收藏本站
IRS26310DJPbF
Integrated Bootstrap FET limitation
The integrated Bootstrap FET functionality has an operational limitation under the following bias conditions applied to
the HVIC:
?
?
VCC pin voltage = 0V AND
VS or VB pin voltage > 0
In the absence of a VCC bias, the integrated bootstrap FET voltage blocking capability is compromised and a
current conduction path is created between VCC & VB pins, as illustrated in Fig.38 below, resulting in power loss
and possible damage to the HVIC.
Figure 38: Current conduction path between VCC and VB pin
Relevant Application Situations:
The above mentioned bias condition may be encountered under the following situations:
?
?
In a motor control application, a permanent magnet motor naturally rotating while VCC power is OFF.
In this condition, Back EMF is generated at a motor terminal which causes high voltage bias on VS
nodes resulting unwanted current flow to VCC.
Potential situations in other applications where VS/VB node voltage potential increases before the
VCC voltage is available (for example due to sequencing delays in SMPS supplying VCC bias)
Application Workaround:
Insertion of a standard p-n junction diode between VCC pin of IC and positive terminal of VCC capacitors (as
illustrated in Fig.39) prevents current conduction “out-of” VCC pin of gate driver IC. It is important not to connect
the VCC capacitor directly to pin of IC. Diode selection is based on 25V rating or above & current capability
aligned to ICC consumption of IC - 100mA should cover most application situations. As an example, Part number
# LL4154 from Diodes Inc (25V/150mA standard diode) can be used.
www.irf.com
34
? 2008 International Rectifier
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
IRS4427PBF IC MOSFET DRIVER
IRS4427SPBF IC DVR LOW SIDE DUAL 8-SOIC
IRS4428STRPBF IC DVR LOW SIDE DUAL 8-SOIC
ISL2100AAR3Z IC DVR HALF-BRDG HF 100V 2A 9DFN
ISL2111ABZ IC MSFT DVR HALF-BRG 100V 8-SOIC
ISL6160EVAL2 EVAL BOARD FOR ISL6160/HIP6006
ISL6207CBZ IC DRIVER MOSFET DUAL SYNC 8SOIC
ISL6208ACBZ IC MOSFET DRVR SYNC BUCK 8-SOIC
相关代理商/技术参数
IRS27951 制造商:未知厂家 制造商全称:未知厂家 功能描述:
IRS27951S 制造商:IRF 制造商全称:International Rectifier 功能描述:Programmable minimum and maximum switching frequency
IRS27951SPBF 功能描述:功率驱动器IC 600V HALF BRDG HI VTG CTRLLER IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
IRS27951STRPBF 功能描述:功率驱动器IC Resonant 1/2 Brdg Cntrl IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
IRS27952 制造商:IRF 制造商全称:International Rectifier 功能描述:Programmable minimum and maximum switching frequency
IRS279524 制造商:IRF 制造商全称:International Rectifier 功能描述:Programmable minimum and maximum switching frequency
IRS279524SPBF 制造商:International Rectifier 功能描述:RESONANT HALF BRIDGE CONVERTER CONTROL IC - Rail/Tube 制造商:International Rectifier 功能描述:IC DRIVER HALF-BRIDGE 14-SOIC 制造商:International Rectifier 功能描述:TUBE / Resonant Half Bridge Converter Control IC
IRS279524STRPBF 制造商:International Rectifier 功能描述:RESONANT HALF BRIDGE CONVERTER CONTROL IC - Tape and Reel 制造商:International Rectifier 功能描述:IC DRIVER HALF-BRIDGE 14-SOIC 制造商:International Rectifier 功能描述:T&R / Resonant Half Bridge Converter Control IC