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参数资料
| 型号： | MC33285 |
| 厂商： | 飞思卡尔半导体(中国)有限公司 |
| 英文描述： | Dual High Side TMOS Driver(双高端TMOS驱动器) |
| 中文描述： | 双高边坡的TMOS驱动器（双高端的TMOS驱动器） |
| 文件页数： | 3/5页 |
| 文件大小： | 248K |
| 代理商： | MC33285 |
MC33285
3
MC33285
Turn On Characteristics
The power FETs are turned on by charging their gate capacities with a current flowing out of pin OUT1 and OUT2.
During PWM, the values of table below are guaranteed. They are measured with 8nF on OUT1 and 16nF on OUT2.
- test condition : V
IN
: ramp 0V to 2.5V or 2.5V to 5V.
Figure 1.
Turn-on Behaviour
Table 1 Turn on behaviour
The output voltages at OUT1 and OUT2 are limited by controlling the current sources I
on1
, I
on2
to avoid currrent flowing
through the external or the internal zener diode .
If Vcc + Vth (threshold voltage) is reached , the current sources are turned off.
- threshold V
TH1
for OUT1 output voltage control : 7V < V
TH1
< Vz
- threshold VTH2 for OUT2 output voltage control : 7V < V
TH2
< 15V
Turn off characteristics
The power FETs on OUT1 and OUT2 are turned off by discharging the gate capacity with the constant discharge current
I
OUToff
.
- discharge current I
OUTxoff
: IOUTxoff = 110
μ
A
condition : V
OUT
x > 0.5V ( V
IN
< V
THRxIN
)
Test conditions for switching off the power FETs :
- 1. IN open
- 2. Stages disabled via pin IN
- 3. Stage OUT1 disabled by an over current error
Voltage V
VCC
Minimum V
OUT1,OUT2
after t
on1
= 100
μ
sec
Minimum V
OUT1,OUT2
after t
on2
= 1.0msec
Minimum V
OUT1,OUT2
after t
on3
= 1.5msec
7V < V
VCC
< 10V
10V < V
VCC
< 20V
20V < V
VCC
< 40V
V
VCC
- 0.7V
V
VCC
- 0.7V
V
VCC
- 0.7V
V
VCC
+ 5.95V
V
VCC
+ 9.35V
V
VCC
+ 7V
V
VCC
+ 11V
20ms
V
OUT2
2.5V
5V
IN
V
CCP
THRIN1
THRIN2
IN
V
OUT1
V
OUT2
0V
0V
2.5V
V
OUT1
IN
VOUT1
max
ton1
ton2
ton3
0
2.5V
0V
5V
V
OUT2
IN
VOUT2
max
ton1
ton2
ton3
0
V
VCC
+7V
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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