USB-C PD Charger 28W — Multi-Voltage 5V/9V/12V/15V

Last updated: April 2026

Specifications of SQ1043 USB-C PD Charger 28W

Parameter	Specification
Model	SQ1043
Input Voltage	100–240VAC, 50/60Hz
Output — PDO 1	5VDC / 3.0A (15W)
Output — PDO 2	9VDC / 3.0A (27W)
Output — PDO 3	12VDC / 2.3A (27.6W)
Output — PDO 4	15VDC / 1.86A (27.9W)
Maximum Power	28W
Protocol	USB Power Delivery 3.0
Connector	USB Type-C
Efficiency	≥88% at full load (DoE Level VI compliant)
Voltage Regulation	±3% under load across all PDOs
Protection	OVP, OCP, SCP, OTP
Surge Protection	1KV / 4KV / 6KV optional
Plug Options	US, EU
Operating Temperature	0°C to +40°C
Certifications	UL 62368-1, FCC Part 15, CE, RoHS, REACH
Warranty	2 years standard (extendable to 3 years)

The Four-Voltage Advantage: One Charger, Every Device

The SQ1043 advertises four fixed Power Data Objects (PDOs) to connected devices: 5V, 9V, 12V, and 15V. This four-tier PDO table covers the full spectrum of USB-C device power requirements below 28W. A smartphone negotiates 5V/3A for standard charging or 9V/3A for fast charging. A tablet requests 12V/2.3A for rapid charge. A portable monitor or Chromebook selects 15V/1.86A for maximum power delivery. The same charger handles all four scenarios — the device picks its preferred voltage automatically through PD negotiation.

This multi-voltage capability is particularly valuable for hospitality and shared-space applications. Hotels equipping bedside charging stations, airports installing passenger charging kiosks, and coworking spaces providing desk chargers all face the same problem: guests and users bring different devices with different power requirements. A fixed 5V charger cannot fast-charge a device that needs 9V. A fixed 12V charger cannot safely power a device expecting 5V. The SQ1043 solves this by offering every standard PD voltage below 20V from a single unit.

Compact Form Factor and Thermal Management

The SQ1043 achieves its four-voltage output in a compact wall-plug form factor — no desk-mounted brick or dangling cord between the plug and the USB-C output. The charger plugs directly into a wall outlet with the USB-C port on the body, keeping the installation clean for commercial environments where cable management matters. The compact design is enabled by a high-frequency switching topology operating at ≥200kHz, which reduces the transformer core size and allows the full 28W power stage to fit within the plug housing.

Thermal management at 28W in a sealed wall-plug enclosure requires ≥88% conversion efficiency to keep internal heat generation below 3.4W. The SQ1043 achieves this through a combination of synchronous rectification on the secondary side (eliminating diode forward-voltage losses), optimized transformer design with low-loss core material, and a PD controller IC with integrated FET drivers that minimize switching losses. The result is a charger that maintains surface temperature below 70°C at sustained full load — well within UL 62368-1 touch-temperature limits for consumer electronics.

Fast Charging Protocol Compatibility

Beyond standard USB PD, the SQ1043’s 9V/3A PDO enables compatibility with Samsung Adaptive Fast Charging and other manufacturer-specific fast charging protocols that operate at the 9V rail. While these protocols technically use proprietary handshakes on top of or alongside PD, the 9V PDO ensures the charger can at minimum deliver the voltage rail that fast-charging devices request. According to USB-IF’s charger specifications, USB PD 3.0 chargers advertising a 9V PDO are compatible with the majority of fast-charging smartphones on the market as of 2024.

The 15V/1.86A PDO serves devices that fall between the tablet tier (12V) and the laptop tier (19V–20V). Nintendo Switch docking stations, certain Chromebook models, and industrial handheld devices with 15V input stages all benefit from this PDO. Without a 15V option, these devices would fall back to 5V basic charging — functional but slow. The SQ1043 ensures they receive their preferred 15V rail and charge at full speed.

OEM Customization and Volume Pricing

Sunshine’s USB-C charger customization program applies to the SQ1043 with full flexibility on the PDO table, physical design, and packaging. The four-PDO configuration (5V/9V/12V/15V) is the standard offering, but Sunshine’s firmware engineering team can modify the PDO table to any combination of voltages and currents within the hardware’s 28W power budget. An OEM whose device requires only 5V and 9V can eliminate the 12V and 15V PDOs for a cleaner negotiation profile. A manufacturer needing 5V/9V/12V/20V can substitute the 15V PDO for 20V at reduced current.

Physical customization includes housing color (custom Pantone or RAL matching), logo application (pad printing or laser engraving), and plug configuration (US NEMA 1-15P or EU CEE 7/16). Packaging ranges from bulk polybag for OEM inclusion in product boxes to custom retail packaging with the brand’s artwork, UPC code, and multilingual safety documentation. MOQ for stock configuration is 1,000 units; custom PDO profiles and branding require 3,000 units. Lead time is 25–35 days from confirmed order.

Certifications and Regulatory Compliance

The SQ1043 carries the complete certification portfolio for global market access. UL 62368-1 for the US and Canada, FCC Part 15 Class B for electromagnetic emissions compliance, CE marking under the EU Low Voltage Directive and EMC Directive, and RoHS/REACH for restricted substance compliance. The DoE Level VI efficiency mark is available as an optional certification for OEMs who require it on retail packaging or for compliance with state-level energy efficiency mandates in California, Oregon, and other states that reference the federal EPS standard.

For OEMs importing chargers under their own brand, Sunshine provides the complete compliance documentation package: test reports from accredited laboratories, certificates of conformity, and declaration of conformity templates that the OEM can customize with their brand name and model number. This documentation package accelerates the OEM’s own regulatory filing process and satisfies the due diligence requirements of major retailers and marketplace platforms.

Frequently Asked Questions

What is the difference between a multi-voltage PD charger and a single-voltage charger?

A single-voltage charger (like the SQ1025) offers 2 PDOs (e.g., 5V and 12V). The SQ1043 offers 4 PDOs (5V, 9V, 12V, 15V), making it compatible with a wider range of devices. More PDOs means broader device compatibility from a single charger SKU.

Can the SQ1043 fast-charge a Samsung phone?

Yes — the 9V/3A PDO enables Samsung Adaptive Fast Charging on Galaxy S and Note series phones. The charger delivers 9V/3A (27W), which exceeds Samsung’s typical 25W fast charging requirement. Charging speed will match or closely approximate the original Samsung charger.

Why does the SQ1043 max out at 28W instead of 30W?

The maximum power is determined by the highest PDO: 15V × 1.86A = 27.9W, rounded to 28W. This is a hardware design choice that optimizes the power stage for the specific current ratings at each voltage tier. A 30W version would require higher current at 15V (2.0A), which would need larger switching components and a physically larger enclosure.

Is the SQ1043 compatible with Apple devices?

Yes — iPhones (8 and later) support USB PD fast charging at 9V. iPads support PD at 5V and 9V. The SQ1043 provides both PDOs and will fast-charge Apple devices at the maximum speed their hardware supports. A USB-C to Lightning cable (for older iPhones) or USB-C to USB-C cable (for iPhone 15+) is required.

What MOQ and lead time should I expect?

MOQ is 1,000 units for stock configuration (5V/9V/12V/15V, US or EU plug) and 3,000 for custom (PDO profile, branding, housing color). Lead time is 25–35 days from order confirmation. Engineering samples ship in 5–7 days for qualification testing.

Ready to Source Multi-Voltage USB-C PD Chargers?

The SQ1043 is built for OEM product managers and procurement teams who need a single USB-C charger that works with every device in their ecosystem — from smartphones at 5V to tablets at 12V to Chromebooks at 15V. With 22+ years of manufacturing experience, UL/FCC/CE certification, and dual-factory production capacity in China and Vietnam, Sunshine delivers the multi-voltage PD charger solution at the quality and price point that competitive product lines demand.

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