solution key features product key features
based on leading edge power supply ics, st offers an
advanced smps architecture designed for high-end lcd
and pdp tvs.
the architecture is based on an innovative front-end
pfc stage, a high efficiency multi-resonant half-bridge
converter stage and an auxiliary low consumption flyback
converter, all supported by st’s most competitive power
discrete components.

advanced ac-dc converter for high-end lcd and pdp flat panels
high-efficiency smps using
half-bridge resonant topology
n universal input mains ( 90 - 264vac )
n multiple output voltages:
n 3.3v, 5v, 12v and 24v @ 200w (lcd tv)
n 3.3v, 5v, 75v and 200v @ 400w (pdp tv)
n overall efficiency up to 93% at full load and nominal
mains voltage
n small form factor with very high power density
n low standby consumption
n < 0.5w @ 230vac
n < 0.3w @ 115vac
n pre-regulator stage: l6563
n resonant stage: l6599
n auxiliary power supply: viper12a or viper22a
n mains harmonics in compliance with en61000-3-2
specifications
n emi meets en50022 class b standard
n meets en60065 safety specifications
n simple resonant transformer with integrated
magnetic approach
n l6563: advanced tm pfc
n over-voltage protection
n tracking boost operation
n voltage feed-forward
n inductor saturation detector
n l6599: high voltage zvs hb resonant controller
n two levels of over-current protection
n latched disable input
n burst-mode operation at light load
n brownout protection
n viper12a and viper22a: off-line primary switches
n internal power mosfet (600v)
n high voltage start-up
n over-temperature protection
n over-current protection
n over-voltage protectioncontrollers for smps in lcds and pdps
the front-end pfc pre-regulator (boost topology)
features the l6563 controller operating in fot (fixed
off-time) mode. the pfc not only delivers a stable
400vdc bus to the downstream converters, but also
reduces mains harmonics, meeting the requirements of
en61000-3-2 and jeida-miti regulations.
the core of the architecture is based on the advanced
multi-resonant half-bridge converter l6599 which
typical application schematic
© stmicroelectronics - march 2007 - printed in italy - all rights reserved
the stmicroelectronics corporate logo is a registered trademark of the stmicroelectronics group of companies. all other names are the property of their respective owners.
for selected stmicroelectronics sales offices fax:
china +86 21 52574820; france +33 1 55489569; germany +49 89 4605454; italy +39 02 8250449; japan +81 3 57838216; singapore +65 64815124;
sweden +46 8 58774411; switzerland +41 22 9292900; united kingdom and eire +44 1628 890391; usa+1 781 861 2678
full product information at

order code: flsmps0307
provides full system protection, multiple regulated
outputs and direct control of the pfc stage, increasing
system efficiency at any load condition.
an auxiliary flyback converter based on the viper12a
or viper22a off-line primary switch completes the
architecture. the flyback converter is mainly intended for
microprocessor supply and display power management
operation.
l6563 advanced tm pfc
high-end ac-dc adapters/chargers, desktop pcs, servers,
iec61000-3-2 or jeida-miti compliant smps
so-14
l6599d
high voltage hb resonant controller
lcd and pdp tv smps, desktop pcs, entry-level servers,
telecom smps, ac-dc adapters, open frame smps
so-16
l6599n pdip-16
viper12as-e low power off-line primary switch with internal
power mosfet (5-13w)
off-line power supplies for battery charger adapters, standby power
supplies for tvs or monitors, auxiliary supplies for motor control
so-8
viper12adip-e pdip-8
viper22as-e low power off-line primary switch with internal
power mosfet (7-20w)
off-line power supplies for battery charger adapters, standby power
supplies for tvs or monitors, auxiliary supplies for motor control
so-8
viper22adip-e pdip-8
part number description applications package
st’s smps evaluation boards for lcds and pdps
eval6599-200w 200w with 3.3v, 5v, 12v and 24v output evaluation board lcd tv smps
eval6599-400w-s 400w with 200v output evaluation board pdp tv smps
eval6599-400w-t* 400w with 200v and 75v output evaluation board pdp tv smps