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參數(shù)資料
| 型號： | STD55NH2LL |
| 英文描述： | N-CHANNEL 24V - 0.008 OHM - 55A DPAK/IPAK ULTRA LOW GATE CHARGE STRIPFET POWER MOSFET |
| 中文描述： | N溝道24V的- 0.008歐姆- 55A條的DPAK /像是iPak超低柵極電荷STRIPFET功率MOSFET |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 345K |
| 代理商： | STD55NH2LL |
STD55NH2LL
8/10
SW1
SW2
APPENDIX A
Buck Converter: Power Losses Estimation
The power losses associated with the FETs in a Synchronous Buck converter can be
estimated using the equations shown in the table below. The formulas give a good
approximation, for the sake of performance comparison, of how different pairs of devices
affect the converter efficiency. However a very important parameter, the working
temperature, is not considered. The real device behavior is really dependent on how the
heat generated inside the devices is rmoved to allow for a safer working junction
temperature.
The low side (
SW2
) device requires:
Very low R
DS(on)
to reduce conduction losses
Small Q
gls
to reduce the gate charge losses
Small C
oss
to reduce losses due to output capacitance
Small Q
rr
to reduce losses on SW
1
during its turn-on
The C
gd
/C
gs
ratio lower than V
th
/V
gg
ratio especially with low drain to source
voltage to avoid the cross conduction phenomenon;
The high side (
SW1)
device requires:
Small R
g
and L
s
to allow higher gate current peak an to limit the voltage
feedback on the gate
Small Q
g
to have a faster commutation and to reduce gate charge losses
Low R
DS(on)
to reduce the conduction losses.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| STD55NH2LL_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:N-channel 24V - 0.010ohm - 40A - DPAK/IPAK Ultra low gate charge STripFET TM Power MOSFET |
| STD55NH2LL-1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:N-CHANNEL 24V - 0.010ohm - 40A DPAK/IPAK ULTRA LOW GATE CHARGE STripFET POWER MOSFET |
| STD55NH2LLT4 | 功能描述:MOSFET POWER MOSFET RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
| STD560BLK | 功能描述:LED 安裝硬件 .2" DIA. .56" BLACK RoHS:否 制造商:Bivar 產(chǎn)品:LED Mounting Clips LED 大小:5 mm 材料:Nylon 顏色:Black 主體長度:4.4 mm 面板厚度尺寸: 封裝:Bulk |
| STD570BLK | 功能描述:LED 安裝硬件 .2" DIA. .57" BLACK RoHS:否 制造商:Bivar 產(chǎn)品:LED Mounting Clips LED 大小:5 mm 材料:Nylon 顏色:Black 主體長度:4.4 mm 面板厚度尺寸: 封裝:Bulk |
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