First Release

Copyright © IXYS CORPORATION 2001

General Description

EVDP610

IXDP610 Digital PWM Controller IC Evaluation Board

The IXDP610 Digital Pulse Width Modulator (DPWM) is a

programmable CMOS LSI device, which accepts digital

pulse width data from a microprocessor and generates

two complementary non-overlapping pulse width modu-

lated signals for direct digital control of a switching Power

Bridge or other electronics. See the IXDP610 data sheet

for full specifications.

The EVDP610 Evaluation Board, shown in Figure 1 below,

encompasses the serial communications hardware,

microprocessor, and IXDP610 chip all onto one board that

is easily programmable from any PC. A Graphical User

Interface (GUI) designed to run on a Windows 9X, Win-

dows 2000 or Windows NT operating system is included

with the EVDP610, providing the designer with the soft-

ware and hardware tools to immediately test and evaluate

the IXDP610 IC. A functional block diagram of the

EVDP610 is shown in Figure 2.

1.0 EVDP610 QUICK-START INSTRUCTIONS

These quick-start instructions provide a step-by-step

guide to set up and begin using the EVDP610 evaluation

board and software. Please refer to the appropriate

sections of the specification for additional instructions

and guidelines.

1.1 Installing the IXDP610 Evalution Software

To install the Evaluation Software on the comuter, place

the Evaluation Software diskette into the computer's disk

drive. Run setup.exe (or double-click on the setup icon).

Follow the instructions that appear on the screen.

1.2 Powering On the IXDP610 Evaluation Board

1.

Connect +5 volts DC (+/- 5%) power to the two

screw terminals labeled TRM1 and TRM 2. TRM 1

is the power terminal and TRM 2 is the ground

terminal. When power is applied the two green

LEDs labeled D1 and D3 will turn on.

2.

By default, the evaluation board firmware loads the

pulse width registers of the IXDP610 with a 0% duty

cycle on Output1 and a 100% duty cycle on Output2

(Output1 is labeled TP1 – with a white terminal

attached and Output2 is labeled TP2 – with a black

terminal attached). The LED’s labeled D4 and D5,

corresponding to Output1 and Output2 respectively,

should glow red when the output is disabled. When

the outputs are enabled, the LEDs will glow green.

1.3 Connecting the Serial Communications

1. Connect one end of the null modem cable (provided

with the EVDP610) to the male DB9 connector on

the circuit board (labeled P1) and connect the other

end to the serial port. The pin-out of the null modem

cable is shown in the figure 3 below.

1.4 Checking Jumper Connections

1. There should be a jumper in the middle position on

JP1 (allowing the 11.059MHz clock – the same one

clocking the micro, to clock the IXDP610 chip). See

section 2.3 for more information and a detailed

drawing of the jumper positions.

2. There should be NO jumper in JP2 – installing this

jumper disables all outputs on the IXDP610 by

asserting the ODIS pin. The factory default is no

jumper in JP2.

1.5 Operating the User Interface Software

1. The IXDP610 hardware must be powered on before

running the GUI. In the GUI’s initialization sequence

the GUI will try to communicate with the EVDP610

hardware. Be aware that the GUI will reset the

EVDP610 hardware as soon as it comes up and is

Figure 2 - EVDP610 Functional Block Diagram

Figure 1 - EVDP610 Evaluation Board