UC2902
FEATURES
D 2.7-V to 20-V Operation D 8-Pin Package D Requires Minimum Number of External ponents
D patible with Existing Power Supply
Designs Incorporating Remote Output Voltage Sensin
D Differential Share Bus D Precision Current Sense Amplifier (40 Gain) D UVLO (Undervoltage Lockout) Circuitry D User Programmable Share Loop pensation
APPLICATIONS
D Paralelled Power Supplies
DESCRIPTION
The UC3902 load share controller is an 8-pin device that balances the current drawn from independent, paralleled power supplies. Load sharing is acplished by adjusting each supplies’ output current to a level proportional to the voltage on a share bus. The master power supply, which is automatically designated as the supply that regulates to the highest voltage, drives the share bus with a voltage proportional to its output current. The UC3902 trims the output voltage of the other paralleled supplies so that they each support their share of the load current. Typically, each supply is designed for the...
