Love no open object 24W PD charger disassembled
Today for you to disassemble the love of the open object 24W PD charger, friends who are interested in this charger can also take a look at the previous unboxing test (Kunxing 30W fast charger and love open object 24WPD charger test). Well, without further ado, let’s get straight to the point.
A large amount of glue is used between the components on the front of the PCB board to fix and dissipate heat. The transformer is affixed with a numbering information.
The three cylindrical primary filter electrolytic capacitors are all 400V capacitors, including two 15μF and one 12μF, for a total of 42μF. The brown square is a delay fuse, next to the fuse is NTC thermistor, NTC is the abbreviation of Negative Temperature Coefficient, meaning negative temperature coefficient, generally refers to semiconductor materials or components with a large negative temperature coefficient, the so-called NTC thermistor is a negative temperature coefficient thermistor. Many high-tech electronic products, under ultra-high temperature, ultra-high voltage and other harsh conditions, require thermistors to play a stable temperature control and temperature measurement function. The accuracy of the negative temperature coefficient thermistor thermometer can reach 0.1°C, and the temperature sensing time can be less than 10s. Behind the thermistor is the inductor coil.
Close-up of time-lapse fuse, 3.15A/250V.
Blue capacitors are mainly used to filter out high-frequency interference. THE BACK HALF OF THE USB TYPE-C OUTPUT DAUGHTER BOARD IS WRAPPED WITH INSULATING TAPE.
The output is filtered using two solid capacitors in parallel, and the capacitor is 25V 560μF each. The insulation isolation sheet in the high and low voltage area is fixed with glue.
High and low voltage areas are isolated by insulating plastic sheets. The solder joints are full and shiny, and the pin length is consistent.
The traces of the high-current part of the PCB are tin-coated to reduce the line resistance. Synchronous rectification MOS, from Sisemi Shenzhen’s beloved semiconductor model SIF115N080.
Output protection MOS, from Sisemi Shenzhen Shenzhen’s beloved semiconductor model is SI60P030.
The white R005 element is the current-sense resistor.
The switch tube comes from Sisemi Shenzhen Shenai Semiconductor, model SiF7N65D, 650V/7A.
High-quality product recommendation: PANEL DOB 24W PCB Low energy consumption.