Datasheet > MDCD270P150M500A40

MDCD270P150M500A40

更新时间： 2024-01-30 04:34:25

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EVAL BRD FOR MDCM270P150M500A40

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USER GUIDE | UG:017

Analog Control 3623 and 4623 ChiP DCMs

Evaluation Board

Arthur Russell

VI Chip^®Applications Engineering

October 2014

Contents

Page

Introduction

The Analog Control 3623 and 4623 ChiP DCM evaluation boards described in this document are

designed to be used with the DCM family of isolated, DC-DC converters. The 3623 DCM board is used

for the analog control, low input voltage 3623 ChiP products, while the 4623 DCM board is used for

the analog control, high input voltage (ofﬂine) 4623 ChiP products.

Contents

Features

Board Description

General Components

Test Points Description

The DCM evaluation board can be conﬁgured for various enabling and fault monitoring schemes,

as well as to exercise various modes of trimming, depending on the application requirements. The

evaluation board can be used to evaluate DCMs in either a stand-alone conﬁguration, or as an

array of modules.

Schematic, Assembly Drawing

and Bill of Materials

Enable options:

Recommended Test

1. On-board mechanical switch (default)

Equipment

Basic Connections

Board Operation Details

Trim Control

2. External control

Trim options:

1. Fixed trim operation (default): the TR pin is permitted to ﬂoat at initial startup.

Fault Monitoring

Chassis Ground

Paralleling

The DCM disables output trimming and the output trim is programmed to the nominal rated V_OUT

2. Variable trim operation, on-board variable resistor: The trim pin voltage is ratiometric,

with a rheostat working against a pull-up resistor inside the DCM to VCC.

3. Variable trim operation, off-board control: The trim pin voltage is controlled via external

programming control, which is referenced to the –IN of each speciﬁc DCM in the system.

Fault monitor options:

1. On-board LED: the FT pin drives a visible LED for visual feedback on fault status.

2. On-board optocoupler: the FT pin drives an on-board optocoupler to bring

fault status across the primary-secondary isolation boundary.

UG:017

vicorpower.com

Applications Engineering: 800 927.9474

Page 1

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