Advanced 8 pin load share controller, -40°C to 105°C

The UCC29002 device family comprises advanced,

high-performance, low-cost load-share controllers that provide all necessary

functions to parallel multiple independent power supplies or DC-to-DC modules.

Targeted for high-reliability applications in server, workstation, telecom, and

other distributed power systems, the controller is suitable for N+1 redundant

systems or high-current applications where off-the-shelf power supplies must be

paralleled.

The BiCMOS UCC29002 is based on the automatic

leader/follower architecture of predecessor UC3902 and UC3907 load-share controllers. The device is capable

of better than 1% current-share error between modules at full load

by using a very-low offset post-package-trimmed current-sense

amplifier and a high-gain negative-feedback loop. With an amplifier

common-mode range of 0V to the VDD supply rail, the current-sense

resistor, RSHUNT, can be placed in either the GND return

path or in the positive output rail of the power supply.