參數(shù)資料
型號(hào)： IRS20955SPBF
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
文件頁數(shù)： 9/21頁
文件大?。?/td> 524K
代理商： IRS20955SPBF
IRS20955
(
S
)
PbF
PRELIMINARY
Functional Description
www.irf.com
9
Floating PWM Input
The IRS20955S accepts floating inputs, enabling
easy half-bridge implementation. V
DD
, CSD and IN
refer to V
SS
. As a result, the PWM input signal can
directly feed into IN while referencing V
SS
, which is
typically the midpoint between the positive and
negative DC bus voltages in a half-bridge
configuration.
The IRS20955S also accepts a non-floating input
when V
SS
is tied to COM.
IN
VDD
VSS
1
HV
LEVEL
SHIFT
CSD
PROTECTION
Floating Input Isolation
COM
Floating Bias
0V – 200V
IRS20955
Figure 5. Floating PWM Input Structure
Over
-
Current Protection (OCP)
The IRS20955S features over-current protection to
protect the power MOSFETs during abnormal load
conditions. The IRS20955S engages a sequence of
events when it detects the over-current condition
during high-side or low-side turn on.
As soon as either the high-side or low-side current
sensing block detects over-current:
1. The OC Latch (OCL) flips logic states and
shutdowns the outputs LO and HO.
2. The CSD pin starts discharging the external
capacitor Ct.
3. When V
CSD
, the voltage across Ct, falls
below the lower threshold Vth2, an output
signal from COMP2 resets OCL.
4. The CSD pin starts charging the external
capacitor Ct.
5. When V
CSD
goes above the upper threshold
V
th1
, the logic on COMP1 flips and the IC
resumes operation.
As long as the over current condition exists, the IC
will repeat the over current protection sequence.
Figure 6. Over-Current Protection Timing Chart
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
IRS20957SPBF 功能描述:功率驅(qū)動(dòng)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(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
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
IRS20957STRPBF 功能描述:功率驅(qū)動(dòng)器IC Class D Aud Drvr 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
IRS2101PBF 功能描述:功率驅(qū)動(dòng)器IC Hi&Lw Sd 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(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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