LM5025BMTC/NOPB

具有 P 或 N 沟道钳位 FET 和 75% 最大占空比的 90V 有源钳位电压模式 PWM 控制器 16-TSSOP -40 to 125

The LM5025B is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025B are as follows:

The LM5025B PWM controller contains all of the features necessary to implement power converters utilizing the Active Clamp / Reset technique. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp / reset techniques. Two control outputs are provided, the main power switch control OUT_A and the active clamp switch control OUT_B. The two internal compound gate drivers parallel both MOS and Bipolar devices, providing superior gate drive characteristics. This controller is designed for high-speed operation including an oscillator frequency range up to 1MHz and total PWM and current sense propagation delays less than 100ns.

The LM5025B includes a high-voltage start-up regulator that operates over a wide input range of 13V to 100V. Additional features include: Line Under Voltage Lockout UVLO, softstart, oscillator UP/DOWN sync capability, precision reference and thermal shutdown.