User manual - STMicroelectronics
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1. in Figure 9 Figure 9 EMI measurement regarding EN55022 Class 2 peak detector Agilent 09 44 34 Sep 13 2011 Ref 75 dBpV Atten 5 dB Peak Log 10 dB 4 MEL ui NN ki ds TW fM M LN Y n NI H1 2 3 FC AA Start 150 kHz Stop 30 MHz Res BH 9 kHz VBH 30 kHz Sweep 881 3 ms 2318 pts 3 Doc ID 022241 Rev 1 15 19 Measurements UM1470 Figure 10 EMI measurement regarding EN55022 Class 2 AVG detector Agilent 11 12 46 Sep 13 2011 Ref 75 dBpV Atten 5 dB EmiAy Log 18 CSO ee H1 52 3 FC AA Start 150 kHz Stop 30 MHz Res BH 9 kHz VBH 30 kHz Sweep 4 ks 2310 pts 16 19 Doc ID 022241 Rev 1 ky UM1470 Measurements 4 5 Temperature The thermal map at full load measured at 265 VAC and at 85 VAC is displayed in and The ambient temperature was 25 C Regarding the measurements visible below it can be estimated that the temperature of the components is below AMR even at 85 C of ambient temperature This range can be extended by using a bigger Cu heatsink area connected to the drain of the VIPer06XS Figure 11 Thermal map of the board at 265 VAC on the input left bottom side right top side RUNE v E 7OONE 0 96 8 t f 200m 700 E 0 962. 13 The 12 V output load characteristics 14 EMI measurement regarding EN55022 Class 2 peak detector 15 EMI measurement regarding EN55022 Class 2 AVG 16 Thermal map of the board at 265 VAC on the input left bottom side right top side 17 Thermal map of the board at 85 VAC on the input left bottom side right top side 17 Doc ID 022241 Rev 1 3 19 Main characteristics UM1470 4 19 Main characteristics The main characteristics of the SMPS are listed below Input 85 264 Vrms f45 66Hz Output 12 VDC 10 150 mA Standby 30 mW at 264 VAC Short circuit protected PCB type and size FR4 Single side 35 um size 19 x 39 mm board size 38 x 61 mm Isolation isolated 4 kV 8 mm EMI according to EN55022 Class B Doc ID 022241 Rev 1 UM1470 Board connection 2 Board connection The STEVAL ISA096V1 demonstration board is shown in Figure 2 with input and output locations Figure 2 Input output connection of SMPS AC input 85 264 VAC Ss T N ON D FOR EVALUATZON PURPOSE JNLY STEVAL ISA0S6Vi FB PIN4 COMP PIN5 SOURCE PIN 1 ky Doc ID 022241 Rev 1 5 19 Board description UM1470 3 Board description 3 1 Schematic A schematic diag
3. 6 3 1 Schematic xev nC USE Y rac 6 3 2 Description of the schematic 8 3 3 EVE eye tare a ede a ods gael wade anette Sa 8 3 4 Bill of materials 10 4 Measurements kp oe besa ee RUE RR Dd D 11 4 1 PUIGIONGY dulcis D ux MEE LS 11 4 2 sj AP 13 4 3 I oad eharacteristi6S ica RIA ek NC 14 4 4 RT HELIX Em 15 4 5 Temperature 17 5 REVISION history 18 2 19 Doc ID 022241 Rev 1 ky UM1470 List of figures List of figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 STEVAL ISA096V1 demonstration 1 Input output connection 2 5 STEVAL ISA096V1 circuit 7 The PCB layout top and 9 Efficiency at 120 VAC and 230 VAC depending on the output current 11 Efficiency at full load 150 mA over input voltage 12 Standby depending on the input voltage
4. Figure 12 Thermal map of the board at 85 VAC on the input left bottom side right top side Aviol t 2008 700 E 0 96 8 t f 2000 70 0 Doc ID 022241 Rev 1 17 19 Revision history UM1470 5 18 19 Revision history Table 2 Document revision history Date Revision Changes 02 May 2012 1 Initial release Doc ID 022241 Rev 1 UM1470 Please Read Carefully 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 All ST products are sold pursuant to ST s terms and conditions of sale Purchasers are solely responsible for the choice selection and use of the ST products and services described herein and ST assumes no liability whatsoever relating to the choice selection or use of the ST products and services described herein No license express or implied by estoppel or otherwise to any intellectual property rights is granted under this document If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained therein or considered as a warranty
5. wv UM1470 J User manual STEVAL ISA096V1 12 V 150 mA adaptable buck boost converter Introduction The purpose of this document is to describe the STEVAL ISA096V1 switched mode power supply SMPS demonstration board The STEVAL ISA096V1 is a non isolated SMPS designed in buck boost topology capable of delivering up to 2 W output over a wide input voltage range providing a cost effective and space saving solution It also offers the user the possibility of adapting the circuit to their needs thanks to the availability of a free PCB area The STEVAL ISA096V1 SMPS generates a 12 V nominal output voltage This board is based on VIPer V06XS a monolithic converter integrating an 800 V avalanche rugged MOSFET and PWM controller in one package This document contains a basic technical description of the demonstration board schematic diagram PCB details and bill of material as well as the most significant parameter measurements load regulation efficiency standby behavior EMI and thermal behavior data Figure 1 STEVAL ISA096V1 demonstration board 4 P N E D P DEMOBOARD FOR EVALUATION PURPOSE ONLY 2 LaF CUM May 2012 Doc ID 022241 Rev 1 1 19 www st com Contents UM1470 Contents 1 Main characteristics 4 2 Board connection 22 55 n RERO RC EUER CRT Oe wae ee 5 3 Board description
6. 1W 0805 2 1 R2 22Q 2W 5 WW TH wire wound 3 1 10 0 1 0 1 0805 4 0 4 0805 5 0 5 0805 6 0 C1 N A 18x 6 x RM 15 7 1 C2 C10 3 3 uF 400 V R 10 x 13 RM 5 mm 8 1 CA 1 uF 25V X7R 1206 9 2 C5 47uF 50V R 6 3 x 11 RM 2 5 mm 10 0 C6 0805 11 1 C7 C8 1 5nF 50V 0805 12 1 L1 1 mH 80 13 1 L3 Fy 5 ie R8x10 RM5mm W rth Elektronik 14 2 D1 D2 1N4007 MELF SMA 15 2 D3 D4 STTH1LO6A SMA STMicroelectronics 16 1 D5 1N4148 SOD80 17 1 DZ1 ZD 15V 5 SOD80 18 1 U1 VIPerO6XS 55010 STMicroelectronics 19 1 J1 Screw terminal 2 pos RM 5 mm 20 1 J2 Screw terminal 3 pos RM 5 mm 10 19 Doc ID 022241 Rev 1 ki UM1470 Measurements 4 Measurements 4 1 Efficiency The output voltage efficiency depending on the output current of 12 V output is displayed in Figure 5 Figure 5 Efficiency at 120 VAC and 230 VAC depending on the output current u E d T Jg 1 80 00 70 00 Eff 120 V Eff 230 V 60 00 50 00 Eff 40 00 30 00 20 00 10 00 0 00 0 000 0 020 0 040 0 060 0 080 0 100 0 120 0 140 0 160 lout A 7 Doc ID 022241 Rev 1 11 19 Measurements UM1470 Figure 6 shows the efficiency of the SMPS at full load applied on the 12 V depending on the different input voltage A drop of efficiency at low input voltage is mainly caused by an increase in the losses in the input inrush resistor
7. and EMI filter Figure 6 Efficiency at full load 150 mA over input voltage range 90 00 80 00 70 00 60 00 50 00 Eff 40 00 30 00 20 00 10 00 0 00 Vin VAC 12 19 Doc ID 022241 Rev 1 ky UM1470 Measurements 4 2 Standby The standby behavior of the board is displayed in Figure 7 This value is for any input voltage below 30 mW The measured value could be partly reduced by using a higher value of resistors R1 and R3 The power loss over these resistors is about 4 5 mW By using a higher value voltage divider 5 10 times the standby losses drop by about several mW but this action increases load regulation Figure 7 Standby depending on the input voltage 30 25 20 Py mW Vin VAC 7671 Doc ID 022241 Rev 1 13 19 Measurements UM1470 4 3 Load characteristics The load characteristics of a 12 V output are displayed in Figure 8 The output voltage is for any load and any input voltage within a 10 tolerance Figure 8 12 V output load characteristics 0 000 0 020 0 040 0 060 0 080 0 100 0 120 0 140 0 160 lour mA 14 19 Doc ID 022241 Rev 1 ky UM1470 Measurements 4 4 EMI The conductive EMI test of the demonstration board is displayed in Figure 9 and 10 The AVG detector is used in Figure 10 while the peak detector measurement can be seen below
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9. lied The ST logo is a registered trademark of STMicroelectronics All other names are the property of their respective owners 2012 STMicroelectronics All rights reserved STMicroelectronics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Philippines Singapore Spain Sweden Switzerland United Kingdom United States of America www st com ky Doc ID 022241 Rev 1 19 19
10. ram of the buck boost converter board based on the VIPer06XS is provided in Figure 3 6 19 Doc ID 022241 Rev 1 ky Board description UM1470 STEVAL ISA096V1 circuit schematic Figure 3 09SZ20INV LNO AGL zi nd n Hu 2 GO 1 901LH LIS b FU OX 01 S24 S2 HLS wp pg egy I vo GL OM 89 ZellerLvNL SX90J8dIlA Sq meg m A 00v a 010 20 ZOOVNI Hw Mc O 4 7 19 Doc ID 022241 Rev 1 Board description UM1470 3 2 3 3 8 19 Description of the schematic The input part of converter consists of an input single wave rectifier EMI EMC filter and bulk capacitor The input rectifier is based on two 1 A 1 kV general purpose diodes D1 D2 The 2 kV blocking voltage is selected to increase robustness against input surge pulse The EMI filter is based on a m filter C10 C2 L1 and the possibility to place an input foil capacitor may also be an option This capacitor is not mandatory in order to satisfy EMI limits see Figure 9 but it can be used in case a wider margin of EMI limits is required The input EMC filter is based on the inrush resistor R2 and bulk capacitors C10 and C2 The buck boost converter itself uses a standard connection The 06 5 U1 containing an active switch and controller is placed as the high side with floating refe
11. rence After turn ON of the internal MOSFET the energy is stored in the inductor L3 After U1 is turned off the energy stored in the L3 is distributed to the output capacitor C5 via diode D4 and in capacitor C3 via diode D3 It can be expected that the voltage drop over capacitor C3 is almost the same as the voltage drop over output capacitor C5 The feedback loop performs constant voltage regulation and the output voltage is measured across C3 by a voltage divider R1 and R3 connected to the FB pin of U1 Layout The layout of the PCB is based on a one sided FR4 with a 35 um thickness and is shown in Figure 4 The size of the PCB dedicated for the SMPS itself is 39 mm x 19 mm while the size of the complete PCB is 61 x 38 mm this extra space area provided by through hole connections is intended to give the user the possibility of modifying certain board specifications It is possible for example to apply an output linear regulator generating precisely 3 3 or 5 V or to realize different types of feedback loop to minimize load regulation Doc ID 022241 Rev 1 ky UM1470 Board description Figure 4 The PCB layout top and bottom COMPLIANT 2002 95 EC ky Doc ID 022241 Rev 1 9 19 Board description UM1470 3 4 Bill of materials Table 1 BOM Index Quantity Ref Valle dH part Package class Manufacturer 1 1 R1 27kQ 196 0
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