Mobile phone charger

Introduction to Mobile Phone Chargers

Mobile phone chargers convert mains AC power (such as 220V) into low-voltage DC power (5V/9V/12V) compatible with phone batteries. Modern chargers also support fast charging protocols (such as PD and QC) to deliver higher charging speeds.

Main Components

AC-DC Conversion: Transformer, rectifier, and filter circuits convert and stabilize power.
Protocol Chip: Ensures compatibility with fast-charging standards like PD, QC, and PPS.
Switching Devices: MOSFETs, SiC MOSFETs, and IGBTs provide high-frequency switching for compact and efficient charger design.
Housing & Safety Circuitry: Protects against overvoltage, overheating, and short circuits.

Key Parameters

Output Power: Ranges from 10W to 65W+, determining charging speed.
Voltage/Current: Multi-level outputs (5V, 9V, 12V, 20V) ensure device compatibility.
Fast Charging Protocols: Enables high-speed charging when matched with supported phones.

Advantages

High Efficiency: Super-junction MOSFETs and SiC devices minimize losses at high switching frequencies.
Compact Design: Power modules support miniaturization and higher power density.
Reliability: IGBTs and MOSFETs ensure stable thermal performance in continuous use.
Safety: Integrated protections reduce risks of overheating and device damage.

Role of MOSFET, SiC & IGBT Devices

Baoquan Zhijie supplies MOSFETs, SiC MOSFETs, IGBTs, and power modules tailored for charger applications. These devices improve conversion efficiency, reduce heat generation, and enable compact high-power fast chargers.

Why Baoquan Zhijie

What we supply: Discrete MOSFETs, SiC MOSFETs, IGBT modules, and power modules (we do not supply complete chargers).
Device advantages: Low RDS(on), fast switching, low Qg, optimized for high-frequency AC-DC conversion.
Packaging options: TO-220/TO-247, DFN/DPAK, and other compact high-efficiency packages.
Recommended for this application: 600–700V super-junction MOSFETs for primary stages, low-voltage MOSFETs for secondary rectification.