LM5045MH/NOPB

TEXAS INSTRUMENTS  LM5045MH/NOPB  控制器, 全桥, 100V-14V电源, 2 MHz, TSSOP-28

The is a Pulse Width Modulated PWM Controller contains all of the features necessary to implement full-bridge topology power converters using either current-mode or voltage mode control. This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100V. This highly integrated controller-driver provides dual 2A high-side and low-side gate drivers for the four external bridge MOSFETs plus control signals for the secondary-side synchronous rectifier MOSFETs. External resistors program the leading and trailing edge dead-time between the main and synchronous rectifier control signals. Intelligent start-up of the synchronous rectifiers allows monotonic turn-on of the power converter even with pre-bias load conditions. Additional features include cycle-by-cycle current limiting, hiccup mode restart, programmable soft-start, synchronous rectifier soft-start and a 2MHz capable oscillator.

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Highest integration controller for small form

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Factor, high-density power converters

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High-voltage start-up regulator

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Intelligent sync rectifier start-up allows linear

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Turn-on into pre-biased loads

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Synchronous rectifiers disabled in UVLO mode and hiccup mode

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Two independent, programmable synchronous rectifiers

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Dead-time adjustments

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Four high-current 2A Bridge gate drivers

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Wide-bandwidth optocoupler interface

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Dual-mode overcurrent protection

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Programmable line UVLO and OVP

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Green product and no Sb/Br

Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.