SN6507-Q1: How to model SW1 and SW2 during soft start condition and duty cycle control method

Vishwas H R

Part Number: SN6507-Q1
Other Parts Discussed in Thread: SN6507

Tool/software:

Hello,

I want to model the SW1 and SW2 (maybe manual switch) during soft start condition and duty cycle control method enabled in pspice?

Can I know how to prepare model? Maybe you can explain it with an example of 12V as input.

Thank you

5 months ago

0 Shinu.V.Mathew 5 months ago

TI__Genius 10560 points

Hi Vishwas,

Currently WEBENCH is the only tool available for simulation and we don't have PSPICE model for this device.

For power stage simulation you can consider using POWERSTAGE-DESIGNER

Thanks.

0 Vishwas H R 5 months ago in reply to Shinu.V.Mathew

Intellectual 330 points

Hello Mathew,

In webench the simulation is not available.

I know complete model is not available in the website so, I want to know how to model only SW1 and SW2 during the soft start condition with duty cycle control method.

Thank you,

0 Steven Mappus1 5 months ago in reply to Vishwas H R

TI__Mastermind 32975 points

The DC function can maybe a crudely simulated by implementing a voltage feedforward function such that the duty cycle changes proportional to input voltage changing. Remember that the SN6507 is an open loop driver so there is no secondary side feedback available to improve the accuracy of duty cycle control.

Steve

0 Vishwas H R 5 months ago in reply to Steven Mappus1

Intellectual 330 points

Hello Steve,

If you have the model could you please shared it? I want to simulate and check inrush current during the soft start with duty cycle control with all the external components so I require model of SW1 and SW2 during this case.

Thank you,

0 Steven Mappus1 5 months ago in reply to Vishwas H R

TI__Mastermind 32975 points

Sorry but TI does not have a supported model available for SN6507. Only WEBENCH is available

Steve

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SN6507-Q1: How to model SW1 and SW2 during soft start condition and duty cycle control method