Description
1
DET This pin is connected to an auxiliary winding of the transformer via resistors of the divider for the following purposes:
Generates a ZCD signal once the secondary
side switching current falls to zero.
Produces an offset voltage to compensate the threshold voltage of the peak current limit to provide a constant
power limit.The offset is generated in accordance with the input voltage when PWM signal is enabled.
Detects the valley voltage of the s
Features
- to enhance the performance of flyback converters. FAN6300A is applied on quasiresonant flyback converters where maximum operating frequency is below 100 kHz. FAN6300H is suitable for high.
- frequency operation (up to 190 kHz). A built.
- in HV startup circuit can provide more startup current to reduce the startup time of the controller. Once the VDD voltage exceeds the turn.
- on threshold voltage, the HV startup function is disabled immediately to reduce power consumption. An in.