TPS5450: bundling the two outputs

shinji-ota

Prodigy 10 points

Part Number: TPS5450
Other Parts Discussed in Thread: LM61480

Is it possible to double the current capacity by bundling the two outputs of TPS5450?

Many LEDs have a common Anode, which requires a large current.

Please give me advice.

10 months ago

0 shinji-ota 10 months ago

Prodigy 10 points

Postscript.

The TPS5450 datasheet states that the maximum output current of the DCDC circuit is 5A, but we would like to use it in a configuration where two DCDC circuits are connected in parallel because we need a load current of 6A/7V.
The circuit is shown below.
circuit

+1 Henry Kou 10 months ago in reply to shinji-ota

TI__Expert 3766 points

Hi Shinji-Ota,

This is not an efficient solution and I do not recommend tying together the outputs for this device because of conflicting beat frequencies in the output ripple. We do offer some higher IOUT capable devices, like LM61480 which can provide a smaller solution size and meet your load requirements.

Regards,

Henry

0 shinji-ota 10 months ago in reply to Henry Kou

Prodigy 10 points

Hi Henry,

Thanks for the reply.
I will look for another IC with higher current capacity.

0 Henry Kou 10 months ago in reply to shinji-ota

TI__Expert 3766 points

Thanks, closing this thread.

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TPS5450: bundling the two outputs