DrMOS with ZL8801 and ISL99140 - Part 3

Added on September 25, 2014
How to use the ISL99140 DrMOS FET driver with the ZL8801 digital power controller.

Related Resources

ZL8801 Datasheet ZL8801 Datasheet

zl8801.pdf (1.22 MB)
Mar 2015

ISL99140 Datasheet ISL99140 Datasheet

isl99140.pdf (1000 KB)
Jul 2017

ZL8801-2PH-DEMO1Z User Guide ZL8801-2PH-DEMO1Z User Guide

zl8801-2ph-demo1z-user-guide.pdf (909 KB)
Nov 2014

ZL8801-4PH-DEMO1Z User Guide ZL8801-4PH-DEMO1Z User Guide

zl8801-4ph-demo1z-user-guide.pdf (2.63 MB)
Nov 2014

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Video Transcript

Hello, my name is Brandon Howell, and I handle technical marketing with Intersil's Digital Power Group. Today, we're gonna be talking about the benefits of using ISL99140 DrMOS Power Stage with ZL8801 Digital Power Controller.

You noticed that the ZL8801 controller has PWM outputs for driving an external power stage. In this case, we're driving the ISL99140 DrMOS Power Stage. DrMOS means the power stage has both the driver and MOSFETs integrated in one package.

There are some benefits to doing it this way. By having a driver in the same package as the MOSFETs, you reduce the overall parasitics. This allows for higher efficiency and lower noise coming from the power stage. It also simplifies your layout. Because we only provide PWM signal to the driver, we have no high current path from the controller to a DrMOS power stage. This really simplifies the layout and allows extra flexibility in placing the power stage.