参数资料
| 型号： | PI2161-EVAL1 |
| 厂商： | Vicor Corporation |
| 文件页数： | 15/18页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD FOR PI2161 |
| 标准包装： | 1 |
| 系列： | Picor®, Cool-Switch® |
| 主要目的： | 电源管理，高端驱动器（内部 FET） |
| 嵌入式： | 否 |
| 已用 IC / 零件： | PI2161 |
| 已供物品： | 板 |
| 其它名称： | 1102-1061 |
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MOSFET Junction Temperature for 10A at 60°C can
The minimum trip current is:
be estimated using the graph in Figure 14 as
illustrated in Figure 20 . Draw a vertical line from 10A
to intersect the 60°C ambient temperature line. At the
intersection draw a horizontal line towards the Y-axis
I TRIP ?
V OC _ THL * ? 144 * R DS ( on ) ? 11 * ( Rs ? 17.5) ?
12 * Rs * R DS ( on )
(Junction Temperature). The Junction Temperature at
maximum load current (10A) and 60°C ambient is
133°C.
I TRIP ?
63 * ? 144 * 16 . 26 ? 11 * (130 ? 17 .5) ?
12 * 130 * 16 . 26
? 9 . 85 A
? ?
R DS ( on ) ( T J ) ? R DS ( on ) ( 25 ? C ) * 0 . 873 * e 3 . 75 * T J * 10 ? 0 . 041
? ?
R DS ( on ) ( 133 ) ? 11 m ? * 0 . 873 * e 3 . 75 * 133 * 10 ? 0 . 041
? 3
? 3
R DS ( on ) ( 133 ) ? 16 . 26 m ?
Rs ?
V OC _ THL * ? 144 * R DS ( on ) ? 192.5 ?
12 * I TRIP * R DS ( on ) ? 11 * V OC _ THL
Rs ?
63 * ? 144 * 16 . 26 ? 192 .5 ?
12 * 10 * 16 . 26 ? 11 * 63
? 126 . 9 m ?
Figure 21: PI2161 configured for 10A minimum trip
The closest 1% resistor available off-the-shelf is
130mΩ.
Layout Recommendation:
Use the following general guidelines when designing
printed circuit boards. An example of the typical land
current
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?
?
?
Use a solid ground (return) plane to reduce circuit
parasitic.
Connect Rs terminal at SN pin side and all S pads
together with a wide trace to reduce trace
parasitics and to accommodate the high current
output, and also connect all D pads together with
a wide trace to accommodate the high current
input.
Kelvin connect SP pin and SN pin to Rs terminals
to the S pins.
Connect SL pins together with a wide trace
connect them to Rs.
?
?
Place C VC very close to PI2161 to have very short
traces to PI2161 pins without any PCB via in
between.
Use 1oz of copper or thicker if possible to reduce
trace resistance and reduce power dissipation.
Figure 22: PI2161 layout recommendation
Picor Corporation ? pi corpower.com
PI2161
Rev 1.1 , Page 15 of 18
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