ON Semiconductor NCP81278T Quick Start User Manual

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This document will provide very condensed instructions on powering up and configuring the onsemi NCP81278T Evaluation Board.

Description: The NCP81278T Evaluation Board (EVB) is a test vehicle for the family of Open Voltage Regulator (Open VReg)-

compatible devices. This family includes the NCP81272, NCP81278, NCP81272T, NCP81278D and NCP81278T. The devices feature

a PWM VID design and up to two phases in forced Constant Current Mode (FCCM) configuration, 1 phase in FCCM, 2 phases in Auto

discontinuous mode (Auto DCM) and one phase in Auto DCM, depending on the device part number.

Photo of EVB:

VIN+

VIN-

NCP81278T Evaluation Board Quick Start User Guide

Mode Jumpers

Vout+

Vout-

GND

+5V

Enable

Switch

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Page 1 This document will provide very condensed instructions on powering up and configuring the onsemi NCP81278T Evaluation Board. Description: The NCP81278T Evaluation Board (EVB) is a test vehicle for the family of Open Voltage Regulator (Open VReg)- compatible devices. This family includes the NCP81272, NCP81278, NCP81272T, NCP81278D and NCP81278T. The devices feature a PWM VID design and up to two phases in forced Constant Current Mode (FCCM) configuration, 1 phase in FCCM, 2 phases in Auto discontinuous mode (Auto DCM) and one phase in Auto DCM, depending on the device part number.
Page 2 NCP81278T Evaluation Board Quick Start User Guide Power-up instructions: 1. Apply input voltage (~6 V – 20 V) to J74 (+) and J71 (-). 2. Apply +5 V to J73. Turn on +5 V first, then VIN. 4. Throw the switch to the left or to the inside of the EVB. The green LED should illuminate, and the output voltage should be ~0.8 V.