This application note describes how to implement a high power factor offline LED driver module using devices from the VIPer family in flyback configuration and with a TSM1052 as a constant current controller. This design avoids using high voltage electrolytic capacitors and evaluates the influence of the output bulk electrolytic capacitor on overall performance. Finally, a non-electrolytic configuration is implemented.
The document details the design of an LED power supply module characterized by a high power factor (>0.9) and the avoidance of high voltage electrolytic capacitors. It utilizes a flyback configuration based on VIPer devices (VIPer17 for 3.5W and VIPer27 for 7W) with a TSM1052 constant current controller. The design aims to minimize part count and eliminate the need for bulky capacitors by using ceramic components or non-electrolytic configurations.
| Input voltage | 100 to 264 Vac |
|---|---|
| Power factor | > 0.9 @ 115 V and 230 V |
| Output power | 3.5 W to 7 W |
| Output current (average) | 0.35 A to 0.7A |
No, the design avoids using high voltage electrolytic capacitors.
The design accepts an input voltage ranging from 100 to 264 Vac.
The module generates an output power in the range of 3 W to 7 W.
The driver provides an average output current between 0.35 A and 0.7A.