Upload
dan-esenther
View
219
Download
0
Embed Size (px)
Citation preview
7/27/2019 48 v, 130 W High-efficiency SMPS for LED Street Lighting-flsmpsled
http://slidepdf.com/reader/full/48-v-130-w-high-efficiency-smps-for-led-street-lighting-flsmpsled 1/2
The high eciency and long
lietime o LEDs are making them
a key player to replace current
lamp types or internal or external
lighting, so giving an extra
contribution to reducing energy
consumption.
In street lighting applications,
where higher eciency, longer
lietime and reduced maintenance
are vital or reducing costs, theadoption o LEDs is increasing.
ST’s new generation o ofine
converters eatures a two-stage
topology to meet these needs.
Based on a ront-end PFC and
an LCC resonant converter,
this innovative architecture
eliminates the need or electrolytic
capacitors.
Key features
Q Extended European Input mains
range: 177 to 277 V AC
Q Universal input mains range:
85 to 305 V AC
Q Output voltage: 48 V at 2.7 A
Q Long lietime − electrolytic
capacitors are not used
Q Overall eiciency at ull load:
better than 93%
Q No heatsinks needed
Q Saety: double insulation,
according to EN60950, SELV
Q Mains harmonics: according to
EN61000-3-2 Class-C
Q EMI: according to
EN55022-Class-B
Q Dimensions: 75 x 135 mm, 30 mm
components maximum height
Q PCB: single side, 35 μm, FR-4,
mixed PTH/SMT
Q RoHS and halogen-ree compliant
Key components
Q L6562AT: transition mode
PFC controller with extended
temperature speciication
Q L6599AT: high-voltage resonant
controller with extended
temperature speciication
Q STB21NM60N, STB8NM60N:
MDmesh™ power MOSFETs
Q STTH3L06U: Turbo2 ultraast
high-voltage rectiier
Q STPS10150CG: high-voltage power
Schottky rectiier
Q SEA05: advanced constant-voltage
constant-current controller
Target application
Q SMPS or LED street lighting
48 V, 130 W high-efciency SMPSor LED street lighting
A two-stage topology provides very high efciency,
Extended input mains range operation and long-term reliability
www.st.com/powermanagement
STMicroelectronics
7/27/2019 48 v, 130 W High-efficiency SMPS for LED Street Lighting-flsmpsled
http://slidepdf.com/reader/full/48-v-130-w-high-efficiency-smps-for-led-street-lighting-flsmpsled 2/2For more inormation on ST products and solutions, visit www.st.com
© STMicroelectronics - October 2011 - Printed in United Kingdom - All rights reservedThe STMicroelectronics corporate logo is a registered trademark o the STMicroelectronics group o companies
All other names are the property o their respective owners
Order code: FLSMPSLED1011
The PFC stage, working in transition mode, acts as pre-regulator and powers
the resonant stage with an output voltage o 450 V. The PFC power topology is a
conventional boost converter, connected to the output o the rectifer bridge.
This design presents a very high efciency, extended input mains range operation
and long term reliability. The electrolytic capacitors are replaced by flm capacitors.
Component derating has also been careully applied during the design phase,
decreasing component stress.Moreover, the use o L6562AT and L6599AT minimizes the number o external
components, reducing the overall system cost and increasing the MTBF (mean
time between ailures).
The high efciency achieved means that the PFC stage only requires a small
heatsink, while the other power components are surace mounted, like most o the
passive components, thus decreasing the assembly cost.
The board also has protection eatures that are activated in case o overload or
short circuit, open loop or each stage or input overvoltage. All the protection
eatures have an auto-restart unction − they do not need to be deactivated
manually ater intervention.
Evaluation boards
Order codes Description Application note
EVL130W-SL-EU 130 W SMPS or LED street lighting applications, extended European input mains range: 177 to 277 V AC
AN3105
EVL130W-STRLIG 130 W SMPS or LED street lighting applications universal Input mains range: 85 to 305 V AC
AN3106
EVL6562A-LED Constant-current inverse buck LED driver using L6562A, transition mode PFC AN2983
AC mains
EVL130W-SL-EU or
EVL130W-STRLIG
EVL6562A-LED
48 V/130 W
R LED
DIMMING DIMMING
R LED
DIMMING
R LED
EVL6562A-LED EVL6562A-LED
PFCL6562AT
LLCL6599AT
Inverse buck CCregulator
Inverse buck CCregulator
Inverse buck CCregulator