UCD7100_15 Datasheet, PDF (1/31 Pages) Texas Instruments – UCD7100 Digital Control Compatible Single Low-Side ±4-A MOSFET Driver with Current Sense

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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.