MAX17576

4.5V to 60V, 4A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

A High-Efficiency, High-Voltage, Synchronous Step-Down DC-DC Converter with Integrated MOSFETs


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说明

The MAX17576, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over an input voltage range of 4.5V to 60V. The converter can deliver up to 4A current. Output voltage is programmable from 0.9V up to 90% of VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±0.9%. Built-in compensation across the output-voltage range eliminates the need for external compensation components.

The MAX17576 features a peak-current-mode control architecture. The device can operate either in constantfrequency based pulse-width modulation (PWM) or pulsefrequency modulation (PFM), or discontinuous-conduction mode (DCM) control schemes. 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. The MAX17576 offers a low minimum on time that allows high switching frequencies and a small solution size.

The MAX17576 is available in a 24-pin (4mm x 5mm) TQFN package. Simulation models are available.

MAX17576: Typical Application Circuit MAX17576: Typical Application Circuit 放大+

关键特性

  • Reduces External Components and Total Cost
    • No Schottky-Synchronous Operation
    • Internal Compensation for Any Output Voltage
    • All-Ceramic Capacitors, Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 60V Input
    • Adjustable Output Voltage Range from 0.9V up to 90% of VIN
    • Delivers up to 4A Current Over Temperature
    • 100kHz to 2.2MHz Adjustable Switching Frequency with External Synchronization
  • Reduces Power Dissipation
    • Peak Efficiency of 94.8%
    • PFM and DCM Modes Enable Enhanced Light-Load Efficiency
    • Auxiliary Bootstrap LDO for Improved Efficiency
    • 2.8μA Shutdown Current
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup Mode Overload Protection and Auto-Retry Startup
    • Adjustable Soft-Start and Prebiased Power-Up
    • Built-In Output-Voltage Monitoring with RESET pulled low
    • Programmable EN/UVLO Threshold
    • Monotonic Startup Into Prebiased Load
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

应用

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MAX17576EVKITB: Evaluation Kit for the MAX17576 5V Output-Voltage Application
MAX17576EVKITA: Evaluation Kit for the MAX17576 3.3V Output-Voltage Application

质量和环境数据

申请可靠性报告: MAX17576 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX17576 设计和仿真
  • 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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    类型 编号 标题
    评估板10429MAX17576EVKITA Evaluation Kit for the MAX17576 3.3V Output-Voltage Application
    评估板10401MAX17576EVKITB Evaluation Kit for the MAX17576 5V Output-Voltage Application