Texas Instruments Inc. (TI, Dallas, TX) announced two new hot-swap power managers for use in nominal -48V systems, the TPS2392 and TPS2393, which allow precise control of current and voltage during turn-on and operation, and are suitable for -48V distributed power systems, central office switching, optical networking systems and wireless base stations.
The TPS2392 and TPS2393 power managers operate with supply voltages ranging from -20V to -80V, and are rated to withstand spikes to -100V. Combined with an external, n-channel, field-effect transistor and sense resistor, the power managers can be used to enable live insertion of plug-in cards and modules in powered systems. Each device provides load-current slew-rate control and peak magnitude limiting.
The TPS2392 and TPS2393 are priced at $1.95 per 1,000 units.
