TPS1H100-Q1: TPS1H100-Q1:

Lokesh Nelavalli

Part Number: TPS1H100-Q1
Other Parts Discussed in Thread: TPS2H000-Q1

Tool/software:

Hi Team,

We are utilizing the two TPS1H100-Q1 Power Switch IC in our project, and we have set the CL resistance to 5mA and 40mA with a 24V supply.

We tested the board and discovered that we could not obtain the necessary 5mA & 40mA output current and output voltage dropping to 12V.

We also discovered in one of the forums that this IC is experiencing a problem with lower output current, please find the attached schematic and let us know if you have any suggestions.

3 months ago

0 Rishika Patel 3 months ago

TI__Expert 8021 points

Hi Lokesh,

The current limit cannot be set to 5/40mA.

What is on the load when you are doing this test?

Can you please provide a link to the other forum that you are referring to?

Best Regards,

Rishika Patel

0 Lokesh Nelavalli 3 months ago in reply to Rishika Patel

Prodigy 90 points

Hi Riishika,

The below are the fourm LInks

TPS1H100-Q1 External Current Limit Accuracy - Power management forum - Power management - TI E2E support forums

TPS1H100-Q1: TPS1H100-Q1 External current limit Inquiry - Power management forum - Power management - TI E2E support forums

Yesterday, We performed a test using load resistors. The input supply voltage was 24V, and the output currents were 5 mA and 40 mA. Based on these values, we selected appropriate load resistors 4.8K and 600 ohm.

Can you provide details about the TPS2H000-Q1 IC and Specifically, what are the minimum and maximum output current limit supported by this device?

Regards,
Lokesh

0 Rishika Patel 3 months ago in reply to Lokesh Nelavalli

TI__Expert 8021 points

Hi Lokesh,

The current limit for the TPS1H100-Q1 is recommended to be set at a minimum of 0.5A.

The current limit for the TPS2H000-Q1 is recommended to be set from 0.05-0.9A. Please see below.

The IC/ICL pin is not designed to be set to limit currents lower than the stated minimum in the external current limit accuracy specification. Please set the current limit to within the recommended range and let me know if the output voltage is able to reach 24V not 12V as you observed previously.

Best Regards,

Rishika Patel