LV11961HA-AH 查看數據表（PDF） - ON Semiconductor
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LV11961HA-AH Datasheet PDF : 18 Pages
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Application Circuit Example
LV11961HA
M
Power
Sup pl y
*1
*2
CM
*1
PGND
(Frame)
1 OUT2
R6
R7
*7
R1
R5
R4
*6
*5
R2
C2
C3
PWM
signal Input
MN1
R3
Rotational
*10
signal output
Lock detection
*9
signal output
2 VCC
3 RMI
4 VTH
5 CPWM
6 FG
7 RD
Fig.8
PGND
*1
(Frame)
OUT1 14
*1
SGND 13
SFS 12
REG 11
*4
IN2 10
*8
C4
*3
C1
HB 9
H
IN1 8
C5
*4
*1 < Wiring of VCC and GND >
PGND (Frame) is connected to power
MOSFETs and SGND is to internal circuits.
Wiring of those should be separated each
other to stabilize SGND by cutting out the
influence of the switching noise of power
FETs. In the event that external parts for IC
are connected to GND, it should be done
with SGND.
In addition, PGND (Frame) pins are
effective for heat radiation. Therefore, the
larger the wiring area of PGND is, the
greater the effect is. Considering heat
radiation along with the switching noise, the
wiring of PGND should be widened as much
as possible.
Similarly to PGND, the wiring of VCC should
be widened and shortened for suppressing the
noise.
*2 < Capacitor for power stabilization >
The capacitor for power stabilization should
be enough value to ensure a stable
operation. Of course, this capacitor must not
be removed.
Under the condition that the value of coil
inductance is larger or the value of coil
resistance is smaller, the current ripple
grows further. Under that condition, it should
use the capacitor with larger value to absorb
this current ripple. If cannot by capacitor, it
must use power-clamp with zener diode.
This capacitor should be set as close to VCC
pin and PGND pin as possible.
*3 < Capacitor for stabilization of REG output
voltage >
REG output voltage is the regulated voltage
as power supplier to inner control circuits.
Therefore, it is necessary to stabilize by
using a capacitor with enough value for
preventing inner control circuits from false
operation.
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