Motor Driver. BD63621MUV Datasheet

BD63621MUV Driver. Datasheet pdf. Equivalent

BD63621MUV Datasheet
Recommendation BD63621MUV Datasheet
Part BD63621MUV
Description Stepping Motor Driver
Feature BD63621MUV; Datasheet 36V Stepping Motor Driver BD63621MUV General Description BD63621MUV is a bipolar low-co.
Manufacture ROHM
Datasheet
Download BD63621MUV Datasheet




ROHM BD63621MUV
Datasheet
36V
Stepping Motor Driver
BD63621MUV
General Description
BD63621MUV 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.
CLK-IN driving mode is adopted for input interface, and
excitation mode is corresponding to FULL STEP mode ,
HALF STEP mode ( 2 kinds), 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 currentDC2.0A
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 (2 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 circuitOCP
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
Key Specifications
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)
8 to 28 V
2.0 A
2.5 A
-25 to +85 °C
0.49 Ω (Typ)
Package
VQFN028V5050
W(Typ) x D(Typ)x H(Max)
5.00mm x 5.00mm x 1.00mm
VQFN028V5050
Typical Application Circuit
GND
1
GND
2
GND
6
CLK 5
MODE1 7
MODE0 8
CW_CCW 9
ENABLE 10
TEST 11
VREF 28
CR 26
SELECT 4
MTH 27
25 GND
3 PS
24 VCC1
23 OUT1A
19
OUT1B
20
RNF1
21 RNF1S
12 VCC2
13 OUT2A
17 OUT2B
16
RNF2
15 RNF2S
18 GND
Figure 1. Application circuit diagram
Product structuresilicon monolithic integrated circuit
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© 2017 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
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ROHM BD63621MUV
BD63621MUV
Pin Configuration
[TOP VIEW]
21 20 19 18 17 16 15
N.C. 22
OUT1A 23
VCC1 24
GND 25
CR 26
MTH 27
VREF 28
14 N.C.
13 OUT2A
12 VCC2
11 TEST
10 ENABLE
9 CW_CCW
8 MODE0
1234567
Figure 2. Pin Configuration Diagram
Block Diagram
GND 1
GND 2
GND 6
CLK 5
MODE1 7
MODE0 8
CW_CCW 9
ENABLE 10
TEST 11
VREF 28
Translator
DAC
RNF1S
RNF2S
Blank time
PWM control
CR 26
OSC
SELECT 41
MTH 217
Mix decay
control
TSD
OVLO
RESET
OCP
UVLO
25 GND
3 PS
Regulator
24 VCC1
OUT1A
23
19 OUT1B
20 RNF1
21 RNF1S
12 VCC2
13 OUT2A
17 OUT2B
16 RNF2
15 RNF2S
18 GND
Figure 3. Block Diagram
Pin Description
Pin No. Pin name
1
GND
Function
Ground terminal
Pin No.
15
2
GND
Ground terminal
16
3
PS
Power save terminal
17
4
SELECT Decay mode setting terminal
18
5
CLK
Clock input terminal for advancing the
electrical angle
19
6
GND
Ground terminal
20
7
MODE1 Motor excitation mode setting terminal
21
8
MODE0 Motor excitation mode setting terminal
22
9
CW_CCW Motor rotating direction setting terminal
23
10
ENABLE Output enable terminal
24
11
TEST
Terminal for testing
(Used by connecting with GND)
25
12
VCC2
Power supply terminal
26
13
OUT2A H bridge output terminal
27
14
N.C.
No Connection
28
Pin name
RNF2S
RNF2
OUT2B
Function
Input terminal of current limit
comparator
Connection terminal of resistor for
output current detection
H bridge output terminal
GND
Ground terminal
OUT1B
RNF1
RNF1S
N.C.
H bridge output terminal
Connection terminal of resistor for
output current detection
Input terminal of current limit
comparator
No Connection
OUT1A H bridge output terminal
VCC1
Power supply terminal
GND
CR
MTH
Ground terminal
Connection terminal of CR for setting
chopping frequency
Current decay mode setting terminal
VREF
Output current value setting terminal
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© 2017 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
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TSZ02201-0P2P0B701290-1-2
21.Dec.2020 Rev.002



ROHM BD63621MUV
BD63621MUV
Description of operation
○ SELECTInput Mode Switching Terminal
This is the terminal to set the input mode.
SELECT
DECAY Mode
L
DECAY Mode 1
H
DECAY Mode 2
CLKClock 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,MODE1Motor 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.13-14 for the timing chart & motor torque vector of various excitation modes.
Unrelated to CLK, change in setting is forcibly reflected (refer to P.16).
CW_CCWMotor 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.15)
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)
ENABLEOutput 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 (refer to P.16).
ENABLE
Motor Output
L
OPEN (electrical angle maintained)
H
ACTIVE
PSPower 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.12).
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.13-14).
Excitation Mode
Initial Electrical Angle
FULL STEP
45°
HALF STEP A
45°
HALF STEP B
45°
QUARTER STEP
45°
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© 2017 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
3/24
TSZ02201-0P2P0B701290-1-2
21.Dec.2020 Rev.002





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