☀️ 5A Buck MPPT Power Module — Constant Voltage / Constant Current (CV/CC)

Compact non-isolated buck regulator with true CC/CV control and MPPT setpoint. Ideal for solar charging, bench supplies, battery chargers, and high-power LEDs. Dual display shows Vin/Vout/Iout/Watts at a glance.

🌟 Highlights

  • 🔋 Wide Input: 6–36 V DC (buck step-down)

  • 🎛 Adjustable Output: 1.25–32 V (default ~5 V) & 0.05–5 A (default limit ~3 A)

  • ☀️ MPPT Set Range: 6–36 V (track panel Vmp by setting the MPPT voltage)

  • 📟 Dual Display: Input V, Output V, Current, Power

  • ⚡ High Efficiency: up to 95% (load/ratio dependent)

  • 🛡 Protections: short-circuit, over-temperature (auto output cut-off)

Buck only: Vout must be lower than Vin.

📐 Specifications

  • Module type: Non-isolated buck (step-down)

  • Input voltage (Vin): 6–36 V

  • Output voltage (Vout): 1.25–32 V (continuous adjust; default ≈ 5 V)

  • Output current (Iout): 0.05–5 A (default limit ≈ 3 A)

  • “Turn-light” threshold: 0.01–5 A (default ≈ 0.3 A)

    • (Charge status: red = charging, green = full when Iout drops below the threshold.)

  • Operating temp: −40…+85 °C (derate for airflow/heatsinking)

  • Switching freq: ~180 kHz

  • Efficiency: up to 95%

  • Quiescent / working current: module display & control, low draw

  • Size: 60 × 31 × 22 mm (PCB, without meter/shell)

  • Mounting: 4× Ø3 mm screws

🧠 About MPPT on this Module

This board lets you set an MPPT voltage (typically your panel’s Vmp) so the converter holds the input around that value while delivering CC/CV to the battery/load.

Typical Vmp examples: 18–19 V (12 V-class panel), 36–38 V (24 V-class panel).
Always check your panel label or datasheet.

🔧 Quick Setup

A) As a bench buck supply (CV only)

  1. IN+/IN- → DC source (Vin > Vout by ≥0.5–1 V).

  2. Set Vout with the voltage adjust.

  3. Use within current/power limits; add heatsink/airflow if warm.

B) As a battery charger (CV/CC with “full” indicator)

  1. With no load, set Vout = float/charge voltage for your chemistry.

  2. Short OUT+/OUT- through a meter (10/20 A range) and set current limit to the desired charge current.

  3. Set turn-light threshold (e.g., 0.1–0.3 A) so green LED = “full”.

  4. Important: Add a series blocking diode on OUT+ (module has no anti-backflow).

  5. Connect battery to OUT+/OUT- (connect input first, then battery).

C) As a solar MPPT charger

  1. Connect panel to IN+/IN- (observe polarity).

  2. Set MPPT voltage ≈ panel Vmp.

  3. Set Vout = battery charge/float voltage.

  4. Set current limit to safe charge current for the battery.

  5. Add blocking diode on OUT+; fuse appropriately.

D) As a constant-current LED driver

  1. With no load, set Vout ≈ LED string Vf(max).

  2. Set current limit = LED If.

  3. Connect LEDs; verify CC regulation (current steady, “CC” active).

🛡️ Safety & Wiring Notes

  • Reverse-polarity (input): Not built-in. Add a diode or ideal-diode MOSFET if needed.

  • Backfeed (output): Not protected. Use a series diode on OUT+ when charging batteries or when the load can feed back.

  • Grounds: Do not tie IN- and OUT- together externally; CC sensing requires separation.

  • Thermals: For >3.5 A or >50 W, use the heatsink and provide airflow; derate to ≤80% of max for continuous use.

  • Buck rule: Vout must remain below Vin during operation.

📦 Package Includes

  • 1 × 5A Buck CV/CC MPPT Module

💥 Volume Discount — Buy More & Save

  • 10% OFF when you buy 2 units

  • 15% OFF when you buy 3 units

  • 20% OFF when you buy 4 or more units
    Discount auto-applied.

🇺🇸 Premium Support & Shipping

  • 🇺🇸 US Stock / Fast Shipping — 2–4 day delivery from Oklahoma, USA. Your purchase supports a US-based small business.

  • 🧪 Quality Checked & Tested — Spot-checked before shipping.

  • 💬 Local Support — English help within hours, not days.

  • 🔁 Easy Returns — 30-day returns; we pay return shipping.

  • 📦 Professional Packaging — Safe delivery, 100% guaranteed.


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