Key Takeaways
- The FSP250-52FGB power supply is a 250W FLEX 24Vdc input power supply designed as an industrial level switching power supply for harsh, space-constrained IPC builds.
- It supports a DC -18V to -36V input range, making it a practical DC -24V input PSU for battery-backed and DC-bus systems.
- Built for clean power delivery with low ripple and noise output across the major rails (+3.3V, +5V, +12V, -12V, +5Vsb).
- Protection coverage includes over current protection, over temperature protection, and over voltage protection—plus short-circuit protection as described on the product landing page.
- Optimized for reliability-focused deployments with 100000 hours MTBF reliability and industrial application targeting as a workstation power supply and IPC controller power supply.
Industrial PCs and automation controllers don’t fail gracefully—when the power subsystem is unstable, the entire line can stop. The FSP250-52FGB power supply is built for exactly those environments: a compact Flex ATX platform that accepts DC input, delivers regulated multi-rail outputs, and prioritizes protection and endurance for long-running systems.
Product Positioning from the Official Landing Page
According to the TPS product landing page, the FSP250-52FGB is presented as a durable, high-performance 250W Flex ATX (1U) unit engineered for demanding environments, designed for a wide DC input range and featuring protection functions (OCP/OVP/OTP and short-circuit). The same page also highlights production screening such as burn-in and Hi-Pot testing, plus an MTBF target of 100,000 hours at 25°C—useful talking points when you’re qualifying a PSU for regulated or uptime-critical deployments.
The landing page further notes a compact mechanical profile (150 × 81.5 × 40.5 mm) and a built-in quiet fan, supporting integration into tight IPC chassis where airflow is managed and cable routing space is limited—especially relevant if you’re choosing a PSU for an industrial 1U-style enclosure.
DC Input Architecture: Built for -24V Industrial Buses and Battery Systems
This unit is a DC -24V input PSU by design, specified for DC -18V to -36V input range operation (with input current listed at -24Vdc @ 18.0A). That makes it a natural fit for installations where a DC bus or battery system is already present—common in automation cells, mobile or remote systems, and cabinet-based industrial networks.
In practical terms, this DC -24V input PSU approach reduces conversion steps in DC-native environments and can simplify overall system power architecture compared with AC-only supplies—particularly when the upstream infrastructure is standardized around 24Vdc distribution.
Outputs and Signal Quality: Low Ripple for Sensitive Industrial Loads
The FSP250-52FGB provides standard PC-style rails (+3.3V, +5V, +12V, -12V, +5Vsb) with defined current limits, regulation targets, and ripple/noise limits. If you’re powering SSDs, fieldbus cards, and mixed-signal I/O, the documented low ripple and noise output limits are a key stability factor for minimizing unexplained resets and data corruption during load transients.
Additionally, the datasheet calls out that the combined +3.3V and +5V output should not exceed 80W—helpful when budgeting loads for legacy peripherals and older backplanes.
Protection Stack: Designed to Fail Safe, Not Fail Loud
Industrial builds need protection behavior that is predictable during wiring faults, fan blockage, or unexpected load events. The datasheet explicitly lists over current protection, over temperature protection, and over voltage protection as core features.
On the TPS landing page, protection coverage is expanded in plain language to include short-circuit protection as well—an important safeguard in cabinets where harness wear, connector strain, or conductive dust can occasionally create fault conditions.
Cable and Chassis Integration: “Easy-Swap” Cable Management
Maintenance speed matters in production. The datasheet describes “easy-swap cable management features,” supporting a cable management design mindset where service teams can reduce downtime by simplifying harness handling and replacement procedures.
Reliability and Environmental Readiness for Industrial Operation
For long-life systems, the unit specifies MTBF of 100,000 hours of continuous operation at 25°C (max output load), aligning with the requirement for 100000 hours MTBF reliability in industrial deployments.
Environment specs include a working temperature listed at 50°C and storage temperature from -20°C to +80°C, supporting deployments where cabinets may see elevated ambient heat in summer and cold storage/transport conditions in winter—one practical reason many engineers classify it as a wide operating temperature industrial PSU.
The datasheet also notes design considerations up to 5,000 meters operating altitude, which can be relevant for high-altitude facilities where cooling and derating considerations come into play.
Typical Use Cases
- Workstation power supply deployments where a DC bus is available and serviceability is important.
- IPC controller power supply integration for production-line machines, automation controllers, and edge compute nodes.
- Battery-backed systems using a DC -24V input PSU to minimize conversion steps and simplify power architecture.
FAQ
Is the FSP250-52FGB an AC-input PSU?
No—this model is built as a DC -24V input PSU with a specified DC -18V to -36V input range, intended for DC-bus or battery-powered industrial systems rather than direct mains input.
What makes it an industrial level switching power supply?
The datasheet positions it as an industrial level switching power supply with defined protection features, regulated multi-rail outputs, and an MTBF target suited to continuous operation.
Does it include protection against overloads and overheating?
Yes. The feature list includes over current protection, over temperature protection, and over voltage protection. The TPS landing page also describes short-circuit protection behavior for fault conditions.
How do I size loads for the rails?
Use the output rating table for each rail’s maximum current and keep the combined +3.3V and +5V power within the stated limit. For noise-sensitive cards and storage, the documented low ripple and noise output limits are also useful for validation planning.
Is it suitable for high-uptime industrial systems?
It is specified with 100000 hours MTBF reliability at 25°C, which aligns with many industrial qualification targets for a high reliability industrial power supply in 24/7 operation.
Need Integration Support?
If you’re selecting a 250W FLEX 24Vdc input power supply for an automation cabinet, workstation, or IPC controller, TPS Elektronik can support part selection, cable planning, and documentation to speed up qualification—especially when you require a high reliability industrial power supply with defined protections and stable rails.
