Intersil 公司的ZL6001是数字DC/DC电源控制器，集成了3A MOSFET驱动器，均流特性允许多个器件并联连接给负载供电，以满足更高电流的需求.输入电压3V-14V，输出电压0.54V-5.5V，输出电压精度±1%，并具有快速负载瞬态响应，集成了和PMBus兼容的I2C/SMBus接口，主要用在服务器/存储器设备，通信/数据通信设备以及电源模块.本文介绍了ZL6001主要特性，方框图， 12V输入输出1.8V/20A应用电路图，均流方框图以及ZL6100EVAL1Z评估板主要特性和指标，电路图，PCB布局图和材料清单.

The ZL6100 is a digital DC/DC controller with integrated MOSFET drivers. Current sharing allows multiple devices to be connected in parallel to source loads with very high current demands. Adaptive performance optimization algorithms improve power conversion efficiency across the entire load range. Zilker Labs Digital-DC™ technology enables a blend of power conversion performance and power management features.

The ZL6100 is designed to be a flexible building block for DC power and can be easily adapted to designs ranging from a single-phase power supply operating from a 3.3V input to a multi-phase supply operating from a 12V input. The ZL6100 eliminates the need for complicated power supply managers as well as numerous external discrete components. All operating features can be configured by simple pin-strap/resistor selection or through the SMBus™ serial interface. The ZL6100 uses the PMBus™ protocol for communication with a host controller and the Digital-DC bus for communication between other Zilker Labs devices.

ZL6001主要特性:

Power Conversion

• Efficient Synchronous Buck Controller

• Adaptive Light Load Efficiency Optimization

• 3V to 14V Input Range

• 0.54V to 5.5V Output Range (with Margin)

• ±1% Output Voltage Accuracy

• Internal 3 A MOSFET Drivers

• Fast Load Transient Response

• Current Sharing and Phase Interleaving

• Snapshot™ Parameter Capture

• 36 Ld 6mmx6mm QFN Package

• Pb-Free (RoHS Compliant)

Power Management

• Digital Soft-start/stop

• Precision Delay and Ramp-up

• Power-Good/Enable

• Voltage Tracking， Sequencing and Margining

• Voltage/Current/Temperature Monitoring

• I2C/SMBus Interface (PMBus Compatible)

• Output Voltage and Current Protection

• Internal Non-volatile Memory (NVM)

ZL6001应用:

• Servers/Storage Equipment

• Telecom/Datacom Equipment

• Power Supplies (Memory， DSP， ASIC， FPGA)

图1.ZL6001方框图

图2.ZL6001输入12V输出1.8V/20A应用电路图

图3.ZL6001均流电路图

ZL6100EVAL1Z评估板

The ZL6100 is an integrated mixed-signal power conversion and management IC that combines an efficient step-down DC/DC converter with key power and thermal management functions in a single package. The ZL6100 incorporates current sharing and adaptive efficiency-optimization algorithms to provide a flexible， efficient power IC building block.

The ZL6100EVAL1Z platform is a 4-layer board demonstrating a 15A synchronous buck converter. Sequencing， tracking， margining， plus other features can be evaluated using this board.

A USB to SMBus adapter board can be used to connect the evaluation board to a PC. The PMBus command set is accessed by using the Zilker Labs PowerNavigator™ evaluation software from a PC running Microsoft Windows.

The ZL6100EVAL1Z provides all circuitry required to demonstrate the features of the ZL6100. The ZL6100EVAL1Z has a functionally-optimized ZL6100 circuit layout that allows efficient operation up to the maximum output current. Power and load connections are provided through plug-in sockets.

A majority of the features of the ZL6100 such as soft-start delay and ramp times， supply sequencing， voltage tracking， and voltage margining are available on this evaluation board. For voltage tracking and sequencing evaluation， the board can be connected to any other Zilker Labs evaluation board that supports the Digital DC (DDC) bus.

ZL6100EVAL1Z评估板主要特性:

• 15A Synchronous Buck Converter

• Optimized for Small Circuit Footprint and Dynamic Response

• Configurable through SMBus

• Onboard Enable Switch

• Power-Good Indicator

ZL6100EVAL1Z评估板主要指标:

• VIN = 12V

• VOUT = 1.2V/15A (20A max)

• fsw = 400kHz

• Efficiency: 86% at 10A

• Output Ripple: ±1%

• Dynamic Response: ±3% (50% to 100% to 50% load step， di/dt = 2.5A/μs)

• Board Temperature: +25℃

图4.ZL6100EVAL1Z评估板方框图

图5.ZL6100EVAL1Z评估板电路图

图6.ZL6100EVAL1Z评估板接口电路图

ZL6100EVAL1Z评估板材料清单(BOM):

图7.ZL6100EVAL1Z评估板PCB布局图(顶层)