Features

The ICC80QSG flyback controller is tailored for battery charger application to meet the required performance.

Features

• Secondary side regulation (SSR), for battery charging current control

• High efficiency and low electromagnetic interference (EMI) with quasi-resonant valley switching

• Quasi-resonant mode (QRM) operation with continuous conduction mode (CCM)-prevention and valley

switching discontinuous conduction mode (DCM) in mid to light load

• Burst mode for very light loads and low system standby power consumption

• Reduced gate driver output voltage during burst mode for lower standby power

• Adjustable on-time mapping at valley changing position, for the desired maximum operating switching

frequency

• Adjustable maximum on-time – limits input power and current allowing safe-operation under low line

condition

• Comprehensive set of protections:

- internal overtemperature protection (OTP)

- flyback output overvoltage protection (OVP)

- primary side over-current protection (OCP)

- brownin protection

- brownout protection

- VCC overvoltage protection

- open loop protection

- input overvoltage protection

• Externally configurable hysteresis of brownin and brownout

• Adaptive brownout level triggering based on bus voltage ripple - protect primary components from

overheating and saturation with higher brownout level at higher input/output power

• Supports on/off control with external pull-down signal

• Soft start to reduce component stress during turn-on

• External start-up circuit control signal