400W Power Supply for LED Displays
The YOUYI YY-D-400-5 is a 5V DC LED display power supply identified as 80A and 400W in both the product listing and linked specification. Fan speed adjusts with power-supply temperature.
The listed protection functions include overvoltage, overcurrent, overtemperature, short circuit and overload. Output resumes after the fault that triggered protection has been cleared.
Specifications and Source Differences
| Parameter | Specification |
|---|---|
| Output voltage | 5V DC |
| Output current | 80A stated maximum in the original listing; 80A rated in the PDF. The original current-range row separately states 0–60A; confirm the applicable load rating. |
| Power | 400W |
| Nominal input | 200–240VAC |
| Input range in PDF | 180–260VAC |
| Input frequency | 47–63Hz |
| Cooling | Fan forced cooling |
| Dimensions (L × W × H) | Original listing: 212 × 85 × 30mm; linked PDF: 219 × 117 × 30mm. Confirm supplied version. |
| Efficiency | Original listing: 86%; PDF: ≥80% at full load. |
| Ripple and noise | Original listing: 100mV; PDF: 150mVp-p at 25°C and 220mVp-p at −25°C. |
| Operating temperature | Original listing: −30°C to +60°C; PDF: −25°C to +60°C. |
Replacement and Installation Checks
Confirm the enclosure dimensions, mounting holes and terminal layout before replacing an existing unit. The source differences above are left explicit rather than combined into one assumed specification. Provide the existing unit’s label and measurements when checking compatibility.
Frequently Asked Questions
Is the YY-D-400-5 a 5V 80A power supply?
Both sources identify 5V, 80A and 400W. The original table also contains a conflicting 0–60A current-range entry, so verify the load rating for the supplied unit.
Can this model run from 110V AC?
The documented nominal input is 200–240VAC. The linked PDF gives a 180–260VAC input range; neither supports a 110V-input claim.
Does the power supply have a fan?
Yes. The product description lists temperature-controlled fan speed, and the cooling mode is fan forced cooling.
Which dimensions should I use for a replacement?
The original listing and PDF show different dimensions. Confirm the supplied unit’s measurements and mounting holes before ordering.
Where is the YY-D-400-5 datasheet?
The original PDF download is retained below. Compare its version and mounting drawing with the actual unit.
Product Photos
