Key Takeaways
- The FSP220-50FGBBI power supply is a compact 220W ATX switching power supply and AC line powered PSU with an active PFC circuit and full range 90-264Vac input, ideal for mini industrial PCs, 1U systems and embedded controllers.
- Its multi output 3.3V 5V 12V -12V 5Vsb rails deliver tightly regulated power with low ripple and noise output, ensuring stable operation for modern processors, storage devices and I/O cards.
- Engineered as a high efficiency power supply, it reaches around 82–85 % efficiency at typical loads and uses an internal 40 mm fan, making it a reliable 40mm fan cooled power supply for continuous 24/7 duty.
- Comprehensive protections – over voltage protection, over current protection, and over power protection – work together with a monitored power good signal to protect both PSU and downstream electronics.
- With a wide operating temperature range, FCC CISPR22 Class B compliant EMI performance and MTBF 100000 hours reliability, the FSP220-50FGBBI simplifies certification and long-term deployment in industrial environments.
Compact industrial PCs and embedded controllers need dependable power in a very small footprint. The FSP220-50FGBBI power supply was designed exactly for this scenario. As a 220W ATX switching power supply that complies with Flex ATX / 1U mechanics, it combines high efficiency, robust protections and global approvals in one AC line powered PSU that is easy to integrate into existing systems.
Industrial Flex ATX design for mini IPCs and 1U systems
On the TPS Elektronik product page, the FSP220-50FGBBI is presented as a durable, high-performance Flex ATX / 1U unit for building mini industrial PCs and other compact systems. It delivers 220 W continuous output power, uses industrial-grade components and is optimized for 24/7 operation in harsh environments.
Because it follows standard Flex ATX and ATX12V guidelines, the supply fits seamlessly into many existing 1U and small-form-factor chassis. At the same time, its industrial PC power supply pedigree – including robust cooling, extended temperature rating and enhanced EMC performance – makes it a solid upgrade for legacy consumer-grade PSUs.
Electrical performance and multi-output rails
Internally, the FSP220-50FGBBI is an AC line powered PSU with an active PFC circuit that meets EN61000-3-2 harmonic limits and accepts a full range 90-264Vac input at 47–63 Hz. This wide input window allows the same model to be deployed worldwide without any manual range switching.
The DC side provides multi output 3.3V 5V 12V -12V 5Vsb rails. According to the specification, +3.3 V delivers up to 8 A, +5 V up to 12 A and +12 V up to 14 A, while −12 V supports 0.3 A and +5Vsb 2.5 A. Total combined power is 220 W, with a +3.3 V/+5 V combined limit of 61 W.
Output regulation is typically within ±5 % for the main rails and ±10 % for −12 V, with low ripple and noise output specified as 50 mVpp on +3.3 V, +5 V and +5Vsb and 120 mVpp on +12 V and −12 V. These values ensure stable operation for sensitive digital circuits and communication interfaces.
The supply integrates over voltage protection on +3.3 V, +5 V and +12 V, over current protection for each of the main rails and over power protection that latches the PSU off if total load exceeds 150 % of rated power. This layered approach prevents damage to both the FSP220-50FGBBI power supply and the connected system in fault conditions.
A TTL-compatible power good signal (P.G.) indicates when all DC outputs are within regulation. At 50 % load the signal typically goes high 100–500 ms after power-on and drops at least 1 ms before loss of regulation, giving the motherboard enough time to shut down safely.
Efficiency, standby performance and 40 mm fan cooling
Efficiency tests in the datasheet show the FSP220-50FGBBI operating as a high efficiency power supply, achieving approximately 82 % at full load, 85 % at 50 % load and 82 % at 20 % load for both 115 VAC and 230 VAC. This helps reduce thermal stress in compact chassis and lowers operating cost over the lifetime of the system.
Standby efficiency on the +5Vsb rail is optimized to meet modern ErP / Lot 6 requirements, with efficiency targets above 45 % even at just 45 mA load and up to 70 % at higher standby currents. That allows always-on features such as Wake-on-LAN without wasting energy.
Thermal management is handled by an internal 40 mm fan mounted at the rear of the housing. Air is drawn in through the hexagonal front grille and exhausted at the cable side, giving the FSP220-50FGBBI the characteristics of a robust 40mm fan cooled power supply suitable for dense 1U racks and fan-limited industrial enclosures.
Environmental robustness, EMC and reliability
The environmental specification lists a wide operating temperature range from 0 °C to +50 °C, with storage from −20 °C to +80 °C and operating humidity up to 85 % non-condensing. The unit passes vibration levels of 3.13 g RMS and shock tests up to 40 g storage and 10 g operating, making it suitable for use in mobile and industrial installations.
From an EMC perspective, the design is FCC CISPR22 Class B compliant, meeting FCC Part 15 Class B at 115 VAC and CISPR 22 Class B at 230 VAC. This simplifies system-level compliance for OEMs integrating the FSP220-50FGBBI power supply into finished equipment.
Reliability calculations based on MIL-HDBK-217 predict MTBF 100000 hours reliability at 25 °C, full load and nominal input voltage, underscoring the suitability of this PSU for 24/7 industrial and communication systems.
Typical applications
- Mini and 1U industrial PC power supply for factory automation, vision systems and edge computing nodes.
- Compact servers and network appliances where 220 W is sufficient and high efficiency plus low noise outputs are required.
- Communication and telecom systems that benefit from the PSU’s active PFC circuit, wide AC input range and strong EMC performance.
- Embedded controllers and OEM equipment needing a reliable, globally deployable ATX PC power supply with full protections and long service life.
Conclusion
The FSP220-50FGBBI power supply delivers an excellent balance of size, efficiency and robustness for designers of compact industrial and embedded systems. As a 220W ATX switching power supply with active PFC circuit, full range 90-264Vac input, comprehensive protection set and proven MTBF 100000 hours reliability, it offers a dependable foundation for mini IPCs, 1U servers and automation equipment that must run reliably around the clock while remaining FCC CISPR22 Class B compliant in demanding environments.
