| Isolated DC-DC 7W |
| This Isolated DC-DC converter is designed to accept from 48V - 350V DC input and provide a 12V supply for E-meter use. It can be connected to the battery pack indefinitely, and because of its low standby power, consumes very little power from the battery pack. This is accomplished by the control IC cycle skipping, providing just enough power to maintain the output voltage under light load conditions (when the E-meter sleeps). The fully integrated control IC allows a small PCB size with minimal external components, enhancing reliability. As of 3/9/07, testing has been done on the first unit: Input Range: 72VDC - 300VDC Idle current: 3.8mA - 0.92mA (No Load) Idle Power: 0.253W - 0.276W (No Load) Efficiency: 87% - 85% (@ 5.6W out) Power out: 0 - 5.6W More testing to do: Full load current, 300V - 380VDC; (48V-72V output power available). The transformer is not my own design, so I will have to investigate the reason for lower power available at lower Vin (<72V). The enclosure is a plastic case 4"W x 3"L x 1.65"T Click here for Installation Manual Target Price: $28 (low volume production) |
