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MAXREFDES1006: High Efficiency, Current Mode, Synchronous DC-DC Converter with a 0.68V/4A Output

MAXREFDES1006

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 MAX15112 high-efficiency, current-mode step-down regulator with integrated power switches operates from 2.7V to 5.5V and delivers up to 12A of output current in a small 2mm x 3mm package. The MAX15112 offers excellent efficiency with skip mode capability at light-load conditions, yet provides unmatched efficiency under heavy load conditions. The combination of small size and high efficiency makes this device suitable for both portable and nonportable applications. 

The MAX15112 uses a current-mode control architecture with a high-gain transconductance error amplifier, which allows a simple compensation scheme and enables a cycle-by-cycle current limit with fast response to line and load transients. A factory-trimmed switching frequency of 1MHz (PWM operation) allows for a compact, all-ceramic capacitor design. 

Integrated switches with low on-resistance ensure high efficiency at heavy loads while minimizing critical inductances. 

A current-mode synchronous buck is demonstrated using the MAX15112 for a 0.68V DC output application. The power supply delivers up to 4A at 0.68V.

特征

  • ±1% Feedback Accuracy Over Load, Line, and Temperature
  • Input Undervoltage Lockout
  • Programmable Soft-Start
  • Adjustable Soft-Start
  • External Reference Input
  • Selectable Skip Mode Option for Improved Efficiency at Light Loads

Icon

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)

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 2.7 4.5 4 - 0.68 2.7 Non-Isolated Synchronous Buck

参数化

输入类型 DC
Vin(Min) 2.7
Vin(Max) 4.5
Iout(Max) 4
单路/多路输出 -
Vout(V) 0.68
Pout(W) 2.7
隔离/非隔离 Non-Isolated
拓扑 Synchronous Buck

Maxim设备 (1)

器件号 名称 产品线 购买 设计套件和评估模块
MAX15112 高效、12A、电流模式同步整流降压转换器,内置开关 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
高效、12A、电流模式同步整流降压转换器,内置开关

设计资料 (3)

标题 类型 尺寸 日期
maxrefdes1006-schematics PDF 281KB 2019-07-09
maxrefdes1006-pcb PDF 75KB 2019-07-09
MAXREFDES1006_MAX15112_BOM PDF 341KB 2019-07-09
日期 类型
2019-07-09

maxrefdes1006-schematics

(PDF, 281KB)

2019-07-09

maxrefdes1006-pcb

(PDF, 75KB)

2019-07-09

MAXREFDES1006_MAX15112_BOM

(PDF, 341KB)

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