MAX1992

Quick-PWM降压型控制器,带有电感饱和保护和动态输出电压

Quick-PWM降压控制器,具有电感饱和保护,可动态调节输出电压


点击查看特定型号的库存状况。

说明

MAX1992/MAX1993脉宽调制(PWM)控制器提供高效率,出色的瞬态响应和较高的直流输出精度。该器件降压高电池电压,产生笔记本电脑所需的低压CPU核电源或芯片组/RAM电源。

Maxim专有的Quick-PWM™快速响应、固定导通时间的PWM控制模式可以轻松地处理宽输入/输出电压比,并对负载瞬变提供100ns的持续导通时间,同时保持相对固定的开关频率。其具备驱动较大同步整流MOSFET的能力提高了电源转换效率。通过串接在输出上的检流电阻,提供了电流检测,以保证可靠的过载和电感饱和保护。另一种方式,控制器还可以检测只流过同步整流器上的电流,或采用无损耗电感电流检测,以达到最低的功率消耗。

一次buck转换允许MAX1992/MAX1993直接从高电池电压降压,以达到尽可能高的转换效率;另一种方式,工作于更高开关频率的两次转换(降压电源来自其它系统电源,而不是电池)允许尽可能小的物理尺寸。

MAX1992提供CPU内核、芯片组、DRAM或其他低至0.7V的电源。MAX1993提供芯片组,以及那些要求动态可调输出电压的图像处理器内核电源。MAX1993提供用于有源终端匹配总线的跟踪输入电源。MAX1992/MAX1993采用24引脚薄型QFN封装,且具有可选的过压/欠压保护。

对于要求具有电感饱和保护、外部基准输入和动态可调输出电压的双路降压PWM控制器,请参考MAX1540/MAX1541的数据资料。
MAX1992、MAX1992ETG、MAX1993:典型工作电路 MAX1992、MAX1992ETG、MAX1993:典型工作电路 放大+

关键特性

  • 电感饱和保护
  • 精确的电流限制
  • 超高效率
  • 具有100ns负载阶跃响应的Quick-PWM
  • MAX1992
    • 1.8V/2.5V固定输出,或0.7V至5.5V可调输出
  • MAX1993
    • 外部基准输入
    • 动态可调的输出电压(0.7V至5.5V)
    • 突变过程中可选的电源就绪和故障屏蔽
  • 在整个电源输入和负载范围内,达到了±1% VOUT精度
  • 2至28V电池电压输入范围(VIN)
  • 200/300/450/600kHz开关频率
  • 过压/欠压保护方式
  • 1.7ms数字软启动
  • 驱动大功率同步整流FET
  • 2V ±0.7%基准输出
  • 电源就绪区间比较器

应用

  • 1.8V与2.5V电源
  • 有源端接总线(MAX1993)
  • 核/IO电源,可低至0.7V
  • 具有动态电压核的CPU/芯片组/GPU
  • DDR存储器端接(MAX1993)
  • 笔记本电脑

请查看具体的参数规格 Step-Down Switching Regulators (409)


Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
IOUT1
(A)
(min)(max)(min)(max)
MAX1993 2280.74

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。

MAX1993EVKIT: MAX1992、MAX1993评估板
申请可靠性报告: MAX1992 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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。

质量管理体系 >
环境管理体系 >

 
Status:
Package:
Temperature:

相关资料


MAX17783C
4.5V to 60V, 2.5A, High Efficiency, Step-Down DC-DC Converter

  • Reduces External Components and Total Cost
  • Reduces Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation

MAX20028
Step-Down Controller with Dual 2.1MHz Step-Down DC-DC Converters

  • High-Efficiency Voltage DC-DC Controller Saves Power
  • Dual 2.1MHz DC-DC Converters with Integrated FETs Saves Space
  • High Accuracy to Meet ASIL Specification

MAX77533
14V Input, 1.5A High-Efficiency Buck Converter with 9μA IQ

  • 1.5A Single Channel Buck Regulator
  • 3V to 14V Input Voltage Range
  • 0.8V to 99%VSUP Output Voltage Range

MAX20766
Smart Slave IC with Integrated Current and Temperature Sensors

  • Increased Power Density with Fewer External Components
  • Accurate Real-Time Telemetry of Critical Parameters
  • Advanced Self-Protection Features for the System and IC

MAX20796
Dual-Phase Scalable Integrated Voltage Regulator with PMBus Interface

  • Peak Efficiency 92%; Full-Load Efficiency 90% at VIN = 12V, VOUT = 1V
  • Operating Input Voltage Range 4.5V to 16V
  • Output Voltage Range is 0.5V to 5.5V

MAX17227A
400mV to 5.5V Input, 2A nanoPower Boost Converter with Short-Circuit Protection and True Shutdown

  • 350nA Quiescent Supply Current from Output
  • Output Short-Circuit Protection
  • True Shutdown Mode

MAX20030
Dual Buck, Sync Boost and LDO–Complete Front-End Power Supply with 17μA IQ

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
  • Enables Crank-Ready Designs
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

MAX20031
Dual Buck, Sync Boost and LDO–Complete Front-End Power Supply with 17μA IQ

  • Meets Stringent OEM Module Power Consumption and Performance Specifications
  • Enables Crank-Ready Designs
  • EMI Reduction Features Reduce Interference with Sensitive Radio Bands without Sacrificing Wide Input Voltage Range

MAX25431
Automotive 40V, 2.2MHz, H-Bridge Buck-Boost Controller

  • Meets Stringent Automotive Quality and Reliability Requirements
  • Efficient Solution in a Small Solutions Size
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements

MAX20710
Integrated, Step-Down Switching Regulator with PMBus

  • High Power Density and Low Component Count
  • Optimized Component Performance and Efficiency with Reduced Design-In Time
  • Increased Power-Supply Reliability with System and IC Self-Protection Features

MAX17760
4.5V to 76V, 300mA, High-Efficiency, Synchronous Step-Down DC-DC Converter

  • Reduces External Components and Total Cost
  • Reduces Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation

MAX20430
Four-Output Mini PMIC for Safety Applications

  • Multiple Functions for Small Size
  • High-Precision for ASIL Applications
  • Diagnostics and Redundant Circuits

MAX18066
High-Efficiency, 4A, Step-Down DC-DC Regulator with Internal Power Switches

  • Feature Integration Shrinks Solution Size
  • High Efficiency Conserves Power
  • Safe, Reliable, Accurate Operation

MAX18166
High-Efficiency, 4A, Step-Down DC-DC Regulator with Internal Power Switches

  • Feature Integration Shrinks Solution Size
  • High Efficiency Conserves Power
  • Safe, Reliable, Accurate Operation

MAX77511
10V输入、四相位、可配置、3A/相位、高效Buck转换器

  • 3A/相配置Buck调节器
  • 2.3V至10V输入电压范围
  • 0.25V至5.2V输出电压范围

MAX77711
10V输入、四相位、可配置、3A/相位、高效Buck转换器

  • 3A/相配置Buck调节器
  • 2.3V至10V输入电压范围
  • 0.25V至5.2V输出电压范围

MAX15158, MAX15158A
High-Voltage Multiphase Boost Controller

  • Wide Operating Range
  • Integration Reduces Design Footprint
  • Robust Fault Protection Improves Quality and Reliability

MAX15158A
High-Voltage Multiphase Boost Controller

  • Wide Operating Range
  • Integration Reduces Design Footprint
  • Robust Fault Protection Improves Quality and Reliability

类型 编号 标题
评估板3779MAX1993EVKIT MAX1992、MAX1993评估板