FA5558 Fuji Electric holdings CO.,Ltd, FA5558 Datasheet
FA5558
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... Fuji Switching Power Supply Control IC Green Mode PWM IC FA5558/87/88/89 FA5581/82/83/84 Application Note AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 December-2008 Fuji Electric Device Technology Co., Ltd. 1 Fuji Electric Device Technology ...
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... Co.,Ltd sales agent before using our products. Fuji Electric Device Technology Co.,Ltd. and its sales agents shall not be liable for any damage that is caused by a customer who does not follow the instructions in this cautionary statement. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Caution - Communication equipment (Terminal) - Home appliance - Communication equipment for trunk line - Various equipment for the safety ...
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... Before use, a design with due consideration for these variations and conditions shall be conducted. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Contents ・・・・・・・・・・・・・・・・・ ...
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... Overview FA5558/87/88/89/81/82/83/ current mode type switching power supply control IC possible to drive a power MOSFET directly. Despite of a small package with 8 pins, it has a lot of functions and it is best suited for power saving at the light load and decreasing external parts. Moreover it enables to realize a reduced space and a high cost-performance power supply ...
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... Block diagram FA5558/88/82/84 (Overload Protection : Auto-Recovery type) Start up Current VH UVLO Latch Reset Freq control input 5V FB × INV. AMP Lv. Shift CT Reset OLP + - T1:Delay time to OLP-stop T2:Time to OLP-stop IS VCC OVP + 5V - LAT LAT - + GND FA5587/89/81/83 (Overload Protection : Timer Latch type) Start up Current VH UVLO ...
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... IS pin voltage LAT pin voltage VH pin input voltage Total loss (Ta = 25℃) Junction temperature in operation Storage temperature ○Allowable loss reduction characteristics 800mW (DIP) 400mW (SOP) 0 -30 AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Pin function Symbol VCC Ioh Iol VOUT VFB VIS VLAT VVH Pd ...
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... RVH 2 CLAT 0.22 CVCC 10 Ta -30 Conditions FA5558/87 VFB=3V FA5583/84 FA5588/89 FA5581/82 VCC：11V to 24V Tj= -30 to 125℃ FA5558/87 kf Δf/ΔVfb FA5583/84 FA5588/89 FA5581/82 Conditions FA5558 LAT=1.1V FA5588/89 Charge period FA5581/82 FA5583/84 FA5587 7 TYP MAX Unit 450 V (DC) 288 V (AC) 288 V (AC) ...
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... Vthovp threshold voltage AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Conditions FB=4.5V FB=0V DUTY=0% VFB=0V Conditions VFB=4V FA5558/88 VFB=4V FA5582/84 Conditions FA5558/87 ΔVFB/ΔVIS FA5588/89 FA5581/82 FA5583/84 FA5558/87 VFB=3V FA5588/89 FA5581/82 FA5583/84 VIS=0V Steady Start/Restart Tj=25℃ Conditions Vhys Tj=25℃ 8 MIN TYP MAX Unit － ...
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... Brown-out Delay time TpdBO VCCBH VCC voltage at Brown‐out VCCBL VCCLH VCC voltage at Ｌａｔｃｈ VCCLH VCCLL Charge current for VCC pin AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Conditions IOL=100mA, VOL VCC=18V IOH= -100mA, VOH VCC=18V CL=1000pF, tr Tj=25℃ CL=1000pF , tf Tj=25℃ ...
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... Conditions Duty cycle=Dmax FA5558/87 VFB=2V, FA5583/84 FA5588/89 OUT=No Load FA5581/82 Duty cycle=0% FA5558/87 VFB=0V FA5583/84 FA5588/89 FA5581/82 FB=open,VH=80 FA5558/87 FA5583/84 V, VCC=14.5V FA5588/89 FA5581/82 FA5558/87 FB=open, ICClat VCC=11V FA5583/84 FA5588/89 FA5581/82 OUT：No Load Icc=2mA 10 MIN TYP MAX Unit 1.0 1.3 1.6 mA (1.2) (1.5) (1. ...
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... FA5558/87/88/89 FA5581/82/83/84 FA5558/87 FA5583/84 100 150 Oscillation Frequency (Fosc) vs. Power supply voltage (VCC 100 150 5 10 Oscillation Frequency (Fosc) changing rate vs. Power supply voltage (VCC) 0.2 0.1 0 -0.1 -0 FA5558/87 FA5583/ VCC ( VCC (V) Fuji Electric Device Technology ...
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... Tj (℃) FB pin input resistance (Rfb) vs. Junction temprature (Tj - (℃) AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 LAT pin source current (Ilat) vs. Junction temperature (Tj) -64 -66 -68 -70 -72 -74 -76 100 150 -50 0 Output shutdown threshold voltage (VthFB0) vs. Junction temperature ...
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... Minimum ON width (Tmin) vs. Junction tmperature (Tj) 1400 1350 1300 1250 1200 1150 1100 -50 UVLO activate threshold voltage (VCCoff) vs. Junction temperature (Tj) 10.2 10.0 9.8 9.6 9.4 100 150 -50 13 FA5558/87 FA5588/ 100 150 Tj (℃ 100 150 Tj (℃ 100 150 Tj (℃) Fuji Electric Device Technology ...
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... Tj (℃) VCC pin capacitance charge current (Ipre2) vs. Junction temperature (Tj - (℃) AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Output voltage high level (VOH) vs. Junction tmperature (Tj -50 100 150 VH pin input current (IHstb) vs. Junction temperature (Tj) 9 IL=-100mA ...
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... VCC pin voltage (VCC) 1.6 FA5558/87 1.5 FA5583/84 1.4 1.3 1.2 1.1 1 VCC (V) Latch power supply current (ICClat) vs. Junction temperature (Tj) 1100 FA5558/87 1000 FA5583/84 900 800 700 600 - (℃) AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 100 150 VFB= VFB=open 100 150 15 Fuji Electric Device Technology ...
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... If the overload or overvoltage protection is actuated, causing the IC to enter the latch AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 mode, the one time clamp circuit discharges the VCC voltage immediately down to 14.5V (typ). This function interrupts the AC input voltage and shortens the latch mode reset (by the UVLO reset function) time ...
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... VthIS1, is -0.95V, the output of the reverse amplifier is given precedence and thus the current comparator is reversed when the IS terminal voltage reaches -0.5V.) AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 the FB terminal Fig. 5 Current mode basic operation circuit block Fig. 6. Current mode basic operating timing chart 17 Fig ...
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... This comparator reverses its output when the FB terminal voltage decreases down to 400mV (typ), preventing a set pulse to be input to the PWM latch (F.F.). The output is thus maintained in Low state and switching is stopped. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 1shot output (set pulse) OUT pin ...
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... VCC voltage is kept within the 15.5V to 18V (typ) range. When auto reset wait time TdOLP2 has elapsed, the switching pulse is output for rebooting. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Output Voltage Output Current MOSFET Gate Fig. 10 Conceptual diagram of overload protection operation Fig ...
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... Frequency OLP counter Fig. 13 Typical overload/light load repetition timing chart AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 overload occurs before the counter is reset, the next overload delay time should be made shorter (70ms or shorter). Example: In the case of a load with which overload current period of 50ms and no-load period of 1s are repeated, overload protection occurs within the overload delay time (70ms or shorter) as shown in Fig ...
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... OSC OUT OUT T1 T1:Delay time to OLP-stop t1-t2+t3 = TdOLP (70ms) ( t1<TdOLP, t1>t2 ) Fig. 15 Overload protection timing chart (timer latch type) AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Fig. 14 Overload protection circuit (timer latch type) Stop Over load t3 21 Fuji Electric Device Technology VCCLHH=14.5V VCCLH=13V VCCLL=12V VOUT Over load detection (VthOLP= 3 ...
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... If the external latch shutdown function by the LAT terminal is not to be used, connect a capacitor only. Connect an NTC thermistor to the LAT terminal to use the overheat protective function. (See Fig.17) AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Fig. 17 Overheat protection function using a thermistor (9) Overvoltage protection circuit (VCC terminal) The IC integrates an overvoltage protection circuit for monitoring the VCC terminal voltage ...
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... While switching operation is suspended by the brown out function, the startup circuit is subjected to ON/OFF control to maintain the VCC voltage within the 15.5V to 18V (typ) range. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Fig. 19 Brown in and brown out detection circuit Brown IN Diod brige Half wave Secondary ...
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... To avoid this phenomenon, connect a capacitor whose capacitance does not allow VCC voltage to decrease down to the OFF threshold voltage on occurrence of short circuit of the load of the power circuit. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Fig. 21 VCC terminal circuit Fig. 22 VCC terminal voltage at startup voltages, and Fig ...
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... To perform latch shutdown with an external signal, connect a peripheral circuit, allowing the LAT terminal voltage to be kept below 1.0V. Fig.28 shows a typical circuit connection. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 Fig. 28 Latch shutdown function by an external (5) Feedback Fig.29 shows the circuit configuration of the FB terminal. ...
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... By connecting R8 and C7 in series and connecting them between IS-OUT terminals as shown in Fig.33, the Rs resistance can be set small, allowing the loss to be minimized. Example 4.7kΩ 100pF AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/ Fig terminal filter Fig. 31 Noise malfunction prevention (VCC terminal) Fig ...
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... Be sure to maintain the voltage to be applied to each terminal within the maximum absolute ratings. AN-025E Rev.0.1 December-2008 FA5558/87/88/89 FA5581/82/83/84 (11) Loss calculation To use the IC within its ratings, the loss of the IC may have to be found. However not feasible to measure loss directly ...
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... Caution VH Pin is connected to near by diode bridge(DS1) to avoid VH Pin’s surge voltage it happens by change of startup current when startup circuit repeats on-off operating. ・Part List Component Ｉｔｅｍ Type or Value IC1 IC FA5558/FA5587 (Fuji) IC2 IC TA76431F TR1 FET 2SK3677-01MR (Fuji) DS1 diode ...
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... Board Typical characteristic curves(FA5558/87) Input Power at NO-Load 0.30 0.25 0.20 0.15 0.10 0.05 0.00 50 100 150 200 Input Voltage[Vac] Efficiency vs. Output Power 92 115Vac Efficiency >= 87%(AVE Output Power[%] Output Voltage (Iout=3.6A 100 150 200 Input Voltage[Vac] AN-025E Rev.0.1 December-2008 ...