2 or 4 Phase PMBus™ ChargeMode™ Control DC/DC Digital Controller Demonstration Boards


The ZL8801 is a dual-phase digital DC/DC controller optimized for current sharing. As many as 4 ZL8801’s can be operated in parallel to provide even phase counts between 2 and 8 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 demonstrating 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.

Key Features


  • 2-phase 80A synchronous buck converter with compensation-free ChargeMode control
  • Designed to be easy to use and modify. Optimized for small circuit footprint and dynamic response
  • Configurable through PMBus
  • VIN range of 4.5V to 14V, Vout adjustable from 0.54 to 2.0V (Device can be adjusted to 5.5V with 6.3V output capacitors)
  • Enable switch and power-good indicator


  • 160A 4-phase synchronous buck converter with ChargeMode™ control
  • On-the-fly Vout control
  • Configurable with PMBus
  • VIN range 4.5V to 14V
  • VOUT range 0.54V to 3.6V
  • I2C/SMBus interface, PMBus compatible
  • Output voltage and current protection


  • Servers/storage equipment
  • Telecom/datacom equipment
  • Power supplies (memory, DSP, ASIC, FPGA)

ZL8800-1PH-DEMO1Z DC/DC Digital Controller Demo Board

ZL8800-1PH-DEMO1Z DC/DC Digital Controller Demo Board

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ツール発注型名 Production Status メーカー シングルツール推奨価格
説明 ディストリビュータ在庫数 ディストリビュータ お問合せ/ご購入 Buy Direct
ZL8801-4PH-DEMO1Z 量産中 Renesas $178.00 1 0 Call -
ZL8801-2PH-DEMO1Z 量産中 Renesas $119.00 1 0 Call -


Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively, “Renesas”) DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION, FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. Renesas provides evaluation platforms and design proposals to help our customers to develop products. However, factors beyond Renesas' control, including without limitation, component variations, temperature changes and PCB layout, could significantly affect the product performance. It is the user’s responsibility to verify the actual circuit performance.