LT3752HFE#WPBF

LT3752 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 allows operation up to 100V input. 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, automotive and 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, AEC-Q100 qualified for automotive applications
• Operational input voltage range from 6.5 to 100V (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 150°C

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