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MOSFET Driver. UCD7100 Datasheet

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MOSFET Driver. UCD7100 Datasheet
















UCD7100 Driver. Datasheet pdf. Equivalent













Part

UCD7100

Description

Digital Control Compatible Single Low-Side MOSFET Driver



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCD7100 SLUS651D – MARCH 2 005 – REVISED OCTOBER 2014 UCD7100 Di gital Control Compatible Single Low-Sid e ±4-A MOSFET Driver with Current Sens e 1 Features •1 Adjustable Current L imit Protection • 3.3-V, 10-mA Intern al Regulator • DSP/µC Compatible Inp uts • Single ±4-A TrueDrive™ H.
Manufacture

Texas Instruments

Datasheet
Download UCD7100 Datasheet


Texas Instruments UCD7100

UCD7100; igh Current Driver • 10-ns Typical Ris e and Fall Times with 2.2-nF Loads • 25-ns Input-to-Output Propagation Delay • 25-ns Current Sense to Output Dela y • Programmable Current Limit Thresh old • Digital Output Current Limit Fl ag • 4.5-V to 15-V Supply Voltage Ran ge • Rated from -40°C to 105°C • Lead(Pb)-Free Packaging 2 Applications • Digitally Controlled Power Supplie.


Texas Instruments UCD7100

s • DC/DC Converters • Motor Control lers • Line Drivers 3 Description Th e UCD7100 is a member of the UCD7K fami ly of digital control compatible driver s for applications utilizing digital co ntrol techniques or applications requir ing fast local peak current limit prote ction. The UCD7100 is a low-side ±4-A high-current MOSFET gate driver. It all ows the digital power con.


Texas Instruments UCD7100

trollers such as UCD9110 or UCD9501 to i nterface to the power stage in single e nded topologies. It provides a cycle-by -cycle current limit function with prog rammable threshold and a digital output current limit flag which can be monito red by the host controller. With a fast 25-ns cycle-by-cycle current limit pro tection, the driver can turn off the po wer stage in the u.





Part

UCD7100

Description

Digital Control Compatible Single Low-Side MOSFET Driver



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UCD7100 SLUS651D – MARCH 2 005 – REVISED OCTOBER 2014 UCD7100 Di gital Control Compatible Single Low-Sid e ±4-A MOSFET Driver with Current Sens e 1 Features •1 Adjustable Current L imit Protection • 3.3-V, 10-mA Intern al Regulator • DSP/µC Compatible Inp uts • Single ±4-A TrueDrive™ H.
Manufacture

Texas Instruments

Datasheet
Download UCD7100 Datasheet




 UCD7100
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
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.




 UCD7100
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




 UCD7100
www.ti.com
UCD7100
SLUS651D – MARCH 2005 – REVISED OCTOBER 2014
5 Description (continued)
For fast switching speeds, the UCD7100 output stage uses the TrueDrive™ output architecture, which delivers
rated current of ±4 A into the gate of a MOSFET during the Miller plateau region of the switching transition. It
also includes a 3.3-V, 10-mA linear regulator to provide power to the digital controller.
The UCD7000 driver family is compatible with standard 3.3-V I/O ports of DSPs, Microcontrollers, or ASICs.
UCD7100 is offered in aPowerPAD™ HTSSOP-14.
6 Pin Configuration and Functions
UCD7100
HTSSOP DFN-14
-14 PIN # PIN #
1
1
PIN
NAME
VDD
2
2
IN
3
3
3V3
4
4
AGND
5
5
CLF
6
6
ILIM
7
7
NC
8
8
CS
9
9
PGND
10
10
PGND
11
11
OUT
12
12
OUT
13
13
PVDD
14
14
PVDD
VDD
IN
3V3
AGND
CLF
ILIM
NC
PWP
14 PINS
Top View
1
14
2
13
3
12
4
11
5
10
6
9
7
8
PVDD
PVDD
OUT
OUT
PGND
PGND
CS
NC − No internal connection
Pin Functions
I/O
FUNCTION
I
Supply input pin to power the driver. The UCD7K devices accept an input range of 4.25 V to
15 V. Bypass the pin with at least 4.7 µF of capacitance.
The IN pin is a high impedance digital input capable of accepting 3.3-V logic level signals up
I
to 2 MHz. There is an internal Schmitt trigger comparator which isolates the internal circuitry
from any external noise.
O
Regulated 3.3-V rail. The onboard linear voltage regulator is capable of sourcing up to 10 mA
of current. Place 0.22-µF of ceramic capacitance from the pin to ground.
-
Analog ground return.
Current limit flag. When the CS level is greater than the ILIM voltage minus 25 mV, the output
O of the driver is forced low and the current limit flag (CLF) is set high. The CLF signal is
latched high until the UCD7K device receives the next rising edge on the IN pin.
I
Current limit threshold set pin. The current limit threshold can be set to any value between
0.25 V and 1.0 V.
-
No Connection.
I
Current sense pin. Fast current limit comparator connected to the CS pin is used to protect
the power stage by implementing cycle-by-cycle current limiting.
-
Power ground return. Connect the two PGNDs together. These ground pins should be
connected very closely to the source of the power MOSFET.
-
Power ground return. Connect the two PGNDs together. These ground pins should be
connected very closely to the source of the power MOSFET.
O The high-current TrueDrive™ driver output. Connect the two OUT pins together.
O The high-current TrueDrive™ driver output. Connect the two OUT pins together.
I
Supply pin provides power for the output drivers. It is not connected internally to the VDD
supply rail. Connect the two PVDD pins together.
I
Supply pin provides power for the output drivers. It is not connected internally to the VDD
supply rail. Connect the two PVDD pins together.
Copyright © 2005–2014, Texas Instruments Incorporated
Product Folder Links: UCD7100
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