MEAN WELL PWM & SPWM Series LED Power Supplies
Series Overview & Core Features
The PWM and SPWM series are dedicated Constant Voltage (CV) LED drivers that output a high-frequency Pulse Width Modulation (PWM) style voltage. This unique architecture is specifically designed to guarantee color temperature accuracy and brightness uniformity across parallel LED strips, even at extremely low dimming levels.
- PWM Series (Standard & Smart): The foundational lineup featuring high-frequency dimming (up to 4kHz) to eliminate visible flicker and meet strict IEEE-1789 health standards. It is available in standard analog dimming as well as digital protocols.
- SPWM Series (Next-Gen Smart): The next evolution of PWM drivers focusing heavily on flawless deep dimming (down to 0.1% ~ 1%) and cutting-edge encrypted native protocols (like KNX Data Secure).
- IP67 & Class II Design: Both series are fully encapsulated in flame-retardant plastic housings (IP67) with no earth pin (Class II), ensuring safe installation in damp, wet, or indoor architectural locations.
- Active PFC: Built-in active Power Factor Correction guarantees high energy efficiency and global regulatory compliance.
Technical Specifications
| Parameter | Specification Detail |
|---|---|
| Input Voltage | 90 ~ 305VAC (Universal) / 100 ~ 305VAC (SPWM) |
| Output Mode | Constant Voltage (CV) - PWM Style Output |
| IP Rating | IP67 (Fully potted) |
| Dimming Range | Deep dimming capability (SPWM reaches 0.1% ~ 1%) |
| Protections | Short circuit / Overload / Over voltage / Over temperature |
| Safety Standards | UL8750, ENEC, CE, CB, UKCA, EAC, KNX |
Series Power Range & Availability
Select the series based on your required wattage and smart integration needs. Typical output voltages include 12V, 24V, 36V, and 48V.
| Product Branch | Available Wattages | Core Characteristic |
|---|---|---|
| Standard PWM | 40W, 60W, 90W, 120W, 200W | Standard 3-in-1 dimming or DALI-2 control. |
| PWM-KN (KNX) | 60W, 120W, 200W | Integrated KNX protocol. Connects directly to the KNX bus. |
| PWM-IoT (Bluetooth) | 120W, 200W | Wireless Bluetooth Mesh control via smartphones. |
| SPWM (Smart PWM) | 120W | Next-gen deep dimming with advanced secure protocols. |
Application Tip: The PWM and SPWM architectures are the absolute best choice for architectural cove lighting, LED tape lighting, and decorative installations where dead spots or color shifting at low dimming levels are unacceptable.
Smart Integration & Dimming Protocols
To ensure compatibility with your building's control system, select the appropriate model suffix. By embedding the control module directly into the driver, these units eliminate the need for external gateways.
| Control Protocol / Suffix | Features & Best Usage |
|---|---|
|
Blank (e.g., PWM-120-24) |
3-in-1 Dimming (0~10V, PWM signal, or Resistance). Ideal for traditional commercial dimming systems and wall sliders. |
|
DA / DA2 (e.g., PWM-120-24DA2) |
DALI / DALI-2. The latest standard in digital lighting control, offering two-way communication for advanced lighting networks in modern office buildings. |
|
KN / KNX Data Secure (e.g., SPWM-120-24KN) |
KNX Protocol. Direct integration into KNX building automation. The SPWM series offers KNX Data Secure, an encrypted version preventing unauthorized access in secure commercial and hotel networks. |
|
BLE / TY1 / SVA (IoT Bluetooth Mesh) |
Wireless Mesh Networking. Programmable via Casambi (BLE), Tuya (TY1), or Silvair (SVA) smartphone apps. Perfect for retrofitting existing spaces without running new control wires. |
Selection Note: The IoT models allow you to control LED strips directly from a wireless wall switch or mobile device, making them incredibly versatile for high-end residential upgrades and rapid commercial deployments.
