Descriptions

IRIS-G5624A is a hybrid IC consists from power MOSFET and a controller IC, designed for Indirect feed-back Quasi Resonant (including low frequency PRC) fly-back converter type SMPS (Switching Mode Power Supply) applications. This IC realizes high efficiency, low noise, downsizing and standardizing of a power supply system reducing external components count and simplifying the circuit designs.

Features

? Oscillator is provided on the monolithic control with adopting On-Chip

Trimming technology.

? Small temperature characteristics variation by adopting a comparator to

compensate for temperature on the control part.

? Low start-up circuit current (100uA max)

? Built-in Active Low-Pass Filter for stabilizing the operation in case of light

load

? Avalanche energy guaranteed MOSFET with high VDSS

? The built-in power MOSFET simplifies the surge absorption circuit

since the MOSFET guarantees the avalanche energy.

? No VDSS de-rating is required.

?Indirect feed-back by built-in error amplifier on Vin terminal

? Built-in constant voltage drive circuit

? Built-in step drive circuit

? Built-in low frequency PRC mode (≒ 20kHz)

? Various kinds of protection functions

? Pulse-by-pulse Overcurrent Protection (OCP)

? Overvoltage Protection with latch mode (OVP)

? Thermal Shutdown with latch mode (TSD)