This document describes a solution for off-line switch mode power supply (SMPS) using VIPer100-E. The VIPer100-E is a current mode PWM with a 620V / 2.5Ω power switch, capable of withstanding avalanche current during normal operation. This solution is suitable for many applications such as VCRs, TV sets, satellite receivers or decoders, providing customers with a simpler design phase and reduced component count.
The document presents a prototype evaluation board for an off-line single-switch Flyback power supply based on the VIPer100-E current mode PWM controller. The design operates at 100 kHz with a maximum output power of 50 W and supports input voltages from 90 V to 265 V AC.
| Maximum output power | 50 W |
|---|---|
| Operating frequency | 100 kHz |
| AC input voltage range | 90 ~ 265 V |
| DC output voltage / load | +12 V, 4A |
| Switching frequency limit | up to 200 kHz |
The standard configuration provides a 50 W capability for a single input voltage range.
Yes, by clamping the COMP pin voltage at about 3 V using a zener or Vbe multiplier, up to 130 W can be delivered in continuous running.
The device includes overcurrent, overtemperature, and overvoltage protection, as well as undervoltage lock-out with hysteresis.