This document describes the characteristics and performance of a 90 W wide range input AC-DC adapter based on asymmetrical half-bridge topology (AHB).
The converter comprises a two-stage approach: a PFC front-end stage using the L6563 TM PFC controller and a DC-DC stage that implements the asymmetrical half-bridge (AHB) topology driven by the L6591, the new PWM controller dedicated to this architecture.
Thanks to the AHB topology, the system offers good electrical performance (EPA 2.0 compliant) with a low-voltage and high-current output (12 V - 7.5 A).
The order code for this demonstration board is EVL6591-90WADP.
| Manufacturer | STMicroelectronics |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | AC/DC SMPS - Single Output |
| Eval Board Part Number | 497-8335-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 |
7.5 A
|
| Output Power |
90 W
|
| Features |
Light Load Mode
Over Current Protection PFC Shutdown, Enable, Standby Soft Start Under Voltage Protection, Brown-Out |
| Efficiency @ Conditions |
>84%, 230V in, 12V @ 1.9 ~ 7.5 A
>84%, 115V in, 12V @ 1.9 ~ 7.5 A |
| No-load Input Power @ Voltage |
225 mW @ 115 V
290 mW @ 230 V |
| Switching Frequency |
100 kHz
|
| Internal Switch |
No
|
| Component Count + Extras |
123 + 2
|
| Voltage In |
88 ~ 264 VAC
|
| Design Author |
STMicroelectronics
|
| Application / Target Market |
Power: AC Adapters
|
| Main I.C. Base Part |
L6563
L6591 |
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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