STEVAL-PCC019V1

STEVAL-PCC019V1 USB to I2C trimming interface board with embedded load for automatic power supply trimming based on the SEA01 Data brief • Three I2C buses running at 100 kHz, including one which is electrically isolated from the active load • Integrated electronic active load with sink capabilities of up to 25 V / 10 A • Self-calibrated references ) s t( c u d • Voltage and current measurement with precision of 0.1% (voltage) and 1% (current) o r P • Integrated temperature sensor to monitor onboard load temperature e t le • RoHS compliant o s b Features • Bidirectional communication between PC (USB) and SEA01 (I2C) O ) s ( t c • Self-powered from the USB line u d o • On-board 19 V generation for SEA01 programming r P e • Electrical isolation between USB and the other circuitry on the board t e l o s b O October 2014 DocID027093 Rev 1 For further information contact your local STMicroelectronics sales office. 1/11 www.st.com Description 1 STEVAL-PCC019V1 Description The STEVAL-PCC019V1 is an evaluation tool used to interface a Windows®-based PC with digitally trimmable products like the SEA01 constant voltage and current controller with online digital trimming from STMicroelectronics. It functions basically as a bidirectional bridge between USB and I2C buses. The board also embeds an active CC/CV load to trim SEA01-based power supplies without the need for external instruments (such as supply, voltmeter, active load). The STEVAL-PCC019V1 is self-supplied via the 5 V from the USB connector. Three isolated DC-DC modules are used to provide the correct supplies to the remaining parts of the board, maintaining the isolation between the PC and target sides. ) s t( c u d The board is also capable of providing the target device (SEA01) with a VCC voltage high enough to program NVM (in cases where the supply is < 17 V). o r P Communication between the STEVAL-PCC019V1 and the PC is managed by a standard serial peripheral, converting the USB connection into a virtual COM port. The RX and TX signals are then isolated using opto-couplers and connected to the STM32 microcontroller, ensuring that the USB port and the remaining parts of the board are isolated from the mains. e t le o s b The microcontroller is the heart of the system, and it is in charge of performing conversion between the UART and I2C protocols. The STM32 manages the UART to I2C conversion allowing bidirectional communication between the PC and the target device. O ) The I2C speed is set to 100 KHz (the maximum speed allowed by the SEA01). s ( t c In order to fulfill all possible SEA01 application needs, the board embeds three I2C ports, one of which is also isolated from the 2 others (depending on whether the SEA01 is put on primary or secondary). This allows trimming of the SEA01 in various configurations (primary, secondary side), or even multiple SEA01 chips. u d o r P e A companion evaluation board (STEVAL-ISA161V1) which includes the SEA01 as secondary side CV/CC controller can be interfaced with the STEVAL-PCC019V1 to test the benefits of digital trimming in a real application. t e l o s b O 2/11 DocID027093 Rev 1 STEVAL-PCC019V1 2 GUI features GUI features The main purpose of the associated GUI is to perform trimming operations for the SEA01 to a desired setting point (both voltage and current limitation). Trimming parameters can be read, and also changed, on the fly. In addition, in a second step the GUI can also be used to manually verify the trimming calibration by operating the supply in CC or CV mode, without any external instruments. Figure 1. GUI main panel ) s t( c u d e t le o r P o s b O ) Another interesting feature of the GUI is the embedded characteristic curve tracer. s ( t c This allows the display of the power supply behavior almost instantaneously by simply pressing a button. Both CC and CV modes of operation are supported. u d o r P e Figure 2. GUI curve tracer t e l o s b O Because on-board heatsink is relatively small, its temperature is also monitored to protect the load. DocID027093 Rev 1 3/11 11 6 7 1 2 3 4 5 DocID027093 Rev 1 GND_USB R107 0R GND_USB 3 2 1 F1 0466.500NR 0.500A I/O2#4 VBUS I/O1#6 U17 USBLC6-2P6 I/O2#3 GND I/O1#1 4 5 6 L1 120R BLM18PG121SN1D C38 100NF GND_USB VDD_P C52 100NF 4.7K R85 1 2 3 4 5 6 7 C40 1UF DCD RI GND D+ DVDD REGIN GND_USB 5V_USB GND_USB RXD TXD NC NC NC NC NC NC NC GND_PAD GND_USB D4 YELLOW HSMY-C170 R105 330R 4 5 6 ACPL-M61L U16 GND VDD U19 5V_USB 2 1 2 1 -VIN +VIN C53 2.2UF GND_USB 5V_USB 2 1 -VIN -VOUT1 330R R84 VDD_3V3 VDD_3V3 7 6 5 4 C42 2.2UF 25V C57 2.2UF 25V L4 +15V 120R BLM18PG121SN1D +5V C44 2.2UF 4 2 3 1 UART_TX VOUT -VOUT 0V +VOUT -VOUT 0V +VOUT 4 2 3 C49 2.2UF 25V R108 6.8K 0805 5 C47 2.2UF 25V 1 C48 2.2UF 25V VDD24V_B GND_STM C46 2.2UF 25V 6 7 5 6 7 +24V 5 LD2981ABM33TR NC GND INHIBIT VIN U26 UART_RX Could be replaced by NMG0524SC(5->24V), but this is another part to procure, so currently stay with the same as below -VOUT2 +VOUT2 U23 NMK0512SC +VIN 3 1 C36 100NF GND_STM 4 5 6 12V should be enought, but +5/+12 insn’t available So will use +5V & +15V +VOUT1 U22 NMK0512SC -VIN +VIN PC/USB Domain GND_USB GND VDD U20 NMD050515SC GND_USB 5V_USB C62 2.2UF GND_USB C54 2.2UF 21 20 19 18 17 16 15 29 U18 CP2102 3 1 ACPL-M61L C39 100NF GND_USB VDD_P R 83 330R o s b e t le VOUT 5 LD2981ABM33TR NC GND INHIBIT VIN U25 o r P TP10 TP9 GND_AL R101 0R AGND VLOAD_N VSHUNT_N AVDD_3V3 Isolated Domain *I2C3 C43 1UF C41 1UF VDD_3V3 Main Domain *I2C1 & I2C2 *CV Load *MCU C56 1UF isolated 3V3 is needed for I2C bus R100 NP R98 0R R97 0R R96 0R R95 0R R87 0R R86 0R L6 120R BLM18PG121SN1D L5 120R BLM18PG121SN1D GND_STM VDD3V3_B GND_STM C55 1UF GND_AL c u d GSPG14102014DI1500 TAB1 TAB2 VBUS DD+ ID GND J6 UX60SC-MB-5ST GND_USB GND_USB C65 C1206 NP 28 27 26 25 24 23 22 DTR DSR TXD RXD RTS CTS NC 4/11 VBUS RST NC /SUSPEND SUSPEND NC NC u d o s ( t c O ) 8 9 10 11 12 13 14 5V_USB s b O t e l o 1 r P e 1 ) s t( GND_PRIM 3 VDD_P Schematic diagrams STEVAL-PCC019V1 Schematic diagrams Figure 3. STEVAL-PCC019V1 circuit schematic (1 of 6) DocID027093 Rev 1 B3S-1000P SW 1 GND_STM GND_STM 1 4 GND_STM 2 3 R48 NP VDD_3V3 C20 18PF GND_STM C23 100NF VREF_SEL DAC_ILIM UART_TX UART_RX SEA_GND_EN DIGFREE_1 LED3 LED2 LED1 C24 4.7UF AGND C25 100NF AVDD_3V3 GND_STM BC848BL Q14 D5 RED HSMH-C170 R118 10K R104 330R C21 4.7UF BOOT0 VBAT PC13 PC14-OSC32_IN PC15/OSC32_OUT PF0-OSC_IN PF1-OSC_OUT NRST VSSA/VrefVDDA/Vref+ PA0 PA1 PA2 VDD_3V3 1 2 3 4 5 6 7 8 9 10 11 12 GND_STM C22 100NF VDD_3V3 I2C_SCL_1 I2C_SDA_1 I2C_SCL_2 I2C_SDA_2 LED1 LED2 LED3 OSC_IN OSC_OUT nRST EN_LOAD GND_STM R42 0R C29 100NF GND_STM C27 100NF C26 4.7UF 36 35 34 33 32 31 30 29 28 27 26 25 U8 STM32F373CCT6 PF7 PF6 PA13 PA12 PA11 PA10 PA9 PA8 PD8 PB15 PB14 VREFSD+ DIGFREE_4 DIGFREE_3 nJTRST JTDO JTDI JTCK/SW CLK JTMS/SW DIO PROG_ENA Could also be used for USB upgrade through DFU I2C_SDA_3 I2C_SCL_3 R45 10K VDD_3V3 PROG_ENB C28 4.7UF R99 0R DIGFREE_2 GND_VREF AVDD_3V3 GND_VREF EN_LOAD CCLIM_INDIC VMEAS_VREF_SEL VREF_ADC_SIGDEL I2C_SDA_TEMP I2C_SCL_TEMP R46 NP ADC_VN ADC_VP ADC_IN ADC_IP 1 3 5 7 9 11 13 15 17 19 R47 NP R60 NP DIGFREE_4 DIGFREE_1 DIGFREE_2 DIGFREE_3 GND_STM JTDO nRST nJTRST JTDI JTMS/SW DIO JTCK/SW CLK R43 0R o r P DAC_VTARGET nRST OSC_OUT Y2 16MHZ OSC_IN R44 330R R41 330R R40 330R X2 GND1 GND2 2 4 X1 C19 18PF D3 RED HSMH-C170 D2 GREEN HSMG-C170 1 VDD_3V3 BOOT0 48 47 46 45 44 43 42 41 40 39 38 37 VDD_1 VSS_1 PB9 PB8 BOOT0 PB7 PB6 PB5 PB4 PB3 PA15 PA14 t e l o PA3 PA4 PA5 PA6 VDD_2 PB0 PB1 PB2 PE8 PE9 VSSSD/VREFSDVDDSD r P e 3 u d o s ( t c O ) o s b e t le 13 14 15 16 17 18 19 20 21 22 23 24 s b O D1 GREEN HSMG-C170 2 4 6 8 10 12 14 16 18 20 GND_STM I/O1 I/O4 GND _GND I/O2 I/O3 6 5 4 GND_STM R61 NP U9 ESDALC6V1P6 R57 NP 1 2 3 CON-10x2 70246-2004 J1 R58 NP R52 R53 R54 R55 100R 100R 100R 100R R49 0R VDD_3V3 GND_STM R50 0R 1 3 5 7 9 11 13 15 R51 0R +15V 2 4 6 8 10 12 14 16 CON-8x2 70246-1604 J2 GND_STM GSPG14102014DI1505 +5V STEVAL-PCC019V1 Schematic diagrams Figure 4. STEVAL-PCC019V1 circuit schematic (2 of 6) ) s t( c u d 5/11 11 DocID027093 Rev 1 GND_AL C18 100NF 3 5 GND T°C VDD NC ADC Logic SDA I2C i/f SCLK U7 TC74A0-3.3VAT 1 2 4 R112 0R GND_AL R113 NP R38 10K VDD_3V3 GND_AL GND_AL D6 BAS16 Q10 BC848BL R30 10K TP4 R39 10K GND_AL C66 NP TP6 GND_AL C61 100NF 10K R23 GND_AL Q6 BC848BL I2C_SDA_TEMP I2C_SCL_TEMP Temp Sensor R25 47K GND_AL R22 68K 2 - 3 + +15V U5A LM358AD 1 C63 2.2UF 25V C14 10NF GND_AL GND_AL R31 47K R26 1K !! Warning, Q7 is Isolated from Heatsink Ground !! Mounted together on heatsink NP C17 o s b R102 0R current limit = V(I_LIM) * 3.57 280mV 1A R34 22K C16 10UF 25V 1206 VDD_3V3 Allow 1s maximum turn ON CV Target = Vdac*7.9 (target 17V Dac =2.14V) R92 100K C11 1NF CV Loop TP2 GND_AL Q8 BC848BL 1 G 3 2 e t le R32 4.7K R28 10K C13 330PF GND_AL R33 470K 6 - C64 NP C1206 GND_AL C15 1NF c u d Note : Vshunt_N is referenced to GND_AL in power supply sheet (R101) 7 U5B LM358AD Current limitation 5 + C9 22UF 35V Current Limitation Loop Q7 STP160N75F3 R36 0.1R MP930-0.10-1% S D o r P VDD_3V3 DAC_ILIM EN_LOAD DAC_VTARGET 1 R21 470K s ( t c O ) 1 TP3 1 6/11 8 s b O t e l o 4 u d o 1 r P e TP5 1 + R37 1.00K R109 1K R111 47K R88 1.00K GND_AL R110 2.2K GND_AL C67 10NF 1 2 Q13 BC848BL VLOAD_P Option: External Active Load VLOAD_N ForceSense- GSPG14102014DI1510 2 1 J8 GMKDS_3/2-7.62"-2 VSHUNT_N VSHUNT_P 2 1 J9 GMKDS_3/2-7.62"-2 GND_AL R35 1.00K Q9 BSS123 CCLIM_INDIC J7 GMKDS_3/2-7.62"-2 GND_AL LOAD_POS Schematic diagrams STEVAL-PCC019V1 Figure 5. STEVAL-PCC019V1 circuit schematic (3 of 6) ) s t( PROG_ENB R63 1.00K R75 10K 330R R80 3 1 2 3 R72 47K R67 1.00K ASDA ASCL ACPL-M61L GND VDD U15 VDD3V3_B 4 5 6 C33 100NF GND_PRIM U12 Si8400AA GND_PRIM BSDA BSCL 7 6 GND_STM Q11 BC848BL R70 10K VDD_3V3 VDD3V3_B GND_STM GND_STM GND_STM C32 100NF R103 0R VDD_3V3 R66 1.00K VDD_3V3 Note : LED off == Output High == 19V disabled I2C_SDA_3 I2C_SCL_3 R74 10K PROG_ENA I2C_SDA_2 I2C_SCL_2 SEA_GND_EN I2C_SDA_1 I2C_SCL_1 R62 1.00K +24V VDD24V_B R76 1.00K 8 VIN U11 LM2931DR R69 100R R68 100R 5 INHIBIT 5 100R 100R INHIBIT VIN U14 LM2931DR R79 R78 R77 1.00K GND_STM 8 1 2 3 4 1 NC/ADJ GND_PRIM I/O4 I/O1 GND _GND I/O2 I/O3 NC/ADJ VOUT 4 1 6 5 4 C30 10UF 25V C58 10UF 25V GND_PRIM R82 330K R81 22K U13 ESDALC6V1P6 GND_PRIM 1 2 3 R73 330K R71 22K R115 NP VCC_PROGA GND_STM GND_STM Q15 BSS123 6 5 4 GND_STM I/O1 I/O4 GND _GND I/O3 I/O2 U10 ESDALC6V1P6 VOUT GND_STM R65 100R R64 100R GND GND GND GND VDD_3V3 8 BVDD 1 AVDD AGND 4 BGND 5 DocID027093 Rev 1 2 3 6 7 s b O t e l o r P e u d o GND GND GND GND s ( t c O ) o s b e t le o r P 2 3 6 7 D8 7-0215079-4 Main Domain *I2C1 & I2C2 *CV Load *MCU 1 2 3 4 J4 CON-AMP-FLAT-4P Note GND of conenctor is not connected by default - effectively GND of SEA01 is not connected to gnd of supply (current sensing thorugh ground) Note : 19V is shared between I2C1 & I2C2 !! But only one device at a time can be programmed 1 2 3 4 J5 CON-AMP-FLAT-4P 7-0215079-4 Isolated Domain *I2C3 c u d VCC_PROGB BAS16 D10 BAS16 D9 BAS16 1 2 3 4 J3 CON-AMP-FLAT-4P 7-0215079-4 STEVAL-PCC019V1 Schematic diagrams Figure 6. STEVAL-PCC019V1 circuit schematic (4 of 6) GSPG14102014DI1515 ) s t( 7/11 11 DocID027093 Rev 1 s b O t e l o R14 3.9K R117/R120 : for ADC protection if needed AGND R89 0R R17 1.2K 0.05% R16 10K 0.05% R15 1.2K 0.05% 2 Vcc D AVDD_3V3 U4 STG719 C60 100NF S2 S1 IN AGND GND 3 5 ADC Reference ADC Calibration (10%-90%) 6 4 1 AGND 6 4 1 6 4 1 S2 S1 IN S2 S1 IN ) s t( c u d VLOAD_N R91 NP C8 100NF C7 100NF R12 NP o r P Ref & ADC calib can be referenced either to AGND or VLOAD_N (take into account GND current) C6 1UF D11 1.22V LM4041-1.2 R13 0R R11 0R C68 1NF o s b GND_VREF AVDD_3V3 AGND R120 NP R10 1K 0.05% e t le Note :D7 : LM4041 from NS or ST can be used VREF_SEL VMEAS_VREF_SEL VSHUNT_N R117 0R s ( t c O ) Provision for Filtering/Scalling r P e VSHUNT_P C4 NP R9 22K 0.05% 1/200 ratio (1.2mVpp) D AGND GND 3 2 Vcc D AVDD_3V3 AGND GND 3 2 Vcc C5 100NF 5 U1 STG719 C59 100NF 5 U2 STG719 AVDD_3V3 AGND 8/11 R119 0R u d o VLOAD_N VLOAD_P Voltage Divider (1/23) VREF_ADC_SIGDEL ADC_IN ADC_IP ADC_VN ADC_VP Schematic diagrams STEVAL-PCC019V1 Figure 7. STEVAL-PCC019V1 circuit schematic (5 of 6) GSPG14102014DI1520 AGND DocID027093 Rev 1 M9 SPACER_5MM SPACER_5MM HOLE_3.2MM_6 HOLE_3.2MM_6 SPACER_5MM M11 HOLE_3.2MM_6 FIX3 M16 SLICER_M3 SPACER_5MM M13 HOLE_3.2MM_6 M15 SLICER_M3 SCREW _M3x6 FIX4 M2 CLIP_TO220 M22 CLIP_TO220 OPTICAL_TARGET MISC3 OPTICAL_TARGET OPTICAL_TARGET MISC2 MISC1 e t le M4 FIX2 FIX1 t e l o SCREW _M3x6 u d o s ( t c M17 SLICER_M3 SCREW _M3x6 SCREW _M3x6 r P e M14 M21 CLIP_TO220 o s b O ) M18 SLICER_M3 M10 M8 M24 USB-A_Mini-B USBA to Mini-B Cable, 1.5m long M12 s b O M23 MicroMatch_4pt Flat Cable, 1.27mm 250mm 4 CTS MicroMatch Thermal Paste M5 ISOLATOR_TO220 SIL PAD **Plastic** Slicer Thermal Paste SCREW _M3x10 M6 M20 SLICER_M3 GND_AL R116 0R SCREW _M3x10 M7 M19 SLICER_M3 HS1 SK480/50/SA Extruded Heatsink, 4.2 K/W , 50x28x10mm Fisch Elektronik STEVAL-PCC019V1 Schematic diagrams Figure 8. STEVAL-PCC019V1 circuit schematic (6 of 6) GSPG14102014DI1525 o r P c u d ) s t( 9/11 11 Revision history 4 STEVAL-PCC019V1 Revision history Table 1. Document revision history Date Revision 22-Oct-2014 1 Changes Initial release. ) s t( c u d e t le o s b O ) s ( t c u d o r P e t e l o s b O 10/11 DocID027093 Rev 1 o r P STEVAL-PCC019V1 ) s t( c u d e t le o r P o s b O ) s ( t c u d o r P e 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. t e l o s b O 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. © 2014 STMicroelectronics – All rights reserved DocID027093 Rev 1 11/11 11