DC-DC CONVERTERS AND BATTERY CHARGERS
SDC / STEP / MPC — non-isolated DC-DC converter
Country: Netherlands · Model: SDC / STEP / MPC
SDC, STEP and MPC non-isolated DC-DC converters share a common negative and step DC voltage down or up in vehicles, marine vessels and industry. SDC step-down units take 20–35 V and deliver 13.6 V at 5–60 A, enough for a 12 V radio, audio unit or fridge in a truck with a 24 V system.
- SDC (step-down)
- input 20–35 V, output 13.6 V, 5–60 A
- STEP (step-up)
- input 9–18 V, output 24–25 V, 1–20 A, efficiency ~92%
- MPC
- 24→12 V, 5–20 A, 3-stage charger mode
- Isolation
- none, common negative
Technical specifications
| SDC (step-down) | input 20–35 V, output 13.6 V, 5–60 A |
|---|---|
| STEP (step-up) | input 9–18 V, output 24–25 V, 1–20 A, efficiency ~92% |
| MPC | 24→12 V, 5–20 A, 3-stage charger mode |
| Isolation | none, common negative |
| Customs codes (for reference) | |
| HS code | 8504.40 |
| UKTZED code (Ukraine) | 8504409000 |
| CN code (EU) | 85044095 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
Tapping 12 V from one of a truck’s two batteries unbalances them and one battery soon fails, and an SDC converter removes that problem. STEP step-up units run from 9–18 V and deliver 24–25 V at 1–20 A with about 92% efficiency, for running 24 V equipment off a 12 V vehicle. MPC converts 24 V to 12 V at 5–20 A and can also work as a 3-stage charger, so it charges a 12 V battery from a 24 V system. The housings are compact, and there is no galvanic isolation between input and output. Input and output negatives are tied inside, so the series suits only negative-ground systems.
How to choose
The direction of conversion sets the series, SDC for 24→12 V and STEP for 12→24 V. Size current by the peak load with margin, up to 60 A for SDC and up to 20 A for STEP. If the 12 V side has its own battery, use an MPC with its 5–20 A charging mode instead of an SDC. When grounds must stay separate or the source is 48 V, you need the isolated IDC with > 400 V RMS isolation and 36–72 V input.
Request a price and lead time
SDC / STEP / MPC — non-isolated DC-DC converter. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How do I run a 12 V load from a 24 V system?
An SDC step-down unit takes 20–35 V and outputs 13.6 V at 5–60 A.
How efficient are the STEP step-up converters?
About 92% at 24–25 V output.
Can the MPC charge a battery?
Yes, the MPC has a 3-stage charger mode at 5–20 A.
Will an SDC work on a boat with an isolated DC system?
No, SDC, STEP and MPC tie input and output negatives together. An isolated system needs the IDC with > 400 V RMS isolation.
Similar products
REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.