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參數(shù)資料
| 型號(hào)： | IRS20954S |
| 廠商： | International Rectifier |
| 英文描述： | Protected Digital Audio Driver |
| 中文描述： | 受保護(hù)的數(shù)字音頻驅(qū)動(dòng)程序 |
| 文件頁(yè)數(shù)： | 11/25頁(yè) |
| 文件大?。?/td> | 585K |
| 代理商： | IRS20954S |
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IRS20954S
www.irf.com
11
Self Reset Protection
By simply putting a capacitor between the CSD and V
SS
, the OCP in the IRS20954 acts as a self.
VB
VDD
IN
CSD
VSS
COM
OCSET
LO
VCC
HO
VS
DT
CSH
NC
NC
VREF
Ct
Figure 8: Self-Reset Protection Configuration
Designing Ct
Timing capacitor Ct programs the protection resume interval timing t
PR
given as:
V
Ct
t
=
1
[sec]
CSD
DD
PR
I
or
DD
CSD
V
PR
I
t
Ct
=
1
[F]
For example, t
PR
is 1.2 s with a 10 μF capacitor for V
DD
=10.8 V. The start-up time t
SU
, from power-up to
shutdown release, is given as:
V
Ct
t
=
7
[sec]
CSD
DD
SU
I
or
DD
CSD
V
SU
I
t
7
Ct
=
[F]
Protection-resume timing t
PR
should be long enough to avoid over heating and failure of the MOSFET from
the repetitive sequences of shutdown and resume when the load is in continuous short circuit. In most of
applications, the minimum recommended protection-resume timing t
PR
is 0.1 s.
where I
CSD
is charge/discharge current in CSD pin, 100 μA.
V
DD
is supply voltage respect to V
SS.
Shutdown Input
By externally discharging Ct down to below V
th2
, for example with a transistor shown in Fig. 9, the IRS20954 enters
shutdown mode. The operation resumes when the voltage of CSD pin comes back and cross the upper threshold of
CSD, Vth1, by its charging process.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IRS20954SPBF | Protected Digital Audio Driver |
| IRS20954STRPBF | Protected Digital Audio Driver |
| IRS20955PBF | PROTECTED DIGITAL AUDIO DRIVER |
| IRS20955SPBF | PROTECTED DIGITAL AUDIO DRIVER |
| IRS2104PBF | HALF-BRIDGE DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IRS20954SPbF | 功能描述:功率驅(qū)動(dòng)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(shí)間: 下降時(shí)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 |
| IRS20954STRPbF | 功能描述:功率驅(qū)動(dòng)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(shí)間: 下降時(shí)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 |
| 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(dòng)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(shí)間: 下降時(shí)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(dòng)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(shí)間: 下降時(shí)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 |
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