TPS40400EVM-351

TPS40400 Voltage Mode PWM Controller 1.2VDC Output Evaluation Board

The is an evaluation module, which is fully assembled and tested circuit for evaluating the TPS40400 PMBus synchronous buck controller in a typical single output application. The evaluation module is designed to use a regulated 8Vdc to 14Vdc bus to produce a regulated output of 1.2Vdc at a maximum of 20A of load current. The evaluation module features the CSD16325Q5 and CSD16404Q5A NexFET Power FETs. If a designer wants to communicate with this evaluation module from a Windows based PC, a separate USB Interface Adapter evaluation module is required. The USB to GPIO Adapter serves as an interface adapter or a bridge between a host PC IBM compatible and one or multiple slave devices via a standard type-A to mini-B USB cable.

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Input voltage ranges from 8V to 14V

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Regulated 1.2V output, marginable and trimmable via the PMBus interface

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20A DC steady state output current

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Programmable enable function via the PMBus interface

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Programmable switching frequency is 200kHz to 2MHz

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Programmable soft start via the PMBus interface

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Programmable over current protection

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Inductor resistance or series resistance use for current sensing

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Convenient test points for probing critical waveforms

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Voltage mode feedback control with voltage feed forward