Power Supply Circuit Diagram - 46 inch LCD TV
Up to 300 W Interleaved Frequency Clamp CrM PFC
> Better EMI and EMC
> Lower Irms for output C
> Better for SLIM design
> Standard parts (= 32”CrM)
> Better EMI and EMC
> Lower Irms for output C
> Better for SLIM design
> Standard parts (= 32”CrM)
BACK-LIGHT INVERTER (FLYBACK SECTION)
Flyback converter
> Up to 70 W max
> Up to 3 output with 4 A Max
Quasi Resonance Flyback Converter
> Reduced EMI
> Best safety behaviors
New NCP1379 controller
> Valley-lockout system
> Variable frequency mode for ultra low power mode
> Over current protection with auto recovery internal timer
> Up to 70 W max
> Up to 3 output with 4 A Max
Quasi Resonance Flyback Converter
> Reduced EMI
> Best safety behaviors
New NCP1379 controller
> Valley-lockout system
> Variable frequency mode for ultra low power mode
> Over current protection with auto recovery internal timer
PWM Fixed Frequency Flyback converter
> 50 kHz Fixed frequency
> Allow natural CCM
New NCP1252 controller
> Adjustable switching frequency with skip mode
> Adjustable soft start
> Over current protection with internal timer
QR Valley lock-out or PWM Flyback SMPS up to 70 W
> 50 kHz Fixed frequency
> Allow natural CCM
New NCP1252 controller
> Adjustable switching frequency with skip mode
> Adjustable soft start
> Over current protection with internal timer
QR Valley lock-out or PWM Flyback SMPS up to 70 W
STANDBY CIRCUIT
Dedicated 5W ECO Power Standby SMPS
> P in < 90 mW for Pout = 40 mW @ 230 Vac
> Integrated High Voltage switcher NCP1053A (400 mA / 40 kHz Max)
Hysteretic mode improves
Low frequency mode allows DCM
Limited current reduces possible noise issues.
> P in < 90 mW for Pout = 40 mW @ 230 Vac
> Integrated High Voltage switcher NCP1053A (400 mA / 40 kHz Max)
Hysteretic mode improves
Low frequency mode allows DCM
Limited current reduces possible noise issues.
Hysteretic, Low Freq & DCM for ECO
Standby SMPS
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