Part Number : AM22A, AM-22A ( = VIPer22A )
Function : High-Performance Switching Power Supply Control Chip.
Package : DIP 8 Pin
Manufacturers : Linkage
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.
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.
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