5.15 Dual Rail Operation with Droop Control

Input Voltage = 800V, Output voltage reference from PBV = 14V

Table 5-5. Output Voltage with Droop Control vs Output Current
Output Voltage (V)	Output Current (A)	PBV Rail-1 Output Current (A)	PBV Rail-1 Output Current (A)	Output Power (W)
13.81	90	46	45	1243
13.69	130	67	66	1780
13.54	170	87	87	2302
13.41	210	109	107	2816
13.3	250	130	130	3325
13.15	290	150	150	3814
12.99	340	175	175	4417

Figure 5-37. Individual Rail Current vs Total Output Current

Figure 5-38. Output Voltage vs Output Current

Test Results:

Output voltage reference was set at 14V from the Power Board Visualizer. Droop control drops the internal output voltage reference based on output current. A maximum power of 4417W was delivered for > 10 seconds at 13V @ 340A, with equal output currents of 175A on each rail.