The DKPower DK910 is a 10 W primary‑side feedback AC‑DC switching regulator chip with integrated 700 V high‑voltage MOSFET, built‑in PWM, and protection…
The DK910 is a primary‑side feedback AC‑DC switching regulator chip designed for 10 W output power. It integrates a 700 V high‑voltage MOSFET, peak‑current detection, PWM oscillator with spread‑frequency, and multiple protection functions such as over‑temperature, over‑current, over‑voltage, and short‑circuit protection. The chip operates from a wide input voltage range of 85 V to 265 V and requires few external components, simplifying transformer design.
Typical applications include LED power supplies, adapters, and small household appliances such as microwave ovens, air conditioners, DVD players, and set‑top boxes. The pinout consists of eight pins (IS, GND, FB, VCC, OC, etc.) providing functions for current setting, grounding, feedback, supply, and MOSFET drain connections. Package options are SOP‑8 with dimensions shown in the datasheet. This manual is written in Chinese.
| Input voltage range | 85 V – 265 V |
|---|---|
| Integrated high‑voltage MOSFET rating | 700 V |
| Peak current limit | 900 mA |
| Operating frequency | 16 – 80 kHz |
| Voltage accuracy | ±3 % |
| Total power dissipation | 800 mW |
| Operating temperature range | -25 °C to 135 °C |
The DK910 accepts an input voltage from 85 V up to 265 V.
Yes, it provides over‑temperature, over‑current, over‑voltage, and output short‑circuit protection.
The DK910 comes in an 8‑pin SOP package; pins include IS for peak‑current setting, GND for ground, FB for feedback, VCC for supply, and OC for the MOSFET drain.
Typical applications are LED power supplies, adapters, and small appliances such as microwave ovens, air conditioners, DVD players, and set‑top boxes.