data brief for further information contact your local stmicroelectronics sales office. february 2011 doc id 17897 rev 1 1/4 4 STEVAL-ISA080V1 90 w hb llc resonant converter demonstration board based on the l6585de combo ic features input voltage range : 90 to 265 vrms line frequency : 50/60 hz output voltage : 19 v output current : 4.7 a rohs compliant description the STEVAL-ISA080V1 demonstration board is a 90 w, wide range mains, power factor corrected ac-dc power supply. the architecture is based on a two-stage approach: a front-end pfc pre-regulator and a downstream multi-resonant half bridge converter. both stages are controlled by the new l6585de that integrates pfc and half-bridge control circuits and the relevant drivers. although this new device is dedicated to manage electronic ballast, it?s possible to use it also for hb llc resonant converter. the pfc section achieves current mode control operating in transition mode, offering a highly linear multiplier including a thd optimizer that allows for an extremely low thd, even over a large range of input voltages and loading conditions. STEVAL-ISA080V1 www.st.com
schematic STEVAL-ISA080V1 2/4 doc id 17897 rev 1 1 schematic figure 1. schematic circuit * # / . 2 # n & 2 k / h m $ 3 4 0 3 , & 0 2 & ) . 6 ' . $ / u t 6 # # , 3 $ # 4 2 % / , 0 % / , ( " # 3 ( 3 $ " o o t - u l t # o m p / s c % / ) 4 # ( 0 & ' : # $ 0 & # 3 5 , $ % 2 k / h m # n & 6 2 - / h m 2 / h m 2 - / h m 2 k / h m , 0 & # m ( 2 k / h m # u & # n & 6 ! # 9
$ " 2 ) $ ' % 1 3 4 & . - . # n & 6 8 * # / . 2 / h m 2 - / h m # n & 6 # m & $ . # u & 6 2 / h m 7 2 / h m 2 - / h m 2 - / h m 2 k / h m 1 " # 2 k / h m 1 3 4 & . - . & ! 1 3 4 & . - . # n
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k / h m 2 - o h m 2 k / h m 7 2 k / h m $ . $ 6 2 / h m 2 k / h m 2
2 / h m 2 k / h m 2 k / h m 2 k / h m # u & 6 2 k / h m # u & 6 5 4 , # u & 6 1 3 4 1 ( . + 2 $ 6 1 " # 2 / h m $ . 2 k / h m $ . $ 3 4 0 3 , & 0 2 k / h m $ . 2 k / h m $ . ! - 6
STEVAL-ISA080V1 revision history doc id 17897 rev 1 3/4 2 revision history table 1. document revision history date revision changes 25-feb-2011 1 initial release.
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