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  4. Current Mode PWM Controller MP3908 with Synchronous Rectifier Gate Driver (Monolithic Power Systems, Inc.)
Current Mode PWM Controller MP3908 with Synchronous Rectifier Gate Driver-MP3908
Current Mode PWM Controller MP3908 with Synchronous Rectifier Gate Driver-Monolithic Power Systems, Inc.

Current Mode PWM Controller MP3908 with Synchronous Rectifier Gate Driver
Monolithic Power Systems, Inc.

About This Product

■Summary

The MP3908 is a flexible current mode PWM controller optimized for power applications. The MP3908 features resistor programmable dead-time control and synchronous rectified secondary gate drive to optimize efficiency for various configurations. The MOSFET driver can drive MOSFETs over 10A. The operating current is typically 270µA for offline, telecommunications, and non-isolated applications. Undervoltage lockout, soft-start, slope compensation, and peak current limiting are all included. For boost applications with output voltages less than 28V, the current sense pin can be connected directly to the drain of an external switch. This eliminates the need for additional current sensing elements and the associated efficiency loss. The MP3908 is designed for boost applications, but can also be used in other topologies such as forward, flyback, and SEPIC. 10V gate driver compliance minimizes external MOSFET power dissipation while allowing use of various standard threshold ICs. An externally programmable delay after synchronous rectifier turn-off allows integration of a secondary side synchronous rectifier. The MP3908 is available in a space-saving 10-pin MSOP package.

■Features and benefits

・Programmable dead time ・Synchronous rectification secondary side gate drive ・Current mode control ・10V MOSFET gate driver ・Drives >10A MOSFET ・Soft start ・Current limit per cycle ・Slope current compensation ・Lossless current detection (VISENSE<28V) ・50μ shutdown current ・270uA typical operating current ・250kHz fixed frequency operation -Applicable to boost, SEPIC, flyback, and forward topologies ・Available in a 10-pin MSOP package

■Available product numbers

・MP3908DK-LF-P MP3908DK-LF-Z ・Part numbers ending in P and Z are the same part. P and Z indicate reel size only

  • Product

    Current Mode PWM Controller MP3908 with Synchronous Rectifier Gate Driver

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1 Models of Current Mode PWM Controller MP3908 with Synchronous Rectifier Gate Driver

Image Part Number Price (excluding tax) Iq (typ) (mA) Max Duty Cycle (%) P.G. Regulated Outputs SS Special Features Vfb (V) Grade Package (mm) Input voltage (max) (V) Input voltage (min) (V)
Current Mode PWM Controller MP3908 with Synchronous Rectifier Gate Driver-Part Number-MP3908

MP3908

Available upon quote

0.27

0.86

No

1

External

Frequency Synchronization

0.818

Catalog

MSOP-10

10

4.75

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About Company Handling This Product

Monolithic Power Systems, Inc.

Company Overview

Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer o...

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