Isolation

Amplifier

COMMUNICATION

(Programming & Status Reporting)

14

1

12

8

VDD

PVDD

CS

10

OUT2

3

4

2

5

6

IN1

AGND

3V3

IN2

CLF

7

UCD7201PWP

11

OUT1

9

PGND

13

NC

ILIM

NC

Bias Supply

Bias Winding

VIN

VOUT

DIGITAL

CONTROLLER

GND

PWMA

ADC4

INTERRUPT or CCR

PWMB

ADC3

VCC

PWM or GPIO

ADC1

ADC2

Product

Folder

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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

3 Description

The UCD7201 is a member of the UCD7K family of

1

•

Adjustable Current Limit Protection

digital control compatible drivers for applications

•

3.3-V, 10-mA Internal Regulator

utilizing digital control techniques or applications

•

DSP/

μC Compatible Inputs

requiring fast local peak current limit protection.

•

Dual ±4-A TrueDrive™ High Current Drivers

The UCD7201 includes dual low-side ±4-A high-

•

10-ns Typical Rise and Fall Times with 2.2-nF

current MOSFET gate drivers. It allows the digital

Loads

power controllers such as UCD9110 or UCD9501 to

interface to the power stage in double ended

•

20-ns Input-to-Output Propagation Delay

topologies. It provides a cycle-by-cycle current limit

•

25-ns Current Sense-to-Output Propagation Delay

function for both driver channels, a programmable

•

Programmable Current Limit Threshold

threshold and a digital output current limit flag which

can be monitored by the host controller. With a fast

•

Digital Output Current Limit Flag

cycle-by-cycle current limit protection, the driver can

•

4.5-V to 15-V Supply Voltage Range

turn off the power stage in the event of an

•

Rated from -40°C to 105°C

overcurrent condition.

2 Applications

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Digitally Controlled Power Supplies

UCD7201

HTSSOP (14)

4.40 mm x 5.00 mm

•

DC/DC Converters

(1) For all available packages, see the orderable addendum at

•

Motor Controllers

the end of the datasheet.

•

Line Drivers

Typical Application Diagram (Push-Pull Converter)

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.