参数资料
型号: IRS2608DSPBF
厂商: International Rectifier
文件页数: 13/26页
文件大小: 0K
描述: IC DVR HALF BRIDGE 600V 8-SOIC
标准包装: 95
配置: 半桥
输入类型: 差分
延迟时间: 250ns
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
IRS2608DSPbF
Negative V S Transient SOA
A common problem in today’s high-power switching converters is the transient response of the switch node’s voltage as
the power switches transition on and off quickly while carrying a large current. A typical 3-phase inverter circuit is
shown in Figure 10; here we define the power switches and diodes of the inverter.
If the high-side switch (e.g., the IGBT Q1 in Figures 11 and 12) switches off, while the U phase current is flowing to an
inductive load, a current commutation occurs from high-side switch (Q1) to the diode (D2) in parallel with the low-side
switch of the same inverter leg. At the same instance, the voltage node V S1 , swings from the positive DC bus voltage to
the negative DC bus voltage.
Figure 10: Three phase inverter
DC+ BUS
Q1
ON
I U
V S1
Q2
D2
OFF
DC- BUS
Figure 11: Q1 conducting
Figure 12: D2 conducting
Also when the V phase current flows from the inductive load back to the inverter (see Figures 13 and 14), and Q4 IGBT
switches on, the current commutation occurs from D3 to Q4. At the same instance, the voltage node, V S2 , swings from
the positive DC bus voltage to the negative DC bus voltage.
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