EVL400W-EUPL7 12 V - 400 W adapter based on L4984, L6699 and SRK2001 Data brief No load mains consumption: < 150 mW at 230 Vac, well below European CoC ver. 5 Tier 2 limit for external power supplies Mains harmonics: meets EN61000-3-2 Class- D and JEITA-MITI Class-D EMI: according to EN55022 Class-B Safety: meets EN60950 standards RoHS compliant Description The EVL400W-EUPL7 demonstration board is a 12 V - 400 W converter, tailored for the typical Features specification of an AC/DC adapter with wide input mains range, very low power consumption at light Universal input mains voltage range: from 90 load and good average efficiency. Vac to 264 Vac The architecture is based on a two-stage frequency from 45 to 65 Hz approach: a front-end PFC pre-regulator based Output voltage: 12 V at 33 A continuous on a CCM (continuous conduction mode) boost operation PFC controller using the L4984, and a Overall efficiency at full load: > 89%, according downstream LLC resonant half-bridge converter, to ENERGY STAR 6.1 limit for computers designed around the L6699. Certified as 80Plus PLATINUM level at 115 At the secondary side, synchronous rectification Vac and GOLD level at 230 Vac in the is implemented by means of the SRK2001 that (1) CLEAResult Plug Load Solutions website assures a very high rectification efficiency with consequent small Heat Sink required. Average efficiency: > 89%, according to European CoC ver. 5 Tier 2 for external power The PFC section uses a proprietary LM-FOT supplies (line-modulated fixed-off-time) that allows control Efficiency at 250 mW > 50%, well above EuP methodology at fixed frequency operation for lot 6 Tier 2 limit for household and office boost PFC converters as long as its operating in equipment CCM. The LLC section uses the L6699, a double-ended controller specific to series-resonant half-bridge topology. The output voltage regulation is obtained by modulating the operating frequency. 1. CLEAResult Plug Load Solutions site is owned and The main focus of this demonstration board is the maintained by CLEAResult - the largest provider of light-load efficiency, achieved through the burst energy efficiency programs and services in North mode function of both PFC and LLC controllers America: with the self-adaptive deadtime of the L6699, EVL400W-EUPL7 half-bridge node transition times, which allows the maximization of the transformer magnetizing inductance, reducing the primary current at light load operation. An active high voltage start-up circuitry based on a depletion MOSFET provides a very fast start-up time and minimizes the residual consumption during normal operation to a negligible level. 2/13 DB3795 Rev 3