TPS40100

用于定序的宽输入范围同步降压控制器

The is a mid voltage, wide-input between 4.5 V and 18 V, synchronous, step-down controller. The TPS40100 offers programmable closed loop soft-start, programmable UVLO with programmable hysteresis, programmable inductor sensed current limit and can be synchronized to other timebases. The TPS40100 incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier SR MOSFET. Gate drive logic incorporates adaptive anti-cross conduction circuitry for improved efficiency, reducing both cross conduction and diode conduction in the rectifier MOSFET. The externally programmable current limit provides a hiccup overcurrent recovery characteristic.

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Operation over 4.5 V to 18 V Input Range

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Adjustable Frequency Between 100 kHz and 600 kHz Current Feedback Control

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Output Voltage Range From 0.7 V to 5.5 V

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Simultaneous, Ratiometric and Sequential Startup Sequencing

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Adaptive Gate Drive

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Remote Sensing Via Separate GND/PGND

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Internal Gate Drivers for N-channel MOSFETs

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Internal 5-V Regulator

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24-Pin QFN Package

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Thermal Shutdown

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Programmable Overcurrent Protection

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Power Good Indicator

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1%, 690-mV Reference

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Output Margining, 3% and 5%

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Programmable UVLO with Programmable Hysteresis

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Frequency Synchronization

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APPLICA ONS

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Servers

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Networking Equipment

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Cable Modems and Routers

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XDSL Modems and Routers

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Set-Top Boxes

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Telecommunications Equipment

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Power Supply Modules