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Company | Trenz Electronic GmbH |
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PCN Number | PCN-20230601 |
Title | TEF1002-02 Q4 rise time change |
Subject | Q4 rise time change |
Issue Date | 2023-06-01 |
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#1 Changed R95 from 0Ohm to 2.2kOhm and C13 from 10nF to 100nF
Type: BOM change
Reason: 3V3_PER rail can be disabled/enabled via attached FPGA/SoC module using a RGPIO IP core to communicate with CPLD on TEF1002. If this function is used, enabling can lead to a reset of the module. This is due to a large inrush current, which is disturbing the module power supply. To prevent this the rise time is enlarged.
Impact: With new resistor and capacitor values the calculated 10%-90% rise time of Q4 is 0.4ms.
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