PN8147
Highly integrated flyback controller with built-in 700V MOSFET for 12-24W adapter applications featuring quasi-resona...
Product Overview
Description
The PN8147 is a highly integrated flyback controller with built-in 700V power MOSFET, designed for 12-24W power adapter applications. It features quasi-resonant operation for high efficiency and low EMI.
The device includes comprehensive protection features including OVP, OCP, OTP, and brown-out protection. The built-in frequency dithering function helps reduce EMI, while burst mode operation enables <75mW standby power.
With its high integration level and minimal external components, the PN8147 simplifies power supply design while delivering excellent performance for consumer electronics adapters.
Product Series
PN
Primary Application
Mobile phone chargers
Key Features
- High efficiency and reliability
- Optimized for industrial applications
- Comprehensive technical support
- Available from stock
Specifications
| Input Voltage | 85-265VAC |
|---|---|
| Output Power | 12-24W |
| MOSFET Voltage | 700V |
| Standby Power | <75mW |
| Operating Frequency | 65kHz |
| Package | SOP-7 |
Applications
Mobile phone chargers
Battery and charging management
Power adapters
Electronic system design
Set-top box power supplies
Electronic system design
Small appliance power supplies
Electronic system design
FAE Expert Insights
"The PN8147 is an excellent choice for cost-sensitive adapter applications requiring high efficiency and low standby power. The built-in 700V MOSFET reduces component count and PCB area. In my experience supporting numerous adapter designs, this device consistently achieves >85% efficiency at full load and easily meets <75mW standby requirements. The QR operation significantly reduces switching losses compared to traditional PWM controllers. For optimal EMI performance, pay attention to the snubber design and transformer shielding. Contact our FAE team for design support."
I highly recommend the PN8147 for its proven reliability and excellent performance in real-world applications.
— Senior FAE Team, BeiLuo
Frequently Asked Questions
What is the maximum output power of PN8147?
The PN8147 can deliver up to 24W output power with adequate heatsinking and proper transformer design. Typical applications range from 12W to 18W for universal input (85-265VAC). For detailed specifications and application support on chipown PN8147, refer to the datasheet or contact our team.
For applications >24W, consider PN8148 with higher current MOSFET.
How do I achieve <75mW standby power?
The PN8147 features automatic burst mode operation at light loads. Ensure proper transformer design with low leakage inductance, minimize snubber losses, and use low-ESR output capacitors. For detailed specifications and application support on chipown PN8147, refer to the datasheet or contact our team.
Contact FAE for standby power optimization guidance.
What transformer core is recommended?
For 12-18W applications, EE16 or EE19 cores are commonly used. For higher power up to 24W, consider EE22 or RM8 cores. Use ferrite materials like PC40 or equivalent for good high-frequency performance.
Our FAE can provide detailed transformer design calculations.
Can PN8147 meet ENERGY STAR requirements?
Yes, when properly designed, PN8147-based power supplies can meet ENERGY STAR and DoE Level VI efficiency requirements. The QR operation and burst mode help achieve the required efficiency across load ranges.
Request reference designs certified for ENERGY STAR compliance.
What is the recommended PCB layout?
Keep the MOSFET drain node away from sensitive feedback circuits. Minimize the loop area of the primary switching current. Place the VCC capacitor close to the IC. Use a star ground connection for the primary side.
Request PCB layout guidelines from our FAE team.