Hello
I have this working on the bench and is looking OK. Can you check a couple of points below.
Noam Levy said: The board does not shift to pre-charge current when simulated battery voltage is low, and max current is about 80% of the calculated…
Hi Bill,
Our side performed the evaluation base on the EVM BQ24450EVM-691.
We doesn't built own circuit yet because we encountered above issue while using the EVM.
Please advice.
Thanks,
Teach Me
Part Number: BQ24450 I need help about SLA battery charger, BQ24450, I modified BQ24450EVM-691 to charge a SLA battery, 4V, 2AH. The charger works good after I changed several resistors. the fast charge current is 700 mA at 4.9V. and the taper/ floating…
I don't find UC2906 and UC3906 EVM that makes more difficult for those NRND parts. Please measure the current sense pin on the IC to IC ground, it is 250mV. I am thinking the charging or load current may go through the sensing line and make the error…
Part Number: BQ24450 Hi TI Experts,
I conduct a study with BQ24450EVM-691 but I fail to fully charge it.
It maintains at 11.65V and 2 days continuously from 11V.
Vin supply: 12V
Battery Charge: 12V Lead acid 7Ah
Below are the parameters i…
Which reference design are you referring to?
Note that the bq24450 now has an EVM orderable for its evaluation: http://focus.ti.com/docs/toolsw/folders/print/bq24450evm-691.html . We have created this EVM for your customer to use for their evaluation…
I would say the functions of UC3906 are same as bq24450. UC3906 is a very old part. bq24450 is a new silicon. Also, bq24450 EVM is avaible.
You can use that EVM as reference to debug your board. The EVM link: http://focus.ti.com/docs/toolsw/folders…
It sounds like there may be a flakey connection on your breadboard. Try ohming out the nodes without power applied to make sure all the resistors in the feedback path are connected. We now have an EVM available that can help you evaluate this IC: http…
