Prestigious PCB Manufacturing Company in Vietnam
Prestigious PCB Manufacturing Company in Vietnam
In each phone charger,mạch PCB (Printed Circuit Board)plays a central role in converting current and protecting the device safely. However, over time or due to substandard design, the charging circuit can develop many technical errors. Below are10 common errors on phone charging circuits, causes - solutions and how to choose MyMy Technology Prestigious PCB manufacturing in Vietnam to ensure long-term safety of the equipment.
1. Reasons Why Phone Charges Slowly
One of the most common mistakes isCharging speed is slower than normal. The cause may come from:
- PCB circuit is unstable, possibly with weak current regulation.
- The USB port or charging port is broken.oxidized or dusty.
- The charging current control IC is operating at incorrect parameters.
In production,standard charging circuitmust havefeedback circuitAutomatically detects voltage levels and adjusts to suit each battery type.
2. Why is the battery not charging? MyMy Technology
If the phone does not charge, the error may come fr om overvoltage protection circuit or reverse current prevention diode/damaged. In addition, poor quality charging cable or charger also directly affects.
In the professional production line, thePrestigious PCB manufacturing company in Vietnam regularly - checked voltage stabilizer function - reverse current protection by automatic equipment before leaving the factory, to limit this error.
3. How to Handle When Your Phone Gets Hot While Charging
High temperature when charging usually comes fromMOSFET or power IC being overloaded. Poor quality charging circuits can cause high frequency noise, causing heat to generate faster.
The solution isRedesigned PCB with large copper heatsink area, use MOSFET with low resistance (Rds(on)) and high frequency noise filter capacitor to reduce energy loss. These improvements have now been applied by many factories in Vietnam in 20W - 30W fast charging lines.
4. Charging Circuit Causes Power Failure – What Is The Cause? MyMy Technology
When charging the phone and the device suddenly turns off, the cause is usually a short circuit or Broken charging IC. On the PCB, just one wrong connection or shorted capacitor can cause the entire power supply to be cut off.
To fix this, the engineer needs to useoscilloscopeCheck the output signal and replace the faulty components. With professional manufacturing companies, this process is done automatically byICT (In-Circuit Test) systembefore complete assembly.
5. How to Fix Unstable Charging Circuit
Unstable charging circuit is shown by continuously fluctuating voltage or phone sometimes charges, sometimes doesn't. The cause may be due to dry capacitor, wrong resistor value, or unreasonable mass line design.
To stabilize the current, engineers need replace power filter capacitor, Optimize component layout on PCB, and ensure electrical wiringshort - wide - few intersections.
6. Automatic Charging Interruption – Technical Causes
Some charging circuits have the phenomenon automatically shut off when the battery is not full. The cause usually comes fromThermal protection circuit (NTC) or IC incorrectly recognizes full battery signal.
To fix this, I need to check the feedback circuit from the battery to control ICIn modern plants, the protection circuit is pre-simulated byAltium Designer or Proteus software, which helps to minimize automatic shutdown errors during use.
7. Battery Drains Quickly After Charging – Circuit or Battery Fault?
If the battery drains quickly even after a full charge, it is not always the battery that is at fault. The charging circuit can provide the current is not stable enough, causing the battery to not charge to its full capacity.
Reputable PCB manufacturers often integrate CC/CV (Constant Current – Constant Voltage) charging current control circuit to ensure the charging process is stable, avoiding a fake full charging phenomenon.
8. Instructions for Checking Faulty Components on the Charging Circuit MyMy Technology
To detect faulty components, engineers can test with a multimeter:
- Measure diode resistance to determine the reverse current.
- Measure capacitor to test the battery's ability to store electricity.
- Check the Charging IC by the oscillation signal on the output port.
In the manufacturing plant, this inspection process is automated by AOI (Automatic Optical Inspection)– helps detect component errors with micrometer accuracy.
9. When to Replace the Phone Charging PCB Circuit MyMy Technology
If the charging circuit is burned, cracked, or has damaged key components such asPower IC, MOSFET, protection diode, replacement is necessary. Although it can be repaired, performance will be significantly reduced.
ThePCB manufacturing company in Vietnamcurrently providestandard replacement circuit board, compatible with many iPhone and Android chargers, ensuring quality equivalent to genuine products.
10. Choosing a Reputable PCB Manufacturing Company in Vietnam MyMy Technology
To avoid the above errors, businesses should chooseCharging circuit manufacturer with modern SMT – AOI – ICT production line, capable of inspecting each stage. One of the typical units isMyMy Technology Company, specializedResearch, design and manufacture PCB circuits for iPhone - iPad chargers, with:
- Team of electronic engineers with over 10 years of experience.
- 5-step pre-shipment inspection process.
- Products compatible with CE, RoHS safety standards.
MyMy Technology not only provides quality charging circuits for the domestic market but also targets OEM and ODM partners in the mobile device field.
Conclude MyMy Technology
Faults on the phone charging circuit can originate from design, components or manufacturing processes. Selecting a Prestigious PCB manufacturing company in Vietnam is the way to ensure your device is fully protected – both safe for users and prolonging the life of the battery and charger.
A good circuit board not only helps the phone charge quickly and stably but also showsVietnamese technology quality is growing in the global electronics field.
