参数资料
型号: IRS2332DSPBF
厂商: International Rectifier
文件页数: 25/39页
文件大小: 0K
描述: IC BRIDGE DVR 3PH 600V 28-SOIC
标准包装: 25
配置: 3 相桥
输入类型: 反相
延迟时间: 500ns
电流 - 峰: 250mA
配置数: 1
输出数: 3
高端电压 - 最大(自引导启动): 600V
电源电压: 10 V ~ 20 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
IRS233(0,2)(D)(S&J)PbF
Integrated Bootstrap FET limitation
The integrated Bootstrap FET functionality has an operational limitation under the following bias conditions applied to the
HVIC:
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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:
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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
25
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