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PDF PC33887VW Data sheet ( Hoja de datos )
| Número de pieza | PC33887VW | |
| Descripción | 5.0 A H-Bridge with Load Current Feedback | |
| Fabricantes | Motorola Inc | |
| Logotipo |  |
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MOTOROLA
Freescale Semiconductor, Inc.
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33887
Rev 9.0, 10/2004
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 terminal 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. The IC can also
be operated up to 40 V with derating of the specifications.
Features
• 5.0 V to 40 V Continuous Operation
• 120 mΩ RDS(ON) H-Bridge MOSFETs
• TTL/CMOS Compatible Inputs
• PWM Frequencies up to 10 kHz
• Active Current Limiting (Regulation) via Internal Constant OFF-Time
PWM (with Temperature-Dependent Threshold Reduction)
• Output Short Circuit Protection (Short to V+ or Short to GND)
• Undervoltage Shutdown
• 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 PNB
33887
5.0 A H-BRIDGE WITH LOAD
CURRENT FEEDBACK
DH SUFFIX
VW (Pb-FREE) SUFFIX
CASE 979-04
20-TERMINAL HSOP
PNB (Pb-FREE) SUFFIX
CASE 1503-01
36-TERMINAL PQFN
Bottom View
DWB SUFFIX
CASE 1390-01
54-TERMINAL SOICW-EP
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33887DH/R2
PC33887VW/R2
MC33887PNB/R2
MC33887DWB/R2
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
20 HSOP
36 PQFN
54 SOICW-EP
3333888877SSiimmSpipmllipiffiliiefeideddAAAppppppllicliicacataiottiniooDnniaDgDriaiaamggrraamm
5.0 V
3333888877
V+
CCP V+
IN
MCU
OUT
OUT
OUT
OUT
OUT
A/D
OUT1
FS
MOTOR
EN
IN1 OUT2
IN2
D1 PGND
D2
FB AGND
© Motorola, Inc. 2004
For More Information On This Product,
Go to: www.freescale.com
1 page  
Freescale Semiconductor, Inc.
Transparent Top View of Package
PGND
PGND
PGND
PGND
NC
NC
NC
D2
NC
OUT2
OUT2
OUT2
OUT2
NC
V+
V+
V+
V+
NC
NC
NC
NC
CCP
D1
IN2
EN
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
54 PGND
53 PGND
52 PGND
51 PGND
50 NC
49 NC
48 NC
47 FB
46 NC
45 OUT1
44 OUT1
43 OUT1
42 OUT1
41 NC
40 V+
39 V+
38 V+
37 V+
36 NC
.35 NC
34 NC
33 NC
32 IN1
31 FS
30 AGND
29 NC
28 NC
SOICW-EP TERMINAL DEFINITIONS
A functional description of each terminal can be found in the System/Application Information section, page 19.
Terminal
Terminal
Name
Formal Name
Definition
1–4, 51–54
PGND
Power Ground
High-current power ground.
5–7, 9, 14, 19–22,
27– 29, 33–36, 41,
46, 48–50
NC
No Connect
No internal connection to this terminal.
8
D2
Disable 2
Active LOW input used to simultaneously tri-state disable both H-Bridge
outputs. When D2 is Logic LOW, both outputs are tri-stated.
10 – 13
OUT2
H-Bridge Output 2
Output 2 of H-Bridge.
15 –18, 37–40
V+
Positive Power Supply
Positive supply connections.
23
CCP
Charge Pump Capacitor External reservoir capacitor connection for internal charge pump capacitor.
24 D1
Disable 1
Active HIGH input used to simultaneously tri-state disable both H-Bridge
outputs. When D1 is Logic HIGH, both outputs are tri-stated.
25
IN2
Logic Input Control 2
Logic input control of OUT2 (i.e., IN2 logic HIGH = OUT2 HIGH).
26 EN
Enable
Logic input Enable control of device (i.e., EN logic HIGH = full operation,
EN logic LOW = Sleep Mode).
30
AGND
Analog Ground
Low-current analog signal ground.
31 FS Fault Status for H-Bridge Open drain active LOW Fault Status output requiring a pullup resistor to
5.0 V.
32
IN1
Logic Input Control 1
Logic input control of OUT1 (i.e., IN1 logic HIGH = OUT1 HIGH).
42 – 45
OUT1
H-Bridge Output 1
Output 1 of H-Bridge.
47
FB
Feedback for H-Bridge
Current feedback output providing ground referenced 1/375th ratio of
H-Bridge high-side current.
Pad
Thermal
Exposed Pad Thermal
Exposed pad thermal interface for sinking heat from the device.
Interface
Interface
Note Must be DC-coupled to analog ground and power ground via very low
impedance path to prevent injection of spurious signals into IC substrate.
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
For More Information On This Product,
Go to: www.freescale.com
33887
5
5 Page 
Freescale Semiconductor, Inc.
5.0
0
VPWR
0
Timing Diagrams
50%
td(ON)
90%
50%
td(OFF)
TIME
Figure 2. Output Delay Time
10%
5.0 V
0V
∞Ω
0Ω
VPWR
0
Figure 3. Disable Delay Time
90%
tf
10%
tr
90%
10%
Figure 4. Output Switching Time
6.65 Operation within this region must be
limited to nonrepetitive events
not to exceed 30 seconds
42.05
Thermal Shutdown
150 160 175
TJ, JUNCTION TEMPERATURE (oC)
Figure 5. Active Current Limiting Versus Temperature (Typical)
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
For More Information On This Product,
Go to: www.freescale.com
33887
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet PC33887VW.PDF ] | |
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