soon as the soft-start function starts operating. the soft- start function will start promptly even if c st is large. the soft-start and quick-shutdown modes are selected automatically in the ic, under control of the uvl signal.
HA16107P/fp, ha16108p/fp 9 level determined by transformer timing waveforms 16.2 v 9.5 v 6.45 v 5 v 4 v 0 v v in (time t) normal operation soft start v in v st v ct c st discharge st quick shutdown v e/o 4.2 v 3.8 v 2.2 v 0 v 0 v v ct , v st , v e/o v out (pwm pulse) + + - vref from vref from uvl2 (effective for quick shutdown) pwm comparator v ct e/o 15 7 10 9 10 m a zener diode 3.8 v vref c st st note: the soft-start time constant is determined by c st and the constant-current value (typically 10 m a). vref vref v in
HA16107P/fp, ha16108p/fp 10 vref protection functions: overvoltage and undervoltage vref overvoltage and undervoltage conditions are detected by the overvoltage detection circuit and uvl2 circuit. pwm output shuts down when vref 3 8 v. uvl2 detects undervoltage with hysteresis between approximately 4 v and 5 v. pwm output also shuts down below these voltages. it follows that pwm output will shut off whenever the vref pin is shorted to the power supply (v in ) or ground (gnd). pwm output also shuts off when v in is turned on or off. the following diagram shows how these protection functions operate when power comes on and goes off (vref < 6.45 v), and when a high external voltage is applied to the vref pin (vref > 6.45 v). pwm output shut- down region pwm output operating region power-off, or shorted to ground pwm out pwm output shut-down region power-up shorted to power supply 0 4 v 5 v 6.45 v 8 v 10 v uvl2 vref ovp vref 1. current-limiter circuit the current limiter pin (cl) is connected to the emitter of an npn transistor, as shown in the block diagram. the threshold voltage is 240 mv typ. the switching speed of this circuit is approximately 100 ns from detection of overcurrent to shut-down of pwm output. switching speed increases with the strength of the signal input to the cl pin. instead of simple pulse-by-pulse current limiting, in these ics the current limiting circuit is linked to the timer-and-latch or on/off timer circuit, and also detects the degree of overcurrent. the overcurrent value is determined from the point at which current limiting is triggered in the on-duty cycle. with a large overcurrent (causing current limiting to operate even at a small on-duty), the ic automatically shortens the timer time.
HA16107P/fp, ha16108p/fp 11 undervoltage lockout and pwm output the undervoltage lockout function turns off the pwm pulse output when the controller? supply voltage goes below a designated value. these ics have two undervoltage lockout circuits. the uvl1 circuit senses the supply voltage v in . the uvl2 circuit senses the vref voltage. a feature of these ics is that pwm output is turned on only when both voltages are above designated values. otherwise, the ic operates in standby mode. the two built-in undervoltage lockout circuits make it possible to configure an extremely safe power supply system. pwm output will shut down under a variety of abnormal conditions, such as if vref is shorted to ground while v in is applied. 0 10 v 20 v 30 v 34 v i in 9.5 v 16.2 v * 1 0 10 v 20 v 30 v * 2 6.45 v notes: 1. 2. breakdown voltage of the internal zener diode (v z = 34 v typ). hysteresis characteristic. 0 10 v 20 v 30 v vref 6.45 v 0 10 v 20 v 30 v out 5 v 4 v pwm output shut-down region operating region v in v in v in v in v in (uvl1) vref (uvl2) pwm out standby mode note: double circles indicate standby mode. l l l h l l h h out ? l h l uvl1 (v in and vref) uvl2 (vref and pwm output) uvl1 and uvl2 vref
HA16107P/fp, ha16108p/fp 12 timer latch and on/off timer the ha16107 has a built-in timer-latch function. the ha16108 has a built-in on/off timer function. the timer-latch function is an overvoltage protection function that combines latched shutdown of pwm output with a timer function to vary the time until latched shutdown occurs according to the overcurrent value. a dedicated voltage detection pin is provided in addition to vref overvoltage protection. the on/off timer function is equivalent to the above timer-latch function without the latch. if overcurrent is detected continuously, pwm output shuts down temporarily, then normal operation resumes. this process repeats, temporary shutdown alternating with normal operation. both the timer-latch function in the ha16107 and the on/off function in the ha16108 wait for an interval after overcurrent detection before shutting down pwm output. the interval is determined by capacitor c tm and the value of the charge/discharge current supplied internally from the ic. normal operation therefore continues if a single overcurrent spike is detected, while if continuous overcurrent is detected, the current and voltage droop curves for the secondary-side output have sharp characteristics. 1. use of timer-latch pin (ha16107) timer-latch usage see external circuit 1 in the following diagram. under continuous overcurrent, the cml switch turns on, charging c tm with 12 m a. pwm output shuts down when the voltage at pin 15 exceeds 7 v. overvoltage protection usage see external circuit 2 in the diagram. this configuration is suitable when overvoltage is detected by an ovp signal received through an optocoupler from the dc output on the secondary side of an ac/dc converter. pwm output shuts down when the ovp signal allows the voltage at the tl pin to exceed 7 v. the shutdown is latched. v in must go below approximately 6.5 v (v inr2 ) to release the latched state. c tm 15 16 m a 4 m a from cml ovp with latch timer ha16107 v in ovp signal (from secondary) external circuit 1 t l v th latch (pwm output shuts down) 7.0 v 0 v v tl a b t ocl detected continuously (activating pulse-by-pulse current limiter) notes: 1. 2. 3. the latch function is cleared when v in goes below approximately 7.0 v. path a is followed if the ocl input stops before v th is reached. path b is followed if ocl is detected continuously until the latch point is reached. external circuit 2
HA16107P/fp, ha16108p/fp 13 2. use of on/off timer pin (ha16108) external circuit 16 16 m a 4 m a from cml ovp with latch timer ha16108 ion ioff + on/off timer operation v thh 7.0 v 0 v t 1.2 v v thl t off t on ocl detected (pwm output on) pwm output shut down ocl detected (pwm output on) pulse-by-pulse current limiting notes: 1. 2. 3. 4. t on ? c 5.8 v (0.9 - du) 16 m a - 4 m a t off ? c 5.8 v 4 m a c is the capacitance of an external timing capacitor connected between this pin and ground. du is the on-duty of the pwm output when overcurrent limiting is triggered. the values of t on and t off for tl can be determined by the same equations as given for the on/off timer, except that 5.8 v (v thh - v thl ) becomes v thh = 7 v. if the timer goes off during soft start or in the undervoltage lockout region, after recovery, output will come on after the soft-start time or after the rise time to the undervoltage lockout release point, which is determined by the time constant.
HA16107P/fp, ha16108p/fp 14 absolute maximum ratings (ta = 25?) item symbol rating value units notes supply voltage v in 30 v output current (dc) i o 0.2 a output current (peak) iopeak 2a current limiter voltage v cl +4, ? v error amp input voltage v iea vref v e/o output voltage v ie/o vref v r t1 pin current i rt1 500 m a r t2 pin current i rt2 5ma power dissipation p t 680 mw 1, 2 operating temperature range topr ?0 to +85 c storage temperature range tstg ?5 to +125 c notes: 1. for the ?p?products (sop package), this value is when mounted on a 40 by 40 by 1.6 mm glass epoxy substrate. however, this value must be derated by 8.3 mw/ c from ta = 45 c. when the wiring density is 10%, and 11.1 mw/ c from ta = 64 c when the wiring density is 30%. 2. for the ??products (dip package), this value is valid up to 45 c, and must be derated by 8.3 mw/ c above 45 c. 3. in the case of sop, use center 4 pins, (4), (5), (12), (13) for solder-mounting and connect the wide ground pattern, because these pins are available for heat sink of this ic. 700 600 500 400 300 200 100 ?0 0 20 40 60 80 100 120 140 45 c64 c 30% wiring density 10% wiring density ambient temperature ta ( c) power dissipation p t (mw)
HA16107P/fp, ha16108p/fp 15 electrical characteristics (ta = 25?, v in = 18 v, f osc = 100 khz) section item symbol min typ max unit test conditions note reference output voltage vref 6.10 6.45 6.80 v voltage line regulation line 30 60 mv 12 v v in 30 v load regulation load 30 60 mv 0 ma i o 10 ma temperature stability d vref/ d ta 40 ppm/ c short circuit current i os 30 50 ma vref = 0 v over voltage protec- tion (vref ovp voltage) vrovp 7.4 8.0 9.0 v triangle maximum frequency fmax 600 khz wave minimum frequency fmin 1 khz generator voltage stability d f/fo 1 1 3 % 12 v v in 30 v fo 1 = (fmax + fmin)/2 temperature stability d f/fo 2 1 % ?0 c ta +85 c fo 2 = (fmax + fmin)/2 frequency accuracy f osc 270 300 330 khz r t1 = r t2 = 27 k w c t = 120 pf pwm comparator minimum deadband pulse width t db 1.0 m s low level threshold voltage v tl 1.9 2.2 2.5 v high level threshold v th 3.8 4.2 4.6 v differential threshold d v th 1.7 2.0 2.3 v deadband width initial accuracy d db1 1 3% r t1 = r t2 = 27 k w c t = 470 pf deadband width voltage stability d db2 0.2 2.0 % 12 v v in 30 v (dmax ?dmin)/2 deadband width temperature stability d db3 1 % ?0 c ta +85 c (dmax ?dmin)/2 error amp input offset voltage v io 2 10 mv input bias current i ib 0.8 2.0 m a input sink current iosink 80 140 m av o = 2 v output source current iosource 80 140 m av o = 5 v
HA16107P/fp, ha16108p/fp 16 electrical characteristics (ta = 25?, v in = 18 v, f osc = 100 khz) (cont.) section item symbol min typ max unit test conditions note error amp (cont.) high level output voltage v oh vref 1.5 vi o = 10 m a low level output voltage v ol 0.5 v i o = 10 m a voltage gain g v 55 db f = 10 khz band width bw 15 mhz (? common mode voltage v cm 1.2 v (+) common mode voltage v cm + vref 1.5 v over- (+) threshold voltage v th + 0.216 0.240 0.264 v current (+) bias current i b + 180 250 m av cl + = 0 v detector (? threshold voltage v th ?.264 ?.240 ?.216 v 1, 2 (? bias current i b 950 1350 m av cl = ?.3 v 1, 2 response time t off 100 ns cl; open v cl = +0.35 v soft start high level voltage v sth 3.2 3.8 4.4 v isink = 1 ma sink current isink 7 10 13 m av st = 2.0 v under voltage v in high level thre- shold voltage v inth 14.7 16.2 17.7 v lockout 1 v in low level thre- shold voltage v intl 8.5 9.5 10.5 v threshold differential voltage d v th 5.2 6.2 7.2 v (v inth ?v intl ) under voltage vref high level thre- shold voltage v rth 4.5 5.0 5.5 v lockout 2 vref low level thre- shold voltage v rtl 3.5 4.0 4.5 v notes: 1. only applies to the HA16107P, ha16108p 2. the terminal should not be applied under ?.0 v.
HA16107P/fp, ha16108p/fp 17 electrical characteristics (ta = 25?, v in = 18 v, f osc = 100 khz) (cont.) section item symbol min typ max unit test conditions note timer latch, on/off latch threshold voltage v thh 6.5 7.0 7.5 v timer* 2 v in reset voltage v inr2 6.0 6.5 7.0 v reset voltage v thl2 1.0 1.3 1.6 v 1 differential threshold to uvl low voltage d v 2.0 3.0 v (v intl ?v inr2 ) source current (ocl mode) isource 8 12 16 m a over current detection mode sink current (latch mode) isink 2.5 4 5.5 m a tl(on/off) terminal = 4 v output low voltage v ol1 1.7 2.2 v iosink = 0.2 a high voltage v oh v in 2.2 v iosource = 0.2 a low voltage (standby mode) v ol2 0.5 v iosink = 1 ma rising time t r 40 ns c l = 1000 pf falling time t f 60 ns c l = 1000 pf total standby current ist 160 250 m av in = 14 v operation current i in1 1620mav in = 30 v, c l = 1000 pf, f = 100 khz operation current i in2 1216mav in = 30 v, f = 100 khz, output open on/off latch current i in3 350 460 m av in = 14 v v in ?gnd zener voltage v z 30 34 v notes: 1. only applies to the ha16108p/fp. 2. timer latch: HA16107P/fp. on/off timer: ha16108p/fp.
HA16107P/fp, ha16108p/fp 18 note on standby current in the test circuit shown in figure 1, the operating current at the start of pwm pulse output is the standby current. if the resistance connected externally to the vref pin (including r t2 ) is smaller than that of the test circuit, the apparent standby current will increase. v in c in i in vref rref ha16107 series - ist + - figure 1 standby current test circuit
HA16107P/fp, ha16108p/fp 19 application note case: when dc power is applied directly as the power supply of the ha16107/ha16108, without using the transformer backup coil. phenomenon: the ic may not be activated in the case of a circuit in which v in rises quickly (10 v/100 m s or faster), such as that shown in figure 2. reason: because of the ic circuit configuration, the timer latch block operates first. remedy (counter measure): take remedial action such as configuring a time constant circuit as shown in figure 3, to keep the v in rise speed below 10 v/100 m s. if the ic power supply consists of an activation resistance and backup coil, as in an ac/dc converter, the v in rise speed is usually around 1 v/100 m s, and there is no risk of this phenomenon occurring. input v in v in ha16107 series gnd feedback output figure 2 example of circuit with fast v in rise time input v in v in 18 v 1 m f c ha16107 series gnd feedback output r 51 w time constant circuit figure 3 sample remedial circuit
HA16107P/fp, ha16108p/fp 20 characteristic curves 0 10203040 10 20 30 40 ta = 25 c r t1 = r t2 = 27 k w c t = 470 pf f osc = 100 khz operating current (ma) operating current vs. power supply voltage latch current vs. power supply voltage 0 10203040 0.5 1.0 1.5 2.0 ta = 25 c r t1 = r t2 = 27 k w c t =470 pf f osc = 100 khz latch current (ma) power supply voltage (v) power supply voltage (v)
HA16107P/fp, ha16108p/fp 21 048 1620 100 200 300 400 12 024 810 5 10 15 20 6 ta = 25 c v in = 20 v c t = 470 pf standby current ( a) power supply voltage (v) output v oh (v) reference voltage (v) output v oh vs. reference voltage vref uvl 2 voltage vref ovp voltage ta = 25 c r t1 = r t2 = 27 k w c t =470 pf f osc = 100 khz standby current vs. power supply voltage
HA16107P/fp, ha16108p/fp 22 v cl (v) output off time vs. v cl 0102030 2 4 6 8 reference voltage (v) power supply voltage (v) ta = 25 c r t1 = r t2 = 27 k w c t =470 pf f osc = 100 khz 0 0.2 0.3 0.4 100 200 300 400 v cl output off time (ns) c l = 100 pf c l = unloaded ta = 25 c r t1 = r t2 = 27 k w c t =470 pf f osc = 100 khz reference voltage vs. power supply voltage
HA16107P/fp, ha16108p/fp 23 01 3 5 20 40 60 10 30 50 24 output on duty (%) error input voltage (v) output on duty vs. error input voltage ta = 25 c r t1 = r t2 = 27 k w c t =470 pf f osc = 100 khz
HA16107P/fp, ha16108p/fp 24 0 0.1 0.2 0.3 0.4 3.0 vref 0 0.1 0.2 0.3 0.4 3.0 pwm out 0 - 0.1 - 0.2 - 0.3 - 0.4 - 1.0 vref pwm out 0 - 0.1 - 0.2 - 0.3 - 0.4 - 1.0 reference voltage and pwm out vs. c l (+) reference voltage and pwm out vs. c l ( - ) c l (+) c l ( - )
HA16107P/fp, ha16108p/fp 25 30 40 50 60 70 5 10 15 20 80 ta = 25 c 0 r t1 r t2 - 1000 0 1000 2000 - 2000 - 20 0 25 50 75 85 timing resistance r t1, r t2 ( k w ) deadband duty (%) timing resistance vs. deadband duty temperature fluctuation vs. ambient temperature temperature fluctuation (ppm) ambient temperature ( c) v in = 18v r t1 = r t2 = 27 k w c t = 470 pf f osc = 100 khz v in = 18v c t = 470 pf f osc ? 100 khz
HA16107P/fp, ha16108p/fp 26 02550 85 - 5 0 5 10 75 - 20 - 10 02550 85 - 5 0 5 10 75 - 20 - 10 frequency variance (%) ambient temperature ( c) frequency variance vs. ambient temperature frequency variance vs. ambient temperature frequency variance (%) ambient temperature ( c) v in = 18v r t1 = r t2 = 27 k w c t = 120 pf f osc = 3 00 khz v in = 18v r t1 = r t2 = 27 k w c t = 470 pf f osc = 100 khz
HA16107P/fp, ha16108p/fp 27 02550 85 - 5 0 5 10 75 - 20 - 10 02550 85 - 5 0 5 10 v in = 18v 75 - 20 - 10 f = 100 khz f = 300 khz f = 600 khz frequency variance (%) output on duty variance (%) v in = 18v r t1 = r t2 = 13 k w c t = 120 pf f osc = 600 khz output on duty variance vs. ambient temperature ambient temperature ( c) ambient temperature ( c) frequency variance vs. ambient temperature
HA16107P/fp, ha16108p/fp 28 600 500 300 100 90 70 50 30 10 9 7 5 7 10 30 50 70 100 3300 pf 820 pf 470 pf 270 pf c t = 120 pf oscillator frequency (khz) timing resistance r t1 (= r t2 ) (k w) oscillator frequency vs. timing resistance v in = 18 v ta = 25 c
HA16107P/fp, ha16108p/fp 29 - 500 0 500 0 10 20 30 i o (ma) 200 ns/div - 500 0 500 0 10 20 30 i o (ma) vout (v) vout (v) vout output rising waveform vout output falling waveform 40 40 200 ns/div v in out cl (+) r t1 c t s t r t2 vref tl 1 f + + c st 1 f 27 k w 470 pf 27 k w 1000 pf c l i o current probe * current probe: tektronix am503 test circuit ta = 25 c r t1 = r t2 = 27 k w c t = 470 pf f osc = 100 khz
HA16107P/fp, ha16108p/fp 30 0 1 2 3 4 5 6 v tl (v) 0.5 sec/div 7 t on t off sw on sw off when overcurrent is input at the point where the duty cycle is 0%. 0 1 2 3 4 5 6 v tl (v) 7 when overcurrent is input at the point where the duty cycle is 30%. operating waveform at the tl pin output pulse shutdown region t on t off sw on sw off output pulse shutdown region a b a b 0.5 sec/div v in out cl(+) r t1 c t s t r t2 vref tl 1 m f + + c st 1 m f 27 k w 470 pf 1000 pf c l sw t2 t1 du = 100 (%) t1 t2 t v tl a b c t v tl test circuit triangle wave cl(+) when input at a duty of 0% cl(+) when input at a duty of 30% enlargement of section ctl discharged at 4 m a ctl discharged at 12 m a ctl discharged at 4 m a : pwm pulse output is high : the point where overcurrent is detected : pwm pulse output is low. a to b b b to c b enlargement of section a clock 27 k w v in = 18v ha16107 r t1 = r t2 = 27 k w c t = 470 pf f osc = 100 khz
HA16107P/fp, ha16108p/fp 31 out output pulse shutdown region triangle wave cl(+) when input at a duty of 0% cl(+) when input at a duty of 30% du = 100 (%) enlargement of section ctl discharged at 4 m a ctl discharged at 12 m a t 1 t 2 0.5 sec/div 0.5 sec/div sw off sw on on/off clock cl(+) r t1 t off t on t off t on t off t 1 t 2 t on + + c t v t tl c st c l v = 18v in r = r = 27 k? t1 t2 c = 470 pf t f = 100khz osc s 1 m f 1 m f t r 27 k? 27 k? 470 pf 1000 pf t2 operating waveform at the on/off pin 7 6 5 4 3 2 1 0 v on/off (v) b a output pulse shutdown region sw off sw on t off t on t off t on 7 6 5 4 3 2 1 0 v on/off (v) b a a a b a b b c c b enlargement of section ctl discharged at 4 m a to : pwm pulse output is high. : the point where overcurrent is detected. to : pwm pulse output is low. v t tl b v in test circuit ha16108 when overcurrent is input at the point where the duty cycle is 0%. when overcurrent is input at the point where the duty cycle is 30%.
HA16107P/fp, ha16108p/fp 32 error amplifier characteristic 10 k 0 20 40 180 90 0 a vo f 45 135 60 30 k 100 k 300 k 1 m input signal frequency f in (hz) open loop gain a vo (db) phase change f (deg) 3 m 10 m 30 m 100 m examples of drooping characteristics of power supplies using these ics normal operation 0 2.5 5.0 1 v out (dc) (v) 2 i out (dc) (a) i out (dc) (a) ha16107 (latch shut-down) 34 0 1234 pulse by pulse current limiter operation a heavy load b light load on on off off a a b b 2.5 5.0 v out (dc) (v) pulse by pulse current limiter operation a heavy load b light load latch state here ha16108 (intermittent operation by means of on/off timer)
HA16107P/fp, ha16108p/fp 33 operating circuit example ac input + - + + + - + + - + + - - - bridge diode 82 k w 1 w 51 w 40t 23t 1.5 w 3 w 50 v hzp 16 tl e/o in( - ) in(+) nc gnd st 1 m f 1 m f vref 110 w 51 w 27 k w HA16107P/fp 27 k w cl( - ) cl(+) v e r t1 r t2 c t v out in 470 pf 4700 pf 22 m f 16 v 330 k w 33k w 33k w 68 k w 510 k w 16 v 16 v 3.225 v 6.45 v 6.45 v zener type reference voltage generation circuit 34 v error amp. 3.4 v 10 m a 1 m f 6t 2sk1567 140 v el-30 trans former 470 m f 5 v output hrp 24 hrp 32 18.9 v schottky barrier diode hzp 16 start-up resistor current sense current sense l.p.f. ovp detector timerlatch capacitor phase comp. frequency, max, duty setting fosc = 100 khz, dumax = 50% flyback transforrmer application example (ic vref used as system as reference voltage) rfi filter 11 12 10 9 13 14 15 16 6 5 7 8 4 3 2 1 soft start cap. out v qclm c v vref vref uvl2 4 m a 16 m a 140 m a current limiter e qr qs r s q o v p uvl1 uvl1 uvl1&uvl2 pwm comparator triangle wave p{ulse by pulse latch on/off latch (v = 7v) st h l l th h v in v v uvl2 h l 4v 5v
HA16107P/fp, ha16108p/fp 34 ac input bridge diode power thermister 200 v 100 m f dfg1c8 hrw26f 47 m h 0.5 f 8 t * 0.5 f 8 t * 0.3 f 50 t 0.3 f 50 t 50 v 22 m f + e 16 v 1000 m f 3.3 m f 1.8 k w 4.7 k w b secondary error amplifier tlp521 * bifiler transfomer core size ei-30 equivalent product dc out (5 v) 330 w 3.3 k w + - + - + - + - hzp16 13 k w + + + 0.47 m f 1 w 82 k w 10 k w 1 m f 1 m f (start-up resistor) (soft start capacitor) - - - 13 k w 12345678 9 10 11 12 13 14 15 16 tl r b v out r t1 c t c t2 e/o in ( - ) cl (+) HA16107P/108p in (+) nc st vref 51 w 51 w 4700 pf 470 pf 110 w 2sk1567 3 w 1.5 w (current sense) (current sense filter) timer latch capacitor forward transformer application example ha17431p
HA16107P/fp, ha16108p/fp 35 v in r b ovp detector 1 m f + tl v in out cl(+) when ovp signal is inserted at cl(+) pin when the ovp detection zener diode turns on, latch shutdown of the output is performed after the elapse of the time determined by the capacitance connected the tl pin.
HA16107P/fp, ha16108p/fp 36 package dimensions hitachi code jedec eiaj mass (reference value) dp-16 conforms conforms 1.07 g unit: mm 6.30 19.20 16 9 8 1 1.3 20.00 max 7.40 max 7.62 0.25 + 0.13 ?0.05 2.54 0.25 0.48 0.10 0.51 min 2.54 min 5.06 max 0 ?15 1.11 max hitachi code jedec eiaj mass (reference value) fp-16da conforms 0.24 g unit: mm *dimension including the plating thickness base material dimension *0.22 0.05 *0.42 0.08 0.12 0.15 m 2.20 max 5.5 10.06 0.80 max 16 9 1 8 10.5 max + 0.20 ?0.30 7.80 0.70 0.20 0 ?8 0.10 0.10 1.15 1.27 0.40 0.06 0.20 0.04
HA16107P/fp, ha16108p/fp 37 cautions 1. hitachi neither warrants nor grants licenses of any rights of hitachi? or any third party? patent, copyright, trademark, or other intellectual property rights for information contained in this document. hitachi bears no responsibility for problems that may arise with third party? rights, including intellectual property rights, in connection with use of the information contained in this document. 2. products and product specifications may be subject to change without notice. confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. hitachi makes every attempt to ensure that its products are of high quality and reliability. however, contact hitachi? sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. design your application so that the product is used within the ranges guaranteed by hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail- safes, so that the equipment incorporating hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the hitachi product. 5. this product is not designed to be radiation resistant. 6. no one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from hitachi. 7. contact hitachi? sales office for any questions regarding this document or hitachi semiconductor products. hitachi, ltd. semiconductor & integrated circuits. nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100-0004, japan tel: tokyo (03) 3270-2111 fax: (03) 3270-5109 copyright ? hitachi, ltd., 1998. all rights reserved. printed in japan. hitachi asia pte. ltd. 16 collyer quay #20-00 hitachi tower singapore 049318 tel: 535-2100 fax: 535-1533 url northamerica : http:semiconductor.hitachi.com/ europe : http://www.hitachi-eu.com/hel/ecg asia (singapore) : http://www.has.hitachi.com.sg/grp3/sicd/index.htm asia (taiwan) : http://www.hitachi.com.tw/e/product/sicd_frame.htm asia (hongkong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm japan : http://www.hitachi.co.jp/sicd/indx.htm hitachi asia ltd. taipei branch office 3f, hung kuo building. no.167, tun-hwa north road, taipei (105) tel: <886> (2) 2718-3666 fax: <886> (2) 2718-8180 hitachi asia (hong kong) ltd. group iii (electronic components) 7/f., north tower, world finance centre, harbour city, canton road, tsim sha tsui, kowloon, hong kong tel: <852> (2) 735 9218 fax: <852> (2) 730 0281 telex: 40815 hitec hx hitachi europe ltd. electronic components group. whitebrook park lower cookham road maidenhead berkshire sl6 8ya, united kingdom tel: <44> (1628) 585000 fax: <44> (1628) 778322 hitachi europe gmbh electronic components group dornacher stra b e 3 d-85622 feldkirchen, munich germany tel: <49> (89) 9 9180-0 fax: <49> (89) 9 29 30 00 hitachi semiconductor (america) inc. 179 east tasman drive, san jose,ca 95134 tel: <1> (408) 433-1990 fax: <1>(408) 433-0223 for further information write to:
HA16107P/fp, ha16108p/fp 38 revision record rev. date contents of modification drawn by approved by 0.0 oct. 11, 1994 initial issue a. koizumi m. yamamura 0.1 oct. 11, 1994 initial issue a. koizumi m. yamamura 0.2 nov. 12, 1994 initial issue a. koizumi m. yamamura

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