LT3752EFE-1#PBF

LT3752-1 is a current mode PWM controller optimized for an active clamp forward converter topology. A DC/DC housekeeping controller is included for improved efficiency and performance. This is optimized for applications with input voltages greater than 100V. A programmable volt-second clamp allows primary switch duty cycles above 50% for high switch, transformer and rectifier utilization. Active clamp control reduces switch voltage stress and increases efficiency. A synchronous output is available for controlling secondary side synchronous rectification. Typical applications are offline and HV car battery isolated power supplies, 48V telecommunication isolated power supplies, industrial, military systems.

• Internal housekeeping DC/DC controller, programmable volt-second clamp
• High efficiency control: active clamp, synchronous rectification, programmable delays
• Short-circuit (hiccup mode) overcurrent protection, programmable soft-start/stop
• Programmable OVLO and UVLO with hysteresis
• Synchronizable to an external clock
• Operational input voltage range from 10.5 to 16V (TA=25°C. VIN=12V, UVLO-VSEC=2.5V)
• VIN shutdown current (micropower) is 40µA max (UVLO-VSEC=0.2V)
• Unity-gain bandwidth is 2.5MHz typ, open-loop voltage gain is 85dB typ
• 38-lead plastic TSSOP package
• Temperature rating range from -40°C to 125°C

Бележки

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party