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BD63847EFV 데이터시트 PDF




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부품번호 BD63847EFV 기능
기능 (BD63843EFV / BD63847EFV) Micro step 36V Stepping Motor Drivers
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BD63847EFV 데이터시트, 핀배열, 회로
Stepping Motor Driver series
Micro step 36V
Stepping Motor Drivers
BD63843EFV, BD63847EFV
No.12009EAT08
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
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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 BD6387EFV 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.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
1/8
2012.02 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/




BD63847EFV pdf, 반도체, 판매, 대치품
BD63843EFV, BD63847EFV
Technical Note
Points to notice for terminal description
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 step mode.
MODE0 MODE1
Step mode
LL
Full step
HL
Half step
LH
1/8 step
HH
1/16 step
CW_CCW /Motor rotating direction setting terminal
Set the motor’s rotating direction. Change in setting is reflected at the CLK rising edge immediately after the change in
setting
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/Output enable terminal
Turn off forcibly all the output transistors (motor output is open).
At ENABLE=L, electrical angle or operating mode is maintained even if CLK is inputted.
If step modes are changed during ENABLE=L, new step mode is carried out at ENABLE=L to H
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
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PS State
L Standby state (RESET)
H ACTIVE
The electrical angle (initial electrical angle) of each step mode immediately after RESET is as follows
Step mode
Initial electrical angle
Full step
45°
Half step
45°
1/8 step
45°
1/16 step
45°
Protection Circuits
Thermal Shutdown (TSD)
This IC has a built-in thermal shutdown circuit for thermal protection. When the IC’s chip temperature rises above 175°C
(Typ.), the motor output becomes OPEN. Also, when the temperature returns to under 150°C (Typ.), it automatically returns
to normal operation. However, even when TSD is in operation, if heat is continued to be added externally, heat overdrive
can lead to destruction.
Over Current Protection (OCP)
This IC has a built in over current protection circuit as a provision against destruction when the motor outputs are shorted
each other or VCC-motor output or motor output-GND is shorted. This circuit latches the motor output to OPEN condition
when the regulated threshold current flows for 4µs (Typ.). It returns with power reactivation or a reset of the PS terminal.
The over current protection circuit’s only aim is to prevent the destruction of the IC from irregular situations such as motor
output shorts, and is not meant to be used as protection or security for the set. Therefore, sets should not be designed to
take into account this circuit’s functions. After OCP operating, if irregular situations continues and the return by power
reactivation or a reset of the PS terminal is carried out repeatly, then OCP operates repeatly and the IC may generate heat
or otherwise deteriorate. When the L value of the wiring is great due to the wiring being long, after the over current has
flowed and the output terminal voltage jumps up and the absolute maximum values may be exceeded and as a result, there
is a possibility of destruction. Also, when current which is over the output current rating and under the OCP detection
current flows, the IC can heat up to over Tjmax=150°C and can deteriorate, so current which exceeds the output rating
should not be applied.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
4/8
2012.02 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/

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BD63847EFV 전자부품, 판매, 대치품
BD63843EFV, BD63847EFV
Technical Note
(12) Input terminal of IC
This IC is a monolithic IC, and between each element there is a P+ isolation for element partition and a P substrate.
This P layer and each element’s N layer make up the P-N junction, and various parasitic elements are made up.
For example, when the resistance and transistor are connected to the terminal as shown in figure 3,
When GND(Terminal A) at the resistance and GND(Terminal B) at the transistor (NPN),
the P-N junction operates as a parasitic diode.
Also, when GND(Terminal B) at the transistor (NPN)
The parasitic NPN transistor operates with the N layers of other elements close to the aforementioned
parasitic diode.
Because of the IC’s structure, the creation of parasitic elements is inevitable from the electrical potential relationship. The
operation of parasitic elements causes interference in circuit operation, and can lead to malfunction and destruction.
Therefore, be careful not to use it in a way which causes the parasitic elements to operate, such as by applying voltage
that is lower than the GND (P substrate) to the input terminal.
Pin A
N P+ N
Parasitic element
Resistor
Pin A
P P+ N
P substrate
GND
Pin B
C
Parasitic
element
N P+
Parasitic element
Transistor (NPN)
B
E
NP
P+ N
P substrate
GND
GND
Pin B
C
B
E
Parasitic
element
GND
Other adjacent elements
Fig. 3 Pattern diagram of parasitic element
(13) Ground Wiring Pattern
When using both large current and small signal GND patterns, it is recommended to isolate the two ground patterns,
placing a single ground point at the ground potential of application so that the pattern wiring resistance and voltage
variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change
the GND wiring pattern of any external components, either.
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(14) TEST pin
Be sure to connect TEST pin to GND.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
7/8
2012.02 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/

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부품번호상세설명 및 기능제조사
BD63847EFV

(BD63843EFV / BD63847EFV) Micro step 36V Stepping Motor Drivers

ROHM Semiconductor
ROHM Semiconductor

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