BD63940EFV-E Datasheet, PDF (3/9 Pages) Rohm – the ultra simple type that provides the minimum function for driving stepping motor and various protection circuits.

BD63940EFV, BD63960EFV
Technical Note
●Terminal function
1) BD63940EFV/BD63960EFV
Pin
No.
Pin name
Function
Pin
No.
1
PGND Ground terminal
13
2
IN2B
Logic input terminal
14
3
VREF2 Output current value setting terminal
15
4
CR2
Connection terminal of CR for setting
PWM frequency
16
5
NC
Non connection
17
Terminal for testing
6
TEST
(used by connecting with GND)
18
7
GND
Ground terminal
19
8
PS
Power save terminal
20
9
CR1
Connection terminal of CR for setting
PWM frequency
21
10
VREF1 Output current value setting terminal
22
11
IN1B
Logic input terminal
23
12
NC
Non connection
24
Pin name
Function
IN1A
PGND
VCC1
Logic input terminal
Ground terminal
Power supply terminal
OUT1A H bridge output terminal
RNF1
Connection terminal of resistor for output
current detection
OUT1B H bridge output terminal
OUT2B
RNF2
H bridge output terminal
Connection terminal of resistor for output
current detection
OUT2A H bridge output terminal
VCC2
NC
IN2A
Power supply terminal
Non connection
Logic input terminal
●Block diagram･Application circuit diagram･Input output equivalent circuit diagram
Set the PWM frequency.
Setting range is
C:470pF～4700pF
R:10kΩ～100kΩ
39kΩ 1000pF
IN1A 13
IN1B 11
CR1 ₉
ONE
SHOT
39kΩ
VREF1 10
1000pF
IN2A 24
IN2B 2
CR2 ₄
Current
Limit
Comp.
ONE
SHOT
Set the PWM frequency.
Setting range is
C:470pF～4700pF
R:10kΩ～100kΩ
VREF2 3
PGND ₁
Current
Limit
Comp.
PGND ₁₄
GND ₇
LOGIC
Predriver
OCP
LOGIC
Predriver
OCP
Regulator RESET
TSD
OVLO
UVLO
15 ^VCC1
16 ^OUT1A
18
OUT1B
17
RNF1
0.3Ω
22 ^VCC2
21 ^OUT2A
19
OUT2B
20 _RNF2
0.3Ω
6 ^TEST
8 PS
Resistor for current detection.
Setting range is
0.2Ω～0.5Ω(BD63940EFV)
0.2Ω～0.4Ω(BD63960EFV)
Be sure to short VCC1 & VCC2.
0.1uF
100uF
Bypass capacitor.
Setting range is
100uF～470uF(electrolytic)
0.01uF～0.1uF(multilayer ceramic etc.)
Resistor for current detection.
Setting range is
0.2Ω～0.5Ω(BD63940EFV)
0.2Ω～0.4Ω(BD63960EFV)
Terminal for testing.
Please connect to GND.
Fig.1 Block diagram & Application circuit diagram
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2012.02 - Rev.A