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參數(shù)資料
| 型號： | IRS20124S |
| 廠商： | International Rectifier |
| 英文描述： | DIGITAL AUDIO DRIVER WITH DISCRETE DEAD-TIME AND PROTECTION |
| 中文描述： | 數(shù)字音頻驅(qū)動與離散死區(qū)時間和保護 |
| 文件頁數(shù)： | 24/24頁 |
| 文件大?。?/td> | 218K |
| 代理商： | IRS20124S |
IRS20124S(PbF)
24
www.irf.com
WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245 Tel: (310) 322 3331
Data and specifications subject to change without notice. 9/21/2005
OC Output Signal
The OC pin is a 20V open drain output. The OC
pin is pulled down to ground when an over current
condition is detected. A single external pull-up
resistor can be shared by multiple IRS20124 OC
pins to form the ORing logic. In order for a micro-
processor to read the OC signal, this information
is buffered with a mono stable multi vibrator to
ensure 100ns minimum pulse width.
Because of unpredictable logic status of the OC
pin, the OC signal should be ignored during power
up/down.
Limitation from Body Diode in MOSFET
When a Class D stage outputs a positive current,
flowing from the Class D amp to the load, the body
diode of the MOSFET will turn on when the Drain
to Source voltage of the MOSFET become larger
than the diode forward drop voltage. In such a
case, the sensing voltage at the Vs pin of the
IRS20124 is clamped by the body diode. This
means that the effective Rds(on) is now much
lower than expected from Rds(on) of the MOSFET,
and the Vs node my not able to reach the thresh-
old to turn the OC output on before the MOSFET
fails. Therefore, the region where body diode
clamping takes a place should be avoided when
setting V
SOC-
.
Voltage in Vs
Load
Current
Vsoc- should be
set in this region
}
0
Body Diode Clamp
For further application information for gate driver
IC please refer to AN-978 and DT98-2a. For fur-
ther application information for class D applica-
tion, please refer to AN-1070 and AN-1071.
Figure 13. Body Diode in MOSFET Clamps vs
Voltage
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| IRS20124SPBF | 功能描述:功率驅(qū)動器IC DIGITAL AUDIO DRVR 200V 1A 60ns RoHS:否 制造商:Micrel 產(chǎn)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 |
| IRS20124STRPBF | 功能描述:功率驅(qū)動器IC Dig Aud Drvr w/Deadtime & Prot RoHS:否 制造商:Micrel 產(chǎn)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 |
| IRS2052M | 制造商:IRF 制造商全稱:International Rectifier 功能描述:2 CH Digital Audio Amplifier |
| IRS2052MPBF | 制造商:International Rectifier 功能描述:IRS2053 Series 3 Channel 6.2 W 60 dB Half Bridge Digital Audio Amplifier-MLPQ-48 |
| IRS2052MTRPBF | 功能描述:功率驅(qū)動器IC Gen5 HVIC 200V 48L 2Ch Dig Aud Drvr RoHS:否 制造商:Micrel 產(chǎn)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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