Fixed/ High Frequency DCDC converter (no PFM or disable PFM)

Ryuji

Guru 20090 points

Other Parts Discussed in Thread: TPS62110, TPS62140

Hello,

I'm serching DCDC converter of below conditions.

I can't find device in this condition... Duty cycle or Eco mode is bottleneck in this conditions.

Vin(min)5.5V

Vin(max): 10V

Vout: 4.8V

Iout: 1.5A

Fsw:1MHz ~ 2MHz

No need PFM mode , ECO mode. if we can disable PFM , it is OK.

Could you please kindly let me know the device if there is ?

Best Regards,

Ryuji Asaka

over 12 years ago

0 Chris Glaser over 12 years ago

TI__Guru**** 150650 points

The power quick search at power.ti.com can help you find devices that meet your power needs. It should return the TPS62110 as well as the TPS62140.

The TPS62110's power save mode can be disabled. The TPS62140 uses a new control topology, DCS-Control, which eliminates many of the issues with older power save mode topologies. You can find more information here: www.ti.com/dcs-control

0 JohnTucker over 12 years ago in reply to Chris Glaser

TI__Guru**** 191445 points

Just curious...are there any minimum off time issues? The minimum Vin and 4.8 V output voltage may require high duty cycles.

0 Chris Glaser over 12 years ago in reply to JohnTucker

TI__Guru**** 150650 points

TPS62k devices support true 100% duty cycle mode indefinitely. So, no issues there.

0 Ryuji over 12 years ago in reply to Chris Glaser

Guru 20090 points

Hello,

Thank you for the prompt reply.

I will promote these device.

Best Regards,

Ryuji Asaka

Power management

Power management forum

Fixed/ High Frequency DCDC converter (no PFM or disable PFM)