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)： 10/20頁(yè)
文件大?。?/td> 556K
代理商： MC33883
33883
10
Go to: www.freescale.com
DEVICE DESCRIPTION
Driver Characteristics
Figure 3
represents the external circuit of the high-side gate
driver. In the schematic, HSS represents the switch that is used
to charge the external high-side MOSFET through the
GATE_HS terminal. LSS represents the switch that is used to
discharge the external high-side MOSFET through the
GATE_HS terminal. The same schematic can be applied to the
external low-side MOSFET driver simply by replacing terminal
CP_OUT with terminal LR_OUT, terminal GATE_HS with
terminal GATE_LS, and terminal SRC_HS with GND.
Figure 3. High-Side Gate Driver Functional Schematic
The different voltages and current of the high-side gate driver
are illustrated in
Figure 4
. The output driver sources a peak
current of up to 1.0 A for 200 ns to turn on the gate. After
200 ns, 100 mA is continuously provided to maintain the gate
charged. The output driver sinks a high current to turn off the
gate. This current can be up to 1.0 A peak for a 100 nF load.
Note
GATE_HS is loaded with a 100 nF capacitor in the
chronograms. A smaller load will give lower peak and DC charge or
discharge currents.
Figure 4. High-Side Gate Driver Chronograms
HSS
CP_OUT
I
GATE_HS
GATE_HS1
I
charge HSS
I
discharge LSS
LSS
SRC_HS1
180
k
18V
HSSpulse_IN
LSS_IN
HSSDC_IN
IN_HS1
1.0 A Peak
1.0 A Peak
100 mA Typical
0
0
0
0
0
0
1.0 A Peak
100 mA Typical
-1.0 A Peak
IN_HS1
HSSpulse_IN
HSS DC_IN
LSS_IN
I
discharge LSS
I
GATE_HS
I
charge HSS
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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