Customer Specific Device from ON Semiconductor SCYW99143 Universal High Voltage Control Block for SMPS Controllers with Extremely Low Stand-by Power Consumption Product Preview The SCYW99143 is an HV control circuit specifically designed for flyback and other SMPS controllers for applications with extremely low no−load consumption.
The internal startup current source supplies the SCYW99143 DIE and slaved SMPS controller during start−up.
This function greatly simplifies the design of the auxiliary supply.
The built−in Brown−out protection with X2 capacitor discharger allow for omitting inefficient resistor networks which usage would result in unacceptable standby power consumption increase...

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