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PDF LM5105 Data sheet ( Hoja de datos )
| Número de pieza | LM5105 | |
| Descripción | 100V Half Bridge Gate Driver | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM5105 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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LM5105
May 26, 2011
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 –Channel 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 pow-
er and provides clean output transitions. Under-voltage lock-
out disables the gate driver when either the low side or the
bootstrapped high side supply voltage is below the operating
threshold. The LM5105 is offered in the thermally enhanced
10-pin LLP plastic package.
Features
■ Drives both a high side and low side N-channel MOSFET
■ 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
■ Solid State motor drives
■ Half and Full Bridge power converters
Package
■ LLP-10 (4 mm x 4 mm)
Simplified Block Diagram
FIGURE 1.
© 2011 National Semiconductor Corporation 201375
20137502
www.national.com
1 page  
Typical Performance Characteristics
VDD Operating Current vs Frequency
Operating Current vs Temperature
20137510
Quiescent Current vs Supply Voltage
20137511
Quiescent Current vs Temperature
20137512
HB Operating Current vs Frequency
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HO & LO Peak Output Current vs Output Voltage
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5
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www.national.com
5 Page 
20137508
FIGURE 6. LM5105 Driving MOSFETs Connected in Half-Bridge Configuration
11 www.national.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LM5105.PDF ] | |
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