[电源] UCC28019

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 楼主 | 2019-8-4 10:37 | 显示全部楼层 ||阅读模式
TI公司的UCC28019用tina仿真的时候只有6个管脚,而实际芯片封装有8个管脚 应该怎么仿真

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| 2019-8-4 13:52 | 显示全部楼层
UCC28019用tina仿真的时候只有6个管脚, 少了哪些脚呢?

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 楼主 | 2019-8-4 14:24 | 显示全部楼层
airwill 发表于 2019-8-4 13:52
UCC28019用tina仿真的时候只有6个管脚, 少了哪些脚呢?

VCC
VINS

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| 2019-8-4 14:36 | 显示全部楼层
VCC 7
Device supply: External bias supply input. Under Voltage Lock Out (UVLO) disables the controller until VCC exceeds a turn-on threshold of 10.5 V. Operation continues until VCC falls below the turn-off (UVLO) threshold of 9.5 V. A ceramic by-pass capacitor of 0.1 µ F minimum value should be connected from VCC to GND as close to the device as possible for high frequency filtering of the VCC voltage.
VINS 4 I
Input ac voltage sense: Input Brown Out Protection (IBOP) detects when the system ac-input voltage is above a user-defined normal operating level, or below a user-defined “ brown-out ” level. A filtered resistor-divider network connects from this pin to the rectified-mains node. At startup the controller is disabled until the VINS voltage exceeds a threshold of 1.5 V, initiating a soft-start. The controller is also disabled if VINS drops below the brown-out threshold of 0.8 V. Operation will not resume until both VINS and VSENSE voltages exceed their enable thresholds, initiating another soft-start.

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| 2019-8-6 15:11 | 显示全部楼层
没仿真过这个芯片  不清楚

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