This document describes a DVD Combo power supply solution using the VIPer53 chip, suitable for devices in the 35W power range. It features high efficiency, low standby power consumption, and cost-effective solutions.
This document presents a solution for a DVD Combo power supply that includes both DVD and VCR media. The design utilizes the VIPer53 multichip device to efficiently supply logic, DC motor drive, and LCD display requirements within a 35W power range. The solution supports a wide input voltage standard from 85Vac to 265Vac.
| Output Power | 35W |
|---|---|
| Input Voltage | 85Vac to 265Vac |
| Switching Frequency | 70kHz |
| Output 1 | 3.3V 1.5A |
| Output 2 | 5V Stand-by 100mA |
| Output 3 | 5V Power 1.5A |
| Output 4 | 12V Power 1.5A |
| Output 5 | 12V Audio 200mA |
| Output 6 | -12V Power 15mA |
| Output 7 | -25V 25mA |
| Output 8 | 4.2V Display 50mA |
The power topology works at a fixed switching frequency of 70kHz.
The normal mode delivers 8 different output voltages.
The design is intended for the 35W power range.