EV-DPS-PWRBDx Power Boards

Analog Devices EV-DPS-PWRBDx Power Boards are power attachments for the LT8740 device power supply (DPS) evaluation boards. Each power board has two output voltage rails: a positive output voltage (VPOS) and a negative output voltage (VNEG), with voltage levels depending on the variant. Each rail can deliver a 20A current. These Analog Devices EV-DPS-PWRBDx power boards utilize the LTC3871 PolyPhase® Controller. Each variant uses two LTC3871 ICs, one generating VPOS and the other generating VNEG. On the EV-DPS-PWRBD1Z and EV-DPS-PWRBD4Z variants, the LTC3871, which provides VPOS, is configured as a buck. For the EV-DPS-PWRBD5Z variant, the LTC3871, which generates VPOS, is configured as a boost. The LTC3871, which provides VNEG, is configured as an inverting buck/boost for all three variants. The inverting buck/boost receives input power from the VPOS for the EV-DPS-PWRBD1Z and EV-DPS-PWRBD4Z variants and VIN for the EV-DPS-PWRBD5Z variant.

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