LTM4739

推荐用于新设计

15VIN、带 PMBus 的单路 10A 降压型 μModule 稳压器

产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

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产品详情

  • 在 <1cm2(单边 PCB)或 0.5cm2 (双边 PCB)的空间内提供完整的解决方案
  • 通过 PMBus 遥测功能,监测输出电流、输出电压、输入电压和结温
  • 输入电压范围:3V 至 15V
  • 输出电压范围:0.4V 至 5.5V
  • 可调参考电压:0.4V 至 0.8V(默认 0.5V)
  • 12VIN 和 1.8VOUT 时的连续输出电流为 10A,(TA = 90°C)
  • 在 10A 时,从 12VIN 到 1VOUT 的满载效率为 90%
  • ±过热时最大直流输出误差为 1%
  • 宽频率范围:500kHz 至 2MHz
  • 内部补偿
  • 电源正常指示器
  • 恒定频率峰值电流模式控制
  • 差分远程检测
  • 单相负载点 (POL) 操作
  • 49 引脚 6.25 毫米 × 6.25 毫米 × 5.07 毫米 BGA 封装
LTM4739
15VIN、带 PMBus 的单路 10A 降压型 μModule 稳压器
LTM4739 Simplified Block Diagram LTM4739 Efficiency LTM4739 Typical Application LTM4739 Pin Configuration LTM4739 Chip Illustration
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eval board
EVAL-LTM4739-AZ

LTM4739: 15VIN, Single 10A Step-Down μModule Regulator with PMBus

特性和优点

  • Complete single-phase point-of-load (POL) solution.
  • 90% full load efficiency from 12VIN to 1VOUT at 10A.
  • PMBus telemetry of output current, reference voltage, input voltage, and junction temperature.

产品详情

The EVAL-LTM4739-AZ evaluation board features the LTM®4739: a complete, high efficiency, high power-density, single 10A DC-to-DC step-down power μModule® (micromodule) regulator with PMBus interface. The LTM4739 is available in a 49-lead 6.25mm × 6.25mm × 5.07mm Ball grid array (BGA) package. Read the LTM4739 data sheet before using or making any hardware changes to the EVAL-LTM4739-AZ evaluation board.

The EVAL-LTM4739-AZ input voltage range is 3V to 15V, and the output voltage range is 0.4V to 5.5V. The maximum load current is 10A. The output voltage is adjusted through the feedback resistor divider or the PMBus VOUT_COMMAND (the factory default output voltage is 1V). The switching frequency range is 500kHz to 2MHz (factory default frequency is 500kHz), configured through the pin-strap resistor at the PGM1 or with PMBus commands. The resistor value at the PGM1 pin is also used to adjust the control loop compensation parameters. The resistor value at the PGM0 pin is used to configure the positive overcurrent (POC) protection triggering level and the factory default PMBus address (0x39h). The factory default POC protection sets the peak inductor current limit to 15A. At a high ambient temperature, the current output may need to be derated (Refer to the LTM4739 data sheet for more details).

EVAL-LTM4739-AZ
LTM4739: 15VIN, Single 10A Step-Down μModule Regulator with PMBus
EVAL-LTM4739-AZ Board Photo Angle View EVAL-LTM4739-AZ Board Photo Top View EVAL-LTM4739-AZ Board Photo Bottom View

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