Installation Guide for AC-DC Brick Power Supply

1. Safety Precautions

1.1 General Safety

• Power Off Before Installation: Always disconnect the power source before wiring.
• Use Proper Insulation: Ensure all wiring is well insulated to prevent electrical hazards.
• Follow Electrical Standards: Comply with local electrical safety regulations.
• Proper Ventilation: Avoid installing the power supply in enclosed spaces without airflow.

1.2 Electrical Safety

• Grounding Required: Connect the ground terminal properly to avoid electrical shocks.
• Voltage Compatibility: Ensure the input voltage is within the rated operating range of the power supply.
• Check Load Capacity: Do not exceed the maximum rated power output.

2. Installation Procedure

2.1 Mounting the Power Modul

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1. Select a flat, heat-resistant surface.
2. Secure the module using screws or DIN rail mounting.
3. Maintain at least 10mm clearance around the unit for heat dissipation.

3. Wiring Connections

3.1 AC Input Connections

Pin NumberLabelDescription

1 AC (L) Connect to Live (L) of AC mains

2 AC (N) Connect to Neutral (N) of AC mains

3 Earth Connect to Ground (GND)

Use properly rated cables for AC input connections to handle the required current and voltage.

3.2 DC Output Connections

Pin Number Label Description

4 Vout+ Positive DC output terminal

5 Vout- Negative DC output terminal

Ensure correct polarity when connecting the output to avoid damage to connected devices.

3.3 Remote Sensing (Optional, If Available)

Pin Number Label Description

6 +S Positive remote sense

7 -S Negative remote sense

Note: If remote sensing is not used, short +S to Vout+ and -S to Vout- to avoid instability.

3.4 Voltage Adjustment (Optional, If Available)

Pin Number Label Description

8 TRIM Output voltage adjustment

Using TRIM: A resistor between TRIM and +S increases voltage, while a resistor between TRIM and -S decreases voltage.

4. Startup Procedure

1. Verify all connections before powering on.
2. Ensure the input voltage is within the specified range.
3. Turn on the AC power and check the output voltage with a multimeter.
4. Connect the load only after verifying stable output.

5. Cooling Requirements

• Passive Cooling: Ensure sufficient airflow around the power module.
• Conduction Cooling: Attach the module to a heat sink or metal plate for heat dissipation.
• Forced Air Cooling: Use an external fan if the unit operates at high loads.

6. Troubleshooting

Issue Possible Cause Solution

No output voltage Incorrect AC input wiring Check wiring and power input

Overheating Poor ventilation or excessive load Improve cooling or reduce load

Voltage fluctuation Input voltage instability Ensure a stable AC supply

Short circuit protectionOutput is shorted Disconnect and check the load circuit

7. Recommended Application Circuit

To ensure proper operation and EMC compliance, use the following external components:

Component Specification

Fuse (F1) 10A, 250V

MOV (RV1) 14D 620V

X-Capacitors (CX1-CX3) 1µF, 250VAC, X2

Y-Capacitors (CY1-CY8) 1000pF, 250VAC, Y2

Common Mode Inductors (L1, L2) 6.0mH, ≥7.5A

Electrolytic Capacitors (E1, E2) 450V, 330µF

8. Storage & Handling

• Storage Temperature: -40°C to +125°C
• Humidity Range: 5% to 95% (non-condensing)
• Avoid excessive moisture, dust, or physical impact.

9. Warranty & Support

• Warranty: Typically 2 years, covering manufacturing defects.
• Customization Available: Some manufacturers offer custom power configurations.

For technical support, contact the manufacturer’s service team. .

10. Wiring Diagram

Below is a simplified wiring diagram for installing an AC-DC brick power supply.

ASCII Representation

AC Input (L, N, Earth) DC Output (V+, V-)

┌───────────────────────┐ ┌──────────────────┐

│ AC-DC Power Module │ │ Load Device │

│ ┌──────┐ ┌──────┐ │ │ ┌──────┐ ┌──────┐ │

│ │ L │ │ N │ │ │ │ V+ │ │ V- │ │

│ └──────┘ └──────┘ │ │ └──────┘ └──────┘ │

│ AC Input Terminals │ │ │

│ ┌──────┐ ┌──────┐ │ ──────────────────┘

│ │ Vout+ │ │ Vout-│ │

│ └──────┘ └──────┘ │

│ DC Output Terminals │

│ ┌──────┐ ┌──────┐ │

│ │ +S │ │ -S │ │ (Optional Remote Sensing)

│ └──────┘ └──────┘ │

│ Remote Sense Pins │

└───────────────────────┘

│ │

│ └────────────── Vout- to Load (-)

└────────────────────── Vout+ to Load (+)