MAX17793

推荐新设计使用

3V to 80V, 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter

数据手册 (Rev. 2) 产品选型表
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

  • Reduces solution size and Cost
    • No Schottky–Synchronous Operation
    • Internal Compensation Components
    • All-Ceramic Capacitors, Compact Layout
    • Adjustable Output Range from 0.6V to 90% of VIN
    • 300kHz to 1.5MHz Adjustable Frequency with External Clock Synchronization
    • EMI with symmetrical IN pins
    • 4mm × 4mm 18L-FC2QFN
  • Reduces Power Dissipation
    • Peak Efficiency of 91% (VIN = 48V and VOUT = 5V)
    • Enhanced Light-load Efficiency with Switching Frequency Modulation (SFM) Mode
    • External Bias Input for Improved Efficiency
  • Die Temperature Monitoring
  • Operates Reliably in Adverse Industrial Environments
    • Built-in Hiccup-Mode Overload Protection
    • Programmable Soft-Start
    • Built-in Output-Voltage Monitoring with RESET/TJ pin
    • Programmable EN/UVLO Threshold
    • Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions
    • High Industrial −40°C to +125°C Ambient Operating Temperature Range/−40°C to +150°C Junction Temperature range
MAX17793
3V to 80V, 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter
MAX17793 Simplified Application Diagram and Efficiency MAX17793 Pin Configuration MAX17793 Typical Application Circuit
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参考资料

数据手册 1

用户手册 1

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工具及仿真模型

EE-Sim Power®工具 1

EE-Sim DC-DC转换器工具可根据您的要求快速创建完整的电源设计，包括原理图、BOM（采用市售部件）、时域和频域仿真。您可以下载自定义原理图，在独立EE-Sim OASIS仿真器中进一步分析，其中采用SIMPLIS和SIMetrix SPICE引擎。

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评估套件

eval board
schematic 1
schematic 2
schematic 3
MAX17793EVKITA

Evaluates: MAX17793 in 5V Output-Voltage Application

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特性和优点

  • Operates from a 6.5V to 80V Input Supply
  • Up to 3A Load Current
  • 5V Output Voltage
  • 400kHz Switching Frequency
  • High 91% Efficiency (VIN = 48V, IOUT = 3A)
  • Selectable PWM and SFM Modes of Operation
  • Die Temperature Monitor
  • Enable/UVLO Input, Resistor-Programmable Input Undervoltage Lockout (UVLO) Threshold
  • Adjustable Soft-Start Time
  • Open-Drain RESET Output
  • External Frequency Synchronization
  • Overcurrent and Overtemperature Protection
  • Proven Printed Circuit Board (PCB) Layout
  • Fully Assembled and Tested
  • Complies with CISPR 32 (EN55032) Class B Conducted and Radiated Emissions

产品详情

The MAX17793 5V output evaluation board provides a proven design to evaluate the MAX17793 high voltage, high-efficiency, synchronous step-down DC-DC converters. The application circuit is configured to demonstrate optimum performance and component sizes in the evaluation board. The evaluation board also provides a good layout example, optimized for conducted, radiated Electromagnetic interference (EMI), and thermal performance.

The evaluation board is configured to operate at 400kHz switching frequency over a 6.5V to 80V input voltage range and deliver up to 3A load current.

The evaluation board features an adjustable input undervoltage-lockout, adjustable soft-start, open-drain RESET/TJ, die temperature monitor, external clock synchronization, thermal shutdown, and selectable mode of operation [pulse-width modulation (PWM) or switching frequency modulation (SFM)].

The MAX17793 converter data sheet provides a complete description of the part that should be read in conjunction with this user guide before operating the evaluation board.
MAX17793EVKITA
Evaluates: MAX17793 in 5V Output-Voltage Application
MAX17793EVKITA Board Photo Angle Web MAX17793EVKITA Board Photo Top View MAX17793EVKITA Board Photo Bottom View

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