Selecting between the ZL8800 and ZL8801

Added on September 28, 2014
Identifying the differences between the ZL8800 and ZL8801 dual phase PMBus™ ChargeMode™ control DC/DC digital controllers.

Related Resources

ZL8801 Datasheet ZL8801 Datasheet

zl8801.pdf (1.22 MB)
Mar 2015

ZL8800 Datasheet ZL8800 Datasheet

zl8800.pdf (3.76 MB)
Aug 2017

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Video Transcript

The ZL8801 is part of our fourth generation family of digital power controllers. Also in that family is the ZL8800. Selecting between the two is relatively simple, as the chart shows.

The ZL8800 and ZL8801 both offer ChargeMode control. The ZL8800, however, offers dual output or dual phase operation. The ZL8801 offers only dual phase, but it adds DDC Current Share. With DDC Current Share, you can share multiple ZL8801 controllers, for up to an eight-phase design.

The recommended current range for the ZL8800 is between 5 and 60 amps. The ZL8801 has a recommended current range of 40 amps all the way up to 300 amps plus. The actual current is dependent on the power stage you use, however, these are just recommendations.

Both parts are offered in a 7 by 7 millimeter QFN package. Both the ZL8800 and ZL8801 are compensation free, based on our ChargeMode control architecture.

Unlike an analog control loop, a fully digital control loop digitizes the feedback voltage and handles all control and compensation in a digital delay.