The ZL8800 is a dual output or dual phase digital DC/DC controller. Each output can operate independently or be used together in a dual phase configuration for high current applications. The ZL8800 supports a wide range of output voltages (0. 54V to 5. 5V) operating from input voltages as low as 4. 5V up to 14V. With the fully digital ChargeMode™ control, the ZL8800 will respond to a transient load step within a single switching cycle. This unique compensation-free modulation technique allows designs to meet transient specifications with minimum output capacitance, thus saving cost and board space. The proprietary single wire Digital-DC™ (DDC) serial bus enables the ZL8800 to communicate between other Intersil ICs. By using the DDC, the ZL8800 achieves complex functions such as inter-IC phase current balancing, sequencing, and fault spreading, eliminating complicated power supply managers with numerous external discrete components. The ZL8800 features cycle-by-cycle output overcurrent protection. The input voltage, output voltages, and DrMOS/MOSFET driver supply voltages are overvoltage and undervoltage protected. One internal temperature sensor and two external temperature sensors are available for temperature monitoring, one of which is used for under-temperature and over-temperature protection. A snapshot parametric capture feature allows users to take a snapshot of operating and fault data during normal or fault conditions. Integrated Low Dropout (LDO) regulators allow the ZL8800 to be operated from a single input supply, eliminating the need for additional linear regulators. The LDO output can be used to power external drivers or DrMOS devices. With full PMBus™ compliance, the ZL8800 is capable of measuring and reporting input voltage, input current, output voltage, and output current as well as the device's internal temperature, two external temperatures, and an auxiliary voltage input.


  • Unique compensation-free design, which is always stable
  • Output voltage range: 0.54V to 5.5V
  • Input voltage range: 4.5V to 5.5V or 6.5V to 14V
  • 1% output voltage accuracy over line, load, and temperature
  • ChargeMode control achieves fast transient response and reduced output capacitance and provides output stability without compensation
  • Switching frequency range 200kHz to 1.33MHz
  • Proprietary single wire DDC serial bus enables voltage sequencing and fault spreading with other Intersil ICs
  • External power supply tracking
  • Cycle-by-cycle inductor peak current protection
  • Digital fault protection for output voltage UV/OV, input voltage UV/OV, temperature, and MOSFET driver voltage
  • 10-bit average output current measurement with adjustable gain settings for sensing with high current, low DCR inductors
  • 10-bit monitor ADC measures input voltage, input current, output voltage, internal and external temperature, and driver voltage
  • Configurable to use standalone MOSFET drivers or integrated Driver-MOSFET (DrMOS) devices
  • Nonvolatile memory for storing operating parameters and fault events
  • PMBus compliant


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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Reel 4000
Active QFN Reel 250
Active QFN Reel 1000
Active QFN Reel 4000
Active QFN Reel 250
Active QFN Reel 1000


Title language Type Format File Size Date
Datasheets & Errata
ZL8800 Datasheet Datasheet PDF 3.54 MB
User Guides & Manuals
ISLUSBEVAL1Z User's Manual Manual PDF 257 KB
PowerNavigator User Guide for POL Manual PDF 4.68 MB
Production Configuration Utility User Guide Manual PDF 714 KB
PMBus Interface Install Guide - Win7 x86 and x64 Manual PDF 693 KB
ZL8800-2CH-DEMO1Z User Guide Manual PDF 1.22 MB
ZL8800-2PH-DEMO1Z User Guide Manual PDF 1.45 MB
ZLUSBEVAL3Z User Guide Manual PDF 393 KB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Achieving a Stable Power Supply with Fast Transient Response through Digital Control White Paper PDF 240 KB
Simplifying Advanced Power Systems Design 简体中文 White Paper PDF 258 KB
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
PCN16089A - Alternate assembly facility of the listed Intersil DFN / QFN packaged products Product Change Notice PDF 124 KB
PCN14022 - Alternate Manufacturing Facilities for Assembly of the Listed Intersil QFN Packaged Products - Amkor (ATP), Muntinlupa City, Philippines Product Change Notice PDF 136 KB
PMBus Conversion Software Tool Library ZIP 54.93 MB
ZLHLD Software v2.9 Library ZIP 119.19 MB
CompZL Software v1.5.1 Library ZIP 59.25 MB
PowerPilot Software GUI Library ZIP 435 KB
USB Drivers for the ZLUSBEVAL1Z (Windows 7) Library ZIP 1.75 MB
USB Drivers for the ZLUSBEVAL1Z (Windows XP/Vista) Library ZIP 166 KB
Digital-DC Frequently Asked Questions (FAQ) Other PDF 194 KB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
PA15041 - Firmware Update for the Intersil ZL8800ALAF* Products Product Advisory PDF 245 KB


Title language Type Format File Size Date
PowerNavigator™ Software v5.4.139 Software ZIP 96.49 MB
Production Configuration Utility v5.4.139 Software ZIP 120.25 MB
ZLUSBEVAL3Z Design Files Design File ZIP 963 KB
ZL8800-2CH-DEMO1Z Design Files Design File ZIP 2.23 MB
ZL8800-2PH-DEMO1Z Design Files Design File ZIP 1.65 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

Boards & Kits

Part Number Title Type Company
ISLUSBEVAL1Z USB to PMBus Adapter and Cable Evaluation Renesas
ZL8800-2CH-DEMO1Z Dual Channel DC/DC Digital Controller Demonstration Board Demonstration Renesas
ZL8800-2PH-DEMO1Z Dual Phase DC/DC Digital Controller Demonstration Board Demonstration Renesas