STK681-332-E Datasheet, PDF (6/14 Pages) Sanyo Semicon Device – Thick-Film Hybrid IC Forward/Reverse Motor Driver

Sample Application Circuit
STK681-332-E
STK681-332-E
FAULT
VDD (5V)
IN1
IN2
ENBALE
(DC or PWM)
C2
10μF/50V
13
15
16
17
18
R1
Vref
19
R2
C3
0.1μF
14
S.GND
9
7
10
OUT1
8
12
N.C
11
N.C
OUT2
6
5
N.C
4
3
2
1
Rs
VCC=24V
Motor
CCW
CW
C1
47μF to /50V
GND
Motor Drive Conditions (H: High-level input; L: Low-Level Input)
Stop
Forward (CW)
Reverse (CCW)
IN1
IN2
ENABLE
Remarks
H
L
L
Turns the power supply OFF.
L
H
L
ENABLE must be set Low when VDD is rising
or falling.
H
H
L
H
L
H
No input signal is needed that turns off the
upper- and lower-side drive devices when
L
H
H
switching the rotational direction.
Brake
L
L
L or H
GND side MOSFET ON
H
H
H
VCC side MOSFET ON
* Output control is enabled by applying an external PWM signal to the ENABLE pin.
The product can run at a minimum external PWM pulse width of 1μs. In the case when the high pulse width is less
than 16μs, however, the IC may fail to detect a short-circuit condition when an output short-circuit occurs.
If VDD is turned off in the condition with the ENABLE pin set to high during motor rotation or PWM operation, the
FAULT signal is output when VDD is falling, indicating error condition. For this reason, ENABLE must be set to low
when VDD is rising or falling.
When both IN1 and IN2 are set low, the MOSFET on the VCC side is driven. To minimize the loss when stopped, set
IN1 = IN2 = High and ENABLE = Low to turn off the gate signal to the VCC side MOSFETs.
No. A1591-6/14