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PDF BD63725BEFV Data sheet ( Hoja de datos )
| Número de pieza | BD63725BEFV | |
| Descripción | High-reliability Withstand Voltage Stepping Motor Driver | |
| Fabricantes | ROHM Semiconductor | |
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36VHigh-performance,
High-reliability Withstand Voltage
Stepping Motor Driver
BD63725BEFV
●General Description
BD63725BEFV 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 2.5 A.
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.
● Major Characteristics
■ Range of power supply voltage
■ Rated output current (continuous)
■ Rated output current (peak value)
■ Range of operating temperature
■ Output ON resistance (total of
upper and lower resistors)
19～28 [V]
2.5 [A]
3.0 [A]
-25～+85 [℃]
0.35 [Ω] (Typ.)
●Package
HTSSOP-B28
W(Typ.) x D(Typ.)x H(Max.)
9.70mm x 6.40mm x 1.00mm
● Features
■ Rated output current（DC）2.5A
■ 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)
■ Adjacent pins short protection
■ 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
● Basic application circuit
CLK 15
CW_CCW 16
MODE0 18
MODE1 19
ENABLE 20
VREF 13
CR 10
MTH 12
TEST 17
9 GND
14 PS
7 VCC1
5 OUT1A
2
OUT1B
3
RNF1
4 RNF1S
22 VCC2
24 OUT2A
27 OUT2B
26
RNF2
25 RNF2S
GND
1
Figure.1 BD63725BEFV application circuit diagram
○ Product structure：silicon monolithic integrated circuit ○It is not the radiation-proof design for this product.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
1/23
TSZ02201-0P2P0B701440-1-2
24.May.2016 Rev.001
1 page  
BD63725BEFV
Datasheet
●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
LL
FULL STEP
HL
HALF STEP A
LH
HALF STEP B
HH
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 Clockwise (CH2’s current is outputted with a phase lag of 90°in regard to CH1’s current)
H
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 OPEN (electrical angle maintained)
H 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).
Excitation Mode Initial Electrical Angle
FULL STEP
HALFSTEP A
HALFSTEP B
QUARTER
STEP
45°
45°
45°
45°
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/23
TSZ02201-0P2P0B701440-1-2
24.May.2016 Rev.001
5 Page 
BD63725BEFV
Datasheet
●Translator circuit
This series builds in translator circuit and can drive stepping motor in CLK-IN mode.
The operation of the translator circuit in CLK-IN drive mode is described as below.
○Reset operation
The translator circuit is initialized by power ON Reset function and PS terminal.
・Initializing operation when power supply is turned on
①If power supply is turned on at PS=L (Please use this sequence as a general rule)
When power supply is turned on, the power ON reset function operates in IC and initialized, but as long as it is PS=L,
the motor output is the OPEN state. After power supply is turned on, because of the changing of PS=L⇒H, the motor
output becomes the ACTIVE state, and the excitation is started at the initial electrical angle.
But at the time of PS=L⇒H, it returns from the standby state to the normal state and there is a delay of 40μs(max.)
until the motor output has become the ACTIVE state.
Reset is released
ACTIVE
PS
CLK
OUT1A
Delay
①
②
OUT1B
Motor output OPEN
Motor output ON
②If power supply is turned on at PS=H
When power supply is turned on, the power ON function in IC operates, and initialized before the motor output
becomes the ACTIVE state, and the excitation is started at the initial electrical angle.
・Initializing operation during motor operating
Please input the reset signal to PS terminal when the translator circuit is initialized during motor operating. (Refer to
P.14) But at the time of PS=L⇒H, it returns from the standby state to the normal state and there is a delay of 40μs
(max.) until the motor output has become the ACTIVE state, so please be careful.
○Control input timing
Please input as shown below because the translator circuit operates at the rising edge of CLK signal. If you disobey this
timing and input, then there is the possibility that the translator circuit does not operate as expected. In addition, at the time
of PS=L⇒H, it returns from the standby state to the normal state and there is a delay of 40μs (max.) until the motor output
has become the ACTIVE state, so within this delay interval there is no phase advance operation even if CLK is inputted.
A
PS
BC
CLK
MODE0
MODE1
CW_CCW
D
FG
E
F
G
A:PS minimum input pulse width･･････20μs
B:PS rising edge～CLK rising edge input possible maximum delay time･･････40μs
C:CLK minimum period･･････4μs
D:CLK minimum input H pulse width･･････2μs
E:CLK minimum input L pulse width･･････2μs
F:MODE0,MODE1,CW_CCW set-up time･･････1μs
G:MODE0,MODE1,CW_CCW hold time･･････1μs
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/23
TSZ02201-0P2P0B701440-1-2
24.May.2016 Rev.001
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet BD63725BEFV.PDF ] | |
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