Ebyte GQ12-120100-HG is an industrial-grade 12W AC-DC step-down switching power adapter delivering a stable 12V/1A output from a wide 90-264V AC input, featuring ≤0.3W ultra-low standby power and built-in multi-layer circuit protections.
| Main Parameter | Specification / Performance | Technical Remarks |
|---|---|---|
| Model Number | GQ12-120100-HG | Compact wall-mount leaded power adapter |
| Input Voltage Range | 90 ~ 264 V AC | Universal nominal range: 100~240V AC (47-63Hz) |
| Rated Output Power | 12 W | Continuous load capability at full ambient range |
| Output Voltage/Current | 12V DC ±5% / 1 A | Step-down regulated output via barrel plug |
| Average Efficiency | 77.75% | Measured at standard 115V AC / 230V AC input |
| Standby Power Consumption | ≤ 0.3 W | Ultra-low energy loss at zero-load condition |
| Inrush Peak Current | 40A @ 100VAC / 50A @ 240VAC | Cold start maximum transient peak current |
| Circuit Protections | Overcurrent, Short-circuit, Surge | Auto-recovery (hiccup mode) for hardware safety |
| Physical Dimensions | 60.6 * 29 * 40 mm | Space-saving layout optimization for tight panels |
Download Manual
Technical Specifications
- Output: 12V DC ±5% @ 1A max (12W)
- Ripple Noise: ≤200mVp-p at full load
- Inrush Current: 40A peak (100VAC), 50A peak (240VAC)
- Hold-up Time: ≥3ms at 100-240V input
- Connector: 5.5×2.1mm barrel plug (center positive)
- Safety Standards: CE certified
- Operating Temp: 0°C to +40°C ambient
Protection Features
- Overcurrent protection (1.1-2× rated current)
- Output short-circuit protection with auto-recovery
- Input fuse protection
- Output overvoltage clamp
Compliance & Certifications
- CE Marking (LVD & EMC)
- RoHS compliant
- Designed to EN 55032/55035 standards
Application Scenarios
Edge Gateway Power Distribution
Industrial IoT gateways deployed on factory floors face severe grid instability caused by inductive kickback from high-power electric motors. The GQ12-120100-HG mitigates this problem by supporting a wide input voltage range of 90-264V AC. This ensures that even during temporary voltage drops or brownouts down to 90V AC, the internal step-down topology continues to deliver a rock-solid 12V DC output, preventing gateway resets and subsequent sensor data gaps.
Commercial Access Control & Security Nodes
Outdoor security equipment and perimeter access control hubs are regularly exposed to transient lightning surges line-to-line. The integrated surge protection mechanism of this adapter, engineered to handle an inrush current of up to 50A at 240V AC, clamps hazardous high-voltage spikes immediately. This protection barrier safeguards sensitive digital logic controllers downstream, preventing board-level burnouts and reducing maintenance cycles.
Industrial Remote I/O Data Concentrators
In distributed control systems, small cabinet footprints require dense spacing, which causes heat to accumulate quickly. The GQ12-120100-HG features a 77.75% high conversion efficiency coupled with an ultra-low no-load power consumption of ≤0.3W. This minimizes thermal losses inside closed enclosures, preventing thermal runaway in adjacent analog-to-digital signal modules while ensuring maximum system energy conservation during idle operation periods.
FAQ
Q: How does the GQ12-120100-HG handle an output short-circuit condition at the hardware layer?
A: When an output short-circuit occurs, the internal PWM controller senses the sudden drop in voltage and enters a continuous hiccup protection mode. This safely limits the output current to between 1.1 and 2 times the rated current threshold. Once the short-circuit condition is removed, the power supply automatically clears the fault state and recovers to normal 12V DC output without requiring a manual power cycle or risking thermal destruction.
Q: What are the input electrical effects of the maximum 50A cold-start inrush current at 240V AC?
A: The peak inrush current of 50A at 240V AC occurs purely transiently over a few milliseconds during a cold start due to the charging of the primary bulk filter electrolytic capacitor. Designers must select upstream circuit breakers or slow-blow input fuses with a sufficient I2t rating to prevent nuisance tripping during initial system power-up sequences when multiple power supplies share an AC line bus.
Q: Why is the output ripple noise specification of less than 200mVp-p important for sensitive measurement systems?
A: The output ripple noise of less than 200mVp-p represents the peak-to-peak AC switching noise superimposed on the 12V DC rail at full load. While perfectly adequate for digital logic, routers, and relays, if this adapter is used to power high-precision analog-to-digital converters or sensitive RF sensors, an external LC low-pass pi-filter or a dedicated linear regulator should be added close to the load to further suppress switching transients.
