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TIDM-1000: Voltage feedback

Part Number: TIDM-1000

Hello,

I have changed some hardware to allow a higher pfc_bus voltage and Vac input voltage, the values are shown below.

I am not having any luck getting the unit to run. 

What should these values be for the resistor changes I have made.

vienna_settings.h

91  #define VIENNA_VAC_MAX_SENSE_VOLTS ((float32_t)500)
92  #define VIENNA_VDCBUS_MAX_SENSE_VOLTS ((float32_t)1010)
93  #define VIENNA_V_MAX_SENSE_VOLTS ((float32_t)606)

140   #define VIENNA_VBUS_REF_SET_VOLTS ((float32_t)800)

*******************************************************************************************************8

Vbus 

Rb changed the resistor to 1.62k 

 Rd changed the resistor to 9.09k

fVac

Rf changed the resistor to 1.62k 

Rh changed the resistor to 9.09k

Thanks

Steve

  • Hi Steven,

    1. 

    91  #define VIENNA_VAC_MAX_SENSE_VOLTS ((float32_t)500)                 This could be set to be the same as VIENNA_V_MAX_SENSE_VOLTS for per unit value calculation
    92  #define VIENNA_VDCBUS_MAX_SENSE_VOLTS ((float32_t)1010)        This could be based on calculation.xlsx or TINA tool (considering the non-idealities of AMC 1301)
    93  #define VIENNA_V_MAX_SENSE_VOLTS ((float32_t)606)                       This could be based on calculation.xlsx or TINA tool (considering the non-idealities of AMC 1301)

    140   #define VIENNA_VBUS_REF_SET_VOLTS ((float32_t)800)   This is the output voltage ref.

    2. The thread below explains the different between the calculation and TINA simulation

    http://e2e.ti.com/support/microcontrollers/c2000/f/171/p/718532/2652776#2652776

    Regards,

    Chen