www.irf.com

1

- 23 -

8. PCB Layout Considerations

1. The programming and timing components should be placed close to the IC with

short traces and with ground connections directly to COM-pin (Pin 6).

2. The filter and bootstrap capacitors should also be placed close to the IC with

short tracks.

3. All signal ground connections should go directly to the COM pin.

4. There is only one connection from the IC COM to the power ground.

The power ground connections should also be as short as possible and with

bigger track size.

Disclaimer

This reference design is intended for evaluation purposes only and has not been

submitted or approved by any external test house for conformance with UL or

international safety or performance standards. International Rectifier does not guarantee

that this reference design will conform to any such standards.

1. Sensitive Timing Components

(inside black box)

2. Filter and Bootstrap Capacitors

3. Signal

Ground

4. Power Ground