This note describes the characteristics and the features of a 65 W reference board, wide-range input mains, AC-DC adapter using the L6566B controller. The peculiarities of this design are the low standby input consumption (<200mW @ 265Vin AC), low cost and small size.
The topology of this converter is the classical Flyback working in continuous and discontinuous conduction mode at fixed frequency. The controller, the new L6566B, is an extremely versatile current mode primary controller ICs.
The nominal switching frequency, 80 KHz, has been chosen to get a compromise between the transformer size and the converter efficiency.
| Manufacturer | STMicroelectronics |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | AC/DC SMPS - Single Output |
| Eval Board Part Number | 497-6452-ND |
| Eval Board Supplier | STMicroelectronics |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
230 V Universal (115 / 230V) |
| Outputs and Type |
1 Isolated
|
| Voltage Out |
12 V
|
| Current Out |
5.42 A
|
| Output Power |
65 W
|
| Features |
Over Voltage Protection
PFC Short Circuit Protection Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out |
| Efficiency @ Conditions |
>82%, 230V in, 12V @ 1.35 ~ 5.42 A
>82%, 115V in, 12V @ 1.35 ~ 5.42 A |
| No-load Input Power @ Voltage |
77 mW @ 115 V
162 mW @ 230 V |
| Switching Frequency |
80 kHz
|
| Internal Switch |
No
|
| Component Count + Extras |
65 + 2
|
| Voltage In |
90 ~ 264 VAC
|
| Design Author |
STMicroelectronics
|
| Application / Target Market |
Battery Chargers
Computers LCD TV / Monitor Set-Top Boxes |
| Main I.C. Base Part |
L6566B
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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