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參數(shù)資料
| 型號： | 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)動器 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 189K |
| 代理商： | MIC5010 |
April 1998
5-97
MIC5010
Applications Information
(Continued)
Micrel
5
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
IRFZ40
10μF
20k
Figure 7. 10-Ampere
Electronic Circuit Breaker
+
NC
NC
100
22m
CPSL-3 (Dale)
LOAD
12V
10k
10k
100nF
1N4148
100k
100k
100k
MPSA05
12V
constant, and it simulates the thermal response of the
filament. If the lamp is pulse-width modulated, the current
limit will be reduced by the residual charge left in C
TH
.
Modifying Switching Times
. Do not add external capaci-
tors to the gate to slow down the switching time. Add a
resistor (1k
to 51k
) in series with the gate of the MOS-
FET to achieve this result.
External capacitors can be added at C1 and C2 for faster
switching times (see Block Diagram). Values of 100pF to
1nF produce useful speed increases. If component count is
critical, C2 (pins 9 to 10) can be used alone with only a small
loss of speed compared to using both capacitors.
Bootstrapped High-Side Driver
(Figure 6). The speed of
a high-side driver can be increased to better than 10
μ
s by
bootstrapping the supply off of the MOSFET source. This
topology can be used where the load is pulse-width modu-
lated (100Hz to 20kHz), or where it is energized for only a
short period of time (
≤
25ms). If the load is left energized for
a long period of time (>25ms), the bootstrap capacitor will
discharge and the MIC5010 supply pin will fall to V
+
= V
DD
– 1.4. Under this condition pins 5 and 6 will be held above
V
+
and may false trigger the over-current circuit. A larger
capacitor will lengthen the maximum “on” time; 1000
μ
F will
hold the circuit up for 2.5 seconds, but requires more charge
time when the circuit is turned off. The optional Schottky
barrier diode improves turn-on time on supplies of less than
10V.
Since the supply current in the “off” state is only a small
leakage, the 100nF bypass capacitor tends to remain
charged for several seconds after the MIC5010 is turned off.
In a PWM application the chip supply is actually much
higher than the system supply, which improves switching
time.
Electronic Circuit Breaker
(Figure 7). The MIC5010 forms
the basis of a high-performance, fast-acting circuit breaker.
By adding feedback from FAULT to INPUT the breaker can
be made to automatically reset. If an over-current condition
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
IRF540
10μF
20k
Figure 6. Bootstrapped
High-Side Driver
Control Input
+
NC
NC
100
18m
LOAD
100nF
1N4001 (2)
1N5817
=7 to 15V
+
V
1mA
R1=
V
DD
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場效應(yīng)管驅(qū)動器) |
| 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）: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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