Yaohua DY XXDXX-3W series product technical manual, this product has the characteristics of small volume, high efficiency, high isolation voltage, high reliability, low price, suitable for digital signal processing circuits and analog circuits with low voltage stability requirements, especially suitable for distributed power supply systems and small power supply power supply circuits.
The DY XXDXX-3W series from Yaohua are isolated, fixed‑voltage DC‑DC converters with small size, high efficiency, high isolation voltage and low cost. They are suited for digital signal processing circuits, low‑precision analog circuits, distributed power systems and low‑power applications.
The manual provides electrical parameters, recommended load conditions, protection guidelines, and design tips such as ripple reduction, parallel operation, and polarity protection. It also includes recommended LC filter values for various input and output voltage options. This manual is written in Chinese.
| Insulation Strength | 7000 VDC |
|---|---|
| Operating Temperature | -40 °C to 55 °C |
| Input Voltage Types | 5 V, 12 V, 15 V, 24 V DC |
| Input Voltage Tolerance | ±10 % |
| Full Load Output Power | 3 W |
| Output Voltage Types | 5 V, 9 V, 12 V, 15 V DC |
| Load Regulation | 10 % max |
| Ripple and Noise (20 kHz BW) | ≤80 mV‑p‑p |
| Efficiency (5 V output) | 80 % typical, 75 % min |
| Efficiency (9‑15 V output) | 85 % typical, 80 % min |
For long‑term use, keep the load between 30 % and 80 % of full load; if the circuit is often idle, add a constant load of about 20 %.
Add an output filter capacitor not exceeding 10 µF, or insert an inductor with a small capacitor; refer to the table for suitable component values.