FA5550 Fuji Electric holdings CO.,Ltd, FA5550 Datasheet
FA5550
Related parts for FA5550
FA5550 Summary of contents
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... Fuji Switching Power Supply Control IC FA5550 / 51 Application Note Rev.1 Feb-2008 FA5550 / 51 February 2008 Fuji Electric Device Technology Co.,Ltd. Fuji Electric Device Technology 1 ...
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... 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. Rev.1 Feb-2008 FA5550 / 51 Caution - Communication equipment (Terminal) - Home appliance - Communication equipment for trunk line - Various equipment for the safety ...
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... In using these components, a design with due consideration for these conditions shall be conducted. Rev.1 Feb-2008 FA5550 / 51 Contents ・・・・・・・・・・・・・・・・・ 4 ・ ...
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... Overview FA5550/51 are control ICs for power factor correction converter with continuouse conduction mode (CCM) of operation. Low power consumption is achieved by using high withstand voltage CMOS processes. 2. Features ・CCM PFC controller with few external components ・low power consumption by using high withstand voltage CMOS processes ・ ...
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... Error amplifier compensation pin 3 MUL Multiplier input 4 IS Current sense input 5 SLOPE SLOPE compensation pin 6 GND Ground 7 OUT Output 8 VCC Power supply Rev.1 Feb-2008 FA5550 / 51 MUL 3 VREF(2.5V) VDD(5.0V) VOVP(1.09VREF) REF VZCD(1.5V/1.33V) MUL VOS(2.0V) VBO (1.237V/1.113V) AOC + - R OSC S SLOPE 4 ...
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... Item Symbol OVP threshold voltage (high) Vthovph OVP threshold voltage (low) Vthovpl 4) FB short circuit detection comparator (FB pin) Item Symbol Input threshold voltage Vthsht Pull-up current Ipullup Rev.1 Feb-2008 FA5550 / 51 Symbol Icc+Iz Vcc Io Vin Pd1 Pd2 Ta Tj Tstg Symbol Condition Vcc ...
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... Item Symbol Output voltage (L) Output voltage (H) Output rise time Output fall time 9) Slope compensation (SLOPE pin) Item Symbol Slope compensation Slope increasing rate Slope_inc 0 Ω to 200kΩ Rev.1 Feb-2008 FA5550 / 51 Condition Min Vpin3 Vpin2 K Vpin3=0.5V Vpin2=Vthcomp +1.0 Condition Min Vpin3=1.763 Tphl ...
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... Symbol ON threshold voltage OFF threshold voltage Hysteresis width Vhys1 Vhys2 11) All devices (VCC pin) Item Symbol Zener voltage Start-up current Operating current Dynamic operating current Rev.1 Feb-2008 FA5550 / 51 Condition Min Von1 FA5550 Von2 FA5551 Voff FA5550 FA5551 Condition Min Vz Icc=25mA Istart Vcc=8 ...
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... CUR.comp MUL V 3 MUL t V （Sin Ｗave） t (Sin Wave) COMP (Approximately DC) Fig.3 Images of operating waveforms in each part Rev.1 Feb-2008 FA5550 / 51 AC MUL ). When V reaches the IS IS OUT (Q1gate) Q1 Vds IL1 CUR.comp Output (reset) OSC output (set) Fig.2 Switching operation; waveforms of each part ...
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... ON/OFF with external signals ・ How to connect: Pull down COMP pin with an external signal. ・ Operation By pulling down COMP pin lower than VthCOMP, the output pulse from the IC is interrupted. Rev.1 Feb-2008 FA5550 / 51 Vout Fig.5 FB pin circuit ERRAMP Fig ...
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... Rs. The large surge current may result in malfunction and distortion of the input current waveform. CR filters are usually connected as the measure. Rev.1 Feb-2008 FA5550 / 51 Fig.8 MUL pin circuit IS 4 Fig.9 IS pin circuit IS 4 Fig ...
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... The rated output currents of the IC are 1A at the source and 2A at the sink. In connections shown in Figures 13 and 14, gate driving currents of MOSFET for ON and OFF can be set independently. Rev.1 Feb-2008 FA5550 / 51 SLOPE IS Fig.11 SLOPE pin circuit VCC 8 ...
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... IC, needs to be supplied just before of start-up. During the usual operation, VCC is supplied with the subsidiary coil of the inductor. When the power supply voltage is increasing from 0V, FA5550 starts to operate at the voltage of 9.6V (typ) and FA5551 at the voltage of 13V (typ). Both ICs stop to operate at the voltage of 9V (typ) when the power supply voltage is decreasing after start-up of the operation ...
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... For direct connection of SLOPE pin to GND, the slope compensation value of 24.5mV/us is obtained. (1-3) Brownout protection FA5550/51 detect the AC input voltage using MUL pin voltage. When the AC input voltage decreases, protection circuit is activated to stop the output of the IC. For resistors connected to MUL pin, 10kΩ and 790kΩ are recommendable for R ...
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... Ld Lu > Where; Lu: Slope inclination of inductor current during ON-period Ld: Slope inclination of inductor current during OFF- period Kc: Inclination of slope compensation Rev.1 Feb-2008 FA5550 / Fig.20 A case without slope compensation ON OFF T Fig.21 A case with slope compensation IL Slope : Lu Fig.22 Slope compensation ...
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... Application circuit example 430k 360k 22k 0.01uF 10k 0.01uF 4700pF 0.47uF Rev.1 Feb-2008 FA5550 / 51 200uF 500uF FMA20N50E FMA20N50E 0.47uF 0.47uF 47k ERA91-02 ERA91- VCC COMP OUT MUL GND IS SLOPE FA5550 330k 330 16 YG972S6R 400V 680k 470k 440uF (220uF*2) 47k 470k 0 ...