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)


Type Title Date
Datasheet PDF 3.54 MB
Brochure PDF 5.51 MB 日本語
Price Increase Notice PDF 208 KB
White Paper PDF 240 KB
White Paper PDF 258 KB 简体中文
Guide PDF 4.68 MB
Product Change Notice PDF 124 KB
Guide PDF 714 KB
Product Advisory PDF 245 KB
Product Change Notice PDF 136 KB
Other PDF 194 KB
Manual - Hardware PDF 693 KB
Application Note PDF 509 KB
Application Note PDF 397 KB
14 items

Design & Development

Software & Tools

Software & Tools

Software title
Software type
PowerNavigator Software
Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface.
Monitor Debugger/RAM Monitor Renesas
1 item

Software Downloads

Type Title Date
Software & Tools - Other ZIP 120.25 MB
Software & Tools - Software ZIP 96.49 MB
Library ZIP 54.93 MB
Library ZIP 119.19 MB
Library ZIP 59.25 MB
Library ZIP 435 KB
Library ZIP 1.75 MB
Library ZIP 166 KB
8 items

Boards & Kits

Boards & Kits



Selecting between the ZL8800 and ZL8801

Identifying the differences between the ZL8800 and ZL8801 dual phase PMBus™ ChargeMode™ control dc/dc digital controllers.


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

Both parts are offered in a 7mm x 7mm 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.