STEVAL-ISA041V1

STEVAL-ISA041V1 125 W SMPS based on the STP12IE95F4 ESBT switch with L6565 PWM controller Features ■ Input voltage range: 240 - 400 VDC ■ Output voltage: 19 V - 6.6 A ■ Maximum output power: 125 W ■ Short-circuit protection based on auto-restart feature ■ Minimum switching frequency: 55 kHz ■ Converter efficiency: >85% ■ Meets EN60065 safety standards ) s ( ct u d o r P e t e l o PCB type and size ■ PCB grade: FR-4 ■ Single-side layout ■ Copper thickness: 35 µm Description ) (s s b O STEVAL-ISA041V1 t c u This demonstration board is a 125 W adapter using ESBT switch STP12IE95F4, the L6565 quasi-resonant PWM controller and the STSR30 smart driver IC for flyback synchronous rectification. d o r P e t e l o The main target of this design is to offer a high power, cost-effective flyback converter for notebook computer power supply with good efficiency. This is achieved by using a quasiresonant PWM driver, synchronous rectification and constant current driving of the ESBT switch. s b O The 240-400 VDC input range of the converter is also tailored for PFC input use (not implemented on the board). It is possible to use various PFC conceptions based on other ST solutions. April 2010 Doc ID 17405 Rev 1 1/4 www.st.com 4 2/4   Doc ID 17405 Rev 1 2     ).6 6&& '.$ #3 #/-0  5 , # N& 2     0# 5 # SECONDARY N&9  !UX ANODE REF 6 # # N& 2 6). 6/54 '.$ 5 ,,!# $ 6 2 NC # N& 2 2 CATODE 5 4, "!6 $ 2 2 7 3-036! 2 1 340)%& 2 $ 3403(5 1  340.&  2 2 2 2  2 # N& 6 # ,   #+ 062'.$ 6## $ISABLE 3%4!.4   N& # 3-$INDUCTOR u d o $ "!6 # P& ).()")4 /54' 3', '.$ $ "!6 5    3432 r P e # N&   /54 :#$ 6##  2 2   0RIMARY   t e l o 2 # N& # P& 6 # P& # 1 "# 2 344( $ 3403 $ 2 N&6 ) (s s b O 2 # N& 2 2 %GSTON 6?7 %GSTON  d o r t c u "!6 $ 2 2 s b O 2 # 2 0RIMARY P e t e l o # 2 N& # N& # "!6 2 $ # N& 2 2 $ ,%$ '.$  !- 6! CONNECTOR /54   * Figure 1. (EADER(  6$# * 2 1 &USE ! &  4 2-?CORE Schematic diagram STEVAL-ISA041V1 Schematic diagram 125 W SMPS circuit schematic ) s ( ct STEVAL-ISA041V1 2 Revision history Revision history Table 1. Document revision history Date Revision 16-Apr-2010 1 Changes Initial release. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 17405 Rev 1 3/4 STEVAL-ISA041V1 ) s ( ct Please Read Carefully: u d o Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. r P e All ST products are sold pursuant to ST’s terms and conditions of sale. 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