Battery Chargers Offer Constant Current Programmability

Sept. 1, 1998
Configured to create a constant- or programmable-current/constant-voltage battery charger, the LT1513 and LT1513-2 500-kHz current-mode switching regulators provide constant-current and constant-voltage battery charging in flyback or SEPTIC

Configured to create a constant- or programmable-current/constant-voltage battery charger, the LT1513 and LT1513-2 500-kHz current-mode switching regulators provide constant-current and constant-voltage battery charging in flyback or SEPTIC (Single-Ended Primary Inductance Converter) topology, where the input voltage can vary above and below the battery voltage. The devices can charge single-cell as well as multi-cell batteries at voltages up to 25V for a 15V input. The 1513-2 IC can switch from a constant-current charge to a trickle charge, allowing a peak charge condition to be achieved in nickel-based batteries. Charging current is easily programmed with a dc voltage source or equivalent PWM signal. The device regulates at 0 mV at the IFB pin to provide a programmable current limit over a wide range. The LT1513 boasts a 1% accuracy in constant voltage mode and is suited for charging lead-acid or Li-ion battery systems.

Company: AMERICAN POWER CONVERSION

Product URL: Click here for more information

About the Author

Staff

Articles, galleries, and recent work by members of Electronic Design's editorial staff.

Sponsored Recommendations

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!