FPGA boards, as well as prototype, testing, and measurement applications demand versatile and high density power solutions. The LTM4678 is a dual 25 A or single 50 A µModule regulator with digital power system management (PSM) in a small 16 mm × 16 mm footprint. It features:
The LTM4678 is a member of ADI’s power system management (PSM) µModule family, so it can be configured and monitored through a PMBus/SMBus/I2C digital interface. The PC-based LTpowerPlay® tool enables visual monitoring and control of power supply voltage, current, power use, sequencing, margining, and fault log data. The LTM4678 is the first µModule regulator with programmable loop compensation: gm and RTH, which greatly reduces design time, since dynamic performance tuning is done without the hassle of iterative PCB board builds or modifications.
A thermally enhanced component on package (CoP) BGA package enables the high power LTM4678 to fit a small 16 mm × 16 mm PCB footprint. Inductors are stacked and used as a heat sink to enable efficient cooling.
The LTM4678 uses peak current-mode control. Current is monitored and controlled cycle by cycle. This enables equal current sharing among phases.
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