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参数资料
| 型号： | ZXGD3104N8TC |
| 厂商： | Diodes Inc |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | IC SYNCH MOSFET CNTLR SO8 |
| 标准包装： | 1 |
| 配置： | 高端和低端，同步 |
| 输入类型： | 电压 |
| 延迟时间： | 250ns |
| 电流 - 峰： | 2.5A |
| 配置数： | 1 |
| 输出数： | 2 |
| 电源电压： | 5 V ~ 25 V |
| 工作温度： | -40°C ~ 150°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-SO |
| 包装： | 标准包装 |
| 其它名称： | ZXGD3104N8TCDKR |
A Product Line of
Diodes Incorporated
ZXGD3104N8
Descriptions of the normal operation
The operation of the controller is described step-by-step with reference to the timing diagram in Figure 1.
1. The controller monitors the MOSFET Drain-Source voltage.
2. When, due to transformer action, the MOSFET body diode is forced to conduct there is approximately -0.8V on the
Drain pin.
3. The detector outputs a positive voltage with respect to ground, this voltage is then fed to the MOSFET driver stage
and current is sourced out of the GATE pin.
4. The controller goes into proportional gate drive control — the GATE output voltage is proportional to the on-
resistance-induced Drain-Source voltage drop across the MOSFET. Proportional gate drive ensures that MOSFET
conducts for majority of the conduction cycle and minimizes body diode conduction time.
5. As the Drain current decays linearly toward zero, proportional gate drive control reduces the Gate voltage so the
MOSFET can be turned off rapidly at zero current crossing. The GATE voltage is removed when the Drain-Source
voltage crosses the detection threshold voltage to minimize reverse current flow.
6. At zero Drain current, the controller GATE output voltage is pulled low to V G(off) to ensure that the MOSFET is off.
Figure 1. Timing diagram for a critical conduction mode Flyback converter
ZXGD3104N8
Document Number DS35546 Rev. 1 – 2
6 of 13
www.diodes.com
November 2011
? Diodes Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXGD3105N8 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:Low standby power with quiescent supply current < 1mA |
| ZXGD3105N8TC | 功能描述:MOSFET Synch MOSFET Control SO-8 T&R 2.5K RoHS:否 制造商:STMicroelectronics 晶体管极性:N-Channel 汲极/源极击穿电压:650 V 闸/源击穿电压:25 V 漏极连续电流:130 A 电阻汲极/源极 RDS（导通）:0.014 Ohms 配置:Single 最大工作温度: 安装风格:Through Hole 封装 / 箱体:Max247 封装:Tube |
| ZXGIF11 | 制造商:OMRON AUTOMATION AND SAFETY 功能描述:INTER UNIT NPN (RS232 TO BIN) 制造商:OMRON Industrial Automation 功能描述:INTER UNIT NPN (RS232 TO BIN) |
| ZX-GIF11 | 功能描述:INTER UNIT NPN (RS232 TO BIN) RoHS:是 类别:传感器，转换器 >> 配件 系列:* 标准包装:1 系列:* 其它名称:Y92EEG18T |
| ZXGIF11A | 制造商:OMRON AUTOMATION AND SAFETY 功能描述:INTER UNIT NPN W/SETUP S/W 制造商:OMRON Industrial Automation 功能描述:INTER UNIT NPN W/SETUP S/W |
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