Part Number: TMS320F28P650DH Tool/software: According to the original text in Section 6.12.3.4.5 of the TMS320F28P65x Real-Time Microcontrollers: Negative Resistance: 1. Bring out the XTAL on XCLKOUT. 2. Place a potentiometer in series with the crystal…
Part Number: TMS320F280025 Tool/software: When I ported the F280025C's MotorControl_SDK to the F280025, the downloader couldn't connect to the F280025 anyway. However, when the external crystal of the F280025 is removed, the program can be downloaded…
Part Number: UC1525A Tool/software: I am suddenly experiencing an issue with a buck converter the historically used the UC1525AJ or the SG1525AJ PWM IC as a substitute when required due to availability issues. While the SG1525AJ IC continues to operate…
Part Number: DRV8425 Tool/software: Dears,
As shown in the attachment, there is an oscillation observed in the Iout waveform.
Do you have any advice or suggestions regarding this oscillation?
The circuit was designed according to the EVM board.
And…
Part Number: ISO1050
Tool/software:
Hi,
My customer has encountered an issue with ISO1050. He probed the pin pointed by blue arrow shown below. The screenshot shows there was an oscillation when CAN-RX voltage raised. Can you help with the schematic…
Part Number: DP83867E Tool/software: Hi, In the datasheet time diagram the XI 25 MHz clock signal is present before VDD power up. Is it possible the following power up power sequence:
1. VDDIO 3.3 V
2. VDDOSC 1.8 V - startup of the connected 25 MHz …
Part Number: UC1843A Other Parts Discussed in Thread: UC3842 Tool/software: From UCx84x datasheet (SLUS223G – APRIL 1997 – REVISED JULY 2022) Section 8.3.7 states: “The UC3842/3/4/5 oscillator must be set to a lower frequency than the sync…
Hello Colin,
The removing input cap is only for simulation purposes.. but we can focus on the actual bad units behavior from this point forward.
after removing the ferrite bead, the oscillations were eliminated, but the Vpk-pk still remain, and the failure…
Part Number: TMS570LS3137
Tool/software:
Hi,
Referring to the below tutorial and datasheet snippet, I am wondering could it be possible to failover between two external oscillators - namely from the main external OSCIN to EXTCLKIN1 or EXTCTLIN2 (similarly…
Part Number: TPS628501-Q1 Tool/software: I understand that abnormal oscillation of the output voltage is included in the failure mode "SW output not in specification - voltage or timing" in page 4. https://www.ti.com/lit/fs/sluaa53/sluaa53.…