TPS40060 maximum output

masaya hagiwara

Intellectual 740 points

Other Parts Discussed in Thread: TPS40060EVM

I want to teach the questions.

We test under the following conditions

But output voltage is dropout.(12Vout→5Vout）

1.Output possible? Under the following conditions:

Vin 12.5V

Vout12V±10%

Iout:(min)0A/(typ)0.53A/(max)/2.51A

2.If No.1 question is possible. Please teach us recommend peripheral circuits..

【TPS40060EVM use

Ch1：Setting　Vin12.5V→Vout12VIout0A

Ch2：Measured value　Vin12.5V　Vout12V Iout0A

Ch3：Switching Waveform】

【TPS40060EVM use

Ch1：Setting　Vin12.5V→Vout12VIout0.53A

Ch2：Measured value　Vin12.5V　Vout5V Iout0.53A

Ch3：Switching Waveform】

【TPS40060EVM use

Ch1：Setting　Vin12.5V→Vout12VIout2.51A

Ch2：Measured value　Vin12.5V　Vout5V Iout2.51A

Ch3：Switching Waveform】

over 9 years ago

0 Alex Triano over 9 years ago

TI__Genius 12380 points

Hi Masaya,

I am not from this product's team, but I believe that these Wide VIN devices are optimized and meant to be used for lower duty cycles (such as from 10V down to 3.3V).

Running this part from 12.5V to 12V and at high currents does not seem like its intended use. Perhaps the efficiency is too low at max duty cycle and is causing it to drop lower.

Additionally, the EVM was designed for 3.3V out, so if you are switching to 12V you may have to change the compensation circuit aside from just the feedback resistors.

I would ask, what is your application / power requirements and perhaps we have a device better suited for that application.

Thanks!

Alex

0 masaya hagiwara over 9 years ago in reply to Alex Triano

Intellectual 740 points

Alex san

Thank you very much for your reply.

①Additionally, the EVM was designed for 3.3V out, so if you are switching to 12V you may have to change the compensation circuit aside from just the feedback resistors.

I would ask, what is your application / power requirements and perhaps we have a device better suited for that application.

→　　Application　is Blu-ray recorder.

　　　　power requirements is Motor Drive.