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LM5105SD Datasheet

  • LM5105SD

  • 100V Half Bridge Gate Driver with Programmable Dead-time

  • 12頁

  • NSC

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LM5105 100V Half Bridge Gate Driver with Programmable Dead-time
February 2005
LM5105
100V Half Bridge Gate Driver with Programmable
Dead-time
General Description
The LM5105 is a high voltage gate driver designed to drive
both the high side and low side N 鈥揅hannel MOSFETs in a
synchronous buck or half bridge configuration. The floating
high-side driver is capable of working with rail voltages up to
100V. The single control input is compatible with TTL signal
levels and a single external resistor programs the switching
transition dead-time through tightly matched turn-on delay
circuits. A high voltage diode is provided to charge the high
side gate drive bootstrap capacitor. The robust level shift
technology operates at high speed while consuming low
power and provides clean output transitions. Under-voltage
lockout disables the gate driver when either the low side or
the bootstrapped high side supply voltage is below the op-
erating threshold. The LM5105 is offered in the thermally
enhanced 10-pin LLP plastic package.
n
n
n
n
n
n
n
n
n
n
1.8A peak gate drive current
Bootstrap supply voltage range up to 118V DC
Integrated bootstrap diode
Single TTL compatible Input
Programmable turn-on delays (Dead-time)
Enable Input pin
Fast turn-off propagation delays (26ns typical)
Drives 1000pF with 15ns rise and fall time
Supply rail under-voltage lockout
Low power consumption
Typical Applications
n
Solid State motor drives
n
Half and Full Bridge power converters
n
Two switch forward power converters
Features
n
Drives both a high side and low side N-channel
MOSFET
Package
n
LLP-10 (4 mm x 4 mm)
Simplified Block Diagram
20137502
FIGURE 1.
漏 2005 National Semiconductor Corporation
DS201375
www.national.com

LM5105SD 產(chǎn)品屬性

  • National Semiconductor (TI)

  • High and Low Side

  • 15 ns (Typ)

  • 15 ns (Typ)

  • 14 V

  • 8 V

  • 1.65 mA (Typ)

  • + 125 C

  • SMD/SMT

  • LLP EP

  • Reel

  • Inverting, Non-Inverting

  • - 40 C

  • 2

  • 2

  • 1.8 A (Typ)

  • 1000

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