Information

1300 Henley Court

Pullman, WA 99163

509.334.6306

www.digilentinc.com

PmodOD1™ Reference Manual

Revised March 30, 2015

This manual applies to the PmodOD1 rev. A

DOC#: 502-125

Other product and company names mentioned may be trademarks of their respective owners.

Page 1 of 2

Overview

The Digilent PmodOD1 uses open-drain MOSFETs to drive high current applications.

1 Functional Description

The PmodOD1 utilizes two NTHD4508 dual power N-FETs. Each channel can comfortably drive 3.0 A of continuous

current at 25°C and up to 4.1 A of current for under 5 seconds, making this Pmod ideal for high current

applications that require a simple on/off switch mechanism.

2 Interfacing with the Pmod

The PmodOD1 communicates with the host board via the GPIO protocol. A logic high signal “turns on” a particular

MOSFET and a logic low signal turns off the MOSFET.

The PmodOD1.

 Two NTHD4508 dual power N-Channel

ChipFET™s

 4.1A peak output current (t < 5s)

 3.0A continuous current (at 25°C)

 20V max. output voltage

Features include:

PAGE 1
300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com PmodOD1™ Reference Manual Revised March 30, 2015 This manual applies to the PmodOD1 rev. A Overview The Digilent PmodOD1 uses open-drain MOSFETs to drive high current applications. Features include:     Two NTHD4508 dual power N-Channel ChipFET™s 1) 4.1A peak output current (t < 5s) 3.0A continuous current (at 25°C) 20V max. output voltage The PmodOD1.
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PmodOD1™ Reference Manual Pin 1 2 3 4 5 6 Signal G1 G2 G3 G4 GND VCC Description Output 1 Output 2 Output 3 Output 4 Power Supply Ground Positive Power Supply (3.3/5V) Typical Circuit (4x) G1 OD1 G2 OD2 G3 J2 G4 OD3 GND OD4 Vcc Table 1. Pinout description table. J3 GND J1 VL JP1 J4 Figure 1. PmodOD1 block diagram. Each output provides a clamp diode to prevent damage due to flyback voltages generated by inductive loads.