The ZL8801 is a dual-phase digital DC/DC controller optimized for current sharing. As many as four ZL8801s can be operated in parallel to provide even phase counts between two and eight phases. The ZL8801 incorporates compensation-free ChargeMode™ control to achieve single-cycle transient response. ZL8801 can also be used with the ISL99140 40A DrMOS power module to simplify layout and allow for extra design flexibility.

The ZL8801-2PH-DEMO1Z demonstration board is a 6-layer board used to demonstrate a 2-phase 80A synchronous buck converter. Sequencing, margining, plus other features can be evaluated using this demonstration board.

The ZL8801-4PH-DEMO1Z demonstration board is a 6-layer board configured as a 4-phase 160A synchronous buck converter. Sequencing, margining, fault spreading, and other features can be evaluated using this board.

A USB to PMBus™ adapter module is used to connect the demonstration board to a host PC running Microsoft Windows.


<li>2-phase 80A synchronous buck converter with compensation-free ChargeMode control</li>
<li>Designed to be easy to use and modify. Optimized for a small circuit footprint and dynamic response</li>
<li>Configurable through PMBus</li>
<li>V<sub>IN</sub> range of 4.5V to 14V, V<sub>OUT</sub> adjustable from 0.54V to 2.0V (device can be adjusted to 5.5V with 6.3V output capacitors)</li>
<li>Enable switch and power-good indicator</li>
<li>160A 4-phase synchronous buck converter with ChargeMode control</li>
<li>On-the-fly V<sub>OUT</sub> control</li>
<li>Configurable with PMBus</li>
<li>V<sub>IN</sub> range of 4.5V to 14V</li>
<li>V<sub>OUT</sub> range of 0.54V to 3.6V</li>
<li>I<sup>2</sup>C/SMBus interface, PMBus compatible</li>
<li>Output voltage and current protection</li>


  • Servers/Storage equipment
  • Telecom/Datacom equipment
  • Power supplies (memory, DSP, ASIC, FPGA)

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL99140 Datasheet Datasheet PDF 822 KB
ZL8801 Datasheet Datasheet PDF 3.50 MB
User Guides & Manuals
PowerNavigator User Guide for POL Manual PDF 4.68 MB
Production Configuration Utility User Guide Manual PDF 714 KB
ZL8801-2PH-DEMO1Z User Guide Manual PDF 1.13 MB
ZL8801-4PH-DEMO1Z User Guide Manual PDF 3.11 MB
Production Configuration Utility v5.4.139 Software ZIP 120.25 MB
PowerNavigator™ Software v5.4.139 Software ZIP 96.49 MB
ZL8801-4PH-DEMO1Z Design Files Design File ZIP 1.48 MB
ZL8801-2PH-DEMO1Z Design Files Design File ZIP 1.21 MB

Software & Tool Pages

Title Type Description Company
PowerNavigator Software Software Package Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface. Renesas