Preface
Recently, the charging head network obtained two 65W USB-C power adapters , , which has been disassembled and shared the classic styles. This issue continues to disassemble another one, adapter body "slim and slender", which can be said to have changed people's inherent impression of laptop adapters. Let's take a look at how it is designed inside.
Continental 65W power adapter appearance
Continental This adapter comes with a very long USB-C output cable. Compared with the general 65W adapter, this "slim and slender" body makes it more recognizable.
body uses a black shell made of PC flame retardant material, with a matte and anti-fingerprint, and the waist is rounded in all sides.
is printed with adapter parameters
Model: ADT-65RIC-D3
Input: 100-240V~50/60Hz 2A
Output: 5V3A, 9V3A, 15V3A, 20V3.25A
Manufacturer: Shenzhen Oulutong Electronics Co., Ltd.
Adapter has passed the VI energy efficiency certification.
input power cord is removable and designed for easy replacement. The plum blossom socket is used to ground the user to effectively avoid the feeling of electric shock.
output terminal is equipped with LED indicator .
USB-C cable head shell shell is matte, which is convenient for users to plug and unplug.
measured the adapter body length to be 107.87mm.
has a width of 35.64mm.
has a thickness of 26.87mm.
USB-C cable length is up to 2 meters. The total weight of the
adapter with wire is about 187g.
used ChargerLAB POWER-Z KM002C to measure the adapter to support the PD3.0 fast charging protocol.
and has four sets of fixed voltage gears: 5V3A, 9V3A, 15V3A, and 20V3.25A.
Continental 65W power adapter disassembly
After having a basic understanding of this long-shaped power adapter, we will continue to disassemble it to see how the internal design and materials are used.
First remove the two covers along the input end and extract the internal PCBA module. The module is wrapped in aluminum sheets to dissipate heat and is wrapped in tape to fix it. The edge of
heat sink is fixed by snaps.
Use vernier caliper to measure the length of the PCBA module to be approximately 92.48mm.
PCBA module width is about 31.98mm.
PCBA module height is about 23.07mm.
input wires are connected with welding, glued and reinforced at the wire connection, and insulated at the socket welding. The wire welding point on the output side of
is also reinforced by glue.
heat sink is fixed by welding.
aluminum heat sink is a charger PCBA module inside, and the heat sink is filled with thermal glue .
Power adapter inputs list, welding fuses, EMI devices.
output end soldering filter capacitors and LED indicators.
PCBA module front list, welding fuse on the left, two-stage common mode inductor and safety X2 capacitor, primary high-voltage filter capacitor, transformer and output filter capacitor, etc.
PCBA module soldered rectifier bridge , primary main control chip , switch tube, feedback optocoupler , synchronous rectifier controller, synchronous rectifier tube and protocol chip, and the output voltage is fed back through the optocoupler.
Through observation of the PCBA module, this 65W power adapter of Continental uses the QR flyback switching power supply architecture, combined with synchronous rectification, the output voltage is controlled by the protocol chip, and outputs a wide voltage range. Next, we will start to understand the information about each device from the input.
Power supply PCBA module inputs list, welding fuses, common mode inductors, safety standards X2 capacitors and other components.
input fuse comes from CONQUER Merit, MST series ultra-small delay fuse, specification is 3.15A 250V, used for input overcurrent protection.
first-level common mode inductor is wound with insulated wire and enameled wire , and the insulated bracket is welded at the bottom.
safety criterion X2 capacitor comes from STE Matsuda Electronics.
second-level common mode inductor is wound insulated with tape.
rectifier bridge is welded to the back of the PCB and glued to enhance heat dissipation. The rectifier bridge model is MB30M, and the specification is 3A 1000V.
high voltage filter capacitor comes from SAMXON Sanxin, with a specification of 82μF400V.
primary master control chip comes from RICHTEK Richtek Technology, model number is RT7786. It is a master control chip suitable for USB PD fast charging power supply. It has standby power consumption below 30mW, supports external thermistor for temperature protection, and has secondary rectifier tube short circuit protection.
switch tube comes from Toshiba , model TK12P60W, is a NMOS with a pressure resistant 600V and a resistance of 265mΩ, and is packaged in DPAK.
20mΩ resistor is used for primary current detection. The filter capacitor powered by
comes from SUSCON Guankun, with a specification of 10μF and 50V.
transformer is tightly wrapped and insulated with tape, and an information label is affixed on the top.
Blue Y capacitor comes from SHM Hongming.
007 Optocoupler is used for output voltage feedback regulation.
synchronous rectifier controller comes from MPS core source semiconductor, model MP6907, is a synchronous rectifier controller that supports wide range of voltage output, DCM, CCM, and QR working modes. It supports high-side and low-side applications, and supports standard voltage and logic voltage-driven synchronous rectifier tube, which is packaged in SOT23-6.
synchronous rectifier tube comes from Toshiba, model TPH8R80ANH, is an NMOS with a pressure-resistant 100V and a resistance of 7.4mΩ.
power supply output side list, solder a filter electrolytic capacitor, solid-state capacitor and power indicator .
output filtered electrolytic capacitor comes from SUSCON Guankun. Specifications are 1000μF and 25V. The solid capacitor connected in parallel on one side of
specification is 100μF 25V.
output protocol chip comes from Weltrend, model WT6632F, this chip has passed USB PD3.0 certification. As a highly integrated USB PD controller, it supports USB PD3.0 specifications and supports a wide operating voltage range from 3V to 30V. It is designed for output devices such as chargers, mobile power supplies, etc.
output VBUS switch tube comes from Toshiba, model TPCA8109, is a PMOS with a voltage resistant to 30V, with a resistance of 7mΩ.
output LED indicator light close-up, used for power output indicator.
is fully disassembled, and a family photo is available.
charging head network disassembly summary
Continental Tong This power adapter has a long strip design, comes with a 2-meter long output cable, supports three-plug power input, which is easy to carry and store. The adapter has a 20V output voltage gear, which can meet the laptop power supply applications. It is equipped with an indicator light to indicate the power status.
charging head network learned through disassembly that this power supply adopts a flyback architecture, the primary chip uses Richtek RT7786, the secondary synchronous rectification controller uses MP6907, and the protocol chip uses Weiquan WT6632. The primary switch tube, synchronous rectifier tube and VBUS switch tube are all from Toshiba. The heating element is glued to dissipate heat by using a heat sink to effectively reduce the temperature rise during long-term operation.
