Datasheet > MP3908

MP3908

更新时间： 2024-04-09 19:02:44

品牌	Logo	应用领域
芯源 - MPS		栅极驱动控制器驱动器
页数	文件大小	规格书
11页	268K
描述
集成同步栅极驱动器的电流模式PWM控制器

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中文翻译

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MP3908 数据手册

MP3908

Current Mode PWM Controller

with Synchronous Secondary Gate Drive

The Future of Analog IC Technology

DESCRIPTION

FEATURES

The MP3908 is a flexible current-mode PWM

•

Programmable Dead-Time

Synchronous Secondary Gate Drive

Current Mode Control

10V MOSFET Gate Drivers

Drives >10A MOSFETs

Soft-Start

Cycle-by-Cycle Current Limiting

Slope Current Compensation

Lossless Current Sense (V_ISENSE<28V)

50µA Shutdown Current

270uA typical Operating Current

250KHz Constant Frequency Operation

Applicable to Boost, SEPIC, Flyback and

Forward Topologies

controller

optimized

for

power-supply

applications. The MP3908 features resistor-

programmable dead-time control to optimize

efficiency for a broad number of different

configurations, and a synchronous secondary

gate drive. The MOSFET drivers are capable

of driving >10A MOSFETs. It has an operational

current of typically 270µA and can accommodate

off-line, Telecom and non-isolated applications.

Under-voltage

lockout,

soft-start,

slope

compensation and peak current limiting are all

included. In a boost application, with an output

voltage of less than 28V, the current sense pin

can connect directly to the drain of the external

switch. This eliminates the requirement for an

additional current sensing element and its

associated efficiency loss.

•

Available in a 10-Pin MSOP Package

APPLICATIONS

•

PoE PD Power Supplies

TV CCFL Power Generation

Telecom Isolated Power

Brick Modules

While designed for boost applications, the MP3908

can also be used for other topologies including

Forward, Flyback and Sepic. The 10V gate driver

compliance minimizes the power loss of the external

MOSFET while allowing the use of a wide variety of

standard threshold devices. An externally

programmable delay following the turn off of the

synchronous rectifier allows the incorporation of

secondary side synchronous rectifier

Off-line Controller

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

The MP3908 is available in space saving 10-pin

MSOP package.

TYPICAL APPLICATION

Efficiency vs.

Output Current

VCC

GND

DELAY

ADJ

MP3908

MAIN

ISENSE

SYNC

CSS

COMP

OUTPUT CURRENT (A)

MP3908 Rev.0.9

8/29/2008

www.MonolithicPower.com

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

12 3 4 5 6 7...11

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与MP3908相关器件

型号	品牌	获取价格	描述	数据表
MP3908DK	MPS	获取价格	Switching Controller, Current-mode, 300kHz Switching Freq-Max, PDSO10, MO-817BA, MSOP-10
MP3910	MPS	获取价格	Peak Current Mode. Boost PWM Controller with Programmable Frequency, External Soft Start,
MP3910A	MPS	获取价格	Peak Current Mode Boost PWM Controller with Programmable Frequency, External Soft Start Li
MP3910AGS	MPS	获取价格	Peak Current Mode Boost PWM Controller with Programmable Frequency, External Soft Start Li
MP3924	MPS	获取价格	符合 IEEE 802.3af/at 标准的四路端口 PSE 控制器，适合以太网供电应用
MP39A	APEX	获取价格	POWER OPERATIONAL AMPLIFIER
MP39CLA	CIRRUS	获取价格	Operational Amplifier, 1 Func, 3000uV Offset-Max, Hybrid, DIP-30
MP3H6115A	FREESCALE	获取价格	High Temperature Accuracy Integrated Silicon Pressure Sensor
MP3H6115A_09	FREESCALE	获取价格	High Temperature Accuracy Integrated Silicon Pressure Sensor
MP3H6115A6	NXP	获取价格	Pressure Sensor, 3V, 15/115kPa, SOP 8

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