WEBENCH® Tools/BQ24773: BQ24773 not working on default configuration ..?

Hey Rahul,

Can you provide a schematic for this? 

When you say the system does not operate, do you mean the system voltage is low? Can you measure the voltage on the SRP node during the failed condition?

Does VCC-BAT voltage meet the SLEEP COMPARATOR (VCC_BAT) requirements? Does adapter type (4) @ 24Vin have issues?

Regards,

Joel H

Hello Joel, 
                 I am sharing the video of my system boot up problem, i think it 's helps you understand  the issue

In video, 

1. It's Try to Boot up without configuration by host controller, which i need to resolve (In this case BQ24773 need to Run with default setting right..?) 

Observe the ACT Green LED on Raspberry PI, It's try to Boot system but failed every time  

Default Configuration is,

The Reset Button press on Arduino to Configure the BQ24773 

2. When system is Configure By Arduino It's work Properly, Configuration set same as Default Not changing anything (Work Properly)

Observe the ACT Green LED on Raspberry PI, After the system Boot-up is completed it's stable down also check WIFI by SSH and all other services also work properly 

Can you provide a schematic for this? please check the attachment 

Thanks and Regards, 
Rahul Surawase

Hey Rahul,

Your video did not load properly into our e2e thread. Can you either provide a link or re-embed the video?

And I know you provided the configuration registers, but have you also read the device registers back before and after writing.

There a few assumptions you make that are incorrect about the default settings of the charger.

1) By default, the MaxChargeVoltage() register is set to 4.208V, not 4.4V for the 1S CELL setting.  

2) By default, the EN_AUTOWAKEUP bit is enabled, which supplies a 128mA current if the battery voltage is <3V for the 1S CELL setting. This could mean that the ChargeCurrent() register is not 0mA by default, which depends on your battery voltage for your tests.

3) The above condition (2) also would determine what the SYS voltage is when the adapter is applied. When charging is enabled and the battery voltage is < the minimum system voltage setting, the system voltage will sit at the register setting. When charging is disabled, the system voltage will climb to the maximum voltage of 4.4V for the 1S case. 

Regards,

Joel H

Hello Joel, 

                  We want to resolve this issues as early as possible , can you please arrange any Local technical person to figure out the issues because it's take too much time on Forum
We are from India, Maharashtra, Pune- 411021,Phynart Technologies for more details visit

 have you also read the device registers back before and after writing   Yes, We read Device register before and after which I share above is same results

1) By default, the MaxChargeVoltage() register is set to 4.208V, not 4.4V for the 1S CELL Means, If the Cell is present and it's below the 3V then auto wakup enable and charge current is set to 128mA and charge voltage is 4.2 Right ...? but we testing it without cell that's why it's shows 4.4V and charge current is 00 in default  which makes charge disable

3) The above condition (2) also would determine what the SYS voltage is when the adapter is applied. 4.4V, when Adapter is applied(ON) SYS Voltage is 4.4V and again there is No battery present in this case When charging is disabled, the system voltage will climb to the maximum voltage of 4.4V for the 1S case. Yes, right.

we want to show that system is configuration done indication to developer, How it is possible to provide it ..?

Please follow the below link for the Video 

drive.google.com/.../view

Thanks and Regards, 

Rahul Surawase 

Phynart Technologies Pvt.Ltd

Email-rahul.s@phynart.com

Contact No. +91 8856061494

Hey Rahul,

Even if there is no battery present, the MaxChargeVoltage() register defaults to 4.2V, not to 4.4V. That is why I asked if you read the registers before and after writing the settings?

I suggest you use a BQ24773EVM an test in parallel. Make all the modification to match your board (specifically the CELL pin connection to GND and the ACDET resistor divider). You can likely leave everything else the same.

And you can do two things: 

With your custom board: Use the EV2400 communication device and tap into the I2C lines of your board and use BQStudio to monitor/program the settings.

With the EVM, use your Arduino/Raspberry Pi and apply the same loads to the EVM and see if you have the same issue. 

Regards,

Joel H

Hello Joel, 

      We require to generate Notification and Indication for BQ24773 configuration Done, we not find any PIN or register setting get this information can you please help In this

We want to resolve this issues as early as possible , can you please arrange any Local technical person to figure out the issues because it's take too much time on Forum  

Please Describe advantage and application of EV2400. 

Thanks, 

Rahul