YDC-304 Series Four-Channel DC Power Supply

On the YDC-304, a numeric keypad and knob enter voltage and current set points, and a compensation function keeps output voltage accurate. Programmed YDC-304 list-sequence output runs stepped test profiles, nine preset memories hold repeated production settings, and an intelligent temperature-controlled fan keeps cooling quieter.

Four rails from one chassis

The YDC-304 suits stations that power several sub-assemblies of one DUT at once, or several identical DUTs in parallel test positions. Each output is isolated from the others and set independently, so rails with different references can be supplied without a shared return. The model number carries the rating: in YDC-30488-80-11, “304” is the four-channel series, “88” is the per-channel power divided by ten (880 W), and “80-11” is the per-channel maximum of 80 V and 11 A. Rated power equals maximum voltage times maximum current in every model, so pick the model whose voltage and current both cover the largest rail.

YDC-304 ratings in the model table apply to each output. All four channels of a YDC-304 model carry the same voltage, current and power rating, so a model is chosen by its largest rail.

For every model, load regulation and line regulation share the same figures. Voltage regulation is ≤ 0.1% + 20 mV on the two 30 V models, ≤ 0.1% + 15 mV on YDC-30490-60-15, ≤ 0.1% + 25 mV on YDC-30490-15-60 and ≤ 0.1% + 10 mV on the 60 V / 10 A, 80 V and 150 V models. Current regulation is ≤ 0.1% + 5 mA throughout, except ≤ 0.1% + 8 mA on YDC-30490-15-60.

Accuracy at real set points

YDC-304 setting and readback resolution are 1 mV and 1 mA, while accuracy at 25 °C ±5 °C is ≤ 0.1% + 10 mV and ≤ 0.3% + 10 mA. For a YDC-30490-15-60 output set to 40 A, the current accuracy limit works out to 130 mA; for a 12 V set point, the voltage limit is 22 mV. Where acceptance limits are tighter, verify with an external calibrated meter.