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STMicroelectronics L4986A | Demoboard EVL4986A-1KWBL
Low THD-High Efficiency, 1KW Bridgeless CCM-PFC pre-regulator based on L4986A
Overview
| Topology | Power Factor Correction |
| Input voltage | 90-265 V |
| Switching frequency | 65-130 kHz |
| Output 1 | 400 V / 2.5 A |
| IC revision | 1 |
Description
The EVL4986A-1KWBL demonstration board is a bridgeless PFC pre-regulator, double boost topology, featuring 1 kW output power (400 Vdc) and wide input voltage range (90 Vac-265 Vac), based on the new L4986A peak current mode CCM power factor controller. It is intended as a front-end converter up to 1 kW, able to be compliant with IEC61000-3-2 and JEITA-MITI.The demo is designed on the double boost (Barbi) topology using two branches, each consisting of a boost stage, managing half mains cycle. Each section operates at almost fixed frequency (65 kHz).Thanks to the bridgeless approach and the L4986A control IC, the board offers high efficiency and low input current THD across the entire input voltage range. This is achieved using a low complexity schematic and fewer components compared to similar bridgeless solutions.
Features
- Input mains range: 90 to 265 Vac - frequency 45 to 65 Hz
- Output voltage / load: 400 V / 2.5 A
- Efficiency:
- above 98% at 230 Vac (full load)
- above 95.5% at 115 Vac (full load)
- above 94% between 10% and 100% of full load
- No load mains consumption: below 250 mW at 230 Vac
- Mains harmonics in compliance with EN61000-3-2 Class-A and JEITA-MITI, Class-A
- EMI in accordance with EN55022 Class-B
- Safety in accordance with EN62368
- Dimensions 145 x 160 mm, height = 35 mm
- PCB: double sided, 70 µm, FR-4, mixed PTH/SMT
Typical applications
- High power LED luminaries
- IEC61000-3-2 and JEIDA-MITI compliant SMPS in excess of 1 kW, ndustrial and medical SMPS according to IEC 60601-1-2
- Desktop PC, game console
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR 2 (V (DC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | Application | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (DC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 890303426008CS | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTBE Film Capacitors | 470 nF | 504 | – | 20 | 1 | 6.38 GΩ | -40 °C up to +85 °C | 22.5 | Carton | – | – | – | – | 630 | – | – | 26 | 9 | 18 | – | ||
 | 890324026034 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | 2.2 µF | 630 | X2 | 170 | 0.1 | 4.55 GΩ | -40 °C up to +105 °C | 22.5 | Bulk | Across the mains | – | – | – | 275 | – | – | 26 | 15 | 25 | Boxed THT | ||
 | 7448041502 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | – | – | – | – | – | – | – | – | 15 | 2 | 5 | 300 | 2100 | Nanocrystalline | 29 | 19 | 32 | THT | ||
| 750319521 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | PFC Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 890303426008CS | SPEC | |
| 890324026034 | SPEC | |
| 7448041502 | SPEC | |
| 750319521 | SPEC | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR 2 (V (DC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | Application | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (DC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|