TPS552892: Schematic Review Required

Basit Ali Khan

Part Number: TPS552892

Tool/software:

Hi,

Schematic Review required for TPS552892RYQR. The input voltage range is from 5V-28V and output voltage is 5V 4A. Does the following circuit provide the required output parameters?

6 months ago

+1 Mulin Yuan 6 months ago

TI__Genius 14870 points

Hi Basit,

1. Recommend to change R4 to 150kohm in case Vout drop cause EN below UVLO.

2.Make sure rated voltage of C16 is higher than 16V to ensure 2uF effective capacitance with 5V DC bias.

3.If PG and CC function is used, pull up to VCC with 100kohm resistor.

4.Make sure Isat of L1 is larger than 8A.

5.Recommend to reserve RC snubber in SW1 and SW2.

6.Add 2*10ohm+100nF filter in ISN and ISP as below.

7.Please provide output cap part number for loop parameters check.

8.Follow layout guideline.

Regards,

Mulin

0 Basit Ali Khan 6 months ago in reply to Mulin Yuan

Intellectual 370 points

Output capacitor 10TPE220ML (220uF), GRM21BZ71A226ME15L (22uF), CL10A105KB8NNNC (1uF)

+1 Mulin Yuan 6 months ago in reply to Basit Ali Khan

TI__Genius 14870 points

Hi Basit,

Recommend to change R125 to 15kohm and C80 to 10nF.

Regards,

Mulin

Power management

Power management forum

TPS552892: Schematic Review Required