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參數資料
| 型號： | MIC5020 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Replaced by PTN78060W : |
| 中文描述： | 電流感應低側MOSFET驅動器 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 99K |
| 代理商： | MIC5020 |
MIC5020
Micrel
5-162
October 1998
General Description
The MIC5020 low-side MOSFET driver is designed to oper-
ate at frequencies greater than 100kHz (5kHz PWM for 2% to
100% duty cycle) and is an ideal choice for high-speed
applications such as motor control, SMPS (switch mode
power supplies), and applications using IGBTs. The MIC5020
can also operate as a circuit breaker with or without automatic
retry. The MIC5020’s maximum supply voltage lends itself to
control applications using up to 50V. The MIC5020 can
control MOSFETs that switch voltages greater than 50V.
A rising or falling edge on the input results in a current source
or sink pulse on the gate output. This output current pulse can
turn on or off a 2000pF MOSFET in approximately 175ns.
The MIC5020 then supplies a limited current (< 2mA), if
necessary, to maintain the output state.
An overcurrent comparator with a trip voltage of 50mV makes
the MIC5020 ideal for use with a current sensing MOSFET.
An external low value resistor may be used instead of a
sensing MOSFET for more precise overcurrent control. An
optional external capacitor connected to the C
T
pin may be
used to control the current shutdown duty cycle from 20% to
< 1%. A duty cycle from 20% to about 75% is possible with
an optional pull-up resistor from C
T
to V
DD
. An open collector
output provides a fault indication when the sense inputs are
tripped.
The MIC5020 is available in 8-pin SOIC and plastic DIP
packages.
Other members of the MIC502x series include the MIC5021
high-side driver and the MIC5022 half-bridge driver with a
cross-conduction interlock.
MIC5020
Current-Sensing Low-Side MOSFET Driver
Ordering Information
Part Number
MIC5020BM
MIC5020BN
Temperature Range
–40
°
C to +85
°
C
–40
°
C to +85
°
C
Package
8-pin SOIC
8-pin Plastic DIP
Low-Side Driver with Overcurrent Trip and Retry
Features
11V to 50V operation
175ns rise/fall time driving 2000pF
TTL compatible input with internal pull-down resistor
Overcurrent limit
Fault output indication
Gate to source protection
Compatible with current sensing MOSFETs
Applications
Lamp control
Heater control
Motor control
Solenoid switching
Switch-mode power supplies
Circuit breaker
Typical Application
V
DD
Input
Fault
C
T
Gate
Sense
Sense
+
Gnd
150kHz max.
N-Channel
Power MOSFET
V+
MIC5020
1
2
3
4
8
7
6
5
10μF
L
R
SENSE
+11V to +50V
R
SENSE =
50mV
I
TRIP
* increases time before retry
optional*
相關PDF資料 |
PDF描述 |
|---|---|
| MIC5020BM | Replaced by PTN78060W : |
| MIC5020BN | Replaced by PTN78060W : |
| MIC5021 | Replaced by PTN78060W : |
| MIC5021BM | Replaced by PTN78060W : |
| MIC5021BN | Replaced by PTN78060W : |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC5020_05 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Current-Sensing Low-Side MOSFET Driver |
| MIC5020BM | 功能描述:IC DRIVER MOSF LO SIDE HS 8-SOIC 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:1 輸出數: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 |
| MIC5020BM TR | 功能描述:IC DRIVER MOSF LO SIDE HS 8-SOIC 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:1 輸出數: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 |
| MIC5020BN | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Current-Sensing Low-Side MOSFET Driver |
| MIC5020YM | 功能描述:功率驅動器IC High Speed Low Side MOSFET Driver - 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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