75W Triple Output Isolated DC Step-Down Power Supply Module

75W Triple Isolated DC Step-Down Power Supply Board

Power multiple devices simultaneously with this high-efficiency 75W Triple Output Isolated DC Step-Down Power Supply Module. Designed for engineers, hobbyists, and electronics professionals, this compact board accepts a wide AC input range (85–265V AC / 100–300V DC) and delivers three independently isolated DC output rails. Choose from three model configurations to suit your exact project needs: 5V/12V/12V, 5V/12V/15V, or 5V/12V/24V.

Made in Mainland China.

Why Choose This Power Supply Module?

• Triple Isolated Outputs — Three fully isolated DC rails eliminate ground-loop interference between connected circuits.
• Wide Universal Input — Operates from AC 85–265V or DC 100–300V, making it compatible worldwide.
• Built-In Protection — Short-circuit (hiccup mode, auto-recovery), overvoltage (>50% rated), and overload (110–170% rated power) protections safeguard your equipment.
• High Efficiency — Up to 86% conversion efficiency reduces heat generation and energy waste.
• Compact Form Factor — Measuring just 100 × 70 × 30 mm, it fits easily into enclosures and panels.
• Low Standby Consumption — Standby power draw of ≤150mW at 230VAC keeps idle losses minimal.
• Stable Regulated Outputs — Output accuracy of ±1% on the 5V and 12V rails ensures reliable performance for sensitive electronics.

Model Configurations at a Glance

Full Technical Specifications

• AC Input: 85–265V AC
• DC Input: 100–300V DC
• Frequency Range: 47–63 Hz
• Inrush Current: 10A @ 220VAC (cold start)
• Leakage Current: <2mA / 220VAC
• Standby Power Consumption: ≤150mW @ 230VAC
• Output Ripple: 150mV
• Power On/Off Overshoot: 10%
• Start-up / Rise / Hold-up Time: 2000ms / 30ms @ 115VAC; 1000ms / 30ms @ 230VAC
• Short-Circuit Protection: Hiccup mode, auto-recovery after fault removal
• Overvoltage Protection: >50% rated voltage
• Overload Protection: 110%–170% of rated output power
• Operating Temperature & Humidity: -20°C to +70°C, 20%–90% RH (non-condensing)
• Storage Temperature & Humidity: -40°C to +85°C, 10%–95% RH
• Dimensions (L × W × H): 100 × 70 × 30 mm

Package Includes

• 1 × Power Supply Module (your chosen model)

Note: Due to screen and lighting variations, the product color may differ slightly from images. Please allow ±1mm–1cm measurement tolerances.

For guidelines on electrical safety standards for power supplies and electronic components, visit the U.S. Consumer Product Safety Commission – Electrical Safety.

Frequently Asked Questions

Q: Can this 75W triple output power supply module be used worldwide?

A: Yes. The module accepts a wide AC input range of 85–265V AC (and DC 100–300V), making it compatible with electrical systems in the US, Europe, Asia, and most countries globally. Always ensure your wiring and connectors meet local electrical code requirements.

Q: What is the difference between the three model configurations (5V/12V/12V, 5V/12V/15V, 5V/12V/24V)?

A: Each model provides a different combination of three isolated DC output rails to suit various project requirements. The 5V/12V/12V model (82% efficiency) is ideal when two 12V loads are needed. The 5V/12V/15V model (83% efficiency) suits applications requiring a 15V rail alongside 5V and 12V. The 5V/12V/24V model (86% efficiency, highest) is best when a higher 24V output is required, such as for motors or industrial sensors.

Q: Are the three DC output rails electrically isolated from each other?

A: Yes. All three output rails are fully isolated from one another and from the AC input, which prevents ground loops and cross-interference — a critical feature when powering mixed or sensitive circuits from a single power source.

Q: What protections does this power supply module include?

A: The module features short-circuit protection (hiccup mode with automatic recovery after fault removal), overvoltage protection (triggers at >50% of rated voltage), and overload protection (activates at 110%–170% of rated output power). These safeguards help protect both the module and your connected devices.

Q: What output accuracy can I expect from this DC step-down power module?

A: The 5V and 12V rails deliver ±1% output accuracy with ±1% line and load regulation, making them suitable for precision electronics. The secondary output (15V or 24V depending on model) maintains ±4% accuracy with ±4% load regulation, adequate for most general-purpose applications.