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參數(shù)資料
| 型號： | IRS20954STRPBF |
| 廠商： | International Rectifier |
| 英文描述： | Protected Digital Audio Driver |
| 中文描述： | 受保護的數(shù)字音頻驅(qū)動程序 |
| 文件頁數(shù)： | 13/25頁 |
| 文件大?。?/td> | 585K |
| 代理商： | IRS20954STRPBF |
IRS20954S
www.irf.com
13
HIGH
SIDE
CS
VB
HO
VS
LOW SIDE CS
UV
Q
UV
DETECT
DEAD TIME
VCC
LO
COM
CSH
SD
OCSET
UV
DETECT
HV
LEVEL
SHIFT
HV
LEVEL
SHIFT
FLOATING HIGH SIDE
5V REG
-B
Vcc
+B
OUT
R1
R2
R3
D1
Q1
Q2
R4
R5
Dbs
Cbs
VREF
Figure 12: Bi-Directional Over-Current Protection
Low Side Over-Current Sensing
For the negative load current, low side over-current sensing monitors over load condition and shutdown the switching operation
if the load current exceeds the preset trip level.
The low side current sensing is based on measurement of V
DS
during the low side MOFET on state. In order to avoid incorrect
current value due to overshoot , V
S
sensing ignores the first 200 ns signal after LO turned on.
OCSET pin is to program the threshold for low side over-current sensing. The threshold voltage at V
S
pin turning on the OC
protection is the same as the voltage applied to the OCSET pin to COM. It is recommended to use V
REF
to supply a reference
voltage to a resistive divider, R4 and R5, generating a voltage to OCSET for better immunity against V
CC
fluctuations.
OC
REF
OCREF
5.1V
COM
OCSET
VS
OC
+
-
IRS20954
OC Comparator
R4
R5
-B
+B
OUT
Q1
Q2
LO
LO
0.5mA
Figure 13: Low-Side Over-Current Sensing
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IRS20955PBF | PROTECTED DIGITAL AUDIO DRIVER |
| IRS20955SPBF | PROTECTED DIGITAL AUDIO DRIVER |
| IRS2104PBF | HALF-BRIDGE DRIVER |
| IRS2104SPBF | HALF-BRIDGE DRIVER |
| IRS2106 | HIGH AND LOW SIDE DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IRS20955PBF | 制造商:International Rectifier 功能描述:MOSFET DRVR 100V 1.2A 2-OUT HI/LO SIDE HALF BRDG INV/NON-INV - Bulk |
| IRS20955SPBF | 功能描述:功率驅(qū)動器IC 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| IRS20955STRPBF | 功能描述:功率驅(qū)動器IC 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| IRS20957SPBF | 功能描述:功率驅(qū)動器IC Prot DIG Audio DRVR 100V 1.0A 500ns 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| IRS20957SPBF | 制造商:International Rectifier 功能描述:IC MOSFET DRIVER HIGH-SPEED SOIC-16 制造商:International Rectifier 功能描述:IC, MOSFET DRIVER, HIGH-SPEED, SOIC-16 |
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