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- ZH
- Last added
- 2026-10-01
Featured DKPower manuals
DKPower DK5V45R20 High‑Performance Two‑Pin Synchronous Rectifier Chip Datasheet
The DK5V45R20 is a simple, high‑efficiency synchronous rectifier chip that integrates a 45 V, 20 mΩ NMOS transistor. It requires only two pins (A and K) that correspond to the anode and cathode of a Schottky diode, eliminating the need for external components and reducing conduction loss.
The device operates with a self‑powered system, providing start‑up voltage (VCC_ON) of 7.6 V and shut‑down voltage (VCC_OFF) of 3.5 V. It is suitable for flyback (PSR, SSR) applications such as USB chargers, adapters and LED drivers, and can be used in DCM & QR modes. The chip is supplied in an SM‑7 package compatible with TO‑277. This manual is written in Chinese.
Covers: Product Overview · Main Features · Typical Applications · Pin Configuration · Absolute Maximum Ratings · Electrical Characteristics
DKPower DK910 10W Primary‑Side Feedback AC‑DC Converter Chip Datasheet
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.
Covers: Product Overview · Pin Description · Electrical Parameters · Functional Description · Protection Features · Typical Application Circuits
Latest DKPower manuals
DKPower DK5V45R20 High‑Performance Two‑Pin Synchronous Rectifier Chip Datasheet
Datasheet 8 pages · 1.1 MB · ZHThe DK5V45R20 is a two‑pin synchronous rectifier chip with integrated 45 V NMOS, ultra‑low VF and high efficiency for USB chargers, adapters and LED drivers.
DKPower DK910 10W Primary‑Side Feedback AC‑DC Converter Chip Datasheet
Datasheet 8 pages · 989 KB · ZHThe 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…
Which document do I need?
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in DKPower manuals
What package does the DK5V45R20 use?
The chip is supplied in an SM‑7 package that is compatible with the TO‑277 package.
From: DKPower DK5V45R20 High‑Performance Two‑Pin Synchronous Rectifier Chip Datasheet
Can the DK5V45R20 be used in CCM mode?
No, the DK5V45R20 cannot be used in CCM mode; a different version such as DK5V45R20C or DK5V45R20S must be selected.
From: DKPower DK5V45R20 High‑Performance Two‑Pin Synchronous Rectifier Chip Datasheet
What is the input voltage range of the DK910?
The DK910 accepts an input voltage from 85 V up to 265 V.
From: DKPower DK910 10W Primary‑Side Feedback AC‑DC Converter Chip Datasheet
Does the DK910 include built‑in protection features?
Yes, it provides over‑temperature, over‑current, over‑voltage, and output short‑circuit protection.
From: DKPower DK910 10W Primary‑Side Feedback AC‑DC Converter Chip Datasheet