Power Supply Modules: The "Unsung Hero" of Modern Electronic Devices-YQM Electronics

Inside various electronic devices, an inconspicuous yet crucial component silently supports the operation of the entire system—this is the power supply module. Whether it's a mobile phone, computer, industrial robot, or medical device, a stable and efficient power supply module is the foundation for ensuring reliable device operation. The essence of a power supply module is a highly integrated power conversion solution. It encapsulates complex power circuits (such as rectification, filtering, transformation, voltage regulation, etc.) within a compact physical housing, providing 'black-box' power conversion functionality. Users simply need to connect the input power source to obtain a stable DC output of the required specifications (voltage, current, power), greatly simplifying system design.

Power supply modules come in a wide variety and can be categorized according to different standards:

1. Isolated vs. Non-Isolated:

Isolated Modules: Electrical isolation is achieved between the input and output circuits via a transformer or optocoupler. Core advantages lie in safety (preventing high voltage from entering the low-voltage end to damage equipment or harm people), noise immunity (breaking ground loop noise), and level shifting. Essential for medical equipment, industrial control systems, and communication equipment.

Non-Isolated Modules: Input and output circuits are directly connected, offering simpler structure, lower cost, and typically slightly higher efficiency. Suitable for scenarios without mandatory isolation requirements,.

2. Conversion Mode:

AC-DC Modules: Convert AC mains power (e.g., 110V/220V AC) to DC power (e.g., 5V, 12V, 24V DC). Almost all grid-powered devices require this as the 'first stage' power supply.

DC-DC Modules: Convert between DC voltage levels. The most common are step-down (Buck), but also include step-up (Boost), buck-boost, and flyback types. Widely used in battery-powered devices, distributed power architectures, and voltage matching scenarios.

3. Packaging Form:

Board-Mounted: Soldered directly onto the PCB, such as DIP, SIP, SMD packages (SOIC, QFN, BGA, etc.). This is the mainstream form.

DIN-Rail Mounted / Chassis Mounted: Higher power, typically used in industrial control cabinets.

Open Frame: No enclosure, requires the user to install a heatsink. Common in high power density applications.

Below are 10 power supply module products offered by YQM for selection, covering most common application scenarios, along with their advantages compared to peers.

Product Series	Mornsun	Advantages
YQMET	B0505XT-1W2	The YQMET series is a standard surface-mount power module, fully compatible with automated SMT assembly and reflow soldering processes, significantly improving production capacity and reducing labor costs. Features compact size, high efficiency, low output ripple, and provides over 3000V DC isolation. SMD package.
YQME1	B0505S-1WR2	The YQME1 series provides isolation and voltage conversion. Industrial-grade temperature range from -40°C to 105°C, designed for PCB mounting with international standard structure. Features compact size, high efficiency, low output ripple, and provides SIP 1500V/3000V+ or DIP 3000V+ DC isolation. Suitable for applications requiring isolation. SIP and DIP packages available.
YQMV1	E0512S-1WR2	The YQMV1 series offers dual positive/negative outputs or single output. Industrial-grade temperature range, designed for PCB mounting with international standard structure. Features compact size, high efficiency, low output ripple, and withstands over 3000V isolation. Suitable for applications requiring positive/negative voltages, single output, and high isolation voltage. SIP and DIP packages available.
YQMR-1W	B0505LS-1WR2	The YQMR-1W series provides isolation and voltage conversion. Industrial-grade temperature range from -40°C to 105°C, designed for PCB mounting with international standard structure. Features compact size, high efficiency, low output ripple, and provides over 3000V DC isolation. Suitable for applications requiring isolation. SIP package.
YQM10DB	URB2405YMD-10WR3	The YQM10DB series power module has a rated output power of 10W, dimensions 25.425.410.16 mm. Applicable to 2:1, 4:1 input voltage ranges (18-36V, 36-72V, 9-36V, 18-72V). Output voltage accuracy up to ±1%. Widely used in communications, railways, automation, and instrumentation industries.
YQM20DB	VRB2412YMD-20WR3	The YQM20DB series power module has a rated output power of 20W, dimensions 25.425.410.16 mm. Applicable to 4:1 input voltage ranges (9-36V, 18-72V). Output voltage accuracy up to ±1%. Widely used in communications, railways, automation, and instrumentation industries.
YQMP78XX-0.5	K7805-500R3	The YQMP78XX-0.5 series are highly efficient switching regulators. Features high efficiency, short-circuit protection, thermal shutdown, low heat generation, and requires no external heat sink during use. Pin-compatible with 78xx linear regulators.
YQM05AF	LS05-15B12R3	An upgraded version of the YQM05AF series switching power supply, output power 5W. Features high reliability, smaller size, and high cost-effectiveness. Widely used in industrial control, power instruments, meters, smart homes, and related industries.
YQM10AF	LS10-13B05R3	The YQM10AF series has an output power of 10W. Features high reliability, smaller size, and high cost-effectiveness. Widely used in industrial control, power instruments, meters, smart homes, and related industries.
YQM10AG	LD10-23B12R2	The YQM10AG series power module has a rated output power of 10W. Features a wide input voltage range, compatible with both AC and DC inputs. Offers high cost-effectiveness and low no-load power consumption. Widely used in smart homes, medical, industrial control, and industrial sectors. Reference application circuit required if used in harsh EMC environments.