STEVAL-ISA147V3

STEVAL-ISA147V3 500 W fully digital AC-DC power supply (D-SMPS) based on STM32F334C8 microcontroller Data brief Description The STEVAL-ISA147V3 is a digital switch mode AC-DC converter consisting of two power stages: an input semi-bridgeless power factor corrector (SBPFC) controlled by an STM32F051K8, and a regulation stage implemented with an LLC half bridge with synchronous rectification (SR), controlled by an STM32F334C8 microcontroller. This 500 W AC-DC converter uses the so-called bridgeless PFC topology, with the advantage of lower conduction losses and higher efficiency by eliminating the need for a diode rectifier stage. This choice also allows a reduced component count compared to a standard PFC. Features                      Input AC voltage: 90 V to 264 V Input AC frequency: 45 Hz to 65 Hz Nominal power: 500 W Output voltage: 12 V Semi-Bridgeless PFC stage DC-DC stage: resonant LLC with synchronous rectification Peak efficiency: 94% PFC switching frequency: 60 kHz DC-DC switching frequency: 80 kHz to 115 kHz (burst mode above) HF transformer isolation voltage: 4 kV Cooling: natural convection up to 300 W, forced cooling above 300 W PFC control: managed by STM32F051K8 LLC control: managed by STM32F334C8 Input short-circuit protection Input under/overvoltage protection Input under/overfrequency protection DC Bus under/overvoltage protection Output short-circuit protection Output under/overvoltage protection Overtemperature protection RoHS compliant March 2016 The input stage is typically controlled using an outer voltage loop for bus voltage regulation and an inner control loop to shape the current according to a sinusoidal waveform. The outer loop adjusts the current reference in order to maintain a regulated bus voltage, independent of load or input voltage variations. The output isolation and regulation stage is implemented using a half-bridge LLC topology, operating with constant duty cycle and variable frequency control. DocID029092 Rev 1 For further information contact your local STMicroelectronics sales office 1/10 www.st.com Description continued 1 STEVAL-ISA147V3 Description continued The DC-DC stage performs voltage step-down using an HF transformer with a primary to secondary turn ratio chosen to maintain good efficiency and regulation over the entire operating range. The transformer is supplied with a square wave voltage generated by the primary side active switches. On the secondary side, this voltage waveform is rectified and then smoothed by the output filter; on the primary side, switching losses are reduced thanks to zero voltage switching (ZVS). On the secondary side, synchronous rectification (SR) is used to ensure low conduction losses. The overall effect of these design choices is high system efficiency, in line with the stringent requirements of the power supply industry. The system is controlled by two microcontrollers from the STM32 product family. On the primary side, an STM32F051K8 controls the bridgeless PFC by sampling the current of the two MOSFETs, the input AC voltage and the output bus voltage. Two control signals, PWM1 and PWM2, are then generated to drive two power switches. On the secondary side, an STM32F334C8 microcontroller samples the output voltage and adjusts the frequency of the LLC bridge control signals to ensure stable operation throughout the overall load range. In addition, two ADC channels are used to sample the rising and falling edges of the drain-to-source voltage of the SR MOSFETs. The two microcontrollers exchange information about the status of the input and output power stage via bidirectional serial communication. Both the power stage and control stage are supplied by an offline flyback circuit which provides a suitable, regulated voltage to the microcontrollers, the gate drive ICs and signal conditioning circuits. 2/10 DocID029092 Rev 1 F1 FUSE R3 R4 R6 470K 9241108 470K 9241108 470K 9241108 R27 R31 R36 C21 1uF X2 1781894 C22 1nF R34 470K 9241108 R30 470K 9241108 R26 470K 9241108 EARTH2 C97 4n7 Y2 1166486 4 2 3.3nF 5K1 R43 8n2 C65 1K C76 3.3nF GND1 R41 C83 100nF GND1 D11 R38 GND1 R32 10K 10K BAR 43 AS no t conne cted 3 1 ININ+ C53 C12 +3.3 Primary GND1 4 TSV611 OUT GND1 R18 nc GND1 D13 1N4007 U6 GND1 2000 R40 C20 100nF 0 D12 1N4007 PFC VAC G_PFC1 Q1 2 500uH 10A L2 1 3 GND1 1 MURATA 53020C S T P 42N60M2-EP 3 T4 4 R15 22 GND1 R21 6.8 STPS1L309907491 D19 R51 D9 D10 1N4007 1N4007 PFC CS1 GND1 R50 nc 0 G_PFC2 GND1 R22 6.8 STPS1L309907491 D14 R49 D7 STPSC1006D R16 22 S T P 42N60M2-EP 3 4 500uH 10A 1 3 Q2 MURATA 53020C T5 GND1 1 2 L1 D8 STPSC1006D 100uF 450V 1166652 C35 100uF 450V 1166652 C14 100uF 450V 1166652 C36 100uF 450V 1166652 GND1 C34 C25 560nF 1890496 C23 +3.3 Primary 560nF 1890496 GND1 +3.3 Primary C64 C16 560nF 1890496 PFC CS2 1K GND1 C71 C46 EARTH 4n7 Y2 1166486 C26 L3 1636294 4n7 Y2 1166486 C1 560nF 1890496 R39 EARTH C18 4n7 Y2 1166486 C24 L6 1636294 4 2 4n7 Y2 1166486 C15 1uF X2 1781894 C96 3 4n7 Y2 1166486 470K 9241108 470K 9241108 3 2 1 Header 3 EARTH2 1uF X2 1781894 JP1 470K 9241108 1 3 1 EARTH 560nF 1890496 2 1 EARTH 560nF 1890496 5 V+ V- DocID029092 Rev 1 2 1 2 2 1 2 1 C17 560nF 1890496 560nF 1890496 GNDpri +3.3V pri - OUT PFC C19 + OUT PFC 2 EARTH2 STEVAL-ISA147V3 Schematic diagram Schematic diagram Figure 1: STEVAL-ISA147V3 circuit schematic (1 of 6) GSPG0903151420SG 3/10 DocID029092 Rev 1 3.3V pri - OU T PF C Bridg e curr ent R77 300 Q12 N.C. GND pri +3.3V pri Bridg e LS_P D20 100nF C48 0 R81 C43 20 20 20 C49 100nF 0 10 12 13 ACPL-P484 2070254 U10 U11 Vcc Vo U 12 GN D Vo V cc 4n7 4kV C80 PS 9821 /KB357 NT 1 8 7 6 PS 9821 /KB357 N T 5 GN D 1 2 3 4 1 2 5 6 3 4 1 2 6 3 N.C. Q17 5 ACPL-P484 2070254 U9 D23 2 39 /200 for 357 N T R86 3 0 R104 4 R84 CapLL C 6 3 15 8 5 6 7 D 36 1N 4148 W 1469425 GND 2 0 GND 2 C50 100nF GND 2 R44 47 R35 47 GND 2 GD R_2 GND 2 Bridg e LS_P_M CU nc/820 for 357 NT U SART1 RX Sec ond ary R103 Q 14 Bridg e H S_P_M CU Q10 39 R42 39 USA RT1 TX Sec ond ary 39 /200 for 357 NT 0 0 R85 3.3V sec R83 R82 R100 300 R80 GND 2 300 R79 GND 2 Q8 STL 220 N6F7 VD rain2 1N4148 W 1469425 R37 1K T7 TRAN SF ORM ER LP4525-H GND 2 4 nc/820 for 357 NT USA RT1 TX Prim ary 3.3V pri R101 +V cc +V cc 100nF C47 1N 4148 W 1469 425 M M SD914 U SART1 RX Prim ary C44 10u F 2112705 Q4 R74 R52 R56 Q3 Q11 Bridg e H S_P STP25N60M2-EP GD _2 OU T GD _1 15n F 18 54929 STP25N60M2-EP 220p F 1216461 C45 15n F 1854 929 N.C. C84 D 33 STL 220 N 6F7 + OU T PF C 1N4148 W 1469425 M M SD914 T2 N.C. N.C. Q16 C89 22pF Q6 STL 220 N6F7 curr ent_cycle D 37 BAT754 curr ent_AV G VD rain2 GND 2 3.3V sec Q7 Discharge V D rain2 GND sec 300 GD R_1 R97 +3.3V sec ond ary Q13 VD rain1 STL 220 N6F7 3.3V sec N.C. BA T754 R29 1K R33 150 0uF 16V 155 1414 MAGNETICA 24.340.002 C39 C40 FAN switch C41 GND 2 C42 +12V Q9 PM BF170 1081473 R94 100 GND 2 150 0uF 16V 155 1414 C88 10nF 150 0uF 16V 155 1414 C87 3uF 150 0uF 16V 155 1414 D28 C90 330 R111 10u F X 7R 2112722 3.3V sec C91 C92 C93 Q 15 STN 4NF03L GND 2 10u F X 7R 2112722 4/10 10u F X 7R 2112722 GND 2 14 12 10 8 6 4 2 P6 13 11 9 7 5 3 1 GND 2 GND 2 Hea der 7X2H 1551388 12V FAN 1 2 3 P7 0 (nc) R115 Schematic diagram Figure 2: STEVAL-ISA147V3 circuit schematic (2 of 6) STEVAL-ISA147V3 GSPG0903161500SG 10u F X 7R 2112722 DocID029092 Rev 1 C81 nc C78 1uF C85 100pF R23 0 Bridge HS_P +Vcc SD L6491D C79 100nF C82 100pF C31 C29 1 2 3 4 5 6 7 4 1 2 3 LVG GND L6491D LIN SD/OD HIN VCC DT SGND PGND CP+ CPLVG BOOT HVG OUT Q5 PMBF170 108147 3 330 R67 10 9 8 14 13 12 R65 nc R66 300 +3.3 Primary OUT HVG BOOT 4u7 C77 R68 nc 5 6 7 8 L6387E (not mounted) LIN HIN VCC U7 C32 100pF (not mounted) U8 R62 10K Bridge LS_P 100pF (not mounted) Bridge LS_P Bridge HS_P 1uF (not mounted) C72 100nF (not mounted) +Vcc +Vcc OUT 10K +Vcc +3.3 Primary BAT754 D16 BAT754 R20 R25 1K R59 82 R58 3.3 R55 82 R54 3.3 D15 4u7 (not mounted) C28 +3.3V pri SR2 SR1 GND pri GD_2 OUT GD_1 R61 R60 GND2 GND2 GND2 330 1 2 3 4 R57 360 10K R63 330 PFC PWM 1 PFC PWM 2 R53 360 C86 C33 PM8834 ENB1 PWM1 GND PWM2 IC2 R64 10K 1uF 100nF ENB2 OUT1 VCC OUT2 PM8834 8 7 6 5 1uF +Vcc G_PFC1 G_PFC2 EN DR PFC 0 0 D17 R118 R117 6V Viper BAT754 D18 GDR_2 GDR_1 EN SYNC RECT 8 7 6 5 BAT754 ENB2 OUT1 VCC OUT2 12V 100nF C73 C30 ENB1 PWM1 GND PWM2 GND sec 1 2 3 4 IC1 STEVAL-ISA147V3 Figure 3: STEVAL-ISA147V3 circuit schematic (3 of 6) Schematic diagram GSPG0903161445SG 5/10 PFC CS2 SD L6491D 330 PFC CS1 R109 470 +3.3 Primary R45 C94 47pF D22 BAT754 C56 1uF Bridge current D21 BAT754 +3.3 Primary C55 100nF 100nF C51 GND1 U5 LM19CIZ +3.3 Primary 1 2 +VS VO C67 GND 100nF +3.3 Primary C95 47pF 330 R108 L4 3 470 R17 I2C1_SDA I2C1_SCL U13 DAC out P2 GND1 Header 4 1 2 3 4 P3 +3.3 Primary 1 2 3 4 PFC PWM 2 GNDpri +3.3V pri + OUT PFC R96 3K9 R95 180K C58 10nF D25 BAT754 R92 +3.3 Primary 180K R91 180K USART1 RX Primary EN DR PFC P4 Header 4 +3.3 Primary PFC PWM 1 470 R28 +3.3 Primary +3.3 Primary C57 100nF LED 1058385 D24 24 23 22 21 20 19 18 17 T9 test Test point PA14 PA13 PA12 PA11 PA10 PA9 PA8 VDD 620 22nF C68 1 R93 Test point STM32F051Kx VDD PF0/OSC_in PF1/OSC_out NRST VDDa PA0 PA1 PA2 +3.3 Primary C27 100nF BAT754 D38 +3.3 Primary 1 2 3 C52 4 5 10nF 6 7 8 R87 10K T8 1 32 31 30 29 28 27 26 25 PB8 BOOT0 PB7 PB6 PB5 PB4 PB3 PA15 PA3 PA4 PA5 PA6 PA7 PB0 PB1 PB2/BOOT1 9 10 11 12 13 14 15 16 DocID029092 Rev 1 PFC VAC 6/10 test USART1 TX Primary Schematic diagram Figure 4: STEVAL-ISA147V3 circuit schematic (4 of 6) STEVAL-ISA147V3 GSPG0903161515SG GSPG0903161540SG DocID029092 Rev 1 6V Viper GND2 VCC GND sec +3.3V secondary 0 R73 STM32F 334 R72 0 cu rr ent_AVG R11 3 2k R11 0 2k Vb bat PC C 13 PC C 1 4 / O S C 3 2 in PC C 1 5 /O S C 3 2 o u t PD D 0 / O S C in PD D 1 /O S C o u t NR RST VS SSa VDDa PA0 PA1 PA2 R48 C74 100n F D32 BAT754 GND2 to main GND2 R69 0 R46 0 R47 0 C54 10n F GND2 10 K R99 GND2 0 GND2 C9 8 nc (47 to 100 nF) 1 R10 5 1K 0.1% C66 1nF D27 BAT754 GND2 1 2 3 4 5 6 7 8 9 10 11 12 C59 100n F GND2 VCC GND2 C69 100n F SR leg1 SR leg2 36 35 34 33 32 31 30 29 28 27 26 25 VCC R76 R78 R88 R89 R90 0 0 0 0 0 R75 0 GND2 VCC 200 R98 D35 VCC BAR43S GND2 D29 VCC GND2 VC C BAR43S GND2 C75 47p F R11 4 GND2 C70 47p F R10 7 0 0 USART1 TX Secondary USART1 RX Sec ondary R11 2 360 VC C VDrain1 D34 BAT754 BAT 754 R10 6 360 D30 2 3 4 Header 4 1 2 3 4 Heade r 4 P8 1 VCC P5 LED 1058385 D26 FAN switch SR1 Bridg e HS_P_MC U Bridg e LS_P_MCU SR 2 GND2 100n F C60 GND2 EN SYNC RECT VCC VDD_3 VSS_3 PA13 PA12 PA11 PA10 PA9 PA8 PB15 PB14 PB13 PB12 U14 470 R19 GND2 24 23 22 21 20 19 18 17 16 15 14 13 12 V R10 2 VCC GND2 C3 100n F 20p F 2 VDD_2 VSS_2 PB11 PB10 PB2 PB1 PB0 PA7 PA6 PA5 PA4 PA3 4K3 0.1% C63 1u F GND2 Y2 1 C62 8Mhz HC49 /US T12 T13 Test p oint 1 20p F C61 Temp SR out Test p oint test test VCC R24 470 C38 100n F GND2 2 PA14 PA15 PB3 PB4 PB5 PB6 PB7 BOOT0 PB8 PB9 VSS_1 48 VDD_1 GND2 VCC VO GND2 3 37 38 39 40 41 42 43 44 45 46 47 GND2 L5 GND +VS U 15 LM19 CIZ I2C 3 2 1 GND2 C37 100n F VCC 1 P9 V Drain2 STEVAL-ISA147V3 Figure 5: STEVAL-ISA147V3 circuit schematic (5 of 6) Schematic diagram Temp SR out Discharge cu rr ent_cycle 0 R71 0 R70 7/10 3 Vin GND 1 Vout 2 GNDpri C13 100uF 16V 1780615 +3.3V pri +Vcc R2 3.3 C10 nc 100uF 25V 1780615 C8 D6 BAR46 -OUT PFC R12 nc R11 33K 3 5 R7 180K CONT BR VDD C11 22nF FB CONTROL D3 STTH1L06 U2 R13 47K C9 120nF SOURCE DRAIN VIPER 27H N C4 22uF 35V 1899657 D4 1N4148W 1469425 R1 1 D5 BAR46 D2 7 1.5KE250 8 1 PC817 D OPTO1 2 4 1 5 TR1 8 6 4 TS431ILT U3 9 7 Viper transfo WE MIDCOM 4 3 + OUT PFC 2 4 1 2 3 2 DocID029092 Rev 1 A K NC NC VREF 2.4K R5 R10 160K C7 82nF R8 1.8K 470uF 16V YXF R14 4.3K R9 16K GND2 C2 GND2 STPS2L40 D1 C5 1uF 3 Vout Vin GND GND2 GND2 1 8/10 5 1 +3.3V secondary 6V Viper 1 2 Header 2 C6 100uF 16V 1780615 4 GNDsec Vout 2 U1 LD1117 P1 Schematic diagram Figure 6: STEVAL-ISA147V3 circuit schematic (6 of 6) STEVAL-ISA147V3 U4 LD1117 GSPG0903161400SG STEVAL-ISA147V3 3 Revision history Revision history Table 1: Document revision history Date Version Changes 11-Mar-2016 1 Initial release. DocID029092 Rev 1 9/10 STEVAL-ISA147V3 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2016 STMicroelectronics – All rights reserved 10/10 DocID029092 Rev 1