TPS552892-Q1: Efficiency plots

Zeming Kong

Part Number: TPS552892-Q1

Hi team,

My customer wants to know the efficiency plot@ fSW=2MHz, we only have plots @ fSW=400kHz.(fig6-1~fig6-6)

Best,
Zeming

0 Bryce Xun over 2 years ago

Hi Zeming,

May I know what is the customer and their application here?

What is the input voltage range, output range and max output current?

BRs,

Bryce

0 Zeming Kong over 2 years ago in reply to Bryce Xun

Hi Bryce,

VIN=5V~35V, VOUT=12V, IOUT=1.5A max

Also the customer found the junction temp is much higher than expected when testing the proto board. What may be the cause?

Best,
Zeming

0 Bryce Xun over 2 years ago in reply to Zeming Kong

Hi Zeming,

The efficiency is about 87.9% at 5Vin, 12Vout, Iout=1.5A.

The efficiency is about 92.3% at 18Vin, 12Vout, Iout=1.5A.

The efficiency is about 85.8% at 36Vin, 12Vout, Iout=1.5A.

Do you have the schematic and layout of this project? Is the pcb 2layer or 4layer?

BRs,

Bryce

0 Zeming Kong over 2 years ago in reply to Bryce Xun

Hi Bryce,

Thanks for your answer. Could you provide the curve of the efficiency?

I am asking for the schematic and the layout.

Best,
Zeming

+1 Bryce Xun over 2 years ago in reply to Zeming Kong

Hi Zeming,

Thanks for feedback, let's continue to talk on email.

BRs,

Bryce

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