BQ78350-R1: How to use BQ78350-R1

Miles Li1

Intellectual 1640 points

Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQ40Z50-R1, BQ40Z80

Hi ,

I have some questions that described as below:

1. What is CEDV?

2. Does BQ78350-R1 need to accompany AFE? Why? What is its difference between it and other gauge?

over 5 years ago

0 David Hien over 5 years ago

TI__Genius 10830 points

hi Miles,
1. Please find more info on CEDV vs. IT on this previous E2E post

2. As per the section 8.1 of the BQ78350-R1 datasheet: "

The bq78350-R1 Li-Ion and LiFePO4 Battery Management Controller is the companion to the bq769x0 family of Analog Front End (AFE) protection devices. This chipset supports 3-series to 15-series cell applications with capacities up to 320 Ah, and is suitable for a wide range of portable or stationary battery applications. The bq78350-R1 device provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as the cell balancing algorithm and a full range of voltage-, current-, and temperature-based protection features."

0 Miles Li1 over 5 years ago in reply to David Hien

TI__Intellectual 1640 points

HI David,

Good to receive your reply. As you says, the bq78350-R1 device can act as state-of-health (SoH) monitor, so it should not need AFE anymore. Am I right?

0 David Hien over 5 years ago in reply to Miles Li1

TI__Genius 10830 points

Miles,
If you look at a gauge like BQ40z50-R1 or BQ40z80, they are gauges which integrate the AFE.
BQ78350-R1 doesn't integrate the AFE and requires the V / I / T data measured by the BQ769x0 AFE to calculate & report the SOC / SOH...

0 Miles Li1 over 5 years ago in reply to David Hien

TI__Intellectual 1640 points

Hi David,

Thanks!

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BQ78350-R1: How to use BQ78350-R1