Allegro MicroSystems Announces New Off-Line Switching Regulators
Allegro MicroSystems, Inc. announced a new family of off-line switching regulators targeted at the consumer and industrial markets. The STR-W6250D series is composed of current-mode PWM ICs that incorporate both controller chips made by a high-voltage proprietary BCD process and avalanche-guaranteed MOSFETs. These elements are said to allow power supply system designs that are highly reliable and simple, with fewer peripheral components. These ICs also provide auto-burst mode operation, lowering input power requirements at light loads, and improving efficiency over the entire load range and universal input range.
The STR-W6250D series is a higher-output version of our STR-A6200D series, including more functional integrations, such as: frequency jittering for EMI noise reduction, bias-assist, externally activated shutdown protection, slope compensation for continuous mode operation, and ac input-independent OCP to minimize the deliverable output power dependency on the ac input. These features are said to reduce the external component count and save space, cost, and design time while improving system-level reliability.
Allegro’s new series of off-line switching regulators are priced as follows: STR-W6251D – $1.56; STR-W6252D – $1.65; – STR-W6253D $1.83; STR-W6253MD – $1.83. All devices are priced in quantities of 1,000 and have a 10-12 week typical lead-time to market.
