In the relentless pursuit of portability and power, modern charging devices are engineering marvels of miniaturization. The Anker Nano 22.5W Capsule Power Bank exemplifies this trend, cramming substantial capacity and fast-charging capability into a form factor barely larger than a lipstick.
The ANKER logo is printed in the center of the front of the product, with 4 battery level indicators above it.Next, let’s disassemble this power bank to take a look at its internal structure
A close-up of the front of the motherboard reveals that it is soldered with a lithium battery protection chip, a lithium battery protection board, a main control chip, a VBUS switch tube, a boost inductor, and an MCU. As can be seen, our Molded SMD Inductors is among them.
detail shot
The Inductor’s Mission: Core Roles in Power Conversion The molded inductor is not a passive component; it is the energy reservoir and smoother in the switching regulator circuit. Its functions are critical:
- Energy Storage & Transfer: In a boost converter circuit, when the internal MOSFET of the power IC switches on, current builds up in the inductor, storing energy in its magnetic field. When the switch turns off, this magnetic field collapses, inducing a voltage that adds to the input voltage, thereby “boosting” it to a higher output level. This cycle repeats at high frequency (often 500kHz to 2MHz).
- Current Smoothing (Ripple Reduction): The switched current is inherently pulsed. The inductor, by resisting instantaneous changes in current, smooths these pulses into a more stable, continuous output current. Low output current ripple is crucial for safe and efficient device charging.
3. Enabling High-Frequency Operation: Molded inductors, with their stable core material and precise construction, allow the power IC to operate at high switching frequencies. Higher frequency means the inductor itself can be physically smaller—a direct enabler of miniaturization.
Partner with Hunstle company
In the intricate world of compact electronics, the right component partnership is not just a supply decision—it’s a strategic advantage for your product’s performance and reliability. As demonstrated in the Anker Nano, the precise selection and integration of core components like molded SMD inductors are what transform a good concept into a market-leading device.
At Hunstle Electronics, we specialize in advanced inductor solutions for fast-charging and high-density power applications. We provide more than just components; we offer collaborative engineering support, reliable performance consistency, and a partnership focused on optimizing your design’s efficiency, thermal management, and size.
Ready to power your next innovation?
Let’s discuss how our inductor expertise can be integrated into your upcoming projects.
For technical specifications, samples, or a direct consultation, please contact us at: 📧 wayne@hunstle.com