BQ24610EVM: Powering up the BQ24610EVM

Asif Al Noor

Part Number: BQ24610EVM

Hello,

I just received the BQ24610EVM board for the first time. I'd like to follow the datasheet in figure 1 to connect a DC input power (power supply #1 in the fig) to an electric load (load #1 in the fig) without connecting a battery (load #2 in the fig). Keeping the same configuration the same as the figure, can I connect 24V DC power on the J1 ACPWR input, 1.8V DC on the J4 TS input, and the electric load in a constant current mode in J5 VSYS? This configuration is not working - power supply #1 keeps turning on and off; I am not sure there is a short circuit somewhere.

To summarize, how can I connect a basic 24V DC power supply in the input and receive that current on Load#1 while the battery is disconnected?

over 2 years ago

0 Michael Emanuel35 over 2 years ago

TI__Mastermind 34495 points

Hello,

Can you please capture a waveform of the input voltage, PH voltage, VBAT voltage, and SYS voltage when this is happening? Also, what are your jumper settings?

Regards,

Mike Emanuel

0 Asif Al Noor over 2 years ago in reply to Michael Emanuel35

Prodigy 10 points

Thank you for your prompt response. I will check the waveform. However, I am a bit confused about the setup procedure described in the datasheet: bq2461x/bq2463x (HPA422A) Multi-Cell Synchronous Switch-Mode Charger (Rev. A).

in procedure 3.4.1, both PS#1 and PS#2 are expected to be powered at 0 ± 100mV (as described in section 3.3). How would these following voltages (in section 3.4.1 step2) appear if the DC voltages are mili volts? Also, are these voltages still valid if I do not connect the battery in J5(BAT)?

Measure → V(J5(SYS)) = 0 ± 500mV Measure → V(TP(VREF)) = 0V ± 1000mV Measure → V(TP(REGN)) = 0V ± 500mV

0 Michael Emanuel35 over 2 years ago in reply to Asif Al Noor

TI__Mastermind 34495 points

Hello,

This is just the beginning of the test procedure. Section 3.4.2 will verify the regulation voltage and Section 3.4.3 will verify the charge current. For 3.4.1 Load #2 or the battery is turned off.

Regards,

Mike Emanuel

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BQ24610EVM: Powering up the BQ24610EVM