Introduction

The new regulation on the power supply standby consumption for the battery charger is more and more stringent. Thanks to the VIPerx2A family low power consumption, a battery charger can be built in standby mode with no-load of 100 mW. This charger solution with the VIPer12A-E is presented in Table 1.

Some general features:

• Ultra low standby power dissipation

• Burst mode operation in standby

• 72 typical efficiency

• Current mode controller

• Output short-circuit protection

• Thermal shutdown protection

Description

The VIPer12A-E is a high voltage integrated circuit intended to be used as a primary side switch on the offline power supply, in a monolithic structure housed in DIP8 or SO- 8 package. It includes a PWM driver, a power MOSFET with 730 V breakdown voltage, a start-up circuit and several protection circuits. It minimizes the count of external parts, reduces the product size and power consumption. This application note describes the results obtained when the VIPer12A-E is used in mobile charger applications.