DK106 AC-DC Switch Mode Power Controller IC DIP-8

DK106 AC-DC Switch Mode Power Controller IC DIP-8 is a high-performance offline switching power supply control chip specifically designed for low-power AC-DC conversion applications. This integrated circuit combines a pulse width modulation (PWM) controller with a high-voltage power BJT, which significantly reduces the total component count for small power adapters. Consequently, designers can achieve a more compact and cost-effective power supply solution without sacrificing reliability. The chip features advanced current mode control and various protection mechanisms to ensure stable operation across varying load conditions. Therefore, you should consider the DK106 for your next power design to simplify the circuit layout and enhance energy efficiency in standby modes.

Key Features:

• Integrated Power BJT: The internal 700V high-voltage power transistor eliminates the need for an external switching element, saving valuable PCB space.
• Low Standby Power: This controller consumes less than 0.3W in standby mode, meeting modern green energy standards for consumer electronics.
• Internal Self-Start Circuit: The built-in high-voltage start-up circuit facilitates a fast boot time and removes the requirement for external start-up resistors.
• Comprehensive Protection: Includes over-temperature, over-current, and over-voltage protection circuits to prevent damage during fault conditions.
• Frequency Jittering: Incorporates a specialized frequency hopping technique to improve electromagnetic interference (EMI) performance and simplify filter design.

Technical Specifications:

• Input Voltage Range: 85 V_AC to 265 V_AC (Universal Mains)
• Output Power Rating: 6 W (Typical) to 8 W (Peak)
• Switching Frequency: ≈ 65 kHz (Fixed with jittering)
• Internal BJT Breakdown Voltage: 700 V minimum
• VCC Supply Voltage: 4 V to 6 V
• Operating Temperature Range: 0°C to +125°C
• Efficiency: ≥ 75% at full load

Mechanical Specifications:

• Package Type: DIP-8 (Dual In-line Package)
• Mounting Style: Through-hole (THT)
• Case Material: Molded Plastic (UL 94V-0 Rated)
• Lead Material: Solder-plated copper alloy

Dimensions:

• Body Length: ≈ 9.27 mm
• Body Width: ≈ 6.35 mm
• Package Height: ≈ 3.30 mm
• Pin Pitch: 2.54 mm (Standard DIP spacing)
• Row Spacing: 7.62 mm

Pinout and Wiring:

• Pin 1-2 (GND): Connect these pins to the primary side common ground of the power supply.
• Pin 3 (VCC): Connect an external capacitor to this pin to filter the supply voltage for the internal control circuit.
• Pin 4 (FB): Feedback input pin; connect this to the optocoupler to regulate the output voltage.
• Pin 5-6 (OC): Output collector pins; connect these directly to the primary winding of the high-frequency transformer.
• Pin 7-8 (NC): These pins have no internal connection; however, you can solder them to the PCB for improved heat dissipation.

Datasheet Reference:

• Download Dongke Semi DK106 Power Controller Datasheet

Commonly Used in:

• AC-DC Adapters: Providing regulated power for small devices like routers, modems, and set-top boxes.
• Auxiliary Power Supplies: Generating stable internal voltage rails for large home appliances and industrial equipment.
• LED Driver Circuits: Driving low-power LED strings in non-dimmable lighting applications.

Applications:

• Mobile Chargers: Creating compact and lightweight chargers for smartphones and portable electronics.
• Standby Power Modules: Supplying low-power circuitry while the main system remains in sleep mode.
• Smart Home Devices: Powering sensors, smart plugs, and small IoT modules directly from the AC mains.

Equivalent Models:

• DK112: A higher power version within the same family, suitable for designs requiring up to 12W.
• VIPer12A: A popular alternative from STMicroelectronics with similar integration features; furthermore, it follows a similar DIP-8 footprint.
• THX203H: A functionally equivalent switching controller often used in similar low-cost adapter designs.

Package Includes:

• 1 x DK106 AC-DC Switch Mode Power Controller IC DIP-8