参数资料
型号: IRSF3011L
厂商: International Rectifier
文件页数: 11/13页
文件大小: 0K
描述: IC DRIVER LO SIDE 50V 5A SOT-223
标准包装: 80
类型: 低端
输入类型: 非反相
输出数: 1
导通状态电阻: 200 毫欧
电流 - 输出 / 通道: 7A
电流 - 峰值输出: 16A
工作温度: -55°C ~ 150°C
安装类型: 表面贴装
封装/外壳: TO-261-4,TO-261AA
供应商设备封装: SOT-223
包装: 管件
其它名称: *IRSF3011L
IRSF3011
Switching Characteristics
In the IRSF3011, the control logic and the protection
circuits are powered from the input pin. When positive
voltage appears at the input pin, the R-S flip-flop turns
Q2 on and connects the gate of the main device to the
input.
Figure A1. Block Diagram
Input voltage 5V/div.
Drain voltage 5V/div.
Drain Current: 1A/div.
Time: 1 m sV/div.
Figure A2. Waveforms switching clamped inductive
load using 5V input voltage
www.irf.com
The turn-on speed is limited by the channel resistance
of Q2 and the gate charge requirements of Q1. The
typical switching waveforms at 5V input voltage are
shown in Figure A2. Using higher input voltage will
improve the turn-on time but it will not affect the turn-
off switching speed.
Input voltage 5V/div.
Drain voltage 5V/div.
Drain Current: 1A/div.
Time: 1 m sV/div.
Figure A3. Switching waveforms with 7V Input
voltage
The typical waveforms at 7V input voltage are shown
in Figure A3. In typical switching applications (below
60kHz) the difference in switching losses between
the IRSF3011 / IRSF3012 and the same size standard
MOSFET is negligible.
Over-Current Protection
When the drain current exceeds the preset limit, the
protection circuit resets the internal flip-flop and turns
Q1 off. Normal operation can be restored by holding
the input voltage below the specified threshold level
(approx. 1.3V) for the specified minimum t reset time.
The typical waveforms at over-current shut-down are
shown in Figure A4. After turn-on, the current in the
inductor at the drain starts ramping up. At about 7A,
the over-current protection shuts down the device.
Over-Temperature Protection
Figure A5 illustrates the operation of the over-tem-
perature protection. The IRSF3011 / IRSF3012
switches a 2W resistive load to a 10V power supply.
When the thermal balance is established, the junc-
tion temperature is limited on a pulse-by-pulse basis.
11
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