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Freescale Semiconductor Electronic Components Datasheet

MCZ33887 Datasheet

5.0 A H-Bridge

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MCZ33887 pdf
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Technical Data
Document Number: MC33887
Rev. 12.0, 2/2007
5.0 A H-Bridge with Load
Current Feedback
The 33887 is a monolithic H-Bridge Power IC with a load current
feedback feature making it ideal for closed-loop DC motor control.
The IC incorporates internal control logic, charge pump, gate drive,
and low RDS(ON) MOSFET output circuitry. The 33887 is able to
control inductive loads with continuous DC load currents up to 5.0 A,
and with peak current active limiting between 5.2 A and 7.8 A. Output
loads can be pulse width modulated (PWM-ed) at frequencies up to
10 kHz. The load current feedback feature provides a proportional (1/
375th of the load current) constant-current output suitable for
monitoring by a microcontroller’s A/D input. This feature facilitates
the design of closed-loop torque/speed control as well as open load
detection.
A Fault Status output pin reports undervoltage, short circuit, and
overtemperature conditions. Two independent inputs provide polarity
control of two half-bridge totem-pole outputs. Two disable inputs
force the H-Bridge outputs to tri-state (exhibit high impedance).
The 33887 is parametrically specified over a temperature range of
-40°C TA 125°C and a voltage range of 5.0 V V+ 28 V.
Operation with voltages up to 40 V with derating of the specifications.
Features
• Fully specified operation 5.0 V to 28 V
• Limited operation with reduced performance up to 40 V
• 120 mRDS(ON) Typical H-Bridge MOSFETs
• TTL/CMOS Compatible Inputs
• PWM Frequencies up to 10 kHz
• Active Current Limiting (Regulation)
• Fault Status Reporting
• Sleep Mode with Current Draw 50 µA (Inputs Floating or Set
to Match Default Logic States)
• Pb-Free Packaging Designated by Suffix Codes VW and EK
33887
H-BRIDGE
DH SUFFIX
VW SUFFIX (Pb-FREE)
98ASH70273A
20-PIN HSOP
PNB SUFFIX
98ASA10583D
36-PIN PQFN
Bottom View
DWB SUFFIX
EK SUFFIX (Pb-FREE)
98ASA10506D
54-PIN SOICW-EP
ORDERING INFORMATION
Device
MC33887DH/R2
MC33887VW/R2
Temperature
Range (TA)
Package
20 HSOP
MC33887PNB/R2 -40°C to 125°C
36 PQFN
MC33887DWB/R2
MCZ33887EK/R2
54 SOICW-EP
6.0 V
MCU
IN
OUT
OUT
OUT
OUT
OUT
A/D
CCP
FS
EN
IN1
IN2
D1
D2
FB
33887
V+
OUT1
OUT2
PGND
AGND
V+
MOTOR
Figure 1. 33887 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2007. All rights reserved.


Freescale Semiconductor Electronic Components Datasheet

MCZ33887 Datasheet

5.0 A H-Bridge

No Preview Available !

MCZ33887 pdf
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
CCP
VPWR
EN CHARGE PUMP
8 µA
(EACH)
5.0 V
REGULATOR
IN1
IN2 GATE
D1 DRIVE
CONTROL
D2
25 µA
LOGIC
OVER
TEMPERATURE
FS
FB UNDERVOLTAGE
CURRENT
LIMIT,
OVERCURRENT
SENSE &
FEEDBACK
CIRCUIT
AGND
PGND
Figure 2. 33887 Simplified Internal Block Diagram
OUT1
OUT2
33887
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Part Number MCZ33887
Description 5.0 A H-Bridge
Maker Freescale Semiconductor
Total Page 30 Pages
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