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TDC1000-BSTEVM output

Dharmik Mehta
Prodigy 80 points
Other Parts Discussed in Thread: TDC1000

Hello

With reference to my previous post located at this link https://e2e.ti.com/support/sensor/ultrasonic/f/991/t/422763

We ordered a new board and followed the same procedure to get the 30V output on the TP2(30V) pin. But it looks like the new board is also not giving the desired results. 

Could you please guide me how to debug this issue?

  • 0
    TI__Mastermind 21685 points

    To resolve this issue, please do the following

    a) Enable "TDC1000-HV Boost Power Enable" checkbox in setup page  

    b) Set the enable period as 150000. This field in GUI is actually us not ms. I think insufficient enable period is causing the issue.

    Thanks,

    Vishy

  • 0 in reply to Vishy Viswanathan
    Prodigy 80 points

    HI

    The "TDC1000-HV Boost Power Enable" checkbox in setup page was already enabled. On changing the enable period there is no change observed in the output  

  • 0 in reply to Dharmik Mehta
    TI__Mastermind 21685 points
    I am checking this with the board designer. I will come back to you soon. thanks, Vishy
  • 0 in reply to Vishy Viswanathan
    TI__Mastermind 21685 points

    I got a TDC1000-BSTEVM setup with a TDC1000-GASEVM board and tested this issue. Enclosed here is the config file (TDC1000_Setup_gasevm.txt) I used. Once you are connected with the GUI to the TDC1000-GASEVM board, please load this config file. It sets up all the registers as well as the other parameters. Ensure in TDC1000 Register page "CONTINUOUS_TRIGGER" switch is ON (green). To check the board's functionality, I connected three scope probes on TDC1000-BSTEVM board: CH1 Yellow on TP2 (30V), CH2 Teal on J4.10, CH3 Purple on U2.6. Trigger is set on J4.10, falling edge. You can see the output in the enclosed scope shot file tdc1000-bstevm.jpg

    As you can see, the amplified transmit pulses are 30V level.

    Thanks,Vishy

    Fullscreen TDC1000_Setup_gasevm.txt Download 
    TDC1000_Config0                         2B
TDC1000_Config1                         45
TDC1000_Config2                         16
TDC1000_Config3                         02
TDC1000_Config4                         1F
TDC1000_TOF-1                           A0
TDC1000_TOF-0                           1E
TDC1000_Error_Flags                     00
TDC1000_Timeout                         63
TDC1000_Clock_Rate                      07
TDC1000_Conts_Trigger                   01
TDC7200_Config1                         02
TDC7200_Config2                         44
TDC7200_Interrupt_Status                07
TDC7200_Interrupt_Mask                  07
TDC7200_Coarse_Cntr_Ov_H                FF
TDC7200_Coarse_Cntr_Ov_L                FF
TDC7200_Clock_Cntr_Ov_H                 FF
TDC7200_Clock_Cntr_Ov_L                 FF
TDC7200_Clock_Cntr_Stop_Mask_H          00
TDC7200_Clock_Cntr_Stop_Mask_L          00
TRIGGER_UPDATE_FREQ                     0003
TDC_AVG/STDEV_NUM_ELEMS                 000A
SAVE_GRAPH_DATA_TO_FILE                 00
FLOW_MODE_SELECT                        01
Y-SCALE_CENTER                          0032
X-SCALE_RANGE                           0032
MEASURE_RTD1                            00
SAVE_RESULT_REGR_TO_FILE                00
GRAPH_MULTI_STOPS                       00
TDC_SELECT                              03
TEMP_RTD_SELECT                         00
TEMP_RTD_MODE                           01
TEMP_AVG/STDEV_NUM_ELEMS                000A
SAVE_TEMP_DATA                          00
GRAPH_YMAX_DATA                         000000008CCCCCCC
GRAPH_YMIN_DATA                         000000007FFFFFFF
TDC1000-HV_DRV_EN1                      01
TDC1000-HV_DRV_EN2                      01
HV_DRV_EN1_Period                       02BC
HV_DRV_EN2_Period                       012C
ENABLE_POWER_CYCLE                      00
CLK_FREQ_(1-16MHz)                      2.000000
CLK_SOURCE_SEL                          02
CPU_CLK_FREQ                            0C
CPU_CLK_EN                              01
TDC1000-HV_BST_PWR_EN                   01
HV_BST_PWR_EN_Period                    3A98
FWD2REV_FLOW_DELAY                      0000
TDC1000-IMPE_MATCH_EN                   00

  • 0 in reply to Vishy Viswanathan
    Prodigy 85 points

    Hey Vishy.. Thanks for testing this for us. This new configuration worked out for us. Main problem was with original board's broken boost converter. We ordered new board and that one seems to be showing expected behavior.

  • 0 in reply to r3user
    TI__Mastermind 21685 points
    Thanks for letting us know.