Service Manual
Page 41
...VA2016w-2 DC 8 ENA I Enable input 9 VSEN I Voltage sense feedback 10 CMP_SST I Soft start and loop compensation capacitor 11 ISEN I Current sense feedback 12 V5000 O Reference voltage output 13 VIN I Supply voltage for IC 14 HSB I High side driver... in dual forward converter 2 PGND High-current power ground 3 NDRV1 O Bottom MOSFET gate drive output in dual forward converter ViewSonic Corporation 38 Confidential - IC501 (OZ9910G, CCFL Inverter controller IC) Pin Symbol 1 NDRV2 I Control command input -- 6.3 U701...18 Ground GND 19 Ground GND 20 Ground 6.4.
...VA2016w-2 DC 8 ENA I Enable input 9 VSEN I Voltage sense feedback 10 CMP_SST I Soft start and loop compensation capacitor 11 ISEN I Current sense feedback 12 V5000 O Reference voltage output 13 VIN I Supply voltage for IC 14 HSB I High side driver... in dual forward converter 2 PGND High-current power ground 3 NDRV1 O Bottom MOSFET gate drive output in dual forward converter ViewSonic Corporation 38 Confidential - IC501 (OZ9910G, CCFL Inverter controller IC) Pin Symbol 1 NDRV2 I Control command input -- 6.3 U701...18 Ground GND 19 Ground GND 20 Ground 6.4.
Service Manual
Page 42
... the internal comparator via and L.E.B. 4 Gnd The IC ground 5 Drv Driving pulses The driver's output to an external MOSFET. 6 Vcc Supplies the IC This pin is adjusted accordingly to... lossless start-up constant current into the Vcc capacitor during the sequence start-up sequence ViewSonic Corporation 39 Confidential - By connecting an optocoupler to this pin,the pead Sets the ...ground,permanently disables the skip cycle feature. 6.5 IC802 (NCP1203) Pin No. Do Not Copy VA2016w-2 Ensure a clean and Connected to the 2 FB setpoint ouput power demand.Skip cycle occurs...
... the internal comparator via and L.E.B. 4 Gnd The IC ground 5 Drv Driving pulses The driver's output to an external MOSFET. 6 Vcc Supplies the IC This pin is adjusted accordingly to... lossless start-up constant current into the Vcc capacitor during the sequence start-up sequence ViewSonic Corporation 39 Confidential - By connecting an optocoupler to this pin,the pead Sets the ...ground,permanently disables the skip cycle feature. 6.5 IC802 (NCP1203) Pin No. Do Not Copy VA2016w-2 Ensure a clean and Connected to the 2 FB setpoint ouput power demand.Skip cycle occurs...