A tablet, phone, earbuds, and watch on a desk—or two phones, a pair of earbuds, and a watch—is not an uncommon setup today. But most 3-in-1 wireless charging docks on the market can only charge three devices; the extra device still needs its own cable.

A 3-in-1 wireless charging solution from Bieland uses a single chip to simultaneously drive three wireless charging outputs—25W for a phone, 5W for earbuds, and 3W for a watch—plus an additional wired fast-charging port. With four outputs running at the same time, one board can fully charge four devices.

1. One Board Handles All Desktop Charging

Let’s take a look at all the features of this board.

One board with three wireless channels plus one wired channel covers nearly every desktop charging scenario.

2. What Enables One Chip to Deliver “One-Chip, Triple-Output”?

The “brain” of this solution is Bieland’s D9812 one-chip, triple-output transmitter controller IC.

The D9812 is a fully synchronous digital demodulation transmitter controller IC. It is compatible with the latest WPC Qi2.2 standard and supports MPP/BPP/EPP protocols. It features a 100MHz core frequency and PWM up to 200MHz—finer PWM means smoother power transfer, lower heat, and better EMC performance.

More importantly, the D9812 can control three independent wireless charging channels simultaneously. Each channel independently manages its own power output, communication, and status detection.

The IC also integrates fast-charging protocols such as PD3.0 (PPS)/QC3.0, features built-in cycle-by-cycle hardware-level OCP protection, and supports USB in-system firmware updates. After a product has shipped, if it needs to support new phone models or optimize charging logic, it can be upgraded simply by plugging in a USB cable—no dedicated programmer required.

3. Display: More Than Just Good Looks

Many 3-in-1 charging docks only handle charging, leaving users completely unaware of the current charging status—fast charging or slow charging? What is the power?

This module has an LCD screen embedded in the center of the lower section, displaying the real-time charging power of each coil. The charging status is clear at a glance.

For brands, a display is a signature feature of premium products—it lets users intuitively see that “my device is fast charging,” rather than relying on guesswork.

4. Why Is This Solution Ideal for Premium Products?

1. One Chip Drives Three Charging Channels

Conventional 3-in-1 solutions often require multiple controller ICs working together, resulting in high BOM cost and complex debugging. The D9812 drives three wireless charging channels simultaneously from a single chip, greatly simplifying peripheral components for lower cost and higher reliability.

2. Qi2.2 Compliant and Future-Ready

Qi2.2 is the latest standard released by the Wireless Power Consortium (WPC) in December 2024, raising maximum power from 15W to 25W. The iPhone 16 series and many Android flagship phones already support Qi2.2. Solutions using the D9812 are directly compatible with this standard, giving products a longer lifecycle.

3. Simultaneous Fast Charging for Multiple Devices, a Complete Experience

25W phone + 5W earbuds + 3W watch + wired fast charging—four charging outputs in one device, saving users space and time.

4. LCD Display Enhances Perceived Value

A display visualizes charging status and is an intuitive marker that separates “premium” from “ordinary” products.

5. Applicable Product Form Factors

Based on this solution, the following products can be developed:

Desktop 4-in-1 magnetic charging dock: for office desks and nightstands

Multifunctional desk lamp charging station: for premium smart homes

Custom multi-device charging stand: coil layout can be adjusted based on the enclosure design

If you are planning a premium 3-in-1 wireless charging dock with a display, contact us for samples and solution documentation. Technical specifications are subject to the official datasheet. For specific applications, please contact a sales engineer.