2-Phase PMBus™ ChargeMode™ Control DC/DC Digital Controller Demonstration Board
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...
The ZL8801 is a dual phase digital DC/DC controller. Up to four ZL8801s (8 phases) can be operated in parallel to provide additional output current. The ZL8801 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 its fully digital ChargeMode™ Control loop the ZL8801 can 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. Intersil’s proprietary single wire DDC (Digital-DC™) serial bus enables the ZL8801 to communicate between other Intersil digital power ICs. By using the DDC, the ZL8801 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 ZL8801 features cycle-by-cycle overcurrent protection and protection for overvoltage, undervoltage, over-temperature and MOSFET driver under and overvoltage protection. A snapshot parametric capture feature allows users to take a snapshot of operating and fault data during normal or fault conditions. Integrated Low Drop-Out (LDO) regulators allow the ZL8801 to be operated from a single input supply eliminating the need for additional linear regulators. A dedicated 5V VDRV LDO output can be used to power external drivers or DrMOS devices. With full PMBus™ compliance, the ZL8801 is capable of measuring and reporting input voltage, input current, output voltage, output current as well as the device's internal temperature, an external temperature and an auxiliary voltage input.
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类型 | 文档标题 | 日期 |
数据手册 | PDF 3.50 MB | |
手册 - 开发工具 | PDF 257 KB | |
指南 | PDF 4.68 MB | |
产品变更通告 | PDF 124 KB | |
指南 | PDF 714 KB | |
其他 | PDF 194 KB | |
手册 - 硬件 | PDF 693 KB | |
应用文档 | PDF 509 KB | |
应用文档 | PDF 397 KB | |
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PowerNavigator 软件 瑞萨电子的 PowerNavigator™ 软件可使用带 USB 接口的 PC 对多个数字直流器件进行简单配置和监控。
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Monitor Debugger/RAM Monitor | 瑞萨电子 |
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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...
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...
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
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.