Teardown of DELL 60W USB-C Charger DA60NM200
Introduction
ChargerLAB got a Dell 60W USB-C charger DA60NM200, which is equipped with a three-prong socket for grounding when using a laptop. Let's take it apart.
DELL 60W USB-C Charger
The charger has a classic design of Dell laptop chargers, with a frosted shell.
The front is designed with the DELL logo.
There is an LED indicator at the output.
The back is printed with the parameters and Level VI efficiency certification.
The DA60NM200 charger supports 100-240V~50/60HZ 1.7A input and 5V3A, 9V3A, 15V3A, and 20V3A output.
It is equipped with a three-prong socket, which is for grounding when connecting to a laptop.
This is the single USB-C port.
Its size is about 66.39 X 55.06 X 22.38 mm (2.61 X 2.16 X 0.88 inches).
It's much smaller than the Apple 61W charger.
That's how it looks in the hand.
The weight is about 104g (3.66oz).
The ChargerLAB POWER-Z KT002 finds that the USB-C port only supports PD3.0 fast charging protocol and four fixed PDOs of 5V3A / 9V3A / 15V3A / 20V3A.
Teardown
Take apart the shell, and the PCBA module is firmly fixed inside with adhesive.
Take out the PCBA module. It is covered with a copper heat sink and fixed with adhesive on both sides.
A transparent mylar sheet insulates the copper heat sink from the PCBA.
The heatsink on the front of the PCBA module is insulated with tape.
The heatsink is riveted to the solder lug and soldered to the PCBA module.
The PCBA's size is about 62.57 X 50.13 X 18.13 mm (2.46 X 1.97 X 0.71 inches).
Remove the heat sink, and we can see a large yellow-green thermal pad. The plastic bracket is used for insulation between the primary and secondary circuits.
Let's look at the front of the PCBA. The left is the primary electrolytic capacitor; the switching transformer is in the middle and dissipates heat through the thermal pad and adhesive. The upper right corner is the input EMI filter circuit, and the lower right corner is a small board soldered for the synchronous rectifier and filter circuit.
In the back of the PCBA module are the bridge rectifier, primary master control chip and switch transistor, and an optocoupler for output voltage feedback.
Now, let's analyze the components.
The input wire is soldered to the PCBA module, and the black wire is connected directly to the secondary circuit for grounding. There are also soldered safety X2 capacitor, fuse, and first and second common mode choke.
The time-delay fuse is 3.15A 250V.
The first common mode choke is wound with enameled wire and insulated wire.
The second common mode choke is wound with the enameled wire.
The safety X2 capacitor is 0.33μF.
The bridge rectifier is marked with MB30KH.
The high-voltage filter electrolytic capacitor from the Rubycon KXW series is 400V 110μF.
The primary master chip from Delta, marked with P050GE, is in the SOT23 package.
The filter capacitor from the Rubycon YXF series is 100V 4.7μF.
The primary switch transistor from Infineon IPL60R125C7, CoolMOS C7 series, marked with 60C7125, has a withstand voltage of 650V and resistor of 125mΩ.
The transformer is from Delta, and the magnetic core is wound with copper foil for shielding.
The EL 1018 optocoupler is for primary and secondary communication and adjusts the output voltage feedback.
This is the blue safety Y capacitor.
The output side of the charger is soldered with the USB-C receptacle and synchronous rectifier board.
The synchronous rectifier controller from MPS MP6908, in SOT23-6 package, supports a wide range of voltage output and multiple DCM, CCM, and QR modes. It also supports the synchronous rectifier driven by standard voltage and logic level.
The synchronous rectifier from Infineon BSC040N10NS5 is an NMOS with a withstand voltage of 100V and a resistor of 4mΩ.
The output filter capacitor from the Panasonic ZK series is 470μF 25V, with a thermal resistance of 125℃.
The other filter electrolytic capacitor is 25V 100μF.
The output protocol chip from Delta DPD022F has a thermistor in the upper left corner for temperature detection.
The output VBUS switch transistor from AOS AOSP32368 is an NMOS with a withstand voltage of 30V, a resistor of 4.6Ω, and a package of SOIC-8.
The output USB-C receptacle is from LOTES with a steel casing.
The black USB-C receptacle is fixed and soldered by the vias.
OK, that's all for the teardown of the DELL 60W USB-C Charger DA60NM200.
Summary of ChargerLAB
The Dell 60W USB-C charger DA60NM200 is equipped with a three-prong socket, which is for grounding when connecting to a laptop. The single USB-C port only supports PD3.0 fast charging protocol and four fixed PDOs of 5V3A / 9V3A / 15V3A / 20V3A.
The charger adopts the Rubycon high-voltage filter electrolytic capacitor, Delta primary master chip, Rubycon filter capacitor, Infineon IPL60R125C7 primary switch transistor, etc. The internal components are from famous manufacturers and the charger is quite good.
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