ISL6753集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器規(guī)格書PDF中文資料

The ISL6753 is a high-performance, low-pin-count

alternative, zero-voltage switching (ZVS) full-bridge PWM

controller. Like the ISL6551, it achieves ZVS operation by

driving the upper bridge FETs at a fixed 50 duty cycle while

the lower bridge FETS are trailing-edge modulated with

adjustable resonant switching delays. Compared to the more

familiar phase-shifted control method, this algorithm offers

equivalent efficiency and improved overcurrent and lightload performance with less complexity in a lower pin count package.

This advanced BiCMOS design features low operating

current, adjustable oscillator frequency up to 2MHz,

adjustable soft-start, internal over temperature protection,

precision deadtime and resonant delay control, and short

propagation delays. Additionally, Multi-Pulse Suppression

ensures alternating output pulses at low duty cycles where

pulse skipping may occur.

Features

? Adjustable Resonant Delay for ZVS Operation

? Voltage- or Current-Mode Operation

? 3 Current Limit Threshold

? 175μA Startup Current

? Supply UVLO

? Adjustable Deadtime Control

? Adjustable Soft-Start

? Adjustable Oscillator Frequency Up to 2MHz

? Tight Tolerance Error Amplifier Reference Over Line,

Load, and Temperature

? 5MHz GBWP Error Amplifier

? Adjustable Cycle-by-Cycle Peak Current Limit

? Fast Current Sense to Output Delay

? 70ns Leading Edge Blanking

? Multi-Pulse Suppression

? Buffered Oscillator Sawtooth Output

? Internal Over Temperature Protection

? Pb-Free Plus Anneal Available and ELV, WEEE, RoHS Compliant

Applications

? ZVS Full-Bridge Converters

? Telecom and Datacom Power

? Wireless Base Station Power

? File Server Power

? Industrial Power Systems