Description
Pin Symbol
Name
Function
1 FB / SD Feedback / This pin receives a feedback current IFB which is proportional to the PFC circuit output voltage.Shutdown
The current is for output regulation, output overvoltage protection (OVP), and output undervoltage
protection (UVP).When IFB goes above 107% Iref, OVP is activated and the Drive Output is disabled.When IFB goes below 8% Iref, the device enters a low
consumption shutdown mode.
Features
- The NCP1653 is a driver for robust and compact PFC stages. Features.
- IEC1000.
- 3.
- 2 Compliant.
- Continuous Conduction Mode.
- Average Current.
- Mode or Peak Current.
- Mode Operation.
- Constant Output Voltage or Follower Boost Operation.
- Very Few External Components.
- Fixed Switching Frequency: 67 kHz = NCP1653A,
Fixed Switching Frequency: 100 kHz = NCP1653.
- Soft.
- Start Capability.
- VCC Undervoltage.