S-350-36 36V/10A SMPS
36 V 10 A switch-mode power supply, 350 W, 220 V AC input, for a stepper-drive DC bus.
Overview
The S-350-36 is a switch-mode power supply taking 220 V AC and delivering 36 V DC at up to 10 A, 350 W - a voltage between the S-250-24 (24 V) and S-250-48/S-500-48 (48 V) in this range, at a power level of its own.
36 V is within the input range of every stepper drive in this catalogue's Tstep range and the DW870-DC/DW872 pair, so it isn't a mismatch for any of them - it's a middle-ground choice where 24 V leaves torque on the table at speed but 48 V is more voltage than the application calls for. 10 A covers the running current of a couple of mid-sized drives, but a stepper drive's current draw spikes during acceleration - size the supply to the peak, not the average, or the rail will sag exactly when an axis starts.
It also holds less bulk capacitance than a linear supply built around a transformer, which matters for absorbing a drive's regenerative current on deceleration; where that's a concern, the TLP-04/TLP-05 rectifier-and-filter cards build a linear supply instead.
For a different voltage in a similar power class, the S-250-24 and S-250-48 in this range run 250 W at 24 V and 48 V.
Supplied by Tiny Controls in India.
Specifications
| Output voltage | 36 V DC |
|---|---|
| Output current | 10 A |
| Output power | 350 W |
| Type | Switch-mode |
Questions
Why 36V specifically — will it actually suit my stepper drives, or is it an odd middle voltage?
It's a deliberate middle ground, not an odd choice — 36V is within the input range of every Tstep drive in this catalogue and the DW870-DC/DW872 pair, sitting between 24V (which leaves torque on the table at speed) and 48V (more voltage than most applications need).
Does the acceleration-spike sizing advice still apply at 10A?
Yes — size the supply to each axis's peak current during acceleration, not its average running current, or the rail will sag exactly when an axis starts.
Are there other voltage options in a similar power range?
The S-250-24 and S-250-48 run 250W at 24V and 48V — a similar power class, different voltages.