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參數(shù)資料
| 型號(hào)： | MIC5010 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Full-Featured High- or Low-Side MOSFET Driver |
| 中文描述： | 全功能高或低側(cè)MOSFET驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 189K |
| 代理商： | MIC5010 |
MIC5010
Micrel
5-98
April 1998
Inhibit
Input
Thresh
Sense
Source
Gnd
Fault
V+
C1
Com
C2
Gate
1
2
3
4
5
6
7
8
9
10
11
12
13
14
MIC5010
IRFP044 (2)
10μF
20k
Figure 9. 50-Ampere
Industrial Switch
+
NC
NC
100
5m
LVF-15 (RCD)
LOAD
24V
15k
OFF
330k
100k
ON
24V
CR2943-NA102A
(GE)
extends out from the control box, is more easily pressed.
This circuit is compatible with control boxes such as the
CR2943 series (GE). The circuit is configured so that if both
switches close simultaneously, the “off” button has prece-
dence. If there is a fault condition the circuit will latch off, and
it can be reset by pushing the “on” button.
This application also illustrates how two (or more) MOSFETs
can be paralleled. This reduces the switch drop, and distrib-
utes the switch dissipation into multiple packages.
High-Voltage Bootstrap
(Figure 10). Although the MIC5010
is limited to operation on 7 to 32V supplies, a floating
bootstrap arrangement can be used to build a high-side
switch that operates on much higher voltages. The MIC5010
and MOSFET are configured as a low-side driver, but the
load is connected in series with ground. The high speed
normally associated with low-side drivers is retained in this
circuit.
Power for the MIC5010 is supplied by a charge pump. A
20kHz square wave (15Vp-p) drives the pump capacitor
and delivers current to a 100
μ
F storage capacitor. A zener
diode limits the supply to 18V. When the MIC5010 is off,
power is supplied by a diode connected to a 15V supply.
The circuit of Figure 8 is put to good use as a barrier
between low voltage control circuitry and the 90V motor
supply.
Half-Bridge Motor Driver
(Figure 11). Closed loop control
of motor speed requires a half-bridge driver. This topology
presents an extra challenge since the two output devices
should not cross conduct (shoot-through) when switching.
Cross conduction increases output device power dissipa-
tion and, in the case of the MIC5010, could trip the over-
current comparator. Speed is also important, since PWM
control requires the outputs to switch in the 2 to 20kHz
range.
The circuit of Figure 11 utilizes fast configurations for both
the top- and bottom-side drivers. Delay networks at each
input provide a 2 to 3
μ
s dead time effectively eliminating
occurs, the circuit breaker shuts off. The breaker tests the
load every 18ms until the short is removed, at which time the
circuit latches ON. No reset button is necessary.
Opto-Isolated Interface
(Figure 8). Although the MIC5010
has no special input slew rate requirement, the lethargic
transitions provided by an opto-isolator may cause oscilla-
tions on the rise and fall of the output. The circuit shown
accelerates the input transitions from a 4N35 opto-isolator
by adding hysteresis. Opto-isolators are used where the
control circuitry cannot share a common ground with the
MIC5010 and high-current power supply, or where the
control circuitry is located remotely. This implementation is
intrinsically safe; if the control line is severed the MIC5010
will turn OFF.
Fault-Protected Industrial Switch
(Figure 9). The most
common manual control for industrial loads is a push button
on/off switch. The “on” button is physically arranged in a
recess so that in a panic situation the “off” button, which
Applications Information
(Continued)
100k
Figure 8. Improved
Opto-Isolator Performance
1k
To MIC5010 Input
100k
4N35
33k
33pF
MPSA05
15V
10mA
Control Input
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MIC5010BM | Full-Featured High- or Low-Side MOSFET Driver |
| MIC5010BN | Full-Featured High- or Low-Side MOSFET Driver |
| MIC5013 | Protected High- or Low-Side MOSFET Driver(帶過流保護(hù)的高/低邊MOS場(chǎng)效應(yīng)管驅(qū)動(dòng)器) |
| MIC5013BM | FPGA 1000000 SYSTEM GATE 1.8 VOLT - NOT RECOMMENDED for NEW DESIGN |
| MIC5013BN | FPGA 1000000 SYSTEM GATE 1.8 VOLT - NOT RECOMMENDED for NEW DESIGN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC5010BM | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Full-Featured High- or Low-Side MOSFET Driver |
| MIC5010BN | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Full-Featured High- or Low-Side MOSFET Driver |
| MIC5011 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Minimum Parts High- or Low-Side MOSFET Driver |
| 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(qū)動(dòng)器 - 外部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 配置:高端 輸入類型:非反相 延遲時(shí)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(dǎo)啟動(dòng)）: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(yīng)商設(shè)備封裝:8-DIP 包裝:管件 其它名稱:*IR2127 |
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