This post explains for the transformer.
The Part Number is EE25.
The function of this semiconductor is Single stage LED driver.
Manufacturer: FPE, ETC
Preview images :
Description
EE25 is Transformer for Single stage LED driver.
A single-stage LED driver is a type of LED driver circuit that integrates both power factor correction (PFC) and LED driving functions into a single stage, as opposed to the traditional two-stage approach where PFC and LED driving are separate stages. In this context, a transformer is not typically used in a single-stage LED driver circuit.
The primary purpose of a transformer in a power supply circuit is to step-up or step-down the voltage, and it is commonly used in traditional non-isolated (flyback or forward) LED drivers. However, in a single-stage LED driver, the topology is usually based on a boost converter with power factor correction (PFC), and the transformer is eliminated to reduce size, cost, and complexity.
WINDING :
1). N1 : 2 —- 1 2UEW Φ 0.35mm 27Tx4Layer
2). N2 4 Copper foil 0.025t*7
2). N3 6—-5 Triple insulation winding wireΦ 0.6mm 14T
Totoku TIW-3 UL FILE NO.E66483 or equivalent
3). N4 8—-7 Triple insulation winding wireΦ 0.6mm 6T
Totoku TIW-3 UL FILE NO.E66483 or equivalent
4). N5 3—-4 2UEW Φ 0.25mm 25T
Applications:
1. Lighting
2. White Goods
3. metering
4. Telecom
5. industrial Controls
6. Stand-by Power
EE25 PDF Datasheet
