DC2315A-A

DC2315A-A is a demonstration circuit featuring the LTC4235-1, dual 12V ideal-diode OR and single Hot Swap™ controller with current monitor. The controller operates in redundant 12V supply circuits, where each rail has an individual ideal diode, and the outputs are connected to load through a single Hot Swap™ circuit. The controller enables monitoring of the load current by providing a signal that is 100× the sense resistor voltage. The DC2315A allows verification of the LTC4235 Hot Swap™ and ideal diode functionality during individual rail ramp-up and ramp-down events, during power supply switchover, in steady state, in overcurrent fault conditions. The DC2315A is configured for 12V operation with a 9A max current load. The main board components are LTC4235 controller, 2 power MOSFETs functioning as ideal diodes and 1 power MOSFET controlled as Hot Swap switch, 2 jumpers for enabling second ideal diode and HotSwap, two LEDs to indicate PWRGD and fault conditions, seven banana jacks.

• 9V to 14V input supply range
• 9A typical board current limit at 11V output
• 3.3A typical current limit at 0V output
• 4.5V to 5.5V internal regulator voltage
• 2mV to 28mV forward regulation voltage (VINn – VSENSE+)
• 10V to 14V external N-channel gate drive (VDGATEn – VINn) at ∆VFWD = 0.15V, I = 0, -1μA
• Latch-off overcurrent fault response