Power Management ICs Forum Discussions

Hello, 

I have a question about a few CANbus transceivers, i am looking for a new IC to replace the TLE6251-2G with a newer IC I was looking at the TLE6251DXUMA2 but i don't fully understand the datasheet for it. The main thing that i need is a wakeup signal from the transceiver to and external MCU that can wake the MCU. the TLE6251-2G has the NERR pin but the TLE6251DXUMA2 does not. I have seen that the TLE6251DXUMA2 has the bus wakeup and i see that it does something with the STB pin but does this pin give a signal when a wake-up frame is detected?

Kind regards

HI,

We are using  the part part IR35204MTRPBF . But unfortunately it is not working.
i ask someting.

first of all, i do not have programmed this chip. And then, just soldered in my PCB.

1. Does this chip require programming?

2. If not programming, What is default voltage each pins?  

3. How to program this chip?

Hello,

We are using Aurix TC364 Evaluation Board. We have developed CDD to use the TLF35584 Window Wacthdog functionality.

The TLF35584 always stays in the INIT state due to error even after requesting to move to NORMAL state.

Below are the sequence, we are following to initialiaze the window watchdog

1. Clearing fault status of the register offset range 0x1A.....0x25 by writting oxFF data.

2. Unlock the TLF35584 chipset.

3. Request standby regulator QST enable

4. Disabled Error Pin Monitoring (ERREN =0).

5. Setup the Wake timer configuration(10ms).

6. Setup wake timer enable, wake timer period , window watchdog error threshold counter value and select the SPI triggering mode (WKTIMEN = 1, WKTIMCYC =1(10ms), WWDETHR=7, WWDTSEL=1).

7. Enabled the window watchdog and request window watchdog cyclic time (WWDEN =1, WDCYC= 1(ms tick period))

8. Setup WWD Open Window and Closed Window ( OW =0(50 wd cycles), CW=0(50 wd cycles)).

9. Lock the TLF35584 chipset.

10. Trigger the window watchdog during the long open window and to start the new closed window.

11. Request the TLF35584 device to change the state from INIT to NORMAL state.

Note: In our evaluation board, the ROT PIN is connected to /PORST and whenever, we do the reset, the long open window should start.

We have the periodic 50ms task and from the task, we are triggering window watchdog over SPI.

We have added test code to see the device state and error flag in cyclic function. We saw that,

1. The STATE == 1 in the DEVSTAT register ( the TLF35584 is in INIT state, not moved in NORMAL after request also)

2. The WWDF == 1 in the INITERR register ( after clearing fault during initialization).

What should we do so that we can use the TLF35584 window watchdog functionality?

Dear Experts,

I'm looking for topologies for 65W adapters with power transmission (PD) capabilities.

I'm currently considering two topologies: Active Clamp Flyback (ACF) and Active High Side Bias (AHB) Flyback.

I know that AHB flyback topology has grown in popularity over the last two years.

I have a couple of questions about topology selection and thank you very much for the advice of Infineon experts:

1. What topology between AHB flyback and ACF generally provide greater efficiency?
2. What are the advantages and disadvantages of AHB flyback and ACF topologies?
3. Can you recommend the best solution to me? Please tell me why

Thank you for your valuable help.

Dear All 

Goodnoon

Please help me to understand why the waveform in not continuous:

Yellow: Primary Current, Blue: Output Voltage, Red: HS Vgs, Green: LS Vgs

Regards