ISL8011 查看數據表（PDF） - Intersil

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ISL8011

1.2A Integrated FETs, High Efficiency Synchronous Buck Regulator

Intersil 

ISL8011

Layout Recommendation

The layout is a very important converter design step to make

sure the designed converter works well. For ISL8011 buck

converter, the power loop is composed of the output inductor

L, the output capacitor COUT, Phase pin and PGND pin. It is

necessary to make the power loop as small as possible. In

order to make the output voltage regulate well and avoid the

noise coupling from the power loop, SGND pin should be

connected with PGND pin at the terminals of the load.

The heat of the IC is mainly dissipated through the thermal

pad. Maximizing the copper area connected to the thermal

pad is preferable. In addition, a solid ground plane is helpful

for EMI performance.

9

FN9254.2

August 4, 2009

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