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MAXREFDES1017: Selectable Single-Output SEPIC Converter

MAXREFDES1017

参考设计免责声明 参照  重要声明和免责声明  涵盖参考设计和其他Maxim资源

描述

The MAX16990 is a high-performance, current-mode PWM controller with 4µA (typ) shutdown current for wide input voltage range boost/SEPIC converters. The 4.5V to 36V input operating voltage range makes this device ideal in automotive applications such as for front-end “pre -boost” or “SEPIC” power supplies and for the first boost stage in high power LED lighting applications. An internal low-dropout regulator (PVL regulator) with a 5V output voltage enables the MAX16990 to operate directly from an automotive battery input. The input operating range can be extended to as low as 2.5V when the converter output is applied to the SUP input. The MAX16990 operates in different frequency ranges. It can be synchronized to an external master clock using the FSET/SYNC input. In addition, the MAX16990 has a factory-programmable spread-spectrum option. It is available in compact 12-pin TQFN and 10-pin µMAX® packages.

A single-output SEPIC converter using the MAX16990 is demonstrated for a 18V to 32V input voltage range application. The output is selectable to be equal to either +24V or +5V using configurable jumpers present on the PCB. The power supply delivers up to 0.9A max load current.

特征

  • Minimized Radio Interference with 2.5MHz Switching Frequency Above the AM Radio Band
  • Space-Efficient Solution Design with Minimized External Components
    • 100kHz to 1MHz Switching-Frequency Range
    • 12-Pin TQFN (3mm x 3mm) and 10-Pin µMAX Packages
  • Spread Spectrum Simplifies EMI Management Design
  • Flexibility with Available Configurations for Boost, SEPIC, and Multiphase Applications
    • Adjustable Slope Compensation
    • Current-Mode Control
    • Internal Soft-Start (9ms)
  • Protection Features Support Robust Automotive Applications
    • Operating Voltage Range Down to 4.5V (2.5V or Lower in Bootstrapped Mode), Immune to Load-Dump Transient Voltages Up to 42V
    • PGOOD Output and Hiccup Mode for Enhanced System Protection
    • Overtemperature Shutdown
    • -40°C to +125°C Operation

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设计, 制作, 测试

图中的电路板已经完成封装和测试。不可售。

 

示意图

PCB布局

物料清单(BOM)

试验结果

参数化

输入类型 Vin(Min) Vin(Max) Iout(Max) 单路/多路输出 Vout(V) Pout(W) 隔离/非隔离 拓扑
DC 18 32 0.9 - 5 21.6 Non-Isolated Sepic

参数化

输入类型 DC
Vin(Min) 18
Vin(Max) 32
Iout(Max) 0.9
单路/多路输出 -
Vout(V) 5
Pout(W) 21.6
隔离/非隔离 Non-Isolated
拓扑 Sepic

Maxim设备 (1)

器件号 名称 产品线 购买 设计套件和评估模块
MAX16990 36V、2.5MHz汽车级Boost/SEPIC控制器 开关稳压器 立即购买 Design Kits

Maxim设备 (1)

器件号 产品线
开关稳压器
36V、2.5MHz汽车级Boost/SEPIC控制器

设计资料 (4)

标题 类型 尺寸 日期
maxrefdes1017-pcb PDF 2MB 2019-07-09
maxrefdes1017-schematic PDF 23KB 2019-07-09
BOM_MAX16990_MAXREFDES1017 PDF 28KB 2019-07-09
maxrefdes1017-test-results PDF 553KB 2019-07-09
日期 类型
2019-07-09

maxrefdes1017-pcb

(PDF, 2MB)

2019-07-09

maxrefdes1017-schematic

(PDF, 23KB)

2019-07-09

BOM_MAX16990_MAXREFDES1017

(PDF, 28KB)

2019-07-09

maxrefdes1017-test-results

(PDF, 553KB)

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