In the design of AI glasses in 2025, MOSFET is like a miniature "neural synapse", precisely controlling every detail from display rendering to voice interaction. With the explosion of AR/VR integration and all-weather wear requirements, the selection of power devices directly determines the battery life, heat generation and response speed of glasses. The following is a technical matching solution based on the VBsemi (Micro-Bi Semiconductor) product line, covering the core module requirements:

 1. Power management module: balance between battery life and energy efficiency

Recommended VBsemi models

1. VBQF1306 (30V/5.2mΩ)

1.1. Used for Buck/Boost converter, supports 1MHz high-frequency switching, and is suitable for the lightweight power supply design of glasses.

1.2. Advantages: Qg (gate charge) is only 8nC, and static power consumption is reduced by 37% (compared with mainstream models in 2024).

2. VBL1606 (60V/6mΩ)

2.1. Dedicated battery protection circuit, integrated reverse blocking function to prevent current backflow during charging.

Technical highlights

VBsemi's DFN8(3X3) (chip-scale packaging) series (such as VBQF1306) is only 0.8mm thick, perfectly fitting the internal space limitations of the glasses legs.

2. Display driver module: guarantee of high refresh rate and low latency

Recommended VBsemi models

1. VBQF1202 (20V/3mΩ)

1.1. Dedicated to Micro OLED row driver, supports 120Hz refresh rate, switching delay <15ns.

1.2. Adapt to the 3.3V low voltage requirement of silicon-based OLED to avoid screen sticking.

2. VBGQA1602 (60V/2.5mΩ)

2.1. Backlight PWM dimming MOSFET supports 0.1%-100% stepless dimming to solve the pain point of flickering.

Scene Adaptation

If the LCoS solution is adopted, it is recommended to use VBsemi's VBHM series (high voltage 40V), which supports dynamic aperture adjustment.

3. Sensors and communication modules: the key to instantaneous response

Recommended VBsemi models

1. VBQA1401 (12V/0.8mΩ)

1.1.Sensor load switch, leakage current <0.5μA, extended standby time to 7 days.

1.2. Integrated soft start function to prevent power-on shock to the camera module.

2. VBGQF1101N (SGT MOSFET device/100V)

2.1.Wi-Fi 6E/millimeter wave RF power amplifier control, switching loss is 60% lower than silicon-based.

4. Audio module: the secret of emotional sound quality

Recommended VBsemi models

1.VB1695 (Trench/50V)

1.1. Bone conduction speaker driver, THD (total harmonic distortion) <0.05%, supports 20kHz ultra-high frequency response.

1.2. Key parameters: Ciss (input capacitance) is only 350pF to avoid voice command delays.

 5. Technical Summary and Selection Logic

 Selection Trend

1. 

Integration: VBsemi's VBE series (such as VBQF1202) integrates MOSFET and driver, reducing PCB area by 30%.

2. 

2. Thermal management: The VBQF series (such as VBQF1306) using DFN8 (3X3) packaging has a thermal resistance as low as 1.5°C/W, solving the problem of local heating of the glasses legs.

The MOSFET design philosophy of AI glasses in 2025 - "1 mΩ less resistance, 1 hour more battery life" - VBsemi is redefining the power density boundary of wearable devices through low on-resistance and high-frequency optimization technology. For developers, choosing the right MOSFET is not only about hardware design, but also about the underlying game of user experience: from every frame refresh of the screen to every tone of voice, everything is hidden in the physical characteristics of these micro switches.

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