Digilent VRM Bedienungsanleitung PDF herunterladen

Revision: August 17, 2010

1300 NE Henley Court, Suite 3

Pullman, WA 99163

(509) 334 6306 Voice | (509) 334 6300 Fax

Doc: 502-156 page 1 of 2

Overview

The Digilent VRM (Voltage Regulator Module)

is a battery-friendly switching voltage regulator

capable of providing up to 6A of current at 5V

or 3.3V. The input voltage can be stepped

down from sources as high as 15V. It is ideal

for use in mechatronics applications to

efficiently regulate battery voltage, or in any

application where a clean step down is

required.

Features include:

• up to 6A synchronous step down

switching regulator

• selectable 5V or 3.3V output voltage

• input voltage range of 5-15V

• 479kHz internal switching frequency

• switching synchronization to an

external clock.

Functional Description

The Digilent VRM is designed to provide

regulated 5V or 3.3V power using an external

power source such as a battery. The 6A

maximum current is ideal for application from

small control boards to large mechatronics

projects. In particular, it is useful for projects

utilizing Digilent boards requiring a 5V source,

as both the 5V external rail and the 3.3V

internal regulation can be achieved.

Note: The 6A output current rating depends on

operating temperature. It may be necessary to

provide additional heat sinking or fan cooling to

achieve the full 6A output current in some

situations.

The VRM uses a Texas Instruments

TPS54620 switching regulator. Refer to the

data sheet available from Texas Instruments

for detailed information about this regulator.

The schematic for the VRM is available on the

Digilent web site. Refer to the schematic for

detailed information about the circuitry on the

board and the input, output, and configuration

connections on the board.

Input and Output Connections

The VRM board has power inputs and outputs

in both screw terminal and two-pin header

format. Connect the external power source to

the connections labeled “GND” and “VU” on

the screw terminal connector J6, or the two-pin

header, J3, labeled “BATTERY”. Observe

proper polarity in making the connections, as

reversed polarity will damage the VRM.

Digilent has battery packs available with

connectors suitable for the two-pin header.

Note: the screw terminal connector J6 is rated

for up to 10A of current but the two pin header

J3 is only rated for 2A. Do not use the VRM in

configurations where more than 2A of input

current will pass through J3.

Board Circuit Diagram

1 2

Inhaltsverzeichnis

Seite 1 - Input and Output Connections

DDiiggiilleenntt VVRRMM RReeffeerreennccee MMaannuuaall Revision: August 17, 2010 1300 NE Henley Court, Suite 3 Pullman, WA 99163 (509) 334 6306 V

Seite 2 - Jumper Options

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Digilent VRM Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Hardware Digilent VRM herunter. Digilent VRM User Manual [en] [it] [fr] [de] Benutzerhandbuch

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