Active PWM controller for buck and push-pull stages
The SG2525AP013TR is an active-production PWM controller from STMicroelectronics, designed for step-down (buck) and step-up/step-down (push-pull) topologies. It drives two transistor outputs with a maximum duty cycle of 49%, making it a fit for isolated and non-isolated DC-DC converters where the switching frequency can be set anywhere from 100 Hz to 400 kHz.
Supply range and control features
Operating from a Vcc supply of 8 V to 35 V, the controller includes enable and soft-start control features. The synchronous rectifier output simplifies the drive for external MOSFETs in efficiency-sensitive designs.
Temperature grade and environment
Rated for an operating temperature range of -25°C to 85°C (TA), this controller suits industrial and commercial environments where ambient temperatures stay within that band. The clock sync input allows multiple controllers to run at a common frequency, reducing beat-frequency noise in multi-phase designs.