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BD63843EFV-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
Micro step 36V
Stepping Motor Drivers
BD63843EFV, BD63847EFV
●Description
BD63843EFV / BD63847EFV are stepping motor drivers of 1/16 micro step(sixteenth step) drive. As for its basic function, it
is a low power consumption bipolar PWM constant current-drive driver with power supply rated voltage of 36V and rated
output current (DC) of 1.0A, 2.0A. The input interface is CLK-IN type.
There are step modes of Full step & Half step, Eighth step, Sixteenth step mode by internal DAC (D-A converter), and for
current decay mode, the ratio of FAST DECAY & SLOW DECAY can be freely set, so the optimum control conditions for
every motor can be realized. In addition, being able to drive with one system of power supply makes contribution to the set
design’s getting easy.
●Feature
1) Single power supply input (rated voltage of 36V)
2) Rated output current:(DC) 1.0A, 2.0A
3) Low ON resistance DMOS output
4) CLK-IN drive mode
5) PWM constant current control (other oscillation)
6) Built-in spike noise cancel function (external noise filter is unnecessary)
7) Full step, Half step, Eighth step, Sixteenth step drive
8) Timing free for changing step modes
9) Current decay mode switching function (linearly variable FAST/SLOW DECAY ratio)
10) Normal rotation & reverse rotation switching function
11) Power save function
12) Built-in logic input pull-down resistor
13) Power-on reset function
14) Thermal shutdown circuit (TSD)
15) Over current protection circuit (OCP)
16) Under voltage lock out circuit (UVLO)
17) Over voltage lock out circuit (OVLO)
18) Ghost Supply Prevention (protects against malfunction when power supply is disconnected)
19) Electrostatic discharge: 8kV (HBM specification)
20) Adjacent pins short protection
21) Inverted mounting protection
22) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP-B28 package
23) Pin-compatible line-up (In addition, pin-compatible to BD6387□EFV series)
●Application
PPC, multi-function printer, laser beam printer, ink jet printer, monitoring camera, WEB camera, sewing machine, photo
printer, FAX, scanner, mini printer, toy, and robot etc.
No.12009EAT08
Technical Note
2/8
BD63843EFV, BD63847EFV
www.rohm.com
2012.02 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
●Absolute maximum ratings (Ta=25°C)
Item Symbol BD63847EFV BD63843EFV Unit
Supply voltage V
CC1,2
-0.3~+36.0 V
Power dissipation Pd
1.45
※
1
W
4.70
※
2
W
Input voltage for control pin V
IN
-0.3~+7.0 V
RNF voltage V
RNF
0.7 V
Output current I
OUT
2.0
※
3
1.0
※
3
A/phase
Output current (peak)
※
4
I
OUTPEAK
2.5
※
3
1.5
※
3
A/phase
Operating temperature range T
opr
-25~+85 °C
Storage temperature range T
stg
-55~+150 °C
Junction temperature T
jmax
+150 °C
※1 70mm×70mm×1.6mm glass epoxy board. Derating in done at 11.6mW/°C for operating above Ta=25°C.
※2 4-layer recommended board. Derating in done at 37.6mW/°C for operating above Ta=25°C.
※3 Do not, however exceed Pd, ASO and Tjmax=150°C.
※4 Pulse width tw≦1ms, duty20%.
●Operating conditions (Ta= -25~+85°C)
※5 Do not, however exceed Pd, ASO.
●Electrical characteristics (Unless otherwise specified Ta=25°C, V
CC1,2
=24V)
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
- 2.5 5.0 mA PS=H, VREF=3V
Control input (CLK, CW_CCW, MODE0, MODE1, ENABLE, PS)
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 µA V
IN
=5V
L level input current I
INL
-10 0 - µA V
IN
=0V
Output (OUT1A, OUT1B, OUT2A, OUT2B)
Output ON resistance (BD63847EFV) R
ON
- 0.85 1.10 Ω
I
OUT
=1.5A,
Sum of upper and lower
Output ON resistance (BD63843EFV) R
ON
- 1.90 2.47 Ω
I
OUT
=0.5A,
Sum of upper and lower
Output leak current I
LEAK
- - 10 µA
Current control
RNFXS input current 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 - µA VREF=0V
VREF input voltage range V
REF
0 - 3.0 V
MTH input current I
MTH
-2.0 -0.1 - µA MTH=0V
MTH input voltage range V
MTH
0 - 3.5 V
Minimum on time (Blank time) t
ONMIN
0.3 0.8 1.5 µs C=1000pF, R=39kΩ
Comparator threshold 1 V
CTH1
0.570 0.600 0.630 V VREF=3V, 100%
Comparator threshold 2 V
CTH2
0.403 0.424 0.445 V VREF=3V, 70.71%
Comparator threshold 3 V
CTH3
0.196 0.230 0.264 V VREF=3V, 38.27%
Item Symbol BD63847EFV BD63843EFV Unit
Supply voltage V
CC1,2
19~28 V
Input voltage for control pin V
IN
0~5.5 V
Output current I
OUT
1.7
※
5
0.7
※
5
A/相
Technical Note
3/8
BD63843EFV, BD63847EFV
www.rohm.com
2012.02 - Rev.
A
© 2012 ROHM Co., Ltd. All rights reserved.
●Terminal function and Application circuit diagram
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
out
p
ut current detection
17 TEST
Terminal for testing
(
Used b
y
connectin
g
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
Output enable 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
cho
pp
in
g
fre
q
uenc
y
24 OUT2A
H bridge output terminal
11 NC
Non connection
25 RNF2S
Input terminal of current limit
comparator
12 MTH
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
0.2Ω
0.2Ω
Terminal for testing.
Connect to GND.
Resistor for current. detecting.
Setting range is
0.1Ω~0.3Ω.
Refer to P.6 for detail.
39kΩ 1000pF
Set the chopping frequency.
Setting range is
C:470pF~1500pF
R:10kΩ~200kΩ
Refer to P.7, 8 for detail.
Bypass capacitor.
Setting range is
100uF~470uF(electrolytic)
0.01uF~0.1uF(multilayer ceramic etc.)
Refer to P.6 for detail.
Be sure to short VCC1 & VCC2.
Resistor for current. detecting.
Setting range is
0.1Ω~0.3Ω.
Refer to P.6 for detail.
Predriver
7
VCC1
Blank time
PWM control
Translator
4bit DAC
TSD
UVLO
Regulator
RESET
9
GND
10
C
R
12 MTH
14
PS
15
CL
18
MODE0
19
MODE1
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
＋
－
＋
－
＋
－
OCP
OSC
RNF1S
4
RNF2S
25
OVLO
RNF1S
RNF2S
100µF
0.1µF
Set the output currenet.
Input by resistor divison.
Refer to P.6 for detail.
Set the current decay mode.
①SLOW DECAY
⇒Connect to GND.
②MIX DECAY
⇒Input by resistor divison.
Refer to P.7, 9 for detail.
Logic input terminal.
Refer to P.5 for detail.
Power save terminal
Refer to P.5 for detail.
P1-P3P4-P6P7-P9

BD63843EFV-E2

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Description:
Motor / Motion / Ignition Controllers & Drivers 36V 1A Stepping Motor Driver
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