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)： 9/25頁(yè)
文件大?。?/td> 585K
代理商： IRS20954S
IRS20954S
www.irf.com
9
Functional Description
Floating PWM Input
The IRS20954 has a floating input interface which enables easy half bridge implementation. Three pins, V
DD
, CSD
and IN, are referenced to V
SS
. As a result, the PWM input signal can be directly fed into IN referencing ground, which
is typically middle point of DC bus in a half bridge configuration.
The IRS20954 also has a non-floating input with V
SS
tied to COM.
IN
VDD
VSS
1
HV
LEVEL
SHIFT
CSD
PROTECTION
Floating Input Isolation
COM
Floating Bias
0V – 200V
IRS20954
Figure 5: Floating PWM Input Structure
Over-Current Protection (OCP)
The IRS20954 features over-current protection to protect the power MOSFET from over load conditions. The IRS20954 enters
shutdown mode when it detects over-current condition either from low side or high side current sensing. The timing control
block measures resume timing interval with an external timing capacitor Ct. All the critical timing of the over-current protection is
specified and guaranteed for secure protection.
The sequence on the over-current detection is:
1. As soon as either high or low side current sensing block detects over-current condition, the OC Latch (OCL) flips and
shutdowns the outputs LO and HO.
2. The CSD pin starts discharging the external capacitor Ct.
3. When V
SCD
crosses the lower threshold Vth2, the output signal from the COMP2 resets the OCL.
4. The CSD pin starts charging the external capacitor Ct.
5. When V
SCD
crosses the upper threshold Vth1, the COMP1 flips and enables shutdown signal released.
6. If one of current sensing block detects over-current condition, the sequence is repeated until the cause of over-current
goes away.
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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