Product overview and engineering role
The SimtoLink supercapacitor buffer supply uses a high power-density store to take up a brief bus sag and a pulse load. It holds a regulated rail for milliseconds to seconds for a servo drive, a solenoid manifold, or a gate, and it can sit as the short tier beside a lithium UPS or the grid.
Ratings follow the nameplate and the hardware specification. SimtoLink can provide charge and discharge curves, a life note, and a derating note. Volume orders can set the capacitor string and the terminal style.
Reliability and field fit
Electrical-safety and EMC items follow industry practice. The supply hiccups on a short circuit and shuts down on overtemperature. The build leaves room for heat and for creepage.
Size the pulse-current peak and the duty cycle so the capacitor stays inside its temperature rise and voltage window. Before it goes into service, SimtoLink recommends a step-load test and an insulation spot check.
Key hardware parameters
The table is a typical build of this buffer supply, for a selection note or a tender clause. A wider range, redundant power, or an intrinsically safe version is quoted separately; ask SimtoLink for the hardware specification and the installation and commissioning guide. Order codes in the family can differ slightly. The nameplate and the papers in the carton govern.
| Parameter | Specification | Notes |
|---|---|---|
| Input range | DC 18～75V | Wide input |
| Output | DC 5V/12V/24V | Regulation ±1% |
| Power | 240W | Derating curve |
| Isolation withstand | 4242 VDC | Reinforced insulation |
| Efficiency | >88.9 % | Half load |
| Protection | Short-circuit hiccup | Automatic recovery |
| Ripple | <116 mVpp | 20 MHz bandwidth |
| Operating temperature | -32～77 ℃ | Derating |
| Certification | ATEX | Optional by industry |
| MTBF | >330,000 hours | MIL-HDBK-217 |
Typical applications
Four jobs this buffer supply is usually bought for, so a design and a return case can be written against them:
Servos and valve manifolds
It takes the current spike when several axes accelerate together, so the main supply and the cables see less stress.
Turnstiles and platform screen doors
A high pulse current at the instant the door opens, so the control bus does not collapse.
Base stations and RF front ends
It smooths the bus swing from a transmit burst, which helps power-amplifier efficiency.
Alongside a lithium UPS
The supercapacitor takes pulses inside a second. The lithium pack holds the longer outage, so cycle life lasts longer.
Installation, grounding, and maintenance
- Connect bus and load with the marked polarity. Do not mate or unmate a high-current terminal while it is live.
- Keep the air path around the capacitor bank open. In heat, run on the derating curve.
- Measure equivalent series resistance and capacity loss on a schedule, and plan a replacement as the life threshold approaches.
- On a long shutdown, discharge or hold voltage as the specification says, so the pack does not sit overvoltage.
- In parallel with the main supply, confirm the precharge path and the inrush limiter are intact.
Ordering, documentation, and support
A hardware specification, outline drawings, a wiring table, and an example project are available for this buffer supply. Volume orders can include a sample review and inspection on the factory floor. Warranty and calibration follow the contract and the documents packed with the unit.
Related reading
Other power modules in this family: