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UCD7100 Datasheet Preview

UCD7100 Datasheet

Digital Control Compatible Single Low-Side MOSFET Driver

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UCD7100
SLUS651D – MARCH 2005 – REVISED OCTOBER 2014
UCD7100 Digital Control Compatible Single Low-Side ±4-A MOSFET Driver with Current
Sense
1 Features
1 Adjustable Current Limit Protection
• 3.3-V, 10-mA Internal Regulator
• DSP/µC Compatible Inputs
• Single ±4-A TrueDrive™ High Current Driver
• 10-ns Typical Rise and Fall Times with 2.2-nF
Loads
• 25-ns Input-to-Output Propagation Delay
• 25-ns Current Sense to Output Delay
• Programmable Current Limit Threshold
• Digital Output Current Limit Flag
• 4.5-V to 15-V Supply Voltage Range
• Rated from -40°C to 105°C
• Lead(Pb)-Free Packaging
2 Applications
• Digitally Controlled Power Supplies
• DC/DC Converters
• Motor Controllers
• Line Drivers
3 Description
The UCD7100 is a member of the UCD7K family of
digital control compatible drivers for applications
utilizing digital control techniques or applications
requiring fast local peak current limit protection.
The UCD7100 is a low-side ±4-A high-current
MOSFET gate driver. It allows the digital power
controllers such as UCD9110 or UCD9501 to
interface to the power stage in single ended
topologies. It provides a cycle-by-cycle current limit
function with programmable threshold and a digital
output current limit flag which can be monitored by
the host controller. With a fast 25-ns cycle-by-cycle
current limit protection, the driver can turn off the
power stage in the unlikely event that the digital
system can not respond to a failure situation in time.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCD7100
HTSSOP (14)
5.00 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
VIN
VOUT
Digital Controller
AN1
VDD
PWMA
AGND
INT
PWMB
UCD7100PWP
3 3V3
VDD 14
2 IN
5 CLF
6 ILIM
4 AGND
OUT 12
CS 8
Bias
Winding
Communication
AN2
AN3
2
Isolation
Amplifier
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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UCD7100 Datasheet Preview

UCD7100 Datasheet

Digital Control Compatible Single Low-Side MOSFET Driver

No Preview Available !

UCD7100
SLUS651D – MARCH 2005 – REVISED OCTOBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 Handling Ratings ...................................................... 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Typical Characteristics .............................................. 7
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 13
9 Application and Implementation ........................ 14
9.1 Application Information............................................ 14
9.2 Typical Application .................................................. 14
10 Power Supply Recommendations ..................... 16
10.1 Supply ................................................................... 16
10.2 Reference / External Bias Supply ......................... 16
11 Layout................................................................... 17
11.1 Layout Guidelines ................................................. 17
11.2 Layout Example .................................................... 17
11.3 Thermal Considerations ........................................ 18
12 Device and Documentation Support ................. 19
12.1 Device Support .................................................... 19
12.2 Documentation Support ....................................... 19
12.3 Trademarks ........................................................... 19
12.4 Electrostatic Discharge Caution ............................ 19
12.5 Glossary ................................................................ 19
13 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
DATE
March 2005
April 2009
May 2010
REVISION
SLUS651
SLUS651B
SLUS651C
October 2014 SLUS651D
CHANGE DESCRIPTION
Initial release
Removed QFN package option and all references.
Removed part numbers, UCD7500, UCD7600, UCD7601 and UCD9501 from Related Products
Section.
Added Handling Rating table, Feature Description section, Device Functional Modes, Application
and Implementation section, Power Supply Recommendations section, Layout section, Device and
Documentation Support section, and Mechanical, Packaging, and Orderable Information section.
2
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Product Folder Links: UCD7100
Copyright © 2005–2014, Texas Instruments Incorporated


Part Number UCD7100
Description Digital Control Compatible Single Low-Side MOSFET Driver
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