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Freescale Semiconductor
Advance Information
Document Number: MPC17550
Rev. 2.0, 7/2006
Quad H-Bridge Micromotor
Driver with DC/DC Boost
Converter
The 17550 is a monolithic quad H-Bridge power IC ideal for portable
electronic applications containing tiny bipolar stepper motors and/or
brush DC-motors powered by two-to-four cell NiCd/NiMH batteries.
The 17550 operates from 2.5 V to 5.5 V, with independent control of
each H-Bridge via parallel 3.0 V or 5.0 V logic-compatible I/O. The
device features an on-board DC / DC boost converter that allows motor
operation all the way down to 1.6 V (the boost converter supplies the
gate-drive voltage for each of the four independent H-bridge output
stages). Each output bridge has its own gate-drive and logic circuitry
with built-in shoot-through current protection.
The 17550 has four operating modes: Forward, Reverse, Brake,
and Tri-Stated (High Impedance). The 17550 has a low total R
DS(ON)
of 1.2
Ω
max @ 25°C. In addition, it can be set into a very low current-
drain standby mode.
The H-Bridge outputs can be independently PWM’ed at up to
200 kHz for speed/torque and current control. The 17550 can
efficiently drive many types of micromotors owing to its low output
resistance and high output slew rates.
Features
• Low Total R
DS(ON)
0.7
Ω
(Typ), 1.2
Ω
(Max) @ 25°C
• Output Current 700 mA (Continuous per Output)
• Shoot-Through Current Protection Circuit
• PWM Control Input Frequency up to 200 kHz
• Built-In DC / DC Boost Converter
• Low Power Consumption Standby Mode
• Undervoltage Detection and Shutdown Circuit
• Pb-Free Packaging Designated by Suffix Code EV
17550
H-BRIDGE MOTOR DRIVER
EV SUFFIX (Pb-FREE)
98ASA10591D
36-TERMINAL VMFP
ORDERING INFORMATION
Device
MPC17550EV/EL
Temperature
Range (T
A
)
-10°C to 60°C
Package
36 VMFP
V
M
17550
VM
OE
PSB
V
DD
VDD
LX
VG
MCU
INAF
INAR
INBF
INBR
INCF
INCR
INDF
INDR
HBAF
HBAR
HBBF
HBBR
HBCF
HBCR
HBDF
HBDR
GND
Figure 1. 17550 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2006. All rights reserved.
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
GND
LX
VG
VDD
V
DD
PSB
V
DD
AGND
DC/DC
Converter
V
DD
VG
HBA
VMA
HBAF
INAF
INAR
HBAR
PGND
INBF
INBR
HBB
VMB
HBBF
HBBR
V
DD
OE
Control
Logic
Gate
Driver
and
Level
Shifter
PGND
HBC
VMC
HBCF
INCF
INCR
HBCR
PGND
HBD
VMD
INDF
INDR
HBDF
HBDR
PGND
Figure 2. 17550 Simplified Internal Block Diagram
17550
2
Analog Integrated Circuit Device Data
Freescale Semiconductor
TERMINAL CONNECTIONS
TERMINAL CONNECTIONS
AGND
NC
PSB
OE
VMA
HBAF
PGND
HBAR
VMA
VMB
HBBR
PGND
HBBF
VMB
INAR
INAF
INBF
INBR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
VG
VDD
LX
GND
VMC
HBCF
PGND
HBCR
VMC
VMD
HBDR
PGND
HBDF
VMD
INCR
INCF
INDF
INDR
Figure 3. 17550 Terminal Connections
Table 1. Terminal Function Description
Terminal
1
2
3
4
5, 9
6
8
10, 14
11
7, 12, 25, 30
13
15
16
17
18
19
20
21
22
23, 27
24
26
28, 32
Terminal
Name
AGND
NC
PSB
OE
VMA
HBAF
HBAR
VMB
HBBR
PGND
HBBF
INAR
INAF
INBF
INBR
INDR
INDF
INCF
INCR
VMD
HBDF
HBDR
VMC
Formal Name
Analog Ground
No Connect
Power Standby
Output Enable
Definition
Analog and logic signal ground reference terminal.
No connection to this terminal.
Power standby mode control terminal.
Logic output Enable control of H-Bridges (Low = True).
Motor Drive Power Supply A Power supply voltage connection for Motor “A” (top of HBA).
HBA Forward Output
HBA Reverse Output
Forward output of H-Bridge A.
Reverse output of H-Bridge A.
Motor Drive Power Supply B Power supply voltage connection for Motor “B” (top of HBB).
HBB Reverse Output
Power Ground
HBB Forward Output
Input Control HBA Reverse
Reverse output of H-Bridge B.
Power ground connection.
Forward output of H-Bridge B.
Control signal input for H-Bridge A reverse.
Input Control HBA Forward Control signal input for H-Bridge A forward.
Input Control HBB Forward Control signal input for H-Bridge B forward.
Input Control HBB Reverse
Input Control HBD Reverse
Input Control HBD Forward
Control signal input for H-Bridge B reverse.
Control signal input for H-Bridge D reverse.
Control signal input for H-Bridge D forward.
Input Control HBC Forward Control signal input for H-Bridge C forward.
Input Control HBC Reverse
Control signal input for H-Bridge C reverse.
Motor Drive Power Supply D Power supply voltage connection for Motor “D” (top of HBD).
HBD Forward Output
HBD Reverse Output
Forward output of H-Bridge D.
Reverse output of H-Bridge D.
Motor Drive Power Supply C Power supply voltage connection for Motor “C” (top of HBC).
17550
Analog Integrated Circuit Device Data
Freescale Semiconductor
3
TERMINAL CONNECTIONS
Table 1. Terminal Function Description (continued)
Terminal
29
31
33
34
35
36
Terminal
Name
HBCR
HBCF
GND
LX
VDD
VG
Formal Name
HBC Reverse Output
HCB Forward Output
Ground
Reverse Output of H-Bridge C.
Forward Output of H-Bridge C.
Control circuit ground terminal for DC/DC circuit ground.
Definition
DC/ DC Converter Switching Open-drain output of the internal DC/ DC converter circuit.
Transistor Output
Logic Supply
Gate-Driver Circuit Power
Supply
Control circuit power supply terminal.
Input terminal for the gate-drive voltage.
17550
4
Analog Integrated Circuit Device Data
Freescale Semiconductor
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