Technical Note

26/29

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2011.01 - Rev.C

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BD6067GU, BD6069GUT, BD6071HFN, BD6072HFN

►BD6069GUT, BD6072HFN

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Recommended PCB layout

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Attention point of PCB layout

In PCB design, the wiring of power supply line should be low Impedance, and put the bypass capacitor if necessary.

Especially the wiring impedance must be lower around the DC/DC converter.

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About heat loss

In heat design, operate the DC/DC converter in the following condition.

(The following temperature is a guarantee temperature, so consider the margin.)

1. Periphery temperature Ta must be less than 85℃.

2. The loss of IC must be less than dissipation Pd.

Fig.81 BD6072HFN

Front surface (Top view)

Fig.82 BD6072HFN

Bottom surface (Top view)