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BD6422EFV-E2

P1-P3P4-P6P7-P9
1/8
www.rohm.com
2012.02 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
Stepping Motor Driver series
High Voltage Series
Stepping Motor Drivers
BD6422EFV (PARALLEL-IN type)
BD6425, BD6423EFV (CLK-IN type)
●Description
These products are a low power consumption PWM constant current-drive driver of bipolar stepping motor with power
supply’s rated voltage of 45V and rated output current of 1.0A, 1.5A.
●Feature
1) Power supply: one system drive (rated voltage of 45V)
2) Rated output current: 1.0A, 1.5A
3) Low ON resistance DMOS output
4) CLK-IN drive mode (BD6425/6423EFV)
5) Parallel IN drive mode (BD6422EFV)
6) PWM constant current control (other oscillation)
7) Built-in spike noise blanking function (external noise filter is unnecessary)
8) FULL STEP & HALF STEP (two kinds), applicable to QUARTER STEP
9) Current decay mode switching function (4 kinds of FAST/SLOW DECAY ratio)
10) Normal rotation & reverse rotation switching function (BD6425/6423EFV)
11) Power save function
12) Built-in logic input pull-down resistor
13) Power-on reset function(BD6425/6423EFV)
14) Thermal shutdown circuit (TSD)
15) Over current protection circuit (OCP)
16) Under voltage lock out circuit (UVLO)
17) Malfunction prevention at the time of no applied power supply (Ghost Supply Prevention)
18) Electrostatic discharge: 8kV (HBM specification)
19) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP package
●Application
serial dot impact printer､sewing machine etc.
●Absolute maximum ratings(Ta=25℃)
Item Symbol BD6425EFV BD6423/6422EFV Unit
Supply voltage V
CC1,2
-0.2～+45.0 -0.2～+45.0 V
Power dissipation Pd
1.45
※
1
1.1
※
3
W
4.70
※
2
4.0
※
4
W
Input voltage for control pin V
IN
-0.2～+5.5 -0.2～+5.5 V
RNF maximum voltage V
RNF
0.7 0.7 V
Maximum output current I
OUT
1.5
※
5
1.0
※
5
A/phase
Operating temperature range T
opr
-25～+85 -25～+85 ℃
Storage temperature range T
stg
-55～+150 -55～+150 ℃
Junction temperature T
jmax
+150 +150 ℃
※1 70mm×70mm×1.6mm glass epoxy board. Derating in done at 11.6mW/℃ for operating above Ta=25℃.
※2 4-layer recommended board. Derating in done at 37.6mW/℃ for operating above Ta=25℃.
※3 70mm×70mm×1.6mm glass epoxy board. Derating in done at 8.8mW/℃ for operating above Ta=25℃.
※4 4-layer recommended board. Derating in done at 32.0mW/℃ for operating above Ta=25℃.
※5 Do not, however exceed Pd, ASO and Tjmax=150℃.
No.12009EAT06
Technical Note
2/8
BD6422EFV, BD6423EFV, BD6425EFV
www.rohm.com
2012.02 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
●Operating conditions( (Ta= -25～+85℃)
Item Symbol BD6425EFV BD6423/6422EFV Unit
Supply voltage V
CC1,2
19~42 V
Maximum Output current (DC) I
OUT
1.2
※
6
0.7
※
6
A/phase
※6 Do not however exceed Pd, ASO.
●Electrical characteristics (Unless otherwise specified Ta=25℃､V
CC1,2
=37V)
Item Symbol
Limit
Unit Condition
Min. Typ. Max.
Whole
Circuit current at standby
I
CCST
- 1.0 2.5 mA PS=L
Circuit current
I
CC
- 2.0 5.0 mA PS=H, VREF=3V
Control input
H level input voltage
V
INH
2.0 - - V
L level input voltage
V
INL
- - 0.8 V
H level input current
I
INH
35 50 100 μAV
IN
=5V
L level input current
I
INL
-10 0 - μAV
IN
=0V
Output (OUT1A, OUT1B, OUT2A, OUT2B)
Output ON resistance(BD6425EFV)
R
ON
- 1.10 1.43 Ω I
OUT
=1.0A,Sum of upper and lower
Output ON resistance(BD6423/6422EFV)
R
ON
- 2.00 2.60 Ω I
OUT
=0.5A,Sum of upper and lower
Output leak current
I
LEAK
- - 10 μA
Current control
RNFXS input current (BD6425EFV)
I
RNFS
-2.0 -0.1 - μA RNFXS=0V
RNFX input current
I
RNF
-40 -20 - μA RNFX=0V
VREF input current
I
VREF
-2.0 -0.1 - μAVREF=0V
VREF input voltage range
V
REF
0 - 3.0 V
Minimum on time (Blank time)
t
ONMIN
0.5 1.5 3.0 μs C=470pF, R=82kΩ
BD6425/6423EFV
Comparator threshold
V
CTH
0.57 0.60 0.63 V VREF=3V
BD6422EFV
Comparator threshold 100% V
CTH100
0.57 0.60 0.63 V VREF=3V, (I0X,I1X)=(L,L)
Comparator threshold 67% V
CTH67
0.38 0.40 0.42 V VREF=3V, (I0X,I1X)=(H,L)
Comparator threshold 33% V
CTH33
0.18 0.20 0.22 V VREF=3V, (I0X,I1X)=(L,H)
Technical Note
3/8
BD6422EFV, BD6423EFV, BD6425EFV
www.rohm.com
2012.02 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
●Terminal function and Application circuit diagram
1) BD6425EFV
Pin
No.
Pin name Function
Pin
No.
Pin name Function
1 GND Ground terminal 15 CLK
Clock input terminal for advancing the
electrical angle.
2 OUT1B H bridge output terminal 16 CW_CCW Motor rotating direction setting terminal
3 RNF1
Connection terminal of resistor for output
current detection
17 TEST
Terminal for testing
(used by connecting with GND)
4 RNF1S Input terminal of current limit comparator 18 MODE0 Motor excitation mode setting terminal
5 OUT1A H bridge output terminal 19 MODE1 Motor excitation mode setting terminal
6 NC Non connection 20 ENABLE Power supply terminal
7 VCC1 Power supply terminal 21 NC Non connection
8 NC Non connection 22 VCC2 Power supply terminal
9 GND Ground terminal 23 NC Non connection
10 CR
Connection terminal of CR for setting
chopping frequency
24 OUT2A H bridge output terminal
11 DEC1 Current decay mode setting terminal 25 RNF2S Input terminal of current limit comparator
12 DEC2 Current decay mode setting terminal 26 RNF2
Connection terminal of resistor for output
current detection
13 VREF Output current value setting terminal 27 OUT2B H bridge output terminal
14 PS Power save terminal 28 NC Non connection
Fig.1 Block diagram & Application circuit diagram of BD6425EFV
0.3Ω
Predriver
7
VCC1
Blank time
PWM control
Translator
2bit DAC
TSD
UVLO
Regulator
RESET
9
GND
10
CR
12 DEC2
14
PS
15 CLK
18 MODE0
19
MODE1
11 DEC1
16
CW_CCW
20
ENABLE
VREF 13
2
OUT1B
5
OUT1A
3
RNF1
22
VCC2
24
OUT2A
1
GND
27
OUT2B
26
RNF2
17
TEST
Control logic
Mix decay
control
＋
－
＋
－
＋
－
RNF1
RNF2
OCP
OSC
0.3Ω
Terminal for testing.
Please connect to GND.
82kΩ
470pF
Set the chopping
frequency.
Setting range is
C:330pF～1500pF
R:15kΩ～200kΩ
Bypass capacitor.
Setting range is
100uF～470uF(electrolytic)
0.01uF～0.1uF(multilayer ceramic etc.)
Be sure to short VCC1 & VCC2.
Resistor for current. detecting.
Setting range is
0.2Ω～0.4Ω.
100uF
Logic input terminal.
Set the output currenet.
Input by resistor divison.
Logic input terminal.
for setting current decay mode
Power save terminal.
4
RNF1S
25
RNF1S
0.1uF
Resistor for current. detecting.
Setting range is
0.2Ω～0.4Ω.
P1-P3P4-P6P7-P9

BD6422EFV-E2

Mfr. #:
Buy BD6422EFV-E2
Manufacturer:
Description:
Motor / Motion / Ignition Controllers & Drivers STEP MOTOR DRIVER 19-42V 1.0A
Lifecycle:
New from this manufacturer.
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