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参数资料
| 型号： | MIC5011YM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MOSF HI/LOW SIDE 8SOIC |
| 标准包装： | 2,500 |
| 配置： | 高端或低端 |
| 输入类型： | 非反相 |
| 延迟时间： | 25µs |
| 配置数： | 1 |
| 输出数： | 1 |
| 电源电压： | 4.75 V ~ 32 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC5011YMTR MIC5011YMTR-ND |
MIC5011
Micrel, Inc.
Applications Information (Continued)
12V
MIC5011
MIC5011
100k?
47μF
+
1N4148
10k ?
1 V+ C1 8
2 Input Com 7
3 Source C2 6
4 Gnd Gate 5
10μF
+
12V
IRFZ44
R
330k?
330k?
1N4148
2 Input Com 7
3 Source C2 6
4 Gnd Gate 5
10μF
1 V+ C1 8
+
IRFZ44
100 ?
Figure 9. 30-Ampere
Time-Delay Relay
OUT P UT
(Delay=2.5s)
100nF
START
RUN
12V
T
M
Time-Delay Relay (Figure 9). The MIC5011 forms the basis
of a simple time-delay relay. As shown, the delay commences
when power is applied, but the 100kΩ/1N4148 could be
independently driven from an external source such as a
switch or another high-side driver to give a delay relative
to some other event in the system. Hysteresis has been
added to guarantee clean switching at turn-on.
Motor Driver with Stall Shutdown (Figure 10). Tachometer
feedback can be used to shut down a motor driver circuit
when a stall condition occurs. The control switch is a 3-way
type; the “START” position is momentary and forces the
driver ON. When released, the switch returns to the “RUN”
position, and the tachometer's output is used to hold the
MIC5011 input ON. If the motor slows down, the tach output
is reduced, and the MIC5011 switches OFF. Resistor “R”
sets the shutdown threshold.
STOP
Figure 10. Motor Stall
Shutdown
15V
+
MIC5011
2 Input
Com 7
1nF
T
Electronic Governor (Figure 11). The output of an ac
tachometer can be used to form a PWM loop to maintain
the speed of a motor. The tachometer output is recti?ed,
partially ?ltered, and fed back to the input of the MIC5011.
When the motor is stalled there is no tachometer output,
and MIC5011 input is pulled high delivering full power to
the motor. If the motor spins fast enough, the tachometer
output is suf?cient to pull the MIC5011 input low, shutting
the output off. Since the recti?ed waveform is only partially
?ltered, the input oscillates around its threshold causing
the MIC5011 to switch on and off at the frequency of the
tachometer signal. A PWM action results since the average
dc voltage at the input decreases as the motor spins faster.
The 1kΩ potentiometer is used to set the running speed of
the motor. Loop gain (and speed regulation) is increased
by increasing the value of the 100nF ?lter capacitor.
330k?
330k?
3 Source C2 6
4 Gnd Gate 5
1N4148
100nF
15V
1k ?
10μF
1 V+ C1 8
M
IRF541
The performance of such a loop is imprecise, but stable
and inexpensive. A more elaborate loop would consist of a
PWM controller and a half-bridge.
MIC5011
10
Figure 11.
Electronic Governor
July 2005
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC5011YN | 功能描述:功率驱动器IC High Side MOSFET Predriver - Lead Free RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MIC5012 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Dual High- or Low-Side MOSFET Driver Not Recommended for New Designs |
| MIC5012BN | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Dual High- or Low-Side MOSFET Driver Not Recommended for New Designs |
| MIC5012BWM | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Dual High- or Low-Side MOSFET Driver Not Recommended for New Designs |
| MIC5013 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Protected High- or Low-Side MOSFET Driver |
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