参数资料
型号: IR11662SPBF
厂商: International Rectifier
文件页数: 14/26页
文件大小: 0K
描述: IC CNTROL SMART RECTIFIER 8-SOIC
标准包装: 95
系列: Advanced Smart Rectifier™
配置: 高端
输入类型: 非反相
延迟时间: 60ns
电流 - 峰: 1A
配置数: 1
输出数: 1
电源电压: 11.4 V ~ 18 V
工作温度: -25°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
IR11662S
I PRIM
V PRIM
T1
T2
T3
time
I SEC
V SEC
time
Figure 2: Primary and secondary currents and voltages for DCM mode
I PRIM
V PRIM
T1
T2
time
I SEC
V SEC
time
Figure 3: Primary and secondary currents and voltages for CrCM mode
CCM Turn-off phase
In CCM mode the turn off transition is much steeper and dI/dt involved is much higher. The turn on phase is identical to DCM
or CrCM and therefore won’t be repeated here.
During the SR FET conduction phase the current will decay linearly, and so will V DS on the SR FET.
Once the primary switch will start to turn back on, the SR FET current will rapidly decrease crossing V TH1 and turning the gate
off. The turn off speed is critical to avoid cross conduction on the primary side and reduce switching losses.
Also in this case a blanking period will be applied, but given the very fast nature of this transition, it will be reset as soon as
V DS crosses V TH3 .
14
www.irf.com
? 2013 International Rectifier
Nov 6, 2013
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