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UCD7100_17 Datasheet, PDF (1/31 Pages) Texas Instruments – Digital Control Compatible Single Low-Side 4-A MOSFET Driver with Current Sense | |||
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UCD7100
SLUS651D â MARCH 2005 â REVISED OCTOBER 2014
UCD7100 Digital Control Compatible Single Low-Side ±4-A MOSFET Driver with Current
Sense
1 Features
â¢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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