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SC3022D

High Frequency Quasi-Resonant Flyback Controller

SC3022DSC3022D

SC3022D

High Frequency Quasi-Resonant Flyback Controller

SC3022 is a high frequency, quasi-resonant fly-back PWM controller (QR/DCM). The controller with x-cap discharge function integrated high-voltage current source to provide the current during start-up and then turns off during normal operation. The extra low standby power consumption can be obtained. SC3022 provides an adaptive switching frequency fold_x002_back to achieve higher efficiency in the whole loading range. It operates QR and DCM with valley switching for high efficiency. And at no load, the IC will operate in Burst mode to reduce power consumption. SC3022 provides functions of low start-up current, fast start-up, low standby power consumption. The burst mode with extremely low operation current and significantly reduces standby power consumption to meet the efficiency regulations. The controller integrates a segmented power supply control circuit, which is especially suitable for applications with a wide output voltage range, reducing power consumption and greatly reducing peripheral devices. SC3022 integrated the adaptive over current protection (AOCP), which allows controlling the maximum output current from primary-side. The AOCP is specially designed for USB-PD solutions, together with PD controller, such as SC21xx serials. The AOCP can reduce the current stress of secondary synchronous rectification. The SC3023 offers comprehensive protection to prevent the circuit from damage under abnormal conditions. Furthermore, the features of frequency jittering and smart driving function can minimize the noise and improve EMI performance.
SC3022D
SC3022 is a high frequency, quasi-resonant fly-back PWM controller (QR/DCM). The controller with x-cap discharge function integrated high-voltage current source to provide the current during start-up and then turns off during normal operation. The extra low standby power consumption can be obtained. SC3022 provides an adaptive switching frequency fold_x002_back to achieve higher efficiency in the whole loading range. It operates QR and DCM with valley switching for high efficiency. And at no load, the IC will operate in Burst mode to reduce power consumption. SC3022 provides functions of low start-up current, fast start-up, low standby power consumption. The burst mode with extremely low operation current and significantly reduces standby power consumption to meet the efficiency regulations. The controller integrates a segmented power supply control circuit, which is especially suitable for applications with a wide output voltage range, reducing power consumption and greatly reducing peripheral devices. SC3022 integrated the adaptive over current protection (AOCP), which allows controlling the maximum output current from primary-side. The AOCP is specially designed for USB-PD solutions, together with PD controller, such as SC21xx serials. The AOCP can reduce the current stress of secondary synchronous rectification. The SC3023 offers comprehensive protection to prevent the circuit from damage under abnormal conditions. Furthermore, the features of frequency jittering and smart driving function can minimize the noise and improve EMI performance.
Product Details
Design / Development
Technical Documentation
Applications

Product Details

Technical Documentation

Parameter NameParameter Value
Fsw_Max170kHz
Control ModeQR/DCM
HV_Pin Bin/Bout105/90
X-Cap Dis-charge/
Ext-OTPA
ZCD Pin4.45
Parameter NameParameter Value
FB OLPA
Peak Load/
Adaptive/
VDD OVP40
DRVMOS
PackageSSOP10
Parameter NameParameter Value
Fsw_Max170kHz
Control ModeQR/DCM
HV_Pin Bin/Bout105/90
X-Cap Dis-charge/
Ext-OTPA
ZCD Pin4.45
FB OLPA
Peak Load/
Adaptive/
VDD OVP40
DRVMOS
PackageSSOP10