MAX17687

4.5V to 60V Input, Ultra-Small, High-Efficiency, Iso-Buck DC-DC Converter

Reduce External Components, Solution Size and Cost for DC-DC Isolation


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说明

The Rainier series of isolated DC-DC products enable small, efficient solutions with a lower BOM. The MAX17687 is a high-voltage, high-efficiency, iso-buck DC-DC converter designed to provide isolated power up to 10W. The device operates over a wide 4.5V to 60V input voltage range and uses primary-side feedback to regulate the output voltage. It delivers primary peak current up to 3.2A and regulates primary output voltage to within ±1.2%.

The device features peak-current-mode control with pulse-width modulation (PWM) scheme. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout.

A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the primary output voltage.

The device operates from -40°C to +125°C and is available in a compact 20-pin (4mm x 4mm) TQFN package. Simulation models are available.

MAX17687: Typical Application Circuit MAX17687: Typical Application Circuit 放大+

关键特性

  • Eliminates External Components and Reduces Total Cost
    • Synchronous Primary Operation for High Efficiency and Reduced Cost
    • All-Ceramic Capacitors, Ultra-Compact Layout
  • Supports Numerous Isolated DC-DC Applications
    • Wide 4.5V to 60V Input Voltage Range
    • Delivers up to 3.2A Peak Current
    • 100kHz to 500kHz Adjustable Frequency with External Synchronization
    • Available in a 20-Pin, 4mm x 4mm TQFN Package
  • Reduces Power Dissipation
    • Peak Efficiency > 90%
    • Shutdown Current = 2.8μA (typ)
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Current Limit, Sink Current Limit, and Auto-Retry Startup
    • Programmable EN/UVLO Threshold
    • Adjustable Soft-Start
    • -40°C to +125°C Ambient Operating Temperature Range
    • -40°C to +150°C Junction Temperature Range

应用

  • 智能电表中的通信集中器
  • 浮地电源发生器
  • 工业过程控制
  • 医疗设备隔离电源
Part NumberVIN
(V)
VIN
(V)
VOUT1 Tolerance
(±%)
Output Adjust. MethodSwitch TypeSynchronous SwitchingPower Good SignalICC
(mA)
DC-DC OutputsAlternate TopologyOper. Freq.
(kHz)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxmaxSee Notes
MAX17687 NEW!4.5601ResistorInternalYesYes1.161Step-Up500
TQFN/20
-40 to +125$2.38 @1k
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Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX17687EVKITA: Evaluation Kit for the MAX17687 for Isolated +12V Output Configuration

质量和环境数据

申请可靠性报告: MAX17687 
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CAD Symbols and Footprints

  • MAX17687ATP+
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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    MAX17687
    4.5V to 60V Input, Ultra-Small, High-Efficiency, Iso-Buck DC-DC Converter

    • Eliminates External Components and Reduces Total Cost
    • Supports Numerous Isolated DC-DC Applications
    • Reduces Power Dissipation

    MAX17686
    4.5V to 60V Input, High-Efficiency, Iso-Buck DC-DC Converter

    • Reduces External Components and Total Cost
    • Supports Numerous Isolated DC-DC Applications
    • Reduces Power Dissipation

    类型 编号 标题
    评估板10198MAX17687EVKITA Evaluation Kit for the MAX17687 for Isolated +12V Output Configuration