Capacitor Charging and Discharging: The “Energy Dispatcher” of PD Fast Charging
1. Charging Voltage Stabilization: The PD fast charging protocol requires dynamic voltage regulation (e.g., 5V → 9V). Capacitors absorb voltage spikes by rapidly storing energy, protecting the chip from shock. YMIN liquid aluminum electrolytic capacitors (such as the KCX series) have an ESR as low as milliohms, accelerating charge accumulation, reducing energy loss, and improving charging efficiency.
2. Discharging Current Stabilization: When a device experiences sudden high power demands (e.g., 20W → 30W), capacitors must respond in milliseconds to release current. YMIN NPX solid-state capacitors support instantaneous currents exceeding 20A, preventing voltage drops while filtering out high-frequency ripple to protect battery health.
Why is PD fast charging inseparable from capacitors?
When the fast charging chip switches voltage levels, capacitors act as a “dynamic buffer pool,” balancing power fluctuations through charging and discharging, enabling seamless protocol switching!
YMIN’s three cutting-edge technologies address the pain points of the PD fast charging industry.
1. 50% Smaller:
• The KCX series high-voltage electrolytic capacitors (400V, 15μF) are 40% smaller than traditional models, enabling the Moso 20W fast charger to achieve a compact 30×30×30mm footprint.
• Multilayer solid capacitors (such as the NPX 16V, 330μF) are only 1-2mm thick and can be embedded on the back of the PCB, freeing up space for the GaN ultra-thin charger.
2. 60% Efficiency Improvement:
• Polymer solid capacitors (MPS series) offer an ESR as low as 3mΩ, halving charge and discharge losses and reducing heat generation, resulting in adapter efficiency exceeding 92%.
• Doubled Ripple Current Capability: Liquid horn capacitors (LKD series) can withstand 1.3 times the rated ripple current, enabling continuous 100W fast charging without frequency throttling.
3. Rock-Solid in Extreme Environments:
• For in-car fast charging, solid-liquid hybrid chip capacitors (VGY series) support a wide operating temperature range of -55°C to 125°C, withstand engine compartment vibration, and have a lifespan exceeding 10,000 hours.
• Capacity retention is >90% after 300,000 charge-discharge cycles, far exceeding the lifespan of a complete mobile phone.
Real-World Case Study: The Common Choice of Global Manufacturers
• MOSO 20W Mini Charger: Utilizes a combination of YMIN KCX high-voltage capacitors and NPX solid-state capacitors, delivering a DC-like stable 9V/2.22A output and compatibility with PPS dynamic voltage regulation.
• 120W In-Car GaN Fast Charger: VHT solid-liquid hybrid capacitors withstand high temperatures and vibration, are 3C certified for safety, and initiate PD fast charging in 3 seconds.
• AT&T Folding Fast Charger: The KCX series enables ultra-thin devices, supports the PPS protocol, and holds a top-three market share in the American standard.
Why has YMIN become the “standard” for PD fast charging?
A trinity of “small size, low ESR, and high density”:
- Small: KCX capacitors are 40% smaller than their competitors, allowing 65W GaN chargers to fit in your pocket;
- Fast: NPX solid-state capacitors deliver a discharge response of less than 1ms, with voltage fluctuations controlled to ±1%;
- Stable: From extreme cold of -55°C to underhood temperatures of 125°C, performance remains stable with zero degradation.
YMIN Capacitors – The “Energy Director” of the Fast Charging Era
From pocket-sized mini chargers to high-speed in-car chargers, every joule of energy is precisely allocated!
Post time: Aug-20-2025