SMD shielded power inductors are widely used in electronic circuits. They provide essential power circuit and voltage conversion functions, and they also effectively reduce electromagnetic interference through their shielding design, thereby ensuring the circuit’s stability and reliability.
The use of SMD shielded power inductors in DC-DC converters primarily encompasses the following aspects:
1. DC/DC Converter for Laptop CPU: SMD shielded power inductors play a key role in DC/DC converters for laptop CPUs, providing stable current and voltage to ensure the normal operation of the CPU.
2. Mobile Phones: In smartphones, SMD shielded power inductors are used in various power management circuits, which help reduce electromagnetic interference and improve the stability and reliability of the equipment.
3. Liquid Crystal Display (LCD): In LCD devices, SMD shielded power inductors are used for power management to ensure a stable power supply of the display and reduce electromagnetic interference.
4. Hard Disk Drive (HDD): In the power management of hard disk drives, SMD shielded power inductors provide stable current and voltage to ensure the normal operation of the hard disk.
5. Server: In the server, SMD shielded power inductors are used in power modules to ensure a stable power supply of the server, reduce electromagnetic interference, and improve the overall performance of the server.
SMD shielded power inductors have the following characteristics:
Magnetic Shielding Structure: Minimizes electromagnetic interference (EMI) to ensure circuit stability.
Low DC Resistance (DCR): Reduce energy loss and improve efficiency.
High Rated Current: Can withstand high current loads and is suitable for high-power applications.
SMD shielded power inductors for DC-DC converters have many important functions in the circuit, mainly including the following aspects:
1. Energy Storage and Release: SMD shielded power inductors can store the electrical energy provided by the power supply and release this energy when needed, which is essential to maintain the stable operation of the circuit.
2. Reduce Electromagnetic Interference: The shielding design can effectively block the magnetic field generated inside the inductor from radiating outward, while reducing the impact of external electromagnetic interference on the inside of the inductor, thereby improving the anti-interference ability of the circuit.
3. Improve Power Efficiency: By reducing energy loss, the shielding design can improve the power conversion efficiency, thereby improving the overall power efficiency of the circuit.
4. Filtering: Power inductors can filter out the AC component in the current and make the output voltage more stable. In electronic circuits, this helps reduce the ripple in the power supply, improve the purity of the power supply, and provide stable DC voltage for electronic devices.
5. Energy Conversion: In circuits such as switching power supplies, power inductors can convert input voltage into output voltage to meet the needs of different electronic devices. For example, in DC-DC converters, power inductors convert input DC voltage into output voltages of different voltage levels by continuously storing and releasing energy.
6. Electromagnetic Interference Suppression: Due to the impedance characteristics of the inductor coil, the power inductor can effectively suppress the propagation of electromagnetic interference signals and improve the reliability and stability of the equipment.
7. Current Limiting: Power inductors can limit current to prevent excessive current from damaging the circuit. When the current exceeds the set value, the inductor coil will generate a larger impedance, thereby limiting the increase in current.
8. Choking Effect: Prevent the sharp change of current in the AC circuit, so that the current passes through the circuit relatively smoothly to ensure the normal operation of the circuit.
9. Tuning and Frequency Selection: The inductor coil and capacitor in parallel can form an LC oscillator, which plays a tuning and frequency selection role to ensure that the circuit works normally at a specific frequency.
These functions together ensure the stable and efficient operation of DC-DC converters in various electronic devices. In DC-DC converters, SMD shielded power inductors are mainly used to store and release energy, reduce electromagnetic interference, and improve the power efficiency of the circuit. Its shielding design can effectively block the internal magnetic field from radiating outward, reduce the impact of external electromagnetic interference on the inductor, and thus improve the stability and efficiency of the circuit.
Advantages of Shenzhen Zhenhua Inductors
Founded in 2001, Shenzhen Zhenhua Ferrite Ceramic Electronics Co., Ltd. is a leading technology developer in the passive component industry, with business covering multi-layer chip inductors, wound chip inductors, common mode inductors, NTC thermistors, transformers and capacitors. Our product line has been widely used in communications, consumer, computer, lighting, security, smart grid, medical equipment, automotive, aerospace and other fields.
Other advantages include:
Fully automated manufacturing
High reliability AEC-Q200
ISO 9001 quality standard
RoHS compliant
REACH compliant
Why Choose Shenzhen Zhenhua?
Our company has more than 1,000 inductors and 15 years of experience in this field. It is a product that produces extremely low resistance over a wide frequency range. Shenzhen Zhenhua is widely recognized by the global technical team for designing, manufacturing and providing high-quality, high-performance signal integrity and noise filtering solutions. Worldwide delivery. If you need samples, please contact us: sales@ZXcompo.com.
