Part Number: AM22A, AM-22A ( = VIPer22A )
Function: High-Performance Switching Power Supply Control Chip.
Package: DIP 8 Pin
AM22A chip is a dedicated low-power switching power supply control chip, widely used in power adapter, LED power supply, induction cooker, empty Tune, DVD and other small household electrical appliances.
Switching power supply control chip is an integrated circuit that is used to control the operation of a switching power supply. A switching power supply is a type of power supply that uses high-frequency switching to convert a DC voltage to a different DC voltage, or to convert AC voltage to DC voltage.
1. Dual-chip design, high-voltage switch tube bipolar transistor design to reduce product cost; control circuit mining With large-scale MOS digital circuit design, and E-driven drive bipolar crystal chip to improve the high-voltage switch The safe pressure value of the pipe. Built-in self-powered circuit, no external power supply to the chip, the effective reduction of external elements The number of pieces and cost.
2. Chip integrated high-voltage constant-current start circuit, without an external start resistor.
Built-in over-current protection circuit, overload protection circuit, output short-circuit protection circuit, temperature protection circuit and optical coupling failure protect the circuit. Built-in slope compensation circuit to ensure that the low-voltage and high-power output of the circuit stability.
3. Built-in PWM oscillation circuit, and has a shaking frequency function to ensure good EMC characteristics.
4. Built-in frequency conversion function, standby automatically reduce the operating frequency, to meet the European green energy standards (<0: 3W) with , Reduces the output voltage ripple.
Built-in high-voltage protection, when the input bus voltage is higher than the protection voltage, the chip will automatically shut down and restart delay.
AM22A Datasheet PDF
Other data sheets are available within the file: