TPS40425 Driverless Controllers

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            TPS40425 Driverless Controllers
                    TI's dual output, 2-phase, stackable PMBus synchronous buck controller with Adaptive Voltage Scaling (AVS) bus
    

Image of Texas Instruments' TPS40425 Driverless Controllers Texas Instruments' TPS40425 is a PMBus, synchronous buck, driverless controller. It 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 four phases to support load current as high as 120 A. 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 V and 12 V 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.

Features
Non-smart-power mode in factory default Pin-for-pin equivalent to TPS40428 – smart-power mode in factory default Single supply operation: 4.5 V to 20 V VOUT from 0.6 V Dual or multi-phase synchronous buck controller	Individual high-speed AVS interface (0.5 to 1.5 V range) Fast transient response Stackable up to four phases 2-, 3-, or 4-phase interleaved phase shifts Accurate current sharing