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TPS1HB08-Q1: current sense typical value and precision of current feedback

Obinna Ezeilo
Intellectual 2175 points
Part Number: TPS1HB08-Q1

Hi Team, 

A customer of mine is evaluating the TPS1HB08-Q1 and had some questions:  

In the datasheet of the  TPS1HB08-Q1 the following is mentioned: 0.2mA/1000mA is 0.02% typ. value with maximum value of -5/+5.3%.

The current sense typical value differentiates a lot from the maximum value.

 

1. Is there a definition for the typical value? (RT? 12V? …)

 

2. Is there some data available that describes the precision of the current feedback in function of different voltages and temperature? 

 

3. Would it be possible to improve the precision by compensating the temperature influence with a typical temperature graph?

Thanks for the support in advance. 

Obinna. 

  • 0
    TI__Genius 12410 points

    Hello,

    The TPS1HB08 device has very high current sense accuracy for a high side switch. Typical high side switches would have double or triple the error.

    We do have data that we can show that shows the variation with temperature and voltage. However, you will need to email me at c-phillips@ti.com.

    What is the acceptable error for your application?