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MAX16990

MAX16990

36V、2.5MHz汽车级Boost/SEPIC控制器

2.5MHz汽车应用PWM控制器，以有限的空间提供电源预升压，支持冷/热启动

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概述

说明

MAX16990/MAX16992为高性能、电流模式PWM控制器，具有4µA (典型值)关断电流，在较宽的输入电压范围实现boost/SEPIC转换。4.5V至36V输入电压范围使得这些器件理想用于汽车电子产品，例如前端“预升压”或“SEPIC”电源、大功率LED照明的第一级升压。内部低压差稳压器(PVL调节器)输出5V，使得MAX16990/MAX16992可直接采用汽车电池作为输入。当转换器输出连接到SUP输入时，输入工作电压范围可扩展到低至2.5V。

多个器件版本，提供一种或多种下述功能：两相工作同步输出(SYNC0)、利用独立的输入引脚(OVP)实现过压保护、基准输入(REFIN)允许实时调整输出电压。

MAX16990和MAX16992采用不同的工作频率。利用FSET/SYNC输入，所有版本的器件均可同步至外部主时钟。

另外，MAX16990/MAX16992具有工厂可编程扩频选项。所有器件均采用紧凑的12引脚TQFN和10引脚µMAX®封装。

MAX16990, MAX16992: Functional Diagram MAX16990, MAX16992: Functional Diagram 放大+

关键特性

  • 工作电压低至4.5V (在自举模式下：2.5V或更低)，可承受高达42V的抛负载瞬态电压
  • 开关频率范围：100kHz至1MHz (MAX16990)以及1MHz至2.5MHz (MAX16992)
  • 反馈电压精度：±1%
  • 关断电流：4µA
  • 可调整斜率补偿
  • 内部软启动(9ms)
  • 电流模式控制
  • PGOOD输出和打嗝模式,增强系统保护
  • 过热关断
  • 工作温度范围：-40°C至+125°C
  • 紧凑的12引脚TQFN (3mm × 3mm)以及10引脚µMAX封装

应用

  • 车载音频/导航系统
  • 车载LED照明
  • 仪表盘

参数规格

Part NumberICC
(mA)		Shutdown Mode Supply Current
(µA)		Shutdown Mode Supply Current
(µA)		Package/Pins
typtypmax
MAX16990 0.7547
TQFN/12
UMAX/10
MAX16992 1.25
See Data Sheet
查看所有Step-Up Switching Regulators (100)
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。

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		VOUT1 Tolerance
(±%)		IOUT1
(A)		IOUT1
(A)		Output Adjust. MethodSwitch TypePower Good SignalDC-DC OutputsAlternate TopologyOper. Freq.
(kHz)		Design ToolsPackage/PinsOper. Temp.
(°C)		Budgetary
Price
minmaxminmaxmaxmaxSee Notes
MAX16990 2.542536166ResistorExternalYes1Step-Up
300
400
500
1000
EE-Sim
TQFN/12
UMAX/10
-40 to +125$1.65 @1k
MAX16992 -
Step-Down
Step-Up
1000
2200
2500
TQFN/12
UMAX/10
$1.64 @1k
查看所有Step-Down/Up Switching Regulators (30)

设计资源


MAX16990EVKIT: 评估MAX16990和MAX16992
MAX16992EVKIT: 评估MAX16990和MAX16992

技术资料

参考原理图 5740 How to Select the External Components for an Automotive SEPIC DC-DC Regulator
应用笔记 5587 Selecting External Components and Compensation for Automotive Step-Up DC-DC Regulator with Preboost Reference Design

质量和环境数据

申请可靠性报告: MAX16990 
无铅封装的锡（Sn）晶须报告

工具和模型

  • EE-Sim: MAX16990 设计和仿真
  • MAX16990 SIMPLIS Schematic

    •

    质量与环境

    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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    工具和模型

    技术文档

    参考设计