参数资料
型号: IRS26072DSPBF
厂商: International Rectifier
文件页数: 21/30页
文件大小: 0K
描述: IC DVR HI/LOW SIDE 600V 8-SOIC
标准包装: 95
配置: 高端和低端,独立
输入类型: 非反相
延迟时间: 200ns
电流 - 峰: 200mA
配置数: 1
输出数: 2
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: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
IRS26072DSPbF
Routing and Placement: Power stage PCB parasitic elements can contribute to large negative voltage transients at
the switch node; it is recommended to limit the phase voltage negative transients. In order to avoid such
conditions, it is recommended to 1) minimize the high-side source to low-side collector distance, and 2) minimize
the low-side emitter to negative bus rail stray inductance. However, where negative V S spikes remain excessive,
further steps may be taken to reduce the spike. This includes placing a resistor (5 or less) between the V S pin
and the switch node (see Figure 22), and in some cases using a clamping diode between COM and V S (see
Figure 23). See DT04-4 at www.irf.com for more detailed information.
V B
HO
C BS
DC+ BUS
V B
HO
C BS
DC+ BUS
V S
LO
R VS
To
Load
V S
LO
R VS
D VS
To
Load
COM
DC- BUS
Figure 22: V S resistor
COM
DC- BUS
Figure 23: V S clamping diode
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.24 below, resulting in power loss and
possible damage to the HVIC.
Figure 24: Current conduction path between VCC and VB pin
www.irf.com
21
? 2009 International Rectifier
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