LM5104 - High Voltage Half-Bridge Gate Driver with Adaptive Delay

Datasheet Packaging Samples & Pricing Application Notes Knowledge Base

Features
•Drives both a high side and low side N-channel MOSFET
•Adaptive rising and falling edges with programmable additional delay
•Single input control
•Bootstrap supply voltage range up to 118V DC
•Fast turn-off propagation delay (25 ns typical)
•Drives 1000 pF loads with 15 ns rise and fall times
•Supply rail under-voltage lockout

General Description

The LM5104 High Voltage Gate Driver is designed to drive both the high side and the low side N-Channel MOSFETs in a synchronous buck configuration. More...


  Typical Application
*click for larger image


Parametric Table     expand
Parametric Table    collapse
Topology Synchronous Buck, Bridge
Input Max Voltage 100 Volt
Supply Min 7.5 Volt
Supply Max 14 Volt
Peak Sink Current 2 Amp
Peak Source Current 2 Amp
Output Fall Time tf 10 ns
Bottom Driver Prop Delay 35 ns
TopDriver PropDelay 35 ns
Topology Synchronous Buck, Bridge
Input Max Voltage 100 Volt
Supply Min 7.5 Volt
Supply Max 14 Volt
Peak Sink Current 2 Amp
Peak Source Current 2 Amp
Output Rise Time (tr) 10 ns
Output Fall Time tf 10 ns
Bottom Driver Prop Delay 35 ns
TopDriver PropDelay 35 ns
PulseWidth Min 50 ns
Quiescent Current 0.4 mA
HighSide Drive Yes
LowSide Drive Yes
Outputs 2
LowGate Enable No
UVLO Yes
Shut down No
Internal BootDiode Yes
Input Control Single PWM
Special Features Adaptive deadtime with programmable delay
RegType MOSFET Driver
Temperature Min -40 deg C
Temperature Max 125 deg C
View Using Catalog


Typical Performance

*click for larger image


  Also Recommended
LM5102Individual Low Side And High Side Inputs, Programmable Delay
LM5105Has Low Gate Enable Pin
LM27223.2A Pk, 4V To 7V Ic Vcc, 36V Max Vin

Additional Resources

Online Seminars Application Notes (see below)


Block Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM5104 High Voltage Half-Bridge Gate Driver with Adaptive Delay 350 Kbytes 1-Dec-08 Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM5104MSOIC NARROW8STD
NOPB		1
1		235
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.35rail
of
95		NSZXTT
5104
M
8 weeks500
LM5104MXSOIC NARROW8STD
NOPB		1
1		235
260		RoHS Download Full productionN/A
 
Buy Now 		1K+$1.35reel
of
2500		NSZXTT
5104
M
8 weeks3000
LM5104SDLLP10NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.35reel
of
1000		NS
UZXYTT
5104SD
6 weeks2000
LM5104SDXLLP10NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.35reel
of
4500		NS
UZXYTT
5104SD
6 weeksN/A

General Description

The LM5104 High Voltage Gate Driver is designed to drive both the high side and the low side N-Channel MOSFETs in a synchronous buck configuration. The floating high-side driver is capable of working with supply voltages up to 100V. The high side and low side gate drivers are controlled from a single input. Each change in state is controlled in an adaptive manner to prevent shoot-through issues. In addition to the adaptive transition timing, an additional delay time can be added, proportional to an external setting resistor. An integrated high voltage diode is provided to charge high side gate drive bootstrap capacitor. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high side gate driver. Under-voltage lockout is provided on both the low side and the high side power rails. This device is available in the standard SOIC-8 pin and the LLP-10 pin packages.

More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1317: Application Note 1317 Selection of External Bootstrap Diode for LM510X Devices 92 Kbytes 25-Feb-04 Download
AN-1317 (Japanese): Application Note 1317 Selection of External Bootstrap Diode for LM510X Devices
 122 Kbytes   Download
AN-1317 (Chinese): Application Note 1317 Selection of External Bootstrap Diode for LM510X Devices
 193 Kbytes  
AN-1331: Application Note 1331 LM5033 Evaluation Board 507 Kbytes 27-May-04 Download
AN-1299: Application Note 1299 LM5041 Evaluation Board 287 Kbytes 16-Mar-04 Download
AN-1923: Application Note 1923 Current Sense Demo Board (SOIC) User`s Guide 3507 Kbytes 29-Apr-09 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 4-Jul-2009]