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12V 4.5A DC-DC Buck Converter (D36V50F12) — Efficient 12V Power from 13.3–50V
Need a reliable 12V rail from higher-voltage batteries or power supplies? The D36V50F12 is a powerful synchronous switching step-down (buck) regulator that accepts up to 50V input and outputs a fixed 12V supply—ideal for robotics, automation, 12V accessories, and embedded systems where efficiency matters.
- High-efficiency DC-DC conversion: significantly less heat than linear regulators when stepping down from 24V/36V/48V sources.
- 4.5A capability: great for moderate-to-large 12V loads (continuous current depends on cooling and wiring).
- Built-in protection: reverse-voltage protection, over-current/short-circuit protection, and thermal shutdown for safer builds.
- Soft-start: helps reduce inrush current and gently ramps the 12V output on power-up.
- Power control & monitoring: use EN to enable/disable the regulator and PG for a “power-good” status signal.
For best results at higher currents: use thick/short wires, solid connectors (avoid thin breadboard jumpers), and provide airflow around the board.
Why/Benefits
Cleaner 12V, less heat
- Efficient step-down from common supplies (24V/36V/48V within spec)
- Helps prevent overheating compared to linear regulation
- Stable 12V output for sensitive modules and accessories
Project-ready features
- Reverse protection for wiring mistakes
- EN pin for standby/remote shutoff
- PG pin for monitoring/reset logic
Technical specifications
| Input voltage | 13.3V to 50V (minimum depends on dropout under load) |
|---|---|
| Output voltage | 12V fixed (≈4% accuracy) |
| Continuous output current | Up to 4.5A (thermally dependent) |
| Reverse voltage protection | Yes |
| Max quiescent current | 4 mA |
| Switching frequency | ~500 kHz under heavy loads |
| Board size / weight | 1″ × 1″ board / ~7 g |
Pinout & power notes
- VIN → connect to input positive (13.3–50V)
- GND → connect to input ground
- VOUT → regulated 12V output to your load
- EN → enable/disable control (optional)
- PG → power-good status output (optional)
Tip: If your load is inductive (motors/solenoids), add proper flyback protection on the load side and consider a bulk capacitor near the load.
FAQ
-
Can I use this from a 12V battery?Usually not ideal—this is a step-down regulator and needs input higher than the output. For 12V output, your input must stay above the minimum (around 13.3V, depending on load).
-
Why does my output dip when the load starts?Voltage drop is commonly caused by thin/long wiring or a weak input source. Use thicker wire, shorter runs, solid connectors, and add a bulk capacitor near the load.
-
Do I need cooling?At higher currents, yes—airflow and thermal conditions affect continuous output current. If the module gets too hot, usable current will decrease.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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