概览

优势和特点

  • Dual 4A/Single 8A Low EMI Switch Mode Power Supply
  • EN55022 Class B Compliant
  • Two Fully Independent Channels, Each Configurable for Positive or Negative Output Voltage Polarity
  • Output Voltage Range: 0.5V ≤ |VOUTn + – VOUTn | ≤ 26.5V
  • Wide Input Voltage Range: Up to 40V
    • 3.1V or 3.6V Start-Up, Configuration-Dependent
  • ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature
  • Analog Output Current Indicator (Positive-VOUT Only)
  • LDOOUT: 5V Fixed, 25mA Capable LDO
  • Parallelable with LTM4651/LTM4653
  • Constant-Frequency Current Mode Control
  • Power Good Indicators and Programmable Soft-Start
  • Overcurrent and Overtemperature Protection
  • 16mm × 16mm × 5.01mm BGA Package

产品详情

The LTM4655 is an ultralow noise 40V, dual 4A or single 8A DC/DC μModule® regulator designed to meet the radiated emissions requirements of EN55022. Its channels are fully independent, parallelable and capable of delivering positive or negative output polarity. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controllers, power MOSFETs, inductors, filters and support components. A 5V, 25mA LDO and clock generator enable phase interleaving of the power switching stages, for improved EMC performance.

The LTM4655 can regulate positive VOUTn + voltages between 0.5V and 26.5V from a 3.1V to 40V input. The LTM4655 can regulate negative VOUTn voltages between –0.5V and –26.5V from a maximum input range of 3.6V to 40V, with the span from VINn to VOUTn not to exceed 40V. A switching frequency range of 250kHz to 3MHz is supported.

The LTM4655 is offered in a 16mm × 16mm × 5.01mm BGA package with SnPb or RoHS compliant terminal finish.

APPLICATIONS

  • Automated Test and Measurement
  • Avionics and Industrial Control Systems
  • Video, Imaging and Instrumentation

产品生命周期 icon-recommended 推荐新设计使用

本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。

工具及仿真模型

LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器,为改善模拟电路的仿真提供增强功能和模型。

LTspice

LTspice中提供以下器件型号:

LTM4655

LTpowerCAD

LTpowerCAD®是一种电源设计程序,它选择功率级元件,提供详细效率信息,显示快速环路波特图稳定性和负载瞬态分析,并可导出至LTspice进行仿真。

LTPowerCAD

LTpowerCAD中提供以下器件的设计工具:

LTM4655
LTM4655(INVERTING)
LTM4655(INVERTING)PARALLEL
LTM4655PARALLEL

设计资源

ADI始终把满足您最高可靠性水平的产品放在首要位置。我们通过在所有产品、工艺设计和制造过程中引入高质量和可靠性检查实践这一承诺。发运的产品实现“零缺陷”始终是我们的目标。

PCN-PDN信息

样片申请及购买

电脑版网站提供样片和购买功能
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