DCC4812
Ultrathin DC/DC Buck converter DIN-Rail 48V to 12V @ 1 A Iout
| Quantity | Unit Price | Saving |
| 1+ | EUR 23.00 | — |
| 25+ | EUR 19.99 | -13% |
| 100+ | EUR 17.35 | -25% |
| More Quantity, More Savings. Please Quote! | ||
Key Features
- Buck converter
- 8.8mm DIN Rail width
- 1 A output current max.
- 12V output voltage (also 5V and 24V available in our shop)
- Wide input voltage:
- Uin,min=Uout+4 V
- Uin,max=48 V
- Input reverse polarity protection
- Output short proof
- Power Good Indicator: LED
Product Description
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| 16-53 V | |
| 12 V | |
| 12 W |
Logistics Data
| Weight | 0.04 kg |
| Dimensions | 89 x 9 x 53 mm |
| Country of Origin | Germany |
| HS Code | 8504409590 |
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Have a question about this product? Our engineering team is here to help.
Yes — the minimum input voltage depends on load. At full load (1 A) the input must be at least U_out + 4 V; at no load U_out + 2 V is sufficient. Nameplate U_in,max is 48 V (absolute max 53 V per spec table). So a DCC4812 needs ≥16 V at 1 A, a DCC4824 needs ≥28 V — a 24 V bus cannot drive the DCC4824 at full load.
Three fixed variants: DCC4805 outputs 5 V (4.8–5.6 V), DCC4812 outputs 12 V (11.8–12.6 V), DCC4824 outputs 24 V (23.7–24.8 V). Output voltage tolerance is ±2 % dynamic typical, with solid voltage stability across the full 0–1 A output current range.
Four protections are listed: reverse-polarity input to -48 V DC, indefinite short-circuit, open-circuit safe operation, and an input TVS diode (1SMA4758A) clamping input transients. The datasheet does not mention a separate output OVP or a thermal shutdown — at 1 A continuous above 30 °C ambient, add airflow or derate to ≤0.3 A.
At full load (1 A) the operating range is -40 °C to +30 °C. Reducing the load to 0.3 A or below extends the range to the full -40 °C to +50 °C. The datasheet doesn't specify an active thermal shutdown, so thermal management above 30 °C at full load is the user's responsibility.
Peak efficiency exceeds 90 % above 300 mA on the 12 V and 24 V variants. From the efficiency curves: DCC4824 ~97 % at U_in = 30 V, ~94 % at U_in = 48 V. DCC4812 ~96 % at U_in = 15 V, ~91 % at U_in = 48 V. DCC4805 ~92 % at U_in = 10 V, ~84 % at U_in = 48 V. Lower input-to-output ratios are more efficient. Run above 200 mA for best results.
Fast but not instantaneous. At U_in = 30 V with a 1 kHz 0–1 A current step the DCC4824 dips approximately 4 % (~23 V) before recovering well under 0.5 ms. Add local bulk capacitance at the output for load-step-sensitive devices.
Yes — DIN-rail mount, fuse-box style, only 8.8 mm cabinet width. The datasheet lists the mounting type as DIN RAIL with mounting width 8.8 mm; the rail standard is conventional top-hat (35 mm), confirm with DPS for unusual cabinets. A green Power-Good LED on the front lights when output is in regulation.
Yes — DPS customises output voltage, current limit, and TVS protection thresholds for production volumes. An engineering fee applies; contact DPS to scope your variant. Standard catalogue variants (5 V, 12 V, 24 V) ship from stock.