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ICE1CS02 Datasheet(PDF) 8 Page - Infineon Technologies AG |
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ICE1CS02 Datasheet(HTML) 8 Page - Infineon Technologies AG |
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8 / 27 page  Version 1.0 8 25 July 2008 Combi PFC/ PWM Controller ICE1CS02 Representative Blockdiagram 2 Representative Blockdiagram Figure 2 Representative Blockdiagram ICE1CS02 - PFC Portion PFC ISENSE PFC_OUT PFC VSENSE VCC VINS PFC VCOMP PFC ICOMP GND R S 400ns R S disch_ramp C2 OP1 1.43x C1 OTA2 disch_ramp protect UVLO PWM Comparator Ramp Generator Sychronized Oscillator fpfc:fpwm =1:2 Toff min Over-current Comparator PWM Logic Gate Driver open-loop detect M2 M1 Current Sense Opamp Current Loop Compensation Brown-Out Detection Vin M Nonlinear TF Protection Block BUF1 36k 7k Peak Current Limit Current Loop Nonlinear Gain C3 +/- 50uA 1.0mS OSC CLK 7.5% D PFC brownout with softstart PFC brownout ICE1CS02 - PWM Portion PWM_OUT PWM FB Internal Bias Voltage Reference Oscillator Duty Cycle max x3.2 Soft-Start Comparator Current Limiting PWM OP Power Management PWM Comparator Gate Driver 47% or 60% Clock 10k Ω D1 C10 R S Q & G9 1 G8 C7 C8 PWM Section FF1 Leading Edge Blanking 220ns 25k Ω 2pF 1pF 1V PWM CS Vref 5V 1 G1 1 G2 1 G3 1 G4 PWM brownout with softstart C11 C12 Q 50us Blanking time C4 PFC OVP 1.0V 2.6V 4V Voltage Loop OTA1 3V +/-30uA, 42uS 2.85V 3.15V 0 -ve Window Detect +ve Fault 0.6V PWM SYNC / Duty Cycle Undervoltage Lockout 12V 11V R S C6 1.0V Internal preshort function R S Q & G5 UVLO PWM brownout Soft-start 12ms PWM Pre- short 30uA C5 1.25V 2.85V VINS HYS 1.95V reset & G6 & G7 & G10 R S Q 30k Ω leb 30us C9 3.80V ±100uA 30us Iramp Iramp_max = 150µA Vsync 47% = OFF 60% = ON C13 0.4V 0.9V BUF 400 30us VREF 15.4k VREF 10k 0.6V 0.4V C14 3.15V C15 3.0V R S |
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