Chongdiantou recently obtained a 65W USB-C GaN fast charger launched by HP. This product features a compact, elongated cylindrical body design, equipped with new national standard semi-overmolded foldable pins, and comes with a 2-meter long 5A USB-C fast charging cable, balancing portability and output performance.
This charger supports the mainstream USB PD3.0 65W fast charging standard, offering four fixed voltage levels: 5V3A, 9V3A, 15V3A, and 20V3.25A, meeting the fast charging needs of devices such as thin laptops, tablets, smartphones, and Switch consoles.
Product Appearance
The packaging box features a gray-white gradient design with blue accents. The top left corner displays the HP brand logo and product name, the center shows a 3D rendering of the charger's appearance, and the bottom lists key selling points.
Upon opening the package and removing all items, besides the HP 65W GaN charger itself, it includes a USB-C data cable secured with kraft paper tape, along with the user manual and warranty card.
The included USB-C data cable is secured with kraft paper and features a relatively thick overall diameter.
The data cable uses a USB-C to USB-C configuration, with black matte injection-molded terminal housings, supporting high-current fast charging transmission up to 5A.
The charger adopts a classic elongated cylindrical shape. The shell is made entirely of black flame-retardant PC material with a fine matte finish, resisting fingerprints. The output side features a single USB-C port.
The input side features a gray panel splice design with foldable pins, making it more convenient for travel and less likely to scratch other items in bags.
A recessed "65" marking is designed on one corner of the flat side of the body, intuitively indicating its support for a maximum output power of 65W.
A factory barcode label is affixed to the other side of the body.
A single USB-C port is centered on the output end face of the charger, featuring a black core design.
The input end features a gray panel design. The pins can be fully retracted into the housing and are compatible with multi-country adapter plugs, adapting to different regional plug standards.
Close-up of the charger input nameplate parameters:
Model: TPN-OA06
Input: 100-240V~ 50/60Hz 1.6A
Output: 5V3A, 9V3A, 15V3A, 20V3.25A
Manufacturer: Dongguan Aohai Technology Co., Ltd.
The product has passed CCC certification.
The charger is equipped with foldable new national standard overmolded pins for safer use.
Product Dimensions and Weight
Using calipers, the measured length of the charger body is 65.26mm.
The measured side length of the charger body is 32.08mm.
Placing the HP 65W GaN charger next to an Apple67W charger reveals a significant advantage in volume for the HP product.
The size of the charger held in an adult's palm is shown in the image.
The measured weight of the charger is approximately 100.3g.
Fast Charging Protocol Compatibility
Using the POWER-Z KM003C, it was determined that the included data cable has a built-in E-Marker chip, supporting 20V 5A fast charging specifications.
Using the POWER-Z KM003C, it was determined that the USB-C port supports the PD3.0 65W fast charging protocol.
Regarding PDO messages, measurements show the USB-C port offers four fixed voltage levels: 5V3A, 9V3A, 15V3A, and 20V3.25A.
Having briefly reviewed the product appearance and fast charging protocol compatibility, we now proceed to the teardown section.
PCBA Overview Analysis
Cutting open the outer shell along the seam at the input end, it can be seen that the foldable pin module is connected to the internal PCBA module via two AC wires soldered together.
Extracting the internal PCBA module from the outer shell.
It is visible that the internal PCBA module is largely wrapped in heat-dissipating copper sheets.
Using calipers, the measured length of the PCBA module is 53.92mm.
The measured side length of the PCBA module is 27.91mm.
Removing the external heat-dissipating copper sheet and the black insulating Mylar sheet.
It is visible that the PCBA module employs a stacked soldering design of multiple small boards to enhance space utilization. Two high-voltage filter capacitors are placed horizontally at the top, with the transformer in the middle. A plastic insulation bracket is set at the output end, and white glue fills the gap between the capacitors and the transformer for fixation.
Overview of the back of the main board, featuring components such as the rectifier bridge, GaN switch tube, primary controller chip, optocoupler, surface-mount Y-capacitor, protocol chip, and VBUS switch tube.
Viewed from the side of the module, two high-voltage filter electrolytic capacitors are placed parallel and horizontally, supported on the left by a black plastic bracket.
The other side of the PCBA module features an EMI filter small board, with a planar transformer in the middle and a plastic output bracket on the right.
Overview of the output end, showing multiple output filter capacitors.
Disassembling the multiple small boards sequentially, they mainly consist of the bottom main board, the input EMI filter small board on the right, and the synchronous rectification small board.
After cleaning off the glue, the front of the main board shows the rectifier bridge, transformer, solid capacitor, and USB-C interface small board.
The back of the main board features the rectifier bridge, GaN switch tube, primary controller chip, optocoupler, surface-mount Y-capacitor, protocol chip, and output VBUS switch tube.
Front view of the input EMI filter small board.
Rear view of the input small board.
Front view of the secondary synchronous rectification small board, featuring components such as the synchronous rectification controller and synchronous rectification tubes.
Rear view of the secondary synchronous rectification small board.
Through observation of the PCBA module, it was found that this charger adopts a QR+SR switching power supply architecture, where the protocol chip controls the output voltage via an optocoupler. We will now start examining component information from the input side.
Primary Side Circuit Analysis
An input fuse for overcurrent protection.
A common-mode inductor, insulated with heat shrink tubing.
An X2 safety-rated capacitor.
A rectifier bridge from Yangjie Technology (YJ), model YBSL3008A, rated 800V 3A, using YBS packaging.
Another Yangjie YBSL3008A rectifier bridge.
An axial lead inductor.
Two TAICON high-voltage filter capacitors, rated 420V 68μF and 420V 56μF respectively.
A primary controller chip, marked 6151LE.
The built-in primary GaN switch tube is from GaNext, model G2N70R240PD-HS, using XDFN8*8 packaging. This device is a 700V normally-off hybrid GaN power transistor in XDFN8x8-8L packaging, featuring 700V voltage rating and 240mΩ on-resistance.
The chip has a high gate turn-on threshold and ±20V high gate voltage tolerance, allowing direct driving by conventional drivers without negative voltage turn-off. It also features extremely low gate charge, near-zero reverse recovery charge, and very low reverse conduction voltage drop among wide-bandgap devices.
The device integrates patented speed regulation circuits to optimize high-frequency switching performance and improve EMI characteristics, making it highly suitable for fast charging and high-power density power supply applications using QR, ACF flyback, ZVS, or CRM topologies.
Data for the GaNext G2N70R240PD-HS is shown in the image.
The transformer is coded ATQ23.7-A1118.
The surface-mount Y-capacitors are from Sichuan Terui Xiang Technology Co., Ltd. They feature small size and light weight, making them ideal for high-density power products like GaN fast chargers. The part number is TMY1331K.
Data information for Terui Xiang surface-mount Y-capacitors.
An Everlight optocoupler marked EL1018.
Synchronous Rectification Chip
The synchronous rectification controller is from MPS, marked IBHJ, actually model MP6908A, using TSOT23-6 packaging, with a maximum operating frequency of 600kHz. It supports DCM, CCM, QR, and ACF working modes, high-side and low-side applications, features ringing detection to prevent false turn-on, and supports logic voltage and standard voltage synchronous rectification tubes.
A synchronous rectification tube from Silan Microelectronics, model SVGP104R1NL5, rated 100V 4mΩ, using PDFN5*6 packaging.
Fast Charging Output Circuit Analysis
A protocol chip from Weltrend, model WT6655P, using QFN16 packaging.
A VBUS tube marked P035.
An output filter capacitor from APAQ, rated 25V 220μF.
An output filter capacitor from APAQ, rated 25V 820μF.
All disassembly complete, here is a group photo.
Chongdiantou Summary
Finally, the product bill of materials is attached for reference.
This HP 65W GaN fast charger features a classic elongated cylindrical design, with a black matte shell and new national standard overmolded foldable pins.
The product supports PD3.0 65W fast charging, offering four fixed voltage levels: 5V3A, 9V3A, 15V3A, and 20V3.25A, effectively meeting daily and travel fast charging needs for thin laptops, tablets, smartphones, and Switch consoles.
Through teardown analysis, Chongdiantou learned that the charger is manufactured by OEM Aohai Technology. The internal PCBA module uses a stacked soldering design of multiple small boards to maximize space utilization. The exterior is largely wrapped in heat-dissipating copper sheets and black insulating Mylar sheets. Inside, white glue reinforces the transformer and capacitors, with plastic brackets providing isolation and support.
The power architecture adopts a QR+SR switching power supply design. The primary side consists of a controller chip marked 6151LE paired with a GaNext G2N70R240PD-HS GaN power transistor.
The secondary side uses an MPS MP6908A synchronous rectification controller paired with a Silan Microelectronics SVGP104R1NL5 synchronous rectification tube. The output side uses a Weltrend WT6633P protocol chip to control output voltage via an Everlight EL1018 optocoupler.
Additionally, the product uses Yangjie rectifier bridges, Terui Xiang surface-mount Y-capacitors, TAICON high-voltage electrolytic capacitors, and APAQ solid capacitors for input and output filtering. The overall design is highly integrated, with solid and reliable internal components.