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Motor Drivers for Printers
System Driver
for Ink Jet Printers
BD64550EFV
No.10016EAT03
Description
This is 1-chip system motor driver integrating 2-channel H-bridge driver, step-down switching regulator with built-in power
DMOS, series regulator and reset output.
Features
1) Low-on resistance output H-bridge driver (2-channel)
2) Constant-current chopping drive H-bridge driver
3) Switching regulator with built-in P-channel power DMOS FET
4) Soft start function: 23.6 ms (Typ.)
5) Reset release timer: 80 ms (Typ.)
6) 16 bit serial interface
7) Logic input interface (serial/parallel changeable)
8) Ultra thin type high heat dissipation HTSSOP-B40 package
9) Overcurrent protection in H-bridge driver block
10) Input voltage low voltage protection in H-bridge driver block
11) Overcurrent protection in switching regulator block
12) Output overvoltage protection in switching regulator block
13) Output low voltage protection in switching regulator block
14) Thermal shutdown
Applications
Inkjet printer, photo printer, etc.
Absolute Maximum Ratings (Ta=25)
Parameter
Symbol
Ratings
Unit
VM applied voltage
VM 40
Logic input voltage
VL -0.4 ~ 5.5
RIN applied voltage
VRIN
5.5
RNF voltage
VRNF
0.5
Power dissipation
Pd 1600*
Operating temperature range
Storage temperature range
Junction temperature
TOPR
TSTG
Tjmax
-25 ~ +85
-55 ~ +150
150
Motor driver output current (peak 500 ns)
Iomax (peak)
8.0
Motor driver output current (DC)
Iomax (DC)
2.5**
Switching regulator output current (DC)
Iomax
0.5
Series regulator output current (DC)
Iomax
0.25
* Reduced by 12.8 mW/over 25 , when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm).
** Must not exceed Pd or ASO.
V
V
V
V
mW
A
A
A
A
Operating Conditions
Parameter
Symbol
Limit
Unit
VM operating power supply voltage range
SCLK max. operating frequency
Switching regulator output voltage range
VM
FSCLK
Vswreg
7 ~ 36
20
3~5
V
MHz
V
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BD64550EFV
Electrical Characteristics (Unless otherwise specified,Ta=25,VM=24V)
Parameter
Symbol
Min.
Limit
Typ.
Overall
VM current 1
IVM1
-
-
VM current 2
IVM2
-
-
H-bridge 1
Output on resistance (source side))
RONH1
-
0.6
Output on resistance (sinking side)
RONL1
-
0.4
Output leak current
Built-in diode forward direction voltage
(source side)
ILEAK1
VFH1
0
0.6
-
0.9
Built-in diode forward direction voltage
(sinking side)
VFL1
0.6
0.9
H-bridge 2
Output on resistance (source side)
RONH2
-
0.7
Output on resistance (sinking side)
RONL2
-
0.5
Output leak current
Built-in diode forward direction voltage
(source side)
ILEAK2
VFH2
0
0.6
-
0.9
Built-in diode forward direction voltage
(sinking side)
VFL2
0.6
0.9
Current control
VREF voltage range
VREF
0.8
-
VREF pin outflow current
IREF
-
0
RNF pin outflow current
IRNF
5
15
RNFS pin outflow current
IRNFS
-
0
VREF-RNFS offset voltage
VOFFSET
-15
0
Control logic
High input voltage
VINH
2.0
-
Low input voltage
VINL
0
-
Input current
IIN 21 33
Switching power source
DSEN threshold voltage
VSWBIAS
0.873
0.9
Output on resistance
RSWON
-
0.8
Leak current
ISWLEAK
0
-
DUTY_MAX value
DMAX
-
92
Clock frequency
FSW 130 200
DSEN pin outflow current
IDSEN
-
0
Series power source
Output voltage
VSOUT
1.425
1.5
Leak current
ISLEAK
0
-
RESET pin
Output voltage
VRSTL
0
-
Leak current
IRSTLEAK
0
-
High VM threshold voltage
VMPORH
6.3
6.5
Low VM threshold voltage
VMPORL
5.9
6.1
High motor UVLO voltage
VMMTH
13.5
15
Low motor UVLO voltage
VMMTL
12.5
14
Reset delay time
TPOR
50
80
Technical Note
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Max.
Unit Conditions
8 mA VM=7V
12 mA VM=24V
0.78
0.52
10
1.2
1.2
Io=1A
Io=1A
µA VM=36V
V Io=1A
V Io=1A
0.91
0.65
10
1.2
1.2
Io=1A
Io=1A
µA VM=36V
V Io=1A
V Io=1A
3.5 V
1 µA
30 µA
1 µA
15 mV VREF=2V
5.5 V
0.8 V
45 µA Input voltage=3.3V
0.927
1.04
10
-
270
1
V
At Io=250mA
µA VM=36V
%
kHz
µA
1.575
10
V At Io=70mA
µA
0.2
10
6.7
6.3
16.5
15.5
110
V IDRAIN=1mA
µA
V VM at power on
V VM at power off
V Off motor only
V
ms
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2/16
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BD64550EFV
Reference Data
6
25℃
85℃
4 -25℃
2
8.00
6.00
4.00
2.00
Technical Note
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1.2
0.8
0.4
0
0 8 16 24 32
Supply voltage :VM[V]
Fig.1 VM Current
1.4
1.2
1.0 85
0.8 25
0.6
-25
0.4
0.2
0.0
0
400 800 1200 1600
Supply current :Io[mA]
2000
Fig.4 OUT1 High Output Voltage
(source side)
1.4
1.2
1.0
85
0.8
25
0.6
0.4 -25
0.2
0.0
0
400 800 1200 1600 2000
Supply current :Io[mA]
Fig.7 OUT2 Low Output Voltage
(sinking side)
2.0
1.8
1.6
1.4
1.2
0.00
-25
0 25 50
Temperature [℃]
75
Fig.2 Internal Reference Clock
(VM=24V)
0.9
0.8
0.7
85
0.6
0.5
25
0.4
0.3 -25
0.2
0.1
0.0
0
400 800 1200 1600 2000
Supply current :Io[mA]
Fig.5 OUT1 Low Output Voltage
(sinking side)
500
400
85
300
25
200
-25
100
0
0 100 200 300 400 500
Supply current :Io[mA]
Fig.8 Switching Regulator High Output
Voltage
4
-252585
3
2
1
1.0
0
50 100 150 200 250
Supply current :[mA]
Fig.10 Series Regulator Load Regulation
(VM=24V, Ta=25)
0
0 2 46 8
Supply v oltage :VM[V]
Fig.11 Reset Output
(Pull up to switching regulator at 10k)
0.0
-25
0 25 50
Temperature ()
75
Fig.3 Temperature dependence of
Internal Standard Voltage (VM=24V)
1.6
1.4
1.2
85
1.0
25
0.8
0.6 -25
0.4
0.2
0.0
0
400 800 1200 1600 2000
Supply current :Io[mA]
Fig.6 OUT2 High Output Voltage
(source side)
100
VM=7V
80
VM=24V
60
40
20
0
0 100 200 300 400 500
Output current :[mA]
Fig.9 Switching Regulator Efficiency
(Ta=25)
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BD64550EFV
Technical Note
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Block Diagram, Application Circuit Diagram, and Pin Function
VM2
32
33
VM2
8 VM1
9
VM1
Be sure to use VM1,VM2.VM3 and VM4 by short-circuit.
OUT2P 39
34
OUT2M
0.2
(0.04~0.35)
RNF2 37
38
RNF2
36
RNF2S
VREF2 19
Same as RNF1
SELECT 22
DC2P 24
SCLK(DC1P) 27
DC2E 23
STROBE(DC1E) 25
SDATA 26
AGND
29
From
VDCDCOUT
16
RIN
ROUT
14
1µF
(0.1µF~2.2µF)
1/10
Pre
driver
Pre
driver
CONTROL LOGIC
1/10
Selector
Serial
Control
POWER
MONITOR
RESET
OSC
UVLO
TSD
BG
REG
BG BG
DRIVER
7 OUT1P
2
OUT1M
3 RNF1
4
5
RNF1
RNF1S
20 VREF1
0.2
(0.04~0.35)
31 VM3
300µF
(220µF~470µF)
28 RESET
40 PGND
21 DGND
VM4
10
SWOUT
220µH VDCDCOUT
2.7k
12
0.2Ω(0.04Ω~0.35Ω)
Io1=(VREF1/10)(1/RNF1S)
See P.9.
N.C.
OUT1M
RNF1
RNF1
RNF1S
N.C.
OUT1P
VM1
VM1
VM4
N.C.
SWOUT
N.C.
ROUT
N.C.
RIN
N.C.
DSEN
VREF2
VREF1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
100µF
18
DSEN
4700pF
1k
The figure on the left-hand side shows
optimum recommended values.
See P.10 for setting.
40 PGND
39 OUT2P
38 RNF2
37 RNF2
36 RNF2S
35 N.C.
34 OUT2M
33 VM2
32 VM2
31 VM3
30 N.C.
29 AGND
28 RESET
27 SCLK
26 SDATA
25 STROBE
24 DC2P
23 DC2E
22 SELECT
21 DGND
Fig.12 Block Diagram and Application Circuit Diagram
Fig.13 Pin Assignment Diagram
No.
Pin
name
Function
1 NC Non Connection
No.
Pin
name
21 DGND Digital GND
Function
2 OUT1M H-bridge output pin 1M
22 SELECT Input pin select pin
3 RNF1 Output current detection pin 1
23 DC2E H-bridge 2 side enable input pin
4 RNF1 Output current detection pin 1
24 DC2P H-bridge 2 side phase pin
5 RNF1S Output current detection input pin
6 NC Non Connection
25
STROBE
Serial port strobe input pin /
H-bridge 1 side enable pin
7 OUT1P H-bridge output pin 1P
26 SDATA Serial port data input pin
8 VM1 Motor power supply pin
9 VM1 Motor power supply pin
27
SCLK
Serial port clock input pin /
H-bridge 1 side phase input pin
10 VM4 Switching regulator power supply pin
28 RESET Reset signal output pin
11 NC Non Connection
29 AGND ANALOG GND
12 SWOUT Switching regulator output pin
30 NC Non Connection
13 NC Non Connection
31 VM3 Power supply pin
14 ROUT Series regulator output pin
32 VM2 Motor power supply pin
15 NC Non Connection
33 VM2 Motor power supply pin
16 RIN Series regulator power supply pin
34 OUT2M H-bridge output pin 2M
17 NC Non Connection
35 NC Non Connection
18 DSEN Switching regulator voltage sense pin
36 RNF2S Output current detection input pin
19 VREF2 Reference voltage input pin
37 RNF2 Output current detection pin 2
20 VREF1 Reference voltage input pin
38 RNF2 Output current detection pin 2
39 OUT2P H-bridge output pin 2P
40 PGND POWER GND
* Precaution regarding VM pin
If you use VM1, VM2, VM3 and VM4 not by short-circuit, they may be destroyed. Be sure to use them by short-circuit.
And be sure to set up a bypass capacitor (220µF to 470µF) closer to VM3 pin as much as possible.
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BD64550EFV
Technical Note
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Pin selection function
Either serial control or external PWM control can be selected for motor control type with SELECT pin (pin 22).
SELECT
Output state
L Serial input mode
H External PWM control mode
STROBE/DC1E(25pin)
SDATA(26pin)
SCLK/DC1P(27pin)
DC2P(24pin)
DC2E(23pin)
SELECT(22pin)
ENA PHA
Internal shift register
SEL
SEL
Serial
SEL
Serial
SEL
Serial
Fig.14 Serial Input Block Diagram
The input/output logic at SELECT = H is as follows.
DC1E/DC2E
L
H
Output state
Open
ACTIVE
DC1P/DC2P
L
H
OUTP
SINK
SOURCE
OUTM
SOURCE
SINK
Control
Logic
OUTPUT
Procedure of DC motor drive by external PWM control
1) Serial setting
Set the serial by SELECT pin = L. (WORD_S and WORD_D setting)
WORD_S (see P.7) is a drive parameter for setting OFF_TIME, BLANK TIME etc.
WORD_D (see P.7) is for drive setting to set drive mode of each H-bridge.
When setting WORD_D (see P.7), make sure that ENABLE signal (ENABLE_1ENABLE_2) of serial bit is L.
If ENABLE signal is H, the motor may operate.
Input of DC2P pin can be either H or L.
2) External PWM drive mode switch
Set external PWM drive mode by SELECT pin = H.
Switch by DC1E (STROBE)/CD2E pin = L when switching SELECT pin.
3) Drive
PHASE, ENABLE pin input signal (DC1E/DC1P/DC2E/DC2P) drives in external PWM mode.
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2010.06 - Rev.A