36V Stepping Motor Driver
BD63620AEFV
●General Description
BD63620AEFV is a bipolar low-consumption driver that
driven by PWM current. Rated power supply voltage of
the device is 36 V, and rated output current is 2.0A.
CLK-IN driving mode is adopted for input interface, and
excitation mode is corresponding to FULL STEP mode,
HALF STEP mode (2 types) and QUARTER STEP
mode via a built-in DAC. In terms of current decay, the
FAST DECAY/SLOW DECAY ratio may be set without
any limitation, and all available modes may be
controlled in the most appropriate way. In addition, the
power supply may be driven by one single system,
which simplifies the design.
● Features
■
Rated output current（DC）2.0A
■
Low ON resistance DMOS output
■
CLK-IN drive mode
■
PWM constant current (other oscillation)
Built-in spike noise cancel function (external noise
filter is unnecessary)
■
Full-, half (two kinds)-, quarter-step functionality
■
Freely timing excitation mode switch
■
Current decay mode switch
（linearly
variable FAST/SLOW DECAY ratio）
■
Normal rotation & reverse rotation switching
function
■
Power save function
■
Built-in logic input pull-down resistor
■
Power-on reset function
■
Thermal shutdown circuit (TSD)
■
Over-current protection circuit（OCP）
■
Under voltage lock out circuit (UVLO)
■
Over voltage lock out circuit (OVLO)
Ghost Supply Prevention (protects against
malfunction when power supply is disconnected)
■
Microminiature, ultra-thin and high heat-radiation
(exposed metal type) package
● Application
■
PPC, multi-function printer, laser beam printer, and
ink-jet printer
■
Monitoring camera and WEB camera
■
Sewing machine
■
Photo printer, FAX, scanner and mini printer
■
Toy and robot
● Major Characteristics
■
Range of power supply voltage
19½28 [V]
■
Rated output current (peak value)
2.0 [A]
■
Range of operating temperature
-25½+85 [℃]
■
Output ON resistance (total of upper 0.95 [Ω] (Typ.)
and lower resistors)
●Package
W(Typ.) x D(Typ.)x H(Max.)
HTSSOP-B24
7.80mm x 7.60mm x 1.00mm
●
Basic application circuit
18
GND
CLK
12
CW_CCW
14
MODE0
15
MODE1
16
ENABLE
17
11
PS
VREF
9
5
VCC1
4
2
3
OUT1A
OUT1B
RNF1
20
VCC2
OUT2A
OUT2B
RNF2
CR
7
22
24
23
MTH
8
TEST
13
1
GND
Figure 1. BD63620AEFV application circuit diagram
○Product
structure：silicon monolithic integrated circuit
○
It is not the radiation-proof design for this product.
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11.Mar.2014 Rev.001
BD63620AEFV
●
Terminals ConFigureuration Diagram
GND
OUT1B
RNF1
OUT1A
VCC1
N.C.
CR
MTH
VREF
1
2
3
4
5
6
7
8
9
24
23
22
21
20
19
18
17
16
15
14
13
Figure 2. Terminals
Configuration Diagram
OUT2B
RNF2
OUT2A
N.C.
VREF
9
CLK
12
CW_CCW
14
MODE0
15
MODE1
16
ENABLE
17
TSD
OVLO
Translator
RESET
11
PS
● Block Diagram
OCP
UVLO
18
GND
VCC2
N.C.
＋
－
2bit DAC
5
VCC1
＋
4
2
3
OUT1A
OUT1B
RNF1
RNF1S
－
GND
＋
Blank time
PWM control
CR
7
OSC
Mix decay
control
Predriver
ENABLE
MODE1
MODE0
MTH
8
Control logic
RNF2S
－
20
22
24
23
VCC2
OUT2A
OUT2B
RNF2
N.C. 10
PS
11
CW_CCW
TEST
TEST
13
Regulator
CLK 12
1
GND
Figure 3. BD63620AEFV Block Diagram
● Descriptions on Terminals
NO.
1
2
3
4
5
6
7
8
9
10
11
12
Designation
GND
OUT1B
RNF1
OUT1A
VCC1
N.C.
CR
MTH
VREF
N.C.
PS
CLK
Function
Ground terminal
H bridge output terminal
Connection terminal of resistor for
output current detection
H bridge output terminal
Power supply terminal
Non connection
Connection terminal of CR for
setting chopping frequency
Current
decay
mode
setting
terminal
Output
current
terminal
Non connection
Power save terminal
Clock input terminal for advancing
the
electrical angle
value
setting
NO.
13
14
15
16
17
18
19
20
21
22
23
24
Designation
TEST
CW_CCW
MODE0
MODE1
ENABLE
GND
N.C.
VCC2
N.C.
OUT2A
RNF2
OUT2B
Function
Terminal for testing
(used by connecting with GND)
Motor rotating
terminal
Motor excitation
terminal
Motor excitation
terminal
Grounding terminal
Non connection
Power supply terminal
Non connection
H bridge output terminal
Connection terminal of resistor for
output current detection
H bridge output terminal
direction
mode
mode
setting
setting
setting
Terminal for enabling output
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TSZ02201-0P2P0B700670-1-2
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BD63620AEFV
● Absolute Maximum Rated Values (Ta=25℃)
Item
Supply voltage
Symbol
V
CC1,2
Rated Value
-0.2½+36.0
1.10
※
Power dissipation
Pd
4.00
※
Input voltage for control pin
RNF maximum voltage
Maximum output current (DC)
Operating temperature range
Storage temperature range
V
IN
V
RNF
I
OUT
T
opr
T
stg
2
1
Unit
V
W
W
V
V
-0.2½+5.5
0.7
2.0
※
3
A/Phase
℃
℃
-25½+85
-55½+150
※1
70mm×70mm×1.6mm glass epoxy board. Derating in done at 8.8mW/℃ for operating above Ta=25℃.
※2
4-layer recommended board. Derating in done at 32.0mW/℃ for operating above Ta=25℃.
※3
Do not, however exceed Pd, ASO and Tjmax=150℃.
●Recommended operating range (Ta= -25½+85℃)
Item
Supply voltage
Maximum Output current (DC)
*4
Not exceeding Pd，ASO or Tj=150℃
Symbol
V
CC1,2
I
OUT
Rated Value
19½28
1.4
※
4
Unit
V
A/ Phase
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TSZ02201-0P2P0B700670-1-2
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BD63620AEFV
●Electrical Characteristics (Unless otherwise specified Ta=25℃, V
CC1,2
=24V)
Specification
Item
Symbol
Minimum Standard Maximum
[Whole]
Circuit current at standby
Circuit current
[Control input] (CLK)
H-level input voltage
L-level input voltage
Input hysteresis voltage
H-level input current
L-level input current
V
IN1H
V
IN1L
V
IN1HYS
I
IN1H
I
IN1L
2.8
-
-
35
-10
-
-
0.85
50
0
-
0.6
-
100
-
V
V
V
µA
µA
V
IN1
=5V
V
IN1
=0V
I
CCST
I
CC
-
-
0.4
1.3
1.5
4.0
mA
mA
PS=L
PS=H, VREF=3V
Unit
Condition
[Control input] (CW_CCW, MODE0, MODE1, ENABLE, PS)
H-level input voltage
L-level input voltage
H-level input current
L-level input current
V
IN2H
V
IN2L
I
IN2H
I
IN2L
2.0
-
35
-10
-
-
50
0
-
0.8
100
-
V
V
µA
µA
V
IN2
=5V
V
IN2
=0V
[Output (OUT1A, OUT1B, OUT2A, OUT2B)]
Output ON resistance
Output leak current
[Current control]
RNFx input current
VREF input current
VREF input voltage range
MTH input current
MTH input voltage range
Minimum ON time
(Blank time)
Comparator threshold
I
RNF
I
VREF
V
VREF
I
MTH
V
MTH
t
ONMIN
V
CTH
-80
-2.0
0
-2.0
0
0.3
0.57
-40
-0.1
-
-0.1
-
0.9
0.60
-
-
3.0
-
3.5
1.5
0.63
µA
µA
V
µA
V
µs
V
C=1000pF, R=39kΩ
VREF=3V
MTH=0V
RNFx=0V
VREF=0V
R
ON
I
LEAK
-
-
0.95
-
1.3
10
Ω
µA
I
OUT
=±1.5A
(Sum of upper and lower)
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TSZ02201-0P2P0B700670-1-2
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BD63620AEFV
●Function explanation
○CLK／Clock input terminal for advancing the electrical angle
CLK is reflected at rising edge. The Electrical angle advances by one for each CLK input.
Motor’s misstep will occur if noise is picked up at the CLK terminal, so please design the pattern in such a way that there is
no noise plunging.
○MODE0,MODE1／Motor Excitation Mode Setting Terminal
Set the motor excitation mode
MODE0
MODE1
Excitation Mode
L
L
FULL STEP
H
L
HALF STEP A
L
H
HALF STEP B
H
H
QUARTER STEP
Please refer to the P.12, 13 for the timing chart & motor torque vector of various excitation modes.
Unrelated to CLK, change in setting is forcibly reflected (refer to P.15).
○CW_CCW Terminal／Motor rotating direction setting
Set the motor’s rotating direction. Change in setting is reflected at the CLK rising edge immediately after the change in
setting (refer to P.14)
CW_CCW
Rotating direction
L
H
Clockwise (CH2’s current is outputted with a phase lag of 90°in regard to CH1’s current)
Counter Clockwise(CH2’s current is outputted with a phase lead of 90°in regard to CH1’s
current)
○ENABLE Terminal／Output enable terminal
Turn off forcibly all the output transistors (motor output is open).
When ENABLE=L, input to CLK is blocked, and phase advance operation of internal translator circuit is stopped.
However, during excitation modes (MODE0,MODE1) switch within the interval of ENABLE=L, as ENABLE=L→H is reset,
the new mode upon switch will be applied for excitation (See P.15).
ENABLE
Motor Output
L
H
OPEN (electrical angle maintained)
ACTIVE
○PS／Power save terminal
PS can make circuit standby state and make motor output OPEN. In standby state, translator circuit is reset (initialized) and
electrical angle is initialized.
Please be careful because there is a delay of 40μs(max.) before it is returned from standby state to normal state and the
motor output becomes ACTIVE (refer to P.11).
PS
Status
L
Standby state(RESET)
H
ACTIVE
The electrical angle (initial electrical angle) of each excitation mode immediately after RESET is as follows
(refer to P.12, 13).
Initial Electrical Angle
Excitation Mode
FULL STEP
HALFSTEP A
HALFSTEP B
QUARTER
STEP
45°
45°
45°
45°
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© 2014 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0P2P0B700670-1-2
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