amplifier (transconductance amplifier), the IC reduces feedback current flow, resulting in better load regulation and reduced electromagnetic interference (EMI). Typical Block Diagram & Schematic Layout
| Output Rail | Rectifier | Filter Cap | Load Resistor | |-------------|-----------|------------|----------------| | +5V (10A) | STPS30L45CT (dual Schottky) | 3300µF/10V | 100Ω | | +12V (5A) | MBR20100CT | 2200µF/25V | 470Ω | | -12V (1A) | 1N5822 | 470µF/25V | 1kΩ |
In a standard power supply schematic featuring the A20112, you will find the following stages:
Since the original schematic is proprietary, the following is a from physical board examination.
