Key facts
- Brand
- STMicroelectronics
- Model
- AN2640
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-06
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STMicroelectronics AN2640 Intelligent Multipower Digital Ballast Application Note
This application note describes an electronic ballast designed for the T5 fluorescent lamp family, supporting 24 W, 39 W, 54 W, and 80 W lamps. The system utilizes an ST7FLIT19B 8-bit microcontroller to manage lamp recognition and control a boost converter (PFC) and a half-bridge inverter. The design ensures zero voltage switching and efficient power factor correction.
Read onlineSTMicroelectronics AN2640 specifications
| Supported Lamp Powers | 24 W, 39 W, 54 W, 80 W |
|---|---|
| Output Voltage | 420 V |
| Boost Inductance | 2 mH + 5% |
| Startup Capacitor | 10 nF |
| Power Switch | STP6NK60Z |
| Rectifier | STTH1L06 |
Source: STMicroelectronics AN2640 Intelligent Multipower Digital Ballast Application Note
All STMicroelectronics AN2640 documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
Which fluorescent lamps can this ballast drive?
The ballast is able to recognize and drive lamps within the T5 fluorescent family, specifically 24 W, 39 W, 54 W, and 80 W models.
From: STMicroelectronics AN2640 Intelligent Multipower Digital Ballast Application Note
What is the regulated DC output voltage?
The system regulates the DC output voltage to 420 V.
From: STMicroelectronics AN2640 Intelligent Multipower Digital Ballast Application Note
What is the output voltage of the ballast?
The regulated DC output voltage is 420 V.
Which MCU controls the ballast and PFC stages?
The ST7FLIT19B 8‑bit microcontroller controls both stages.