BQ25606: Boost

Chen Melina

Part Number: BQ25606

Now why doesn't VBUS output 5V voltage?Are there any other Settings you haven't noticed? Please give me some Suggestions.thank you

over 5 years ago

0 Jeff F over 5 years ago

TI__Guru**** 165886 points

Hi Chen,

BQ25606 enters boost mode and can provide up to 1.2A after startup if

1.BAT above VOTG_BAT

2. VBUS less than BAT+VSLEEP (in sleep mode)

3. Boost mode operation is enabled (OTG pin HIGH)

4. Voltage at TS (thermistor) pin as a percentage of VREGN is within acceptable range (VBHOT < VTS < VBCOLD)

5. After 30-ms delay from boost mode enable

Is there voltage still applied at VBUS? Is there a heavy load at VBUS?

Regards,
Jeff

0 user6288729 over 5 years ago in reply to Jeff F

Prodigy 30 points

Hi Jeff:

No voltage applied to VBUS, no load at VBUS.

thanks

Regards,
Jim.zhu

0 user6288729 over 5 years ago in reply to Jeff F

Prodigy 30 points

Hi jeff:

No voltage applied to VBUS, no load and be floating

Regards,
Jim.zhu

0 Jeff F over 5 years ago in reply to user6288729

TI__Guru**** 165886 points

Hi Jim,

After re-reviewing the schematic, I only see 100nF capacitor on REGN. The minimum recommended capacitance for REGN is 4.7uF. If not installed, can you install and retry?

Regards,

Jeff

0 user6288729 over 5 years ago in reply to Jeff F

Prodigy 30 points

Hi Jeff:

Thanks for giving me many suggestions,After I disconnected the VBUS peripheral circuit, the BOOST function worked normally, and VBUS also had 5.1V output.

Regards,

Jim.zhu

Thanks again

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BQ25606: Boost