UCD7201_15 Datasheet, PDF (1/30 Pages) Texas Instruments – UCD7201 Digital Control Compatible Dual Low-Side ±4 Amp MOSFET Drivers with Programmable Common Current Sense

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UCD7201
SLUS645F – FEBRUARY 2005 – REVISED DECEMBER 2014
UCD7201 Digital Control Compatible Dual Low-Side ±4 Amp MOSFET Drivers with
Programmable Common Current Sense
1 Features
•1 Adjustable Current Limit Protection
• 3.3-V, 10-mA Internal Regulator
• DSP/μC Compatible Inputs
• Dual ±4-A TrueDrive™ High Current Drivers
• 10-ns Typical Rise and Fall Times with 2.2-nF
Loads
• 20-ns Input-to-Output Propagation Delay
• 25-ns Current Sense-to-Output Propagation 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
3 Description
The UCD7201 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 UCD7201 includes dual low-side ±4-A high-
current MOSFET gate drivers. It allows the digital
power controllers such as UCD9110 or UCD9501 to
interface to the power stage in double ended
topologies. It provides a cycle-by-cycle current limit
function for both driver channels, a programmable
threshold and a digital output current limit flag which
can be monitored by the host controller. With a fast
cycle-by-cycle current limit protection, the driver can
turn off the power stage in the event of an
overcurrent condition.
2 Applications
• Digitally Controlled Power Supplies
• DC/DC Converters
• Motor Controllers
• Line Drivers
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCD7201
HTSSOP (14)
4.40 mm x 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Diagram (Push-Pull Converter)
VIN
Bias Winding
Bias Supply
DIGITAL
CONTROLLER
UCD7201PWP
1 NC
NC 14
ADC1
VCC
2 3V3
VDD 13
VOUT
GND
ADC2
PWMA
PWMB
INTERRUPT or CCR
PWM or GPIO
ADC3
ADC4
4 AGND
PVDD 12
3 IN1
OUT1 11
5 IN2
OUT2 10
6 CLF
PGND 9
7 ILIM
CS 8
COMMUNICATION
(Programming & Status Reporting)
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.