3

EVBD4400

ASSEMBLY:

Figure 3 is a complete schematic diagram of the board.

This schematic indicates an application using MOSFET's.

When IGBT are used, freewheeling diodes (D4&D5) are

typically added.

To assemble the kit, simply solder the MOSFET power

devices included or install devices specific to your appli-

cation. Note gate, drain, source orientation of power

devices when installing on the PC board.

NOTES:

a) The ICs and Power devices are static sensitive and

require special handling.

b) Use any power device that is suitable for your applica-

tion. The PCB was designed to accept devices with TO-

247 packages. Two IXYS power devices are included in

the kit with their data sheet. D4 and D5 are required only

if Q1 and Q2 are IGBTs, and thus are not included in your

kit. (A recommendation for D4 & D5 is in the Bill of

Materials). D6, D7 footprints provide a smaller package or

footprint option.

g) Dead time is provided by timing components R17, C22

and is fixed at roughly 2.5

µ. See IXDP630 data sheet for

calculation and modification of the dead time value.

c) Use any convenient method of interconnection at GND,

Q1-D, Q2-S,DC-BUS. The hole spacing is a standard

5.08mm and will fit common terminal blocks. (A recom-

mendation for a connector 'P2' that the PCB will accept is

in the Bill of Materials and is available from Digi-Key among

others).

d) For fault detection, R2 is pulled up to the supply voltage

of the front end logic. If the FLT (fault) signal is to be sensed

by TTL logic, remove R2 and connect FLT externally from

P1-5 to +5V through a pull up resistor.

e) For half bridge applications, insert a jumper between

Q1-D and Q2-S.

DATA SHEETS:

The following list provides direct web links for the IXYS

devices included with this kit. Please visit the IXYS web

site at www.ixys.com for a complete overview of the entire

IXYS product line.

IXTH 6N90 Power MOSFETS:

http://www.ixys.com/91543.pdf

IXDB4410/11 Half Bridge Driver Chip Set:

http://www.ixys.com/96528.pdf

IXDP630 Digital Dead Time Generator

http://www.ixys.com/98568.pdf

TX02-4400 Interface Transformer

http://www.ixys.com/99016.pdf

It is also possible to construct your own pulse transformers

from scratch using the guidelines presented in the discus-

sion located at http://www.ixys.com/t092702.pdf.

f) The gate resistors, R6 and R11, will depend on the power

device size that is used. Twenty two ohm resistors are

installed and should work for most applications.