LM5026MTX

• Product Introduction

peculiarity

Current mode control Internal 100V start-up bias regulator 3A composite front door driver High-bandwidth optocoupler interface Programmable Line Adjustable Hysteresis Undervoltage Lockout (UVLO) Universal dual-mode overcurrent protection hiccup delay timer Programmable primary and active clamp outputs between overlaps or dead zones Programmable maximum duty cycle clamping Programmable soft start Cutting-edge erasing Oscillator with a resistance setting of 1MHz Oscillator synchronization I/O capability Precision 5V reference

illustrate

The LM5026 PWM controller includes all the necessary features to implement the power converter, utilizing active clamping/reset technology controlled by current mode. Active clamping technology, higher efficiency and greater power density, enables clamping/reset techniques compared to traditional catch-up windings or RDCs. Two control outputs are available, Main Power Switch Control (OUT_A) and Active Clamp Switch Control (OUT_B). The device can be configured to control either a P-channel or N-channel clamp switch. A composite configuration of front-door driver functionality, including two MOS bipolar devices, provides superior gate drive characteristics. The LM5026 can be configured with bias voltages over a wide input range of 8V to 100V. Other features include programmable maximum duty cycle, line undervoltage lockout, cycle-by-cycle current limiting, hiccup-mode failover operation with adjustable timeout delay, PWM slope compensation, soft start, 1MHz ability to synchronize input/output capability, precise referencing, and thermal shutdown.