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SM3320-BATT-EV-NOPB データシート(PDF) 3 Page - Texas Instruments

部品番号 SM3320-BATT-EV-NOPB
部品情報  AN-2121 SolarMagic??SM3320-BATT-EV Charge Controller Reference Design
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ホームページ  http://www.ti.com
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Charging Profile
1
Charging Profile
Figure 1 shows the lead-acid charging profile used in this reference design.
If the battery voltage is very low, a slow charge current is applied and limited until the voltage rises above
a pre-set threshold value Vt. The full charge current is then applied. Once full charge is detected on the
voltage of the battery, the system switches to a floating charge and maintains the battery voltage at a fixed
threshold. At any time, the system will run in MPPT mode if the available power is lower than the power
required to achieve voltage or current regulation.
Figure 1. Lead-Acid Charging Profile
2
Features
12V Lead Acid Battery
Vin range = 15V to 45V Vmp (50V Voc)
Max Input Current: Isc = 11A
MPPT algorithm for optimized photovoltaic applications
Up to 9A charging current
Reverse current protection
Trickle charge and fast charge mode
Up to 98% converter efficiency
14.2V max charge voltage, 13.5V floating voltage
Output voltage set-points can be re programmed
3
SNOSB76C – December 2010 – Revised May 2013
AN-2121 SolarMagic™ SM3320-BATT-EV Charge Controller Reference
Design
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Copyright © 2010–2013, Texas Instruments Incorporated


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