DC787A-B

DC787A-B is a demonstration circuit featuring the LTC4252C-2 hot swap controller in an AdvancedTCA application. The DC787A-B uses LTC4252C-2 with auto retry. Included on-board is the connection sense circuitry, zero volt transient reservoir capacitor management, opto isolator to drive a 1mA-input 48V brick, input clamping and snubbing, thermal layout for ORing diodes, input and return fuses, LEDs to indicate the presence of various voltages and signals, high voltage layout rules and printed nomenclature to facilitate integration into a working system. A distinct line of demarcation runs the length of the board, separating high voltage -48V referred potentials from return. Thermal layout around the ORing diodes achieves adequate cooling without the need for connector mass, air flow, or heat sinks. 93mil turret holes accommodate up to 12 gauge wires for in-situ testing.

• 48V nominal input voltage, 100V maximum input voltage
• 5.6A minimum output current
• 32V minimum shutdown voltage at Iin<10mA, excluding LED current