PS501 datasheet(15/42 Pages) MICROCHIP

Part #	PS501

Description	Single Chip Field Reprogrammable Battery Manager

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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15 / 42 page

 2004 Microchip Technology Inc.

DS21818C-page 15

PS501

FIGURE 6-1:

CELL BALANCING

Cell balancing: entry from main

Charging

Set Appropriate Cell Balancing

(ADCON1) per Active Balance

flags (1 to 3)

Set flag_cell_balance_on = 1

YES

Set Appropriate Cell Balance

flag(s) to Balance during Charge

(3 maximum)

Set All Cell Balance flags OFF

Set flag_cell_balance_on = 0

SOC <

r_e_imbalance_SOC (%)

Any VCELL Delta

> r_e_vcell_imbalance_set

YES

Any VCELL balance

flags set ?

This algorithm makes the imbalance determination on the discharge cycle near EOD and uses the entire charge

cycle for balancing (good for low balance currents)

exit back to main

YES

flag_cell_imbalance_on

set ?

Any VCELL delta

> r_e_vcell_imbalance_reset

YES

Force ADCON1 CB bits to 0

(no balancing during discharge)

YES

PS501 Datasheet(PDF) 15 Page - Microchip Technology