Recommended boost DCDC converter

Shuji Ishiwata

Other Parts Discussed in Thread: TPS61236P, TPS61235P, TPS61022

Hi All,

We are looking for a product with ripple noise of 100 mVpp or less under all load conditions, including the following conditions.

Input Voltage: 2.9-4.3V
Output Voltage: 5.1V
Output Current: 0-3A
Input current with no load: 50uA or less

Please tell me the recommended product.

Best Regards,
Ishiwata

over 3 years ago

+1 Farheen over 3 years ago

TI__Mastermind 20470 points

Hello Ishiwata,

BSR team supports the buck converters only. For any query related to boost converter, you have to choose the different organization (BCS team).

Thanks and Best Regards,

Farheen

0 Shuji Ishiwata over 3 years ago in reply to Farheen

Mastermind 7755 points

Hello Farheen,

Thank you for your reply.

Best Regards,
Ishiwata

0 Shuji Ishiwata over 3 years ago in reply to Shuji Ishiwata

Mastermind 7755 points

Hello Farheen,

Excuse me, can I ask you one?
Which forum should I post to the BCS team?
Or could you introduce this post to the BCS team?

Best Regards,
Ishiwata

0 Farheen over 3 years ago in reply to Shuji Ishiwata

TI__Mastermind 20470 points

Hello Shuji,

I am moving it to right organization [BMC] BMC-BCS.

Thanks and Best Regards,

Farheen

0 Wenhao Wu over 3 years ago in reply to Farheen

TI__Genius 9046 points

Hi Shuji,

Please consider TPS61022, TPS61235P or TPS61236P. I would assume input current with no load to be quiescent current. Thanks!

-Wenhao

0 Shuji Ishiwata over 3 years ago in reply to Wenhao Wu

Mastermind 7755 points

Hi Wenhao,

Thank you for your reply.
A customer commented that the product introduced could not be used because the delay time in PFM mode is unknown.

Below, the past E2E
e2e.ti.com/.../3932782

Do you have any other recommended products? I look forward to your support.

Best Regards,
Ishiwata

0 Wenhao Wu over 3 years ago in reply to Shuji Ishiwata

TI__Genius 9046 points

Hi Ishiwata-san,

As I have replied in the E2E post, even though customer knows one delay in one device. This means nothing, as delay time has variations and it does not have intuitive impact on output ripple in PSM. Because it is ripple voltage which customer real cares about, so we simulate the ripple to be 30mV-50mV under recommend conditions for TPS61022.

Why does customer has concern if they have well designed under our recommended operation conditions? If 30mV-50mV is still unacceptable, then they should have same problem even in CCM as Boost converter's output voltage ripple increases as load increase.

I can recommend a more suitable device with more information. Would you please share me more information from customer's EE? What is their volume per year and end equipment, what is the input and output voltage/current and what load it is going to support?

-Wenhao

0 Shuji Ishiwata over 3 years ago in reply to Wenhao Wu

Mastermind 7755 points

Hi Wenhao-san,

Thank you for your reply.
We apologize for the delay in contacting you.

I am currently checking customer information.
If you can confirm it, we will give you feedback.
In that case, we will contact you with customer information by private message.

Best Regards,
Ishiwata

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Recommended boost DCDC converter