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PDF BD68720EFV Data sheet ( Hoja de datos )
| Número de pieza | BD68720EFV | |
| Descripción | High-reliability Withstand Voltage Stepping Motor Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
36VHigh-performance,
High-reliability Withstand Voltage
Stepping Motor Driver
BD68720EFV
●General Description
BD68720EFV 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 2.0 A.
PARA-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.
● Key Specifications
■ Range of power supply voltage
19～28 [V]
■ Rated output current (continuous)
2.0 [A]
■ Rated output current (peak value)
2.5 [A]
■ Range of operating temperature
-25～+85 [℃]
■ Output ON resistance (total of
0.65 [Ω] (Typ.)
upper and lower resistors)
●Package
W(Typ.) x D(Typ.)x H(Max.)
HTSSOP-B28
9.70mm x 6.40mm x 1.00mm
● Features
■ Rated output current（DC）2.0A
■ Low ON resistance DMOS output
■ PARA-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
● Applications
■ 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
● Typical Application circuit
PHASE1 15
PHASE2 17
I01 16
I11 18
I02 19
I12 20
VREF 13
CR 10
MTH 12
9 GND
14 PS
7 VCC1
OUT1A
5
2
OUT1B
3
RNF1
4 RNF1S
22 VCC2
24 OUT2A
27 OUT2B
26
RNF2
25 RNF2S
GND
1
Figure.1 Application circuit
○ 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
1/20
TSZ02201-0P2P0B701210-1-2
10.Jun.2016 Rev.001
1 page  
BD68720EFV
●Electrical Characteristics (Unless otherwise specified Ta=25℃, VCC1,2=24V)
Specification
Item Symbol
Minimum Standard Maximum
Unit
[Whole]
Condition
Circuit current at standby
ICCST
Circuit current
ICC
[Control input] (PHASE1, PHASE2)
-
-
0.8 2.0 mA PS=L
2.0 5.0 mA PS=H, VREF=3V
H-level input voltage
VIN1H
L-level input voltage
VIN1L
Input hysteresis voltage
VIN1HYS
H-level input current
IIN1H
L-level input current
IIN1L
[Control input] (PS, I01, I11, I02, I12)
2.8
-
-
35
-10
-
-
0.85
50
0
-V
0.6 V
-V
100 µA VIN1=5V
- µA VIN1=0V
H-level input voltage
VIN2H
2.0
L-level input voltage
VIN2L
-
H-level input current
IIN2H
35
L-level input current
IIN2L
-10
[Output (OUT1A, OUT1B, OUT2A, OUT2B)]
Output ON resistance
Output leak current
[Current control]
RON
ILEAK
-
-
- -V
- 0.8 V
50 100 µA VIN2=5V
0 - µA VIN2=0V
0.65
-
0.85
10
Ω IOUT =±1.0A (total of upper and
lower resistors)
µA
RNFXS input current
RNFX input current
VREF input current
VREF input voltage range
MTH input current
MTH input voltage range
Minimum ON time
(Blank time)
Comparator threshold
IRNFS
IRNF
IVREF
VVREF
IMTH
VMTH
tONMIN
VCTH
-2.0
-80
-2.0
0
-2.0
0
0.3
0.57
-0.1
-40
-0.1
-
-0.1
-
0.7
0.60
-
-
-
3.0
-
3.5
1.5
0.63
µA RNFxS=0V
µA RNFx=0V
µA VREF=0V
V
µA MTH=0V
V
µs C=1000pF, R=39kΩ
V VREF=3V
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/20
TSZ02201-0P2P0B701210-1-2
10.Jun.2016 Rev.001
5 Page 
BD68720EFV
●PARALLEL-IN drive mode
It is possible to drive stepping motor with FULL STEP, HALF STEP, and QUARTER STEP by inputting the following motor
control signals using PARALLEL-IN drive mode.
Examples of control sequence and torque vector
FULL STEP
Controlled by 2 logic signals of PHASE1 & PHASE2
①②③④
PHASE1
PHASE2
I01
I11
I02
I12
IOUT(CH1)
100%
67%
33%
-33%
-67%
-100%
IOUT(CH2)
100%
67%
33%
-33%
-67%
-100%
100%
67%
33%
OUT2B
OUT1A
41
32
OUT1B
OUT2A
HALF STEP A
Controlled by 4 logic signals of PHASE1,PHASE2, I01(I11), and I02(I12)
①②③④⑤⑥⑦⑧
PHASE1
PHASE2
I01
I11
I02
I12
IOUT(CH1)
100%
67%
33%
-33%
-67%
-100%
IOUT(CH2)
100%
67%
33%
-33%
-67%
-100%
100%
67%
33%
OUT2B
OUT1A
1
82
73
64
5
OUT1B
OUT2A
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/20
TSZ02201-0P2P0B701210-1-2
10.Jun.2016 Rev.001
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet BD68720EFV.PDF ] | |
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