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參數(shù)資料
| 型號： | MIC5011 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Minimum Parts High- or Low-Side MOSFET Driver(高/低邊MOS場效應管驅動器) |
| 中文描述： | 最小零件高或低側MOSFET驅動器（高/低邊馬鞍山場效應管驅動器） |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 121K |
| 代理商： | MIC5011 |
MIC5011
Micrel
MIC5011
10
July 2000
Applications Information
(Continued)
Figure 11. Electronic Governor
M
T
100nF
1N4148
Input
Source
Gate
1
2
3
4
8
MIC5011
V+
7
6
5
Gnd
C1
Com
C2
15V
IRF541
10μF
+
330k
330k
1k
1nF
15V
Figure 10. Motor Stall
Shutdown
M
T
STOP
RUN
START
12V
100nF
1N4148
Input
Source
Gate
1
2
3
4
8
MIC5011
V+
7
6
5
Gnd
C1
Com
C2
12V
IRFZ44
10μF
+
330k
330k
R
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 100k
/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). Tachom-
eter 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. Resis-
tor
“
R
”
sets the shutdown threshold.
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 rectified,
partially filtered, 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 sufficient to pull the MIC5011 input low, shutting the
output off. Since the rectified waveform is only partially
filtered, 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 1k
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 filter capacitor.
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.
Input
Source
Gate
1
2
3
4
8
MIC5011
V+
7
6
5
Gnd
C1
Com
C2
12V
IRFZ44
10μF
Figure 9. 30 Ampere
Time-Delay Relay
+
OUTPUT
(Delay=2.5s)
10k
100
47μF
+
100k
1N4148
相關PDF資料 |
PDF描述 |
|---|---|
| MIC5011BM | Minimum Parts High- or Low-Side MOSFET Driver |
| MIC5011BN | Minimum Parts High- or Low-Side MOSFET Driver |
| MIC5014-1 | Circular Connector; No. of Contacts:8; Series:; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:12; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:12-8 RoHS Compliant: No |
| MIC5014BM | FPGA 1000000 SYSTEM GATE 1.8 VOLT - NOT RECOMMENDED for NEW DESIGN |
| MIC5014BN | FPGA 1000000 SYSTEM GATE 1.8 VOLT - NOT RECOMMENDED for NEW DESIGN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MIC5011_05 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Minimum Parts High- or Low-Side MOSFET Driver |
| MIC5011BM | 功能描述:IC DRIVER MIN PARTS HI/LO 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅動器 - 外部開關 系列:- 標準包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導啟動）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| MIC5011BM TR | 功能描述:IC DRIVER MOSF HI/LOW SIDE 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅動器 - 外部開關 系列:- 標準包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導啟動）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| MIC5011BN | 功能描述:IC DRIVER MOSF HI/LOW SIDE 8-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅動器 - 外部開關 系列:- 標準包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時間:200ns 電流 - 峰:250mA 配置數(shù):1 輸出數(shù):1 高端電壓 - 最大（自引導啟動）:600V 電源電壓:12 V ~ 20 V 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
| MIC5011YM | 功能描述:功率驅動器IC High Side MOSFET Predriver - Lead Free RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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