Analog Devices LT7171-1 | Demoboard EVAL-LT7171-1-AZ

Description

Evaluation kit EVAL-LT7171-1-AZ has two dual-phase monolithic DC/DC synchronous step-down regulators with a 2.9V to 16V input range featuring LT®7171-1. The output can supply up to 40A continuous load current. The Silent Switcher® structure is incorporated into the LT7171-1 to minimize EMI and reduce PCB layout sensitivity. It also integrates digital power system management functionality, allowing for programmability and telemetry with a PMBus/I2C compliant serial interface. Refer to the LT7171-1 data sheet for more detailed information.The EVAL-LT7171-1-AZ evaluation board is designed for 1.0V output with a switching frequency set at 1MHz. The controlled on-time valley current-mode control with 25ns typical minimum on-time enables a high switching frequency at a low output voltage with excellent transient response in a small overall solution size. The EVAL-LT7171-1-AZ powers up to default settings and produces power based on the NVM configuration without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the power system management features of the part, download the GUI software LTpowerPlay® onto the PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly, and store the configuration in NVM, view telemetry of voltage, current, temperature, and fault status. The NVM can be programmed up to three times.The EVAL-LT7171-1-AZ reserves two locations for evaluations, up to a total of four LT7171-1 IC parallel operations. For a detailed parallel configuration, refer to the LT7171-1 data sheet.

Features

 Silent Switcher® Architecture: Enables a Compact,Efficient, Low EMI Solution PMBus/I2C Serial Interface Telemetry Read Back includes VOUT, IOUT, VIN, DieTemperature, and Faults Programmable Voltage, Current Limit,Sequencing, Soft Start and Stop, Undervoltageand Overvoltage, Phase, Frequency (up to4MHz), and Loop Compensation Integrated Three Times Programmable NVM Key Parameters Selectable by Resistor VOUT Set Point Range: 0.4V to 5.5V VOUT Accuracy: ±0.25%, 0.6V ≤ VOUT ≤ 1.375V PolyPhase Load Sharing up to Four Devices Differential Remote VOUT Sense Fast Transient Response Wide VIN Supply Range: Down to 2.9V or 1.5V withEXTVCC Programmable and Synchronizable: 400kHz to4MHz 30-lead (3.5mm × 4mm) LQFN

Typical applications

• Communications, Storage, and Industrial Systems
• Data Center and Solid-State Drives

More information

• Datasheet
• IC product information