EVL6699-90WADP Datasheet, PDF (1/5 Pages) STMicroelectronics – 19 V - 90 W adapter with PFC for laptop computers based on the L6563H and L6699

EVL6699-90WADP
19 V - 90 W adapter with PFC for laptop computers based on the
L6563H and L6699
Data brief
Features
■ Universal input mains range: 90 - 264 V_AC -
frequency 45 - 65 Hz
■ Output voltage: 9 V at 4.75 A continuous
operation
■ Mains harmonics: meets EN61000-3-2 Class-
D and JEITA-MITI Class-D
■ No load mains consumption: according to
ENERGY STAR^® 2.0 for external power
supplies
■ Average efficiency: according to ENERGY
STAR 2.0 for external power supplies
■ Light load efficiency: according to ErP Lot 6
Tier 2 requirements
■ EMI: within EN55022-Class-B limits
■ Safety: meets EN60950
■ Dimensions: 65 x 151 mm, 25 mm component
maximum height
■ PCB: double-side, 70 µm, FR-4, mixed
PTH/SMT
Description
The architecture of the EVL6699-90WADP is
based on a two-stage approach; a front-end PFC
pre-regulator based on the L6563H TM PFC
controller and a downstream LLC resonant half
bridge converter using the new L6699 resonant
controller. Thanks to the chipset used, the main
features of this design are very high efficiency,
compliant with ENERGY STAR eligibility criteria
(EPA rev. 2.0 EPS) and very good efficiency at
light load too, compliant with the new ErP Lot 6
Tier 2 requirements. No-load input power
consumption is also very low, well within the
international regulation limits.
The controller of the LLC stage is the L6699,
integrating innovative functions such as self-
adjusting adaptive deadtime, anti-capacitive
EVL6699-90WADP
mode protection and proprietary “safe-start”
procedure preventing hard switching at startup.
The PFC stage works as pre-regulator and
powers the resonant stage with a constant
voltage of 400 V. The downstream converter
operates only if the PFC is working and regulating
its output voltage. In this way, the resonant stage
can be optimized for a narrow input voltage range
improving the efficiency of the primary side power
components.
The transformer uses the integrated magnetic
approach, incorporating the resonant series
inductance. Therefore, no external, additional coil
is needed for the resonance. The transformer
configuration chosen for the secondary winding is
centre tap.
July 2012
Doc ID 023378 Rev 1
For further information contact your local STMicroelectronics sales office.
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