STMicroelectronics Intros Switch for Power Converters

STMicroelectronics Inc. (ST, Geneva, Switzerland) introduced a primary-side switch IC for ac-dc converters, which is designed for use in DVD players, LCD monitors, set-top boxes and other adaptors. It can also be used in stand-by power supplies for servers. The VIPer53E can be used to build off-line power supplies with a secondary power capability of up to 30 W with a wide input-voltage range, or 50 W with a single European voltage range. It can sustain these ratings in a DIP-8 package without a heatsink.

The part combines an enhanced, current-mode, PWM controller with a high-voltage, MDmesh power MOSFET; a start-up, high-voltage current source; and several on-chip protection circuits. The VIPer53E is an alternative to the VIPer53 for use when a power supply design only needs secondary regulation.

The part is available in surface-mounting DIP-8 and PowerSO-10 packages. Pricing is $0.90 in quantities of 10,000 pieces.