DCD24AP480T320A50 datasheet, PDF

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DCD24AP480T320A50: DescriptionEVAL BOARD FOR DCM24AP480T320A50; CategoryDevelopment board/suite/development tools; File Size654KB，17 Pages; ManufacturerVICOR; Websitehttp://www.vicorpower.com/; Environmental Compliance

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DCD24AP480T320A50 Overview

EVAL BOARD FOR DCM24AP480T320A50

DCD24AP480T320A50 Parametric

Parameter Name	Attribute value
The main purpose	DC/DC, step down
Output and type	1. Isolation
Power - output	320W
Voltage - Output	48V
Current - Output	6.67A
Voltage - input	18 V ~ 36 V
Regulator topology	step down
Frequency - Switch	-
Board type	completely filled
What's included	plate
IC/parts used	DCM24AP480x320A50

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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

Introduction

Contents

Features

Board Description

General Components

Test Points Description

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.

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

Recommended Test

Equipment

Basic Connections

Board Operation Details

Trim Control

Fault Monitoring

Chassis Ground

Paralleling

Enable options:

On-board mechanical switch (default)

External control

Trim options:

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

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

OUT

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.

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:

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

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

Board Description

The following section provides a detailed description of the evaluation board components, test points

and sockets.

General Components

DCM (PS01)

Input lugs: Sized for #10 hardware. Use these for making connection to the input source.

This board does not contain reverse polarity protection. Check for proper polarity before

applying the power.

Input fuse (F01 & F02): Appropriately rated for the DCM model on the board.

Input filter: Ceramic input capacitors (C15-C22), filtering inductor (L01) and damping resistor

(R08) provide input filtering. Sockets (H01-H02, H03-H04) can be used for easy installation of

aluminum-electrolytic input capacitors. The 3623 board also adds H09-H10 for additional

input bypassing.

Enable / Disable switch (SW01): When actuator is in top position towards “ON” text on the board,

the ENABLE pin will be open and the DCM will be enabled. When actuator is in bottom position

towards “OFF” text on the board, the ENABLE pin will be connected to SGND and the DCM will be

disabled. When switch SW01 is ON, an external voltage source can control the ENABLE state.

Header-jumper for trim control (J09): Provides the option to enable the trim function to set the

DCM programmed trim value via either the on board trim rheostat or an external voltage source:

Using potentiometer (R26)

Using external voltage source.

Output lugs: Sized for #10 hardware. Use these lugs to connect the output directly to the load.

Output oscilloscope probe Jack (J01): Used for making accurate scope measurements of the output

voltage (e.g. ripple). The jack is directly compatible with many common passive voltage probes

models. Remove the grounding lead and insulating barrel of the probe and insert the probe tip and

barrel directly into the jack, ensuring that the probe tip seats in the center socket of the jack. To

avoid the risk of an inadvertent short circuit, do not attempt to install while power is applied.

Output filter: Output capacitor (C201), filtering inductor (L02) and damping resistors (R16-R17), and

ceramic output capacitors (C02-C05) provide output filtering. Sockets H05-H06, and H03-H04 can

be used for easy installation of aluminum-electrolytic output capacitors.

10.

High side current sense wire loops: By depopulating the associated inductor and damping resistors,

all input or output currents can be passed through a wire loop or use with an oscilloscope current

probe. The wire loop is installed at the large pair of plated through-holes near the applicable

inductor location.

11.

Dual paralleling wire-to-board connectors (J02 and J03): Used for bussing control signals and their

reference (ENABLE, SHARE, FAULT, and SGND) across board assemblies during parallel operation.

The connector style provides simple “strip and insert” use with 18 – 24 AWG solid wires. Once

inserted, a spring loaded barb retains each wire with no need for soldering. To release the wire,

insert a thin bladed tool (AVX 06-9276-7001-01-000 or similar) into the slot above each

wire entry point.

UG:017

vicorpower.com

Applications Engineering: 800 927.9474

Page 4

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