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| 型号： | MAX5051AUI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/21页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM VM 28-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 48% |
| 电源电压： | 11 V ~ 76 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 管件 |
19-2964; Rev 0; 8/03
ATION
EVALU
AVAILA
KIT
BLE
Parallelable, Clamped Two-Switch
Power-Supply Controller IC
General Description
The MAX5051 is a clamped, two-switch power-supply
controller IC. This device can be used both in forward or
flyback configurations with input voltage ranges from 11V
to 76V. It provides comprehensive protection mech-
anisms against possible faults, resulting in very high relia-
bility power supplies. When used in conjunction with sec-
ondary-side synchronous rectification, power-supply
efficiencies can easily reach 92% for a +3.3V output
power supply operated from a 48V bus. The integrated
high- and low-side gate drivers provide more than 2A of
peak gate-drive current to two external N-channel
MOSFETs. Low startup current reduces the power loss
across the bootstrap resistor. A feed-forward voltage-
mode topology provides excellent line rejection while
avoiding the pitfalls of traditional current-mode control.
The MAX5051 power-supply controller is primary as
well as secondary-side parallelable, allowing the
design of scaleable power systems when necessary.
When paralleling the primary side, dedicated pins allow
for simultaneous wakeup or shutdown of all paralleled
units, thus preventing current-hogging during startup or
fault conditions.
The MAX5051 generates a lookahead signal for driving
secondary-side synchronous MOSFETs. Special
primary-side synchronization inputs/outputs allow two
primaries to be operated 180° out of phase for increased
output power and lower input ripple currents.
The MAX5051 is available in a 28-pin TSSOP-EP
package and operates over a wide -40°C to +125°C
temperature range.
Warning: The MAX5051 is designed to work with
high voltages. Exercise caution.
Applications
High-Efficiency, Isolated Telecom/Datacom
Features
o Wide Input Voltage Range, 11V to 76V
o Voltage Mode with Input Voltage Feed-Forward
o Ripple-Phased Parallel Topology for High
Current/Power Output
o 2A Integrated High- and Low-Side MOSFET
Drivers
o SYNCIN And SYNCOUT Pins Enable 180° Out-Of-
Phase Operation
o Programmable Brownout and Bootstrap UVLOs
o High-Side Driver Bootstrap Capacitor Precharge
Driver
o Low Current-Limit Threshold for High Efficiency
o Programmable Switching Frequency
o Reference Voltage Soft-Start for Startup Without
Overshoots
o Startup Synchronization with Multiple Paralleled
Primaries
o Programmable Integrating Current-Limit Fault
Protection
o Look-Ahead PWM Signal for Secondary-Side
Synchronous Rectifier Drivers
o Look-Ahead Drivers for Either A High-Speed
Optocoupler or Pulse Transformer
o Wide -40°C to +125°C Operating Range
o Thermally Enhanced 28-Pin TSSOP Package
Ordering Information
Power Supplies
48V and 12V Server Power Supplies
48V Power-Supply Modules
PART
MAX5051AUI
* EP = Exposed pad.
TEMP RANGE
-40 ° C to +125 ° C
PIN-PACKAGE
28-TSSOP-EP*
42V Automotive Power Systems
Industrial Power Supplies
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5051AUI+ | 功能描述:开关变换器、稳压器与控制器 Parallelable Clamped Two-Switch PSC RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MAX5051AUI+T | 功能描述:开关变换器、稳压器与控制器 Parallelable Clamped Two-Switch PSC RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MAX5051AUI-T | 功能描述:开关变换器、稳压器与控制器 Parallelable Clamped Two-Switch PSC RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MAX5051EUI+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5051EVKIT | 功能描述:电源管理IC开发工具 MAX5051 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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