TPS40425RHAT

TEXAS INSTRUMENTS  TPS40425RHAT  直流/直流控制器, PM总线接口, 4.5V至20V, 2路输出, 同步降压, 1.5MHz, VQFN-40

The is a PMBus synchronous Driverless Buck Controller operates in non-smart power mode in factory default setting and it can operate in smart power mode after PMBus programming and power reboot. It can be configured as dual-output or 2-phase. It is also stackable up to 4 phases to support load current as high as 120A. Interleaved phase shift for 2-, 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance. The wide input voltage range can support 5 and 12V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs. Using the PMBus standard, the TPS40425 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay. In addition, the device implements an accurate measurement system to monitor the output voltages, currents and temperatures for individual.

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Non-smart power mode in factory default

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Dual or multi-phase synchronous buck controller

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Individual high-speed AVS interface

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Fast transient response

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Stackable up to four phases

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Accurate current sharing

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PMBus capability

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Margining up or down with 2mV step

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Programmable fault limit and response

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±0.8% VOUT

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Accuracy current monitoring

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Programmable UVLO on/off thresholds

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Programmable soft-start time, turn-on delay and turn-off delay

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On-chip non-volatile memory NVM to store custom configurations

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Inductor DCR current sensing

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Supports pre-biased output

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Differential remote sensing

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Synchronization to an external clock

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OC/OV/UV/OT Fault protection

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Support for power stage

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.