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Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MPC17550 Rev 1.0, 03/2004
Advance Information 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 RDS(ON) of 1.2 max @ 25C. 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 RDS(ON) 0.7 (Typ), 1.2 (Max) @ 25C * * * * * * * 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
Simplified Application Diagram
17550
QUAD H-BRIDGE MICROMOTOR DRIVER WITH DC/DC BOOST CONVERTER
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EV (Pb-FREE) SUFFIX CASE 1522-01 36-LEAD VMFP
ORDERING INFORMATION
Device MPC17550EV/EL Temperature Range (TA) -10C to 60C Package 36 VMFP
17550 Simplified Application Diagram
VM 17550 VM OE PSB
VDD VDD LX VG
MCU
INAF INAR INBF INBR INCF INCR INDF INDR
HBAF HBAR HBBF HBBR HBCF HBCR HBDF HBDR GND
This document contains certain information on a new product. Specifications and information herein are subject to change without notice. (c) Motorola, Inc. 2004
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GND
LX
VG
VDD
VDD PSB
VDD
DC/DC Converter
VDD
AGND
VG
HBA
VMA HBAF HBAR PGND
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INAF INAR
INBF INBR
HBB
VMB HBBF HBBR VDD
OE
Control Logic
Gate Driver and Level Shifter
PGND
HBC
VMC HBCF
INCF INCR
HBCR PGND
HBD
VMD INDF INDR HBDF HBDR PGND
Figure 1. 17550 Simplified Internal Block Diagram
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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
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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 29 31 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 HBCR HBCF Formal Name Analog Ground No Connect Power Standby Output Enable Motor Drive Power Supply A HBA Forward Output HBA Reverse Output Motor Drive Power Supply B HBB Reverse Output Power Ground HBB Forward Output Input Control HBA Reverse Input Control HBA Forward Input Control HBB Forward Input Control HBB Reverse Input Control HBD Reverse Input Control HBD Forward Input Control HBC Forward Input Control HBC Reverse Motor Drive Power Supply D HBD Forward Output HBD Reverse Output Motor Drive Power Supply C HBC Reverse Output HCB Forward Output 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). Power supply voltage connection for Motor "A" (top of HBA). Forward output of H-Bridge A. Reverse output of H-Bridge A. Power supply voltage connection for Motor "B" (top of HBB). Reverse output of H-Bridge B. Power ground connection. Forward output of H-Bridge B. Control signal input for H-Bridge A reverse. Control signal input for H-Bridge A forward. Control signal input for H-Bridge B 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. Control signal input for H-Bridge C forward. Control signal input for H-Bridge C reverse. Power supply voltage connection for Motor "D" (top of HBD). Forward output of H-Bridge D. Reverse output of H-Bridge D. Power supply voltage connection for Motor "C" (top of HBC). Reverse Output of H-Bridge C. Forward Output of H-Bridge C.
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TERMINAL FUNCTION DESCRIPTION (continued)
Terminal 33 34 35 36 Terminal Name GND LX VDD VG Formal Name Ground DC/DC Converter Switching Transistor Output Logic Supply Gate-Driver Circuit Power Supply Definition Control circuit ground terminal for DC/DC circuit ground. Open-drain output of the internal DC/DC converter circuit. Control circuit power supply terminal. Input terminal for the gate-drive voltage.
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MAXIMUM RATINGS All voltages are with respect to ground unless otherwise noted. Exceeding the ratings may cause a malfunction or permanent damage to the device.
Rating Motor Supply Voltage Gate-Driver Circuit Power Supply Voltage Logic Supply Voltage Signal Input Voltage (Note 1) Driver Output Current Continuous (Note 2) Peak (Note 3) IO IOPK VESD1 VESD2 TSTG TA TJ RJA PD TSOLDER 0.7 2.0 V 2000 100 -65 to 150 -10 to 60 -10 to 150 TBD 1500 260 C C C C/W mW C Symbol VM VG VDD VIN Value -0.5 to 9.0 VDD -0.5 to 14 -0.5 to 6.0 -0.5 to VDD +0.5 Unit V V V V A
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ESD Voltage Human Body Model (Note 4) Machine Model (Note 5) Storage Temperature Range Operating Ambient Temperature Operating Junction Temperature Thermal Resistance (Note 6) Power Dissipation (Note 7) Soldering Temperature (Note 8) Notes 1. VIN is the voltage level applied to any input terminal. 2. IO is measured as the load current flowing through the H-bridge. 3. 4. 5. 6. 7. 8. TA = 25C, pulse width < 10 ms at intervals > 0.2 seconds. ESD1 testing is performed in accordance with the Human Body Model (CZAP = 100 pF, RZAP = 1500 ). ESD2 testing is performed in accordance with the Machine Model (CZAP = 200 pF, RZAP = 0 ). Mounted on 37 x 50 Cu area (1.6 mm FR-4 PCB). Maximum at TA = 25C.
Soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may cause malfunction or permanent damage to the device.
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STATIC ELECTRICAL CHARACTERISTICS Characteristics noted under conditions TA = 25C, VDD = 3.0 V, VM = 2.5 V, GND = 0 V, fIN = 176 kHz unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25C under nominal conditions unless otherwise noted.
Characteristic Symbol Min Typ Max Unit
POWER
Motor Supply Voltage Logic Supply Voltage Standby Power Supply Current (Note 9) Motor Supply Standby Current Logic Supply Standby Current I I VM VDD VMSTBY 1.6 2.5 - - - 2.5 3.0 - - 0.3 5.5 5.5 1.0 1.0 1.0 mA V V A
VDDSTBY IV
DD
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Logic Supply Current Gate Driver Circuit Power Supply Current (Note 10) Standby (PSB = "L") No Signal Operating Input Signal Operating (Note 11) Driver Output ON Resistance (Note 12)
IDDC0 IDDCN IDDC RDS(ON)
- - - -
- 1.0 19 0.7
1.0 3.0 25 1.2
A A mA
GATE DRIVE
Gate Driver Circuit Power Supply Voltage (Note 13) VG 10 11.5 13 V
CONTROL LOGIC
Logic Input Voltage (Note 14) Logic Input (F, R, PSB, OE) High-Level Input Voltage Low-Level Input Voltage High-Level Input Current Low-Level Input Current VIH VIL IIH IIL VDD x 0.7 - - -1.0 - - - - - VDD x 0.3 1.0 - V V A A VIN 0 - VDD V
Notes 9. Applies individually to each H-Bridge. 10. Average inductor current for DC/DC converter (connected between VDD and LX [L = 1.0 mH, C = 2.2 F]). 11. 12. 13. 14. Full drive (input signal to all input terminals). The total H-bridge ON resistance when VG is 11.5 V. When voltage is supplied externally without built-in DC/DC. VIN is the voltage level applied to any input.
17550 6
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DYNAMIC ELECTRICAL CHARACTERISTICS Characteristics noted under conditions TA = 25C, VDD = 3.0 V, VM = 2.5 V, GND = 0 V, fIN = 176 kHz unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25C under nominal conditions unless otherwise noted.
Characteristic Symbol Min Typ Max Unit
INPUT
Pulse Input Frequency (Note 15) Internal Oscillator Frequency
f IN f OSC
- -
- 100
200 200
kHz kHz
OUTPUT
Gate Driver Circuit Power Supply Wake-Up Time Propagation Delay Time
t VGON t PLH t PHL
-
10
20
ms s
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Turn-ON Time Turn-OFF Time Notes 15. fIN is the signal frequency applied to an input terminal (F, R).
- -
0.2 0.2
1.0 1.0
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Timing Diagrams
VIH F, R,
2.1 V PSB VIL
10 V FO, RO VG 50% 50%
tVGON
tPLH
tPHL
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Figure 2. DC/DC Converter Output Waveform
Figure 3. H-Bridge Output Waveform
Table 1. Truth Table
PSB, OE PSB H H H H H L H = High. L = Low. Z = High impedance. X = Don't care. * = A, B, C, or D.
OE
INA/INB/INC/IND IN*F L L H H X X IN*R L H L H X X
HBA/HBB/HBC/HBC HB*F L L H Z Z Z HB*R L H L Z Z Z
L L L L H X
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SYSTEM/APPLICATION INFORMATION
INTRODUCTION
The 17550 is a monolithic quad H-Bridge ideal for portable electronic applications containing multiple bipolar step motors and/or brush DC motors. The device features an on-board DC/ DC converter to provide gate-drive voltages, as well as levelshifting circuitry. The control logic translates the input signals to the gate-driver circuitry while providing cross-conduction suppression. The 17550 has four operating modes: Forward, Reverse, Brake, and Tri-Stated (High Impedance). The MOSFETs comprising the output bridge have a total source+sink RDS(ON) 1.2 . The 17550 can simultaneously drive four brush DC motors or two bipolar step motors. The drivers are designed to be PWM'ed at frequencies up to 200 kHz.
FUNCTIONAL TERMINAL DESCRIPTION
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VDD
The VDD terminal carries the logic supply voltage and current into the logic sections of the IC. VDD has an undervoltage threshold. If the supply voltage drops below the undervoltage threshold, the output power stage switches to a tri-state condition. When the supply voltage returns to a level that is above the threshold, the power stage automatically resumes normal operation according to the established condition of the input terminals.
VM
The VM terminals carry the main supply voltage and current into the power sections of the 17550. This supply then becomes controlled and/or modulated by the 17550 as it delivers the power to the loads attached between the H-Bridge output terminals. All VM terminals must be connected together on the printed circuit board.
LX
The LX terminal is the open-drain output of the internal DC/ DC converter circuit. It is the junction for the external inductor and the anode of the external Schottky diode.
INAF, INAR, INBF, INBR, INCF, INCR, INDF, INDR
These logic input terminals control each H-Bridge output; e.g., IN*F logic HIGH = HB*F HIGH; likewise, IN*R logic HIGH = HB*R HIGH. However, if both "F" and "R" inputs are taken HIGH, the associated bridge's outputs are both tri-stated (refer to Table 1, Truth Table, page 8).
VG
The VG terminal is the input terminal for the gate-drive voltage. It can be supplied from the built-in DC/DC converter or from an external source.
OE
OE terminal is a LOW = TRUE enable input. When OE = HIGH, all H-Bridge outputs are tri-stated (high
Ground Terminals
All ground terminals must be tied together on the PCB.
impedance) regardless of logic inputs states.
HBAF, HBAR, HBBF, HBBR, HBCF, HBCR, HBDF, HBDR
These terminals provide connection to the outputs of each of the internal H-Bridges (see Figure 1, 17550 Simplified Internal Block Diagram, page 2).
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APPLICATIONS Introduction
The 17550's built-in DC/DC converter must be connected to an external inductor, rectifier, and filter capacitor. This step-up converter generates the gate-drive voltage, VG, required by the internal gate driver circuits. Although there is some latitude in selecting the values for the external component, care must be taken that VG does not exceed 14 V. Additionally, too low an inductance will cause large instantaneous switching currents, which may damage the device. Important Do not use an inductance lower than 330 H. To attain high-efficiency operation, the rectifier should be a Schottky diode, and the filter capacitor should be of the low ESR type. Attention should be paid to proper switch mode power supply PCB layout practice. Some experimentation may be required to determine optimal external component values. The recommended starting values are L = 1.0 mH, C = 2.2 F. The DC/DC converter includes its own internal oscillator and does not require an external clock input.
Typical Application
A typical application schematic is shown in Figure 4.
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VM = 2.5 V
47 F
VDD = 3.0 V
10 F
17550
VM VDD LX OE PSB VG
L = 1.0 mH
2.2 F
INAF INAR
HBAF HBAR
N S
MCU
INBF INBR
HBBF HBBR HBCF HBCR
N S
INCF INCR
HBDF INDF INDR HBDR GND
Figure 4. Typical 17550 Application
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CEMF Snubbing Techniques
Care must be taken to protect the IC from potentially damaging CEMF spikes induced when commutating currents in inductive loads. Typical practice is to provide snubbing of voltage transients by placing a capacitor or zener at the motor supply voltage terminal (VM) (see Figure 5).
5.0 V 5.0 V 175XX VDD VM C1L C1H C2L C2H OUT 5.0 V 5.0 V 175XX VDD VM C1L C1H C2L C2H CRES OUT
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CRES
OUT
OUT
GND
GND
Figure 5. CEMF Snubbing Techniques
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PACKAGE DIMENSIONS
EV (Pb-FREE) SUFFIX 36-LEAD VMFP PLASTIC PACKAGE CASE 1522-01 ISSUE O
1.200.10
36
1.90 1.70
B
5
19
1.350.10
NPJ IA
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(JPN)/CAVITY #(A1) BOTTOM SIDE
5.40 5.20
3 4
1.200.10
1
18
4X R0.400.10
1.300.10 12.70 12.50
2X
VIEW Y 3 4 A
VIEW K
121 R0.150.10 121
36X
0.10 C
1.90 1.70
0.25
GUAGE PLANE
SEATING PLANE
141
2X
R0.150.10
0.27 36X 0.37
0.13 M CAB
C
0.20 0.00
141 0- 8 0.600.20 0.690.20
4 0.37 0.27
0.13 M
R R BASE METAL
VIEW K
VIEW ROTATED 90 CW
CAB
NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETERS. 2. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 3. DIMENSIONS DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.5 MM PER END. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.5 MM PER SIDE. 4. DIMENSIONS ARE DETERMINED AT THE OUTMOST EXTREMES OF THE PLASTIC BODY EXCLUSIVE OF MOLD FLASH, TIE BAR BURRS, GATE BURRS AND INTERLEAD FLASH, BUT INCLUDING ANY MISMATCH BETWEEN THE TOP AND BOTTOM OF THE PLASTIC BODY. 5. TERMINAL NUMBERS ARE SHOWN FOR REFERNCE ONLY.
0.325
34X
0.27 (0.20) 0.15
0.65 VIEW Y
PLATING
(0.30)
SECTION R-R
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NOTES
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NOTES
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NOTES
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Information in this document is provided solely to enable system and software implementers to use Motorola products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. MOTOROLA and the Stylized M Logo are registered in the US Patent and Trademark Office. All other product or service names are the property of their respective owners. (c) Motorola, Inc. 2004 HOW TO REACH US: USA/EUROPE/LOCATIONS NOT LISTED: Motorola Literature Distribution P.O. Box 5405, Denver, Colorado 80217 1-800-521-6274 or 480-768-2130 JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center 3-20-1 Minami-Azabu. Minato-ku, Tokyo 106-8573, Japan 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong 852-26668334 HOME PAGE: http://motorola.com/semiconductors
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