Overview
Description
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.
Features
ZL8801-2PH-DEMO1Z
- 2-phase 80A synchronous buck converter with compensation-free ChargeMode control
- Designed to be easy to use and modify. Optimized for a small circuit footprint and dynamic response
- Configurable through PMBus
- VIN range of 4.5V to 14V, VOUT adjustable from 0.54V to 2.0V (device can be adjusted to 5.5V with 6.3V output capacitors)
- Enable switch and power-good indicator
ZL8801-4PH-DEMO1Z
- 160A 4-phase synchronous buck converter with ChargeMode control
- On-the-fly VOUT control
- Configurable with PMBus
- VIN range of 4.5V to 14V
- VOUT range of 0.54V to 3.6V
- I2C/SMBus interface, PMBus compatible
- Output voltage and current protection
Applications
- Servers/Storage equipment
- Telecom/Datacom equipment
- Power supplies (memory, DSP, ASIC, FPGA)
Documentation
Featured Documentation
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| Type | Title | Date |
| Manual - Development Tools | PDF 1.13 MB | |
| Guide | PDF 4.68 MB | |
| Guide | PDF 714 KB | |
| Manual - Development Tools | PDF 3.11 MB | |
| Datasheet | PDF 822 KB | |
| Datasheet | PDF 3.50 MB | |
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Design & Development
Software & Tools
Software & Tools
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Software type
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| PowerNavigator Software Renesas' PowerNavigator™ software allows simple configuration and monitoring of multiple Digital-DC devices using a PC with a USB interface.
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Monitor Debugger/RAM Monitor | Renesas |
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Processing table
ZL8801-2PH-DEMO1Z Obsolete |
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Videos & Training
Selecting between the ZL8800 and ZL8801
Identifying the differences between the ZL8800 and ZL8801 dual phase PMBus™ ChargeMode™ control dc/dc digital controllers.
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 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.
Video List
