參數(shù)資料
型號(hào): MC33883
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: H-Bridge Gate Driver IC(H橋柵極驅(qū)動(dòng)器)
中文描述: H橋門驅(qū)動(dòng)器集成電路(高橋柵極驅(qū)動(dòng)器)
文件頁(yè)數(shù): 15/20頁(yè)
文件大?。?/td> 556K
代理商: MC33883
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33883
15
In the case of rapidly changing V
CC
voltages, the large dV/dt
may result in perturbations of the high-side driver, thereby
forcing the driver into an OFF state. The addition of capacitors
C3 and C4, as shown in
Figure 12
, reduces the dV/dt of the
source line, consequently reducing driver perturbation. Typical
values for R3/R4 and C3/C4 are 10
and 10 nF, respectively.
dV/dt at V
CC2
When the external high-side MOSFET is on, in case of rapid
negative change of V
CC2
the voltage (V
GATE_HS
- V
SRC_HS
) can
be higher than the specified 18 V. In this case a resistance in
the SRC line is necessary to limit the current to 5.0 mA max. It
will protect the internal zener placed between GATE_HS and
SRC terminals.
Figure 12. Application Schematic with External Protection Circuit
IN_LS2
IN_HS2
IN_LS1
IN_HS1
V
BAT
G_EN
C1
C2
C
CP
C
LR_OUT
470 nF
C
CP_OUT
470 nF
MCU
V
CC2
V
CC
V
BOOST
33883
M1
M2
M3
M4
R1
R2
50
50
50
50
33 nF
DC
Motor
R3
10
10 nF
C3
10 nF
C4
10
R4
IN_LS2
IN_HS2
IN_LS1
IN_HS1
G_EN
C1
C2
V
CC2
V
CC
GND
GATE_LS2
SRC_HS2
GATE_HS2
GATE_LS1
SRC_HS1
GATE_HS1
LR_OUT
CP_OUT
F
Freescale Semiconductor, Inc.
Go to: www.freescale.com
n
.
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