preface
Sony is a well-known old home appliance brand with a rich product line, which has been very popular with young people in recent years, mainly Play Station. In addition to game consoles and mobile phones, Sony has also launched a number of USB PD chargers, charging head network recently received a Sony 45W cord PD fast charger, the following for everyone to bring the dismantling of this charger.
Sony 45W adapter out of the box
This adapter comes with a USB-C output cable, a frosted body shell that resists fingerprinting, and a top surface injection molded with a SONY brand logo.
The waist is rounded between the sides.
The charger is equipped with fixed national standard plugs, and the horizontal layout of the fuselage is destined to be only plugged in on both sides of the socket, otherwise it will occupy the position.
The input housing is printed with charger parameters.
Model: AC-0080-CN
Input: 100-240V~50/60HZ 0.9A
Output: 5V3A, 9V3A, 15V3A
Manufacturer: Feihong Technology Co., Ltd
Production plant: Feihong (Dongguan) Electronics Co., Ltd
The adapter is CCC certified as well as Class VI Energy Efficiency Certified.
The output cable is bent.
USB-C cable head housing scrub for easy plugging and unplugging.
The measured height of the adapter body is 47.78mm.
The width is 66.58mm.
The thickness is 33.02mm.
The cable length is about 1 meter.
The overall size of the product held in your hand feels.
The total weight is about 182g.
The charger measured using the Chargelab POWER-Z KT002 supports QC3.0 and PD2.0 universal fast charging protocols.
In addition, it has three sets of fixed voltage gears of 5V3A, 9V3A and 15V3A.
Sony 45W adapter out of the box
After having a basic understanding of Sony's adapter, let's continue to disassemble it to see how the workmanship materials are.
Due to the internal glue filling of the charger, the internal PCB module cannot be removed after the shell is disassembled, and the cutting machine is used to cut the housing and remove the PCB module.
The PCB module is filled with gravure and the inner stiffener of the shell, which is very well combined, which is also the reason why it is difficult to remove the PCB module.
The AC input is wire-welded.
The output terminal wire is welded with cold pressed terminals.
Remove the potting compound from the PCB module and see that the AC input wires are also cold-pressed terminal soldered.
At a glance at the AC inputs, you can see fuses, X capacitors, common mode inductors, tape-wound insulation, and NTC thermistors that suppress inrush currents.
At a glance on the output side, you can see that the secondary output line is welded to a vertical protocol board. The green element between the capacitor and the transformer is a thermistor that detects the temperature rise of the charger.
At a glance on the back of the circuit board, you can see the primary switch tube and the secondary synchronous rectifier circuit, and the slotted circuit between the primary stage of the circuit board strengthens the insulation.
The height of the PCBA module was measured to be 44mm.
The width is 62mm.
The thickness is approximately 22.8mm.
Slow melt fuse at the input, specification 3.15A 250V.
The first stage common mode inductor is two-wire wound with a green magnetic ring.
The X capacitor size is 0.47μF.
The second common-mode inductive magnetic ring has an insulating bracket at the bottom and an insulating tape wrapped around the outside.
The thermistor is not covered by the potting adhesive, so as to avoid the heat conduction of the potting adhesive, the resistance will not be reduced, and the conversion efficiency of the charger will be reduced.
Input rectifier bridge silk screen printing MB30JL.
The high voltage filter capacitor comes from Guimigong, which is used to filter the pulsating DC output of the rectifier bridge into DC, KXJ series long life capacitor, 105°C 12000 hours, 400V 68μF.
The switching power supply primary controller uses NXP TEA18362T, a multi-mode quasi-resonant flyback controller that operates in quasi-resonant mode under heavy loads and DCM mode at light loads, with all operating modes being opened at the bottom.
The TEA18362T has built-in high-voltage start-up, X-capacitor discharge support, and adjustable soft-start. The device has low operating current, built-in overpower, overheating, transformer demagnetization, high-precision overvoltage protection, maximum on-time protection and other protection functions.
Primary switch tubes from Bench Half, TSM70N380, Super junction NMOS tubes, withstand voltage 700V, conductivity 0.38Ω, available in TO252 chip package.
A close-up of the flyback RCD absorption circuit is used to absorb the transformer's primary leakage inductance energy.
Close-up of a thermistor for temperature detection for charger overtemperature protection.
Close-up of the transformer, tightly wound using insulating tape.
Blue Y capacitor close-up.
1019 photocoupler for feedback adjustment of output voltage, by adjusting the current intensity of the input, changing the light emitting intensity of the internal LIGHT-emitting diode, the phototransistor at the receiving end controls the voltage drop of the triode according to the intensity of the received light, and realizes isolated communication.
The alternating current output of the transformer is converted from a synchronous rectifier circuit to a DC output, and the synchronous rectifier controller is NXP TEA1792, which is a synchronous rectifier controller that supports DCM and quasi-resonant flyback modes of operation. An internally integrated 10V output gate driver maximizes efficiency under any load. The chip has built-in self-powered circuitry, eliminating the need for auxiliary coils, and supporting both high-side and low-side applications.
Synchronous rectifier tube from AOS Bandai, model AON6250, withstand voltage 150V, conductivity 16.5mΩ, available in DFN5*6 package.
The protocol board is welded to the PCBA by a row of needles, and the output line is also welded to the protocol board, and the front of the board is a protocol chip.
On the back are a voltage regulator chip and a VBUS switch tube.
The protocol chip is from Etron, EJ898P, which is a protocol chip that supports USB PD2.0 and supports 100W power transmission.
VBUS switch tubes from Bandai, AO4447A, PMOS, withstand voltage 30V, conductive resistance 5.5mΩ, available in SO8 package.
Magnetic ring inductor for output filtering.
Output filtered electrolytic capacitor from Lilong, 1500μF 25V.
Another filter capacitor, from Koshin Dongjia, has a specification of 25V150μF.
Filtered solid capacitor information is glued out by the potting glue, and information such as brand parameters cannot be recognized.
All disassembled, let's take a family portrait.
Charging head net disassembly summary
The Sony 45W PD charger uses a conventional square design with its own 1 meter output cable and fixed pin design, but the pin setting is not very friendly for multi-hole sockets and will block other jacks. According to the previous observation of the charging head network, the charger of the big brand with its own cable usually does not care about the appearance design, and the competitiveness is obviously lacking compared to domestic manufacturers. The charger supports PD2.0 fast charge protocol, and the output supports three sets of fixed voltage levels of 5V3A, 9V3A, and 15V3A, but it can still power a notebook that supports PD fast charge.
The charging head network learned through disassembly that Sony's charger uses a potting process, which has stronger heat dissipation performance and weather resistance, and a built-in thermistor is used to detect temperature rise. The charger adopts NXP TEA18362 primary controller + TEA1792 synchronous rectifier controller, the protocol chip adopts EJ898P, which supports PD2.0 fast charging, and the output adopts electrolytic capacitor and solid capacitor with filtering to meet the needs of long-term use.