User's Guide SLVU928A - September 2013 - Revised October 2013 bq500212A bqTESLA Wireless Power TX EVM The bqTESLATM wireless power transmitter evaluation module from Texas Instruments is a highperformance, easy-to-use development module for the design of wireless power solutions. The singlechannel transmitter enables designers to speed the development of their end-applications. The bq500212A EVM evaluation module (EVM) provides all the basic functions of a Qi-compliant, wireless charger pad. The EVM is intended to be used with bq51013BEVM-764 or any other Qi-compliant receiver. The EVM supports both the WPC 1.0 and WPC 1.1 receivers. The transmitter EVM is a 5-V input design which powers a standard WPC low-power 5-W receiver. 1 2 3 4 5 6 7 8 9 Contents Applications .................................................................................................................. 2 bq500212AEVM-550 Electrical Performance Specifications .......................................................... 2 Modifications ................................................................................................................. 2 Connector and Test Point Descriptions .................................................................................. 3 4.1 Input/Output Connections ......................................................................................... 3 4.2 Test Point Descriptions ............................................................................................ 4 Schematic and Bill of Materials ........................................................................................... 6 Test Setup .................................................................................................................. 11 6.1 Equipment ......................................................................................................... 11 6.2 Equipment Setup ................................................................................................. 12 bq500212AEVM-550 Assembly Drawings and Layout ............................................................... 14 Reference ................................................................................................................... 17 FCC and IC Regulatory Compliance .................................................................................... 18 List of Figures .......................................................................... .......................................................................... bq500212AEVM-550 Schematic, Page 3 of 3 .......................................................................... Equipment Setup .......................................................................................................... Efficiency versus Power, bq500212AEVM-550 Transmitter and HPA764 Receiver.............................. Assembly Top .............................................................................................................. Top Silk ..................................................................................................................... Top Layer ................................................................................................................... Layer 2 ...................................................................................................................... Layer 3 ...................................................................................................................... Bottom Layer ............................................................................................................... 1 bq500212AEVM-550 Schematic, Page 1 of 3 6 2 bq500212AEVM-550 Schematic, Page 2 of 3 7 3 4 5 6 7 8 9 10 11 8 12 13 15 15 16 16 17 17 List of Tables 1 bq500212AEVM-550 Electrical Performance Specifications .......................................................... 2 2 Bill of Materials .............................................................................................................. 8 bqTESLA, Dynamic Power Limiting are trademarks of Texas Instruments. Avid is a registered trademark of Avid Technology, Inc.. SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 1 Applications 1 www.ti.com Applications The bq500212AEVM-550 evaluation module demonstrates the transmitter portion of the bqTESLATM wireless power system. This transmitter EVM is a complete transmitter-side solution that powers a bqTESLATM receiver. The EVM requires a single 5-V power supply capable of up to 2 A to operate and combines the transmitter electronics, input power socket, LED indicators, and the transmitting coil on the single printed-circuit board (PCB). The open design allows easy access to key points of the electrical schematic. This EVM has the following features: * WPC 1.1 Foreign Object Detection (FOD) and WPC 1.0 Parasitic Metal Object Detection (PMOD) * Dynamic Power LimitingTM (DPL) allows operation from a 5-V supply with limited current capability (for example, a USB port) * 5-V input power which is really available * Transmitter-coil mounting pad providing the correct receiver interface * Compact power section design using the CSD97376 NexFET power stage * Standard WPC A11-type transmitter coil with no magnet * LED indicates power transfer or power fault state 2 bq500212AEVM-550 Electrical Performance Specifications Table 1 provides a summary of the EVM performance specifications. All specifications are given for an ambient temperature of 25C. Table 1. bq500212AEVM-550 Electrical Performance Specifications Parameter Notes and Conditions Min Typ Max Unit 4.50 5.0 5.50 V 2.0 Input Characteristics VIN Input voltage IIN Input current VIN = Nom, IOUT = Max 1.50 Input no-load current VIN = Nom, IOUT = 0 A 200 mA Input stand-by current VIN = Nom 20 mA A Output Characteristics - Receiver bq51013BEVM-764 VOUT IOUT Output voltage VIN = Nom, IOUT = Nom Output ripple VIN = Nom, IOUT = Max 4.5 5 5.1 V 200 mVPP VIN = Min to Max VIN = Min to Max 0 1 A Output overcurrent VIN = Nom 1 1.1 A 110 205 kHz Systems Characteristics 3 FS Switching frequency Switching frequency varies with load pk Peak efficiency VIN = Nom, P Out RX = 2.5 W 72 % Full-load efficiency VIN = Nom, IOUT = Max 70 % Modifications See the datasheet (SLUSBD6) when changing components. Use LED Mode - Resistor R23 to change the behavior of the status LED, D5, D7 and D9. The standard value is 42.2 k for control option 1, see the datasheet for additional settings. NTC - Connector JP1 provides the option for connecting a negative temperature coefficient (NTC) sensor for thermal protection, see the datasheet for additional settings. L1 and L3 - Common Mode Choke for additional input power filtering or output TX Coil. L1 - DLW5BTN101SQ2L - 6 A, 9 m, muRata L3 - DLW5BTN102SQ2L - 2 A, 24 m, muRata 2 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated Connector and Test Point Descriptions www.ti.com 4 Connector and Test Point Descriptions 4.1 Input/Output Connections The connection points are described in Section 4.1.1 through Section 4.1.8. 4.1.1 J1 - VIN Input power 5 V 100 mV, return at J2. 4.1.2 J2 - GND Return for input power, input at J1. 4.1.3 J3 -JTAG Factory use only. 4.1.4 J4 - Serial Interface Factory use only. 4.1.5 J5 - Micro USB Input power connector. 4.1.6 JP1 - NTC The connection point for the external temperature sensor. See the datasheet for more information. 4.1.7 JP2 - LED Mode External connection for LED MODE resistor, if R23 is removed. 4.1.8 JP3 - FOD / PMOD Enable (Not Used) If LOSS_THR resistor (Pin 43 to Gnd) is used, JP3 can be used to Enable or Disable FOD / PMOD. See the datasheet (SLUSBD6) for additional details. SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 3 Connector and Test Point Descriptions 4.2 www.ti.com Test Point Descriptions The test points are described in Section 4.2.1 through Section 4.2.20. 4.2.1 TP1 - Coil Monitor L / C Coil signal at junction between coil and capacitors. 4.2.2 TP2 - DPWM Signal Digital output signal from bq500212A to H-Bridge drive for U3. 4.2.3 TP3 - DPWM Signal Digital output signal from bq500212A to H-Bridge drive for U2. 4.2.4 TP4 - Analog GND Low-noise GND 4.2.5 TP5 - Not Used Not used. 4.2.6 TP6 - Not Used Not used. 4.2.7 TP7 - Not Used Not used. 4.2.8 TP8 - Not Used Not used. 4.2.9 TP9 - 3.3-VDC Voltage for low-power circuits, switched ON/OFF using U5 EN. 4.2.10 TP10 - Filtered 3.3 V 3.3-V output with additional filtering for A-to-D converters. 4.2.11 TP11 - Not Used Not used. 4.2.12 TP12 - Not Used Not used. 4.2.13 TP13 - Demodulation Comm + Output Primary communications channel, input to bq500212A, U1 from demodulation circuit. 4.2.14 TP14 - Snooze Output from bq500212A, U1 starts Snooze timer circuit. 4 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated Connector and Test Point Descriptions www.ti.com 4.2.15 TP15 - Not Used Not used. 4.2.16 TP16 - Not Used Not used. 4.2.17 TP17 - Not Used Not used. 4.2.18 TP18 - Spare Pin Unused output from bq500212A. 4.2.19 TP19 - I_Sense Input current-sense voltage, scale 1 V = 1 A. 4.2.20 TP20 -- Sleep Output from bq212A, U1 starts Sleep timer circuit. SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 5 Schematic and Bill of Materials 5 www.ti.com Schematic and Bill of Materials This section includes the schematics and bill of materials for the EVM. Figure 1 through Figure 3 illustrate the schematics for this EVM. U5 TLV70033DDC VIN 5 Vin J5 VIN 1 DC IN R13 0 2 2 L3 J1 C17 4.7uF C2 4.7uF 1 R4 1.0k R20 0 DC IN AGND 2 R55 1.0k C34 1.0uF R54 523k 7 6 1 1 R53 2.0MEG 3 TP9 OUT 3V3_VCC 5 GND EN NC 3V3_VCC C25 4.7uF 4 D8 BAT54 AGND R25 523k D1 BLU AGND C26 4.7uF IN AGND AGND Q8 3 DTC114EUAT106 C12 2.2uF PWR_UP AGND R45 1.0Meg TP4 R51 1MEG 1 GND 2 PWR_UP Q4 BSS138 D2 BAT54 Q7 BSS138 TP14 TP20 C32 100uF SLEEP SNOOZE C22 4.7uF AGND GND TIE SLEEP J2 R52 10.0k AGND AGND R18 10.0k AGND AGND GND U7 INA199A1 VIN VIN AGND 4 R37 1.0 ohm 7 R3 6 5 BOOT VDD BOOT_R VIN PGND VSW 1 L2 6.3 uH 2 2 3 R34 0 4 R44 0 1 C9 1uF 4 3V3_VCC GND R6 100k TP13 COMM+ R14 12.1k R29 10 COMM- DPWM-1B PWM VDD PGND VSW I_SENSE C16 0.1uF BOOT BOOT_R VIN DPWM-1B 8 7 6 AGND TP2 C15 0.1uF 5 R1 1.0 ohm C13 1uF C23 10uF C28 0.1uF 100nF - X7R GND GND 1 Parts with no values are not installed GND C29 0.1uF 100nF - X7R COMM+ R5 10.0k SKIP# C27 0.1uF 100nF - X7R C18 4700pF 3V3_VCC GND 3 TP1 L1 C33 10uF GND AGND CSD97376CQ4M 1 9 1.0 SKIP# I_SENSE 9 0.1uF PWM PGND DPWM-1A 8 C6 R46 1.0k TP19 C21 0.01uF U3 CSD97376CQ4M PGND DPWM-1A U2 6 3V3_VCC R36 1.0 ohm GND TP3 5 C31 0.1uF R32 .020 Ohm IN+ OUT IN- 3V3_VCC 3 C7 22uF 1 2 8 9 5 GND SNOOZE 4 C30 100nF - COG 50V C14 33pF COMMR26 10 AGND Figure 1. bq500212AEVM-550 Schematic, Page 1 of 3 6 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated Schematic and Bill of Materials www.ti.com SNOOZE_CHG SNOOZE_CHG SNOOZE_CAP R33 475 Temp Sensor 3V3_ADC R19 10.0k C24 4.7nF R9 10K 3V3_VCC C5 4.7uF R8 10k VIN VIN PWR_UP R10 76.8k C4 I_SENSE 4700pF R11 10k C10 NoPop 1 R12 NoPop SLEEP LED_A LED_B SNOOZE AGND 4 3 2 1 46 PWR_UP45 I_SENSE42 SLEEP 6 LED_A 7 LED_B 8 SNOOZE 9 3V3_VCC RESET AIN8 AIN3 T_SENSE AIN5 U1 BQ500212ARGZ BPCAP JTAG_TRSTN JTAG_TMS JTAG_TDI JTAG_TDO JTAG_TCK PMB_CTRL PMB_ALRT PMB_DATA PMB_CLK V_IN AIN7 I_IN DPWM_A DPMB_B MSP_SYNC DOUT_2B DOUT_4A DOUT_4B SLEEP MSP_RST/LED_A MSP_MISO/LED_B MSP_TEST AGND 35 31 30 29 28 27 R40 10.0k C20 1.0uF LED_C AGND SNOOZE_CHG LED_A R15 475 LED_B COMM+ COMM- LED_A SNOOZE_CHG COMM+ COMM- 21 22 37 38 39 40 /TRST TMS TDI TDO TCK 20 19 11 10 R43 10.0k LED_C D7 RED D9 OR 12 13 14 15 16 17 DPWM-1A R2 10.0 R17 3.6k R99 86.6k TP25 MSP_TDO/PROG MSP_MOSI/LPWR_EN BUZ_DC BUZ_AC LED_MODE PMOD_THR 26 25 24 23 R27 56.2k TP26 AGND TP27 R24 48.7k TP28 44 43 DPWM-1B R47 10.0 R22 NoPop JP2 LED_C 1 R50 475 JP3 AGND R48 3.6k R23 42.2k AGND 1 AGND COMM_A+ COMM_ACOMM_B+ COMM_B- DATA CLK AGND DATA CLK LED_B R16 475 D5 GRN MSP_TCK/CLK DOUT_TX DRV_CFG 47 36 32 49 COMM+ LED_C 18 AGND AGND DGND EPAD AGND 3V3_VCC R41 10.0k AGND /TRST TMS TDI TDO TCK TP18 1 COMM+ SNOOZE_CAP V33FB REFIN V33A 33 5 V33D 41 48 3V3_VCC C8 2.2uF C3 1.0uF 34 C1 1.0uF AGND D4 BAT54SW R7 22 C19 4.7uF AGND SNOOZE_CAP AGND 3V3_ADC 3V3_VCC JP1 SNOOZE_CAP R30 523k R28 523k C11 4.7uF TP10 3V3_VCC AGND D3 BAT54 Parts with no values are not installed AGND AGND AGND Figure 2. bq500212AEVM-550 Schematic, Page 2 of 3 SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 7 Schematic and Bill of Materials www.ti.com 1 TCK TDO TDI /TRST TMS 14 13 12 11 10 9 8 7 6 5 4 3 2 1 TCK AGND TDO TDI /TRST TMS CLK CLK AGND DATA DATA 1 2 3 4 5 6 7 8 9 10 J4 N2510-6002-RB J3 R21 R31 R35 R38 R49 R39 R42 1 1 1 1 1 1 1 3V3_VCC 1 3V3_VCC Parts with no values are not installed Figure 3. bq500212AEVM-550 Schematic, Page 3 of 3 Table 2 contains the BOM for this EVM. Table 2. Bill of Materials Designator Qty Description Manufacturer Part Number C1, C3, C20, C34 4 Capacitor, Ceramic, 1UF 16V 10% X7R 0603 TDK C1608X7R1C105K080AC Alternate Manufacturer Alternate PartNumber C2, C17 2 CAP, CERM, 4.7uF, 10V, +/-10%, X5R, 0805 AVX 0805ZD475KAT2A C4 1 Capacitor, Ceramic, 4700PF 50V 5% NP0 0603 TDK C1608C0G1H472J080AA C5 1 Capacitor, Ceramic, 4.7uF, 10V, X7R, 20% TDK CGB3B1X5R1A475M055AC Digi-Key 445-7400-2-ND C6, C15, C16, C31 4 Capacitor, Ceramic, 0.1UF 50V 10% X7R 0603 TDK C7 1 Capacitor, Ceramic, 22UF 25V 10% X5R 1210 Murata C1608X7R1H104K080AA TDK C1608X7R1H104K080AA GRM32ER61E226KE15L Digi-Key C8 1 Capacitor, Ceramic, 2.2UF 10V 10% X7R 0603 490-3889-1 TDK C1608X7R1A225K080AC Digi-Key C9, C13 2 445-5958-1 CAP, CERM, 1uF, 16V, +/-10%, X5R, 0603 Kemet C0603C105K4PACTU C11, C25 C12 2 Capacitor, Ceramic, 4.7UF 10V 20% X5R 0603 TDK CGB3B1X5R1A475M055AC 1 Capacitor, Ceramic Chip, 2.2UF 16V 10% X7R 1206 TDK C3216X7R1C225K/1.60 Digi-Key 445-1384-1 C14 1 Capacitor, Ceramic, 33PF 50V 5% NP0 0603 TDK C1608C0G1H330J080AA Digi-Key 445-1275-1 C18 1 Capacitor, Ceramic, 4700pF, 50V, X7R, 10% TDK C1608C0G1H472J080AA Digi-Key 445-7400-2-ND C19, C26 2 Capacitor, Ceramic, 4.7UF 10V 20% X5R 0603 TDK CGB3B1X5R1A475M055AC C21 1 Capacitor, Ceramic, 0.01uF, 50V, X7R, 10% TDK C1608X7R1H103K080AA Digi-Key 445-1311-1 C22 1 Capacitor, Ceramic, 4.7UF 10V 20% X5R 060 TDK CGB3B1X5R1A475M055AC C23, C33 2 CAP, CERM, 10uF, 10V, +/-10%, X5R, 1210 Kemet C1210C106K8PACTU C24 1 Capacitor, Ceramic, 4.7nF, 50V, X7R, 10% TDK CGA3E2X7R1H472K080AD Digi-Key 445-8828-1 C27, C28, C29 3 CAP, CERM, 0.1uF, 100V, +10/%, X7R, 1206 TDK C3216X7R2A104K 8 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated Schematic and Bill of Materials www.ti.com Table 2. Bill of Materials (continued) Designator Qty Description Manufacturer Part Number C30 1 CAP CER 0.1UF 50V 10% NP0 1210 TDK Corporation C3225C0G1H104K250AA Alternate Manufacturer Alternate PartNumber C32 1 Capacitor, Ceramic Chip, 100UF 6.3V 20% X5R 1206 TDK D1 1 Diode. LED 2X1.2MM 470NM BL WTR CLR SMD Kingbright Corp C3216X5R0J107M160AB TDK 445-6008-1 APT2012QBC/D Digi-Key D2, D3, D8 3 Diode, Schottky, 200-mA, 30-V Vishay-Liteon BAT54 754-1437-1-ND D4 1 Diode, Dual Schottky, 200mA, 30V On Semi BAT54SWT1G D5 1 Diode. LED 2X1.2MM 568NM GN WTR CLR SMD Kingbright Corp D7 1 Diode. LED 2X1.2MM 640NM RD WTR CLR SMD Kingbright Corp APT2012SGC Digi-Key 754-1131-1 APT2012SRCPRV Digi-Key D9 1 Diode. LED 2X1.2MM 601NM OR WTR CLR SMD 754-1132-1-ND Kingbright Corp APT2012SECK Digi-Key L2 1 754-1130-1 TX Coil Wurth Elektronik 760-308-111 Q4, Q7 Q8 2 MOSFET, Nch, 50V, 0.22A, 3.5 Ohm Fairchild BSS138 1 Transistor, Digital NPN, 50 V, 100 mA Rohm DTC114EUA R1, R3, R37 3 Resistor, Chip, 1.0 OHM 1/10W 5% 0603 SMD Yageo, Yageo, Yareo RC0603JR-071RL Digi-Key 311-1.0GRCT R2, R47 2 Resistor, Chip, 10 OHM 1/10W 5% 0603 SMD Yageo RC0603JR-0710RL Digi-Key 311-10GR R4, R46, R55 3 Resistor, Chip, 1.00K OHM 1/10W 1% 0603 SMD Std, Yageo, Yageo RC0603FR-071KL [NoValue], Digi-Key, Digi-Key [NoValue], 311-1.00KH, 311-1.00KH R5, R8, R9, R11, R18, R19, R40, R41, R43, R52 10 RES 10.0K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-0710KL R6 1 Resistor, Chip, 100K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-07100KL Digi-Key 311-100KHRTR R7 1 Resistor, Chip, 22 OHM 1/8W 5% 0805 SMD Yageo RC0805JR-0722RL Digi-Key 311-22ARCT R10 1 Resistor, Chip, 76.8K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-0776K8L Digi-Key 311-76.8KHRCT R13, R20, R34, R44 4 RES, 0 ohm, 5%, 0.25W, 1206 Vishay-Dale CRCW12060000Z0EA R14 1 Resistor, Chip, 12.1K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-0712K1L Digi-Key 311-12.1KHRCT R15, R16, R33 3 Resistor, Chip, 475 OHM 1/10W 1% 0603 SMD Yageo RC0603FR-07475RL Digi-Key 311-475HRCT, 311-475HRCT, 311-475HRC R17 1 Resistor, Chip, 3.60K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-073K6L Digi-Key 311-3.60KHR R22 1 Resistor, Chip, 56.2K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-0756K2L Digi-Key 311-56.2KHRCT R23 1 Resistor, Chip, 42.2K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-0742K2L Yageo 311-42.2KHRCT R25, R28, R30, R54 4 Resistor, Chip, 523K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-07523KL Digi-Key 311-523KHRCT R26, R29 2 Resistor, Chip, 10 OHM 1/10W 5% 0603 SMD Yageo RC0603JR-0710RL Digi-Key 311-10GR, 311-10GRCT R32 1 Resistor, Chip, 0.02 OHM 1/2W 1% 0805 SMD Panasonic Electronic Components ERJ-6BWFR020V R36 1 Resistor, Chip, 1.0 OHM 1/10W 5% 0603 SMD Yareo RC0603JR-071RL Digi-Key 311-1.0GRCT R45 1 RES, 1.0Meg ohm, 5%, 0.1W, 0603 Vishay-Dale CRCW06031M00JNEA R48 1 Resistor, Chip, 3.60K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-073K6L Digi-Key 311-3.60KHRCT R50 1 Resistor, Chip, 475 OHM 1/10W 1% 0603 SMD Yageo RC0603FR-07475RL Digi-Key 311-475HRCT R51 1 Resistor, Chip, 1.00M OHM 1/10W 1% 0603 SMD Yageo RC0603FR-071ML Digi-Key 311-1.00MHRCT R53 1 Resistor, Chip, 2.00M OHM 1/10W 1% 0603 SMD Yageo RC0603FR-072ML Digi-Key 311-2.00MHRCT R99 1 RES, 86.6k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-0786K6L U1 1 IC, Qi Compliant Wireless Power Transmitter Manager TI BQ500212ARGZ None U2, U3 2 IC, Synchronous Buck NexFETPower Stage TI CSD97376CQ4M None SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 9 Schematic and Bill of Materials www.ti.com Table 2. Bill of Materials (continued) Designator Qty Description Manufacturer Part Number Alternate Manufacturer U5 1 IC REG LDO 3.3V 200mA SOT-23-5 TI TLV70033DDC Digi-Key U7 1 IC, Current Monitor, High or Low Side Measurement, Bi-Directional Zero-Drift Series TI INA199A1DCKR None C10 0 Capacitor, Ceramic, 50V, C0G, 5% TDK C1608C0G1H330J080AA L1, L3 0 Inductor, Toroid, yyA, zzmilliohm muRata DLW5BSNxxxSQ2 R12, R21, R31, R35, R38, R39, R42, R49 0 Resistor, Chip, 1/16W, 1% N/A Open R24 0 Resistor, Chip, 1/16W, 1% Yageo RC0603FR-0748K7L R27 0 Resistor, Chip, 56.2K OHM 1/10W 1% Yageo RC0603FR-0756K2L 10 bq500212A bqTESLA Wireless Power TX EVM DigiKey Alternate PartNumber 311-48.7KHRCT-ND SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated Test Setup www.ti.com 6 Test Setup 6.1 Equipment 6.1.1 bqTESLATM Receiver Use the bq51013BEVM-764 or a Qi-compliant receiver to work with this EVM. 6.1.2 Voltage Source The input voltage source must provide a regulated DC voltage of 5 V and deliver at least 2-A continuous load current; current limit must be set to 3 A. CAUTION To help assure safety integrity of the system and minimize risk of electrical shock hazard, always use a power supply providing suitable isolation and supplemental insulation (double insulated). Compliance to IEC 61010-1, Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, Part 1, General Requirements, or its equivalent is strongly suggested, including any required regional regulatory compliance certification approvals. Always select a power source that is suitably rated for use with this EVM as referenced in this user manual. External Power Supply Requirements: Nom Voltage: 5.0 VDC Max Current: 3.0 A Efficiency Level V External Power Supply Regulatory Compliance Certifications: Recommend selection and use of an external a power supply which meets TI's required minimum electrical ratings in addition to complying with applicable regional product regulatory/safety certification requirements such as (by example) UL, CSA, VDE, CCC, PSE, and so forth. 6.1.3 Meters Monitor the output voltage at the bq51013BEVM-764 test point TP7 with a voltmeter. Monitor the input current into the load with an appropriate ammeter. You can also monitor the transmitter input current and voltage, but the meter must use the averaging function for reducing error, due to communications packets. 6.1.4 Loads A single load is required at 5 V with a maximum current of 1 A. The load can be resistive or electronic. 6.1.5 Oscilloscope Use a dual-channel oscilloscope with appropriate probes to observe the COMM_DRV signal at bq51013BEVM-764 TP3 and other signals. 6.1.6 Recommended Wire Gauge For proper operation, use 22-AWG wire when connecting the EVM to the input supply and the bq51013BEVM-764 to the load. SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 11 Test Setup 6.2 www.ti.com Equipment Setup * * * 6.2.1 With the power supply OFF, connect the supply to the bqTESLATM transmitter. Connect the VIN positive power source to J1, and connect the negative terminal of the VIN source to J2. Do not place the bqTESLATM receiver on the transmitter. Connect a load to J3 with a return to J4, monitor current through the load with the ammeter, and monitor the current to the load at TP7. All voltmeters must be Kelvin connected (at the pin) to the point of interest. Equipment Setup Diagram The diagram in Figure 4 shows the test setup. Wireless Transmitter Wireless Receiver A OUT-J2 J1 POS A VIN + - Voltmeter AC1 LP V J2 RTN V TP1 AC1 A Ammeter TP2 AC2 OUT-TP7 VRECT-TP12 LS V RL AC2 GND-J4 + - Power Supply Oscilloscope Figure 4. Equipment Setup 6.2.2 EVM Procedures This section guides the user through a few general test procedures to exercise the functionality of the presented hardware. Some key notes follow. 6.2.2.1 Start-Up No Receiver Turn on VIN, and observe that the blue power LED, D1, illuminates. Status LEDs D7, D9 and D5 are OFF until the power transfer starts. Apply the scope probe to the test point, TP1, and observe single-pulse bursts approximately every 500 ms. This is a Digital Ping to begin communications with a receiver placed on the TX coil. 6.2.2.2 Apply Receivers Place the bq51013BEVM-764 EVM on the top of the transmitting coil. Align the centers of the receiving and transmitting coils across each other. In the next few seconds, observe that the status LED, D5, flashes green, indicating that communication between the transmitter and the receiver is established and that power transfer has started. * The status LED, D5, flashes a green light during power transfer. * Typical output voltage is 5 V, and the output current range is 0 mA to 1 A. * Observe a continuous sine-wave on the test point TP1 when power transfer is active; the frequency is between 110 kHz and 205 kHz. * Make tests and measurements applicable to a normal 5-V power supply. 12 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated Test Setup www.ti.com 6.2.2.3 Efficiency To measure system efficiency, measure the output voltage, the output current, input voltage, and input current and calculate efficiency as the ratio of the output power to the input power. Connect voltage meters at the input and output of TX and RX (see Figure 4). Average the input current; the comm pulses modulate the input current, distorting the reading. See Figure 5 for efficiency. Figure 5 shows efficiency with standard EVM (C30-COG but C29, C28, and C27 - X7R). Also shown is efficiency with C30, C29, C28, and C27 all capacitors COG type. Figure 5. Efficiency versus Power, bq500212AEVM-550 Transmitter and HPA764 Receiver 6.2.2.4 Efficiency Improvements Efficiency improvements can be made with component changes. The EVM uses an integrated power stage device that combines both the driver and two MOSFETs into one package, CSD97376. Similar devices with lower RDSon MOSFETs are available. The CSD97374 reduces RDSon by about 50% and improves efficiency by 2% to 4%. This device is pin-to-pin compatible and is a drop in replacement. To reduce cost, the EVM uses a mix on COG and X7R capacitors for the resonant capacitors, C28, C29, C30 and C27. X7R is lower cost but has higher ESR which results in higher loss. If all COG capacitors are used, efficiency increases by 2% to 4%. Note that changing the efficiency of the unit and reducing loss (or increasing loss) changes the FOD performance and may require re-calibration. This would require FOD_CAL resistor, R99 to change along with FOD_Threshold resistor, R24. FOD Calibration procedure would need to be repeated. 6.2.2.5 Dynamic Power Limiting Dynamic Power Limiting (DPL) allows operation from a 5-V supply with limited current capability. Input voltage is monitored at Pin 46 though a voltage divider network. When input voltage decreases to 4.2 V, the operating point is adjusted to reduce load and increase input voltage to 4.5 V. 6.2.2.6 Thermal Protection, NTC Thermal protection is provided by an NTC resistor connected to JP1. At 1 V on the sense side (U1-2), the thermal fault is set, and the unit is shut down, The status LED, D5, illuminates red. The typical resistor value for fault is 850 . The system tries to restart in 5 minutes. SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 13 bq500212AEVM-550 Assembly Drawings and Layout 6.2.2.7 www.ti.com Foreign Object Detection The bq500212A EVM incorporated Foreign Object Detection (FOD) call in WPC 1.1. Power loss is calculated by comparing the power sent to the receiver (RX) with the power the RX reported receiving, less know power loss. The transmitter determines the power sent to the RX by measuring input power and calculating internal losses. The RX measures the power it received and also calculates losses. The RX sends this information to the driver (TX) in a digital word, message packet. Unaccounted for power loss is presumed to be a foreign object on the charging pad. Should this lost power exceed the threshold set by R24, a FOD fault is set and power transfer is stopped. Three key measurements for the TX FOD calculation: * Input Power - Product of input voltage and current. Input voltage is measured at Pin 46 though R10 and R11. Input current is measured using sense resistor R32 and current sense amp U7. Both measurements need to be very accurate. * Power Loss in Transmitter - This is an internal calculation based on the operating point of the transmitter. The calculation is adjusted using FOD_Cal resistor, R99. This calculation changes with external component changes in the power path such as MOSFETs, resonate capacitors, and TX coil. Recalculation of R99 and R24 will be required. * Receiver Reported Power - The receiver calculates and reports power it receives in the message packet "Received Power Packet (0X04)". The FOD threshold on the EVM is set to 350 mW, R24 is set to 48.7 k. Increasing R24 increases the threshold and reduces the sensitivity to foreign objects. This loss threshold is determined after making a measurement of transmitter performance using a FOD Calibration Receiver similar to unit manufactured by Avid(R) Technology. Contact Texas Instruments for the Foreign Object Detection Calibration Procedure for bq500212A. 6.2.2.8 WPC Certification The bq500212AEVM-550 was tested and certified to WPC version 1.1.1, July 2013. 7 bq500212AEVM-550 Assembly Drawings and Layout Figure 6 through Figure 11 show the design of the bq500212AEVM PCB. The EVM has been designed using a 4-layer, 2-oz, copper-clad circuit board 13.2 cm x 7.24 cm with all components in a 4.0-cm x 5.0cm active area on the top side and all active traces to the top and bottom layers to allow the user to easily view, probe, and evaluate the bq500212A control IC in a practical application. Moving components to both sides of the PCB or using additional internal layers offers additional size reduction for spaceconstrained systems. Gerber files are available for download from the EVM product folder. A 4-layer PCB design is recommended to provide a good low-noise ground plane for all circuits. A 2-layer PCB presents a high risk of poor performance. Grounding between the bq500212A GND pin 47, 36, and 32 and filter capacitor returns C19, C1, C5, and C3 should be a good low-impedance path. Coil Grounding - A ground plane area under the coil is recommended to reduce noise coupling into the receiver. The ground plane for the EVM is slightly larger than the coil footprint and grounded at one point back to the circuit area. Note: The clear plastic cover thickness (0.93 in or 2.4 mm) is the z-gap thickness for the transmitter. 14 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated bq500212AEVM-550 Assembly Drawings and Layout www.ti.com J5 J2 R4 C17 D1 L3 TP1 TP4 C28 C27 C30 R99 C9 C13 U3 C33 U2 R3 R1 R9 JP2 C6 1 TP3 C23 R27 C15 TP2 R24 C7 R22 SH-J1 JP3 L1 C29 C2 C18 L2 R32 R23 R46 U1 C1 C19 C5 C3 R29 R12 C14 C20 R5 R6 R11 R40 C10 R14 R10 R41 C4 C26 TP10 R18 R26 C8 R53 C34 R16 R50 R15 Q4 R52 C11 R28 TP14 TP20 D3 C24 R54 C25 R17 R48 U7 R45 TP19 C16 JP1 R37 R36 TP9 U5 C32 Logo3 R2 R43 TP13 D5 R55 Q8 TP18 R25 R7 D9 C21 R47 C22 D7 C31 C12 R51 R19 R8 R33 R30 D4 J3 J4 1 1 J1 Figure 6. Assembly Top Figure 7. Top Silk SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 15 bq500212AEVM-550 Assembly Drawings and Layout www.ti.com Figure 8. Top Layer Figure 9. Layer 2 16 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated Reference www.ti.com Figure 10. Layer 3 Figure 11. Bottom Layer 8 Reference For additional information about the bq500212AEVM-550 low-power, wireless, power evaluation kit from Texas Instruments, visit the product folder on the TI Web site at http://www.ti.com/product/bq500212A SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback bq500212A bqTESLA Wireless Power TX EVM Copyright (c) 2013, Texas Instruments Incorporated 17 FCC and IC Regulatory Compliance 9 www.ti.com FCC and IC Regulatory Compliance REGULATORY COMPLIANCE INFORMATION As noted in the EVM User's Guide and/or EVM itself, this EVM is subject to the Federal Communications Commission (FCC), Industry Canada (IC) and European Union CE Mark rules. FCC - FEDERAL COMMUNICATIONS COMMISSION Part 18 Compliant Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 18 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:--Reorient or relocate the receiving antenna. * Increase the separation between the equipment and receiver. * Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. * Consult the dealer or an experienced radio/TV technician for help. Note: There is no required maintenance of this device from a FCC compliance perspective. IC - INDUSTRY CANADA ICES-001 Compliant This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme a la norme NMB-001 du Canada. 18 bq500212A bqTESLA Wireless Power TX EVM SLVU928A - September 2013 - Revised October 2013 Submit Documentation Feedback Copyright (c) 2013, Texas Instruments Incorporated EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Should this evaluation board/kit not meet the specifications indicated in the User's Guide, the board/kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. Please read the User's Guide and, specifically, the Warnings and Restrictions notice in the User's Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or contact TI. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used. TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. REGULATORY COMPLIANCE INFORMATION As noted in the EVM User's Guide and/or EVM itself, this EVM and/or accompanying hardware may or may not be subject to the Federal Communications Commission (FCC) and Industry Canada (IC) rules. For EVMs not subject to the above rules, this evaluation board/kit/module is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer use. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES-003 rules, which are designed to provide reasonable protection against radio frequency interference. Operation of the equipment may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. General Statement for EVMs including a radio User Power/Frequency Use Obligations: This radio is intended for development/professional use only in legally allocated frequency and power limits. Any use of radio frequencies and/or power availability of this EVM and its development application(s) must comply with local laws governing radio spectrum allocation and power limits for this evaluation module. It is the user's sole responsibility to only operate this radio in legally acceptable frequency space and within legally mandated power limitations. Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization. For EVMs annotated as FCC - FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant Caution This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Interference Statement for Class A EVM devices This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: * Reorient or relocate the receiving antenna. * Increase the separation between the equipment and receiver. * Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. * Consult the dealer or an experienced radio/TV technician for help. For EVMs annotated as IC - INDUSTRY CANADA Compliant This Class A or B digital apparatus complies with Canadian ICES-003. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Concerning EVMs including radio transmitters This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Concerning EVMs including detachable antennas Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Cet appareil numerique de la classe A ou B est conforme a la norme NMB-003 du Canada. Les changements ou les modifications pas expressement approuves par la partie responsable de la conformite ont pu vider l'autorite de l'utilisateur pour actionner l'equipement. Concernant les EVMs avec appareils radio Le present appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisee aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioelectrique subi, meme si le brouillage est susceptible d'en compromettre le fonctionnement. Concernant les EVMs avec antennes detachables Conformement a la reglementation d'Industrie Canada, le present emetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inferieur) approuve pour l'emetteur par Industrie Canada. Dans le but de reduire les risques de brouillage radioelectrique a l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnee equivalente (p.i.r.e.) ne depasse pas l'intensite necessaire a l'etablissement d'une communication satisfaisante. Le present emetteur radio a ete approuve par Industrie Canada pour fonctionner avec les types d'antenne enumeres dans le manuel d'usage et ayant un gain admissible maximal et l'impedance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est superieur au gain maximal indique, sont strictement interdits pour l'exploitation de l'emetteur. SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER Important Notice for Users of EVMs for RF Products in Japan This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry's Rule for Enforcement of Radio Law of Japan, Use this product only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product, or Use of this product only after you obtained the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to this product. Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp 1. 2. 3. 61118328173 http://www.tij.co.jp SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use. It is intended solely for use for preliminary feasibility evaluation in laboratory/development environments by technically qualified electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems and subsystems. It should not be used as all or part of a finished end product. Your Sole Responsibility and Risk. You acknowledge, represent and agree that: 1. 2. 3. 4. You have unique knowledge concerning Federal, State and local regulatory requirements (including but not limited to Food and Drug Administration regulations, if applicable) which relate to your products and which relate to your use (and/or that of your employees, affiliates, contractors or designees) of the EVM for evaluation, testing and other purposes. You have full and exclusive responsibility to assure the safety and compliance of your products with all such laws and other applicable regulatory requirements, and also to assure the safety of any activities to be conducted by you and/or your employees, affiliates, contractors or designees, using the EVM. Further, you are responsible to assure that any interfaces (electronic and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard. Since the EVM is not a completed product, it may not meet all applicable regulatory and safety compliance standards (such as UL, CSA, VDE, CE, RoHS and WEEE) which may normally be associated with similar items. You assume full responsibility to determine and/or assure compliance with any such standards and related certifications as may be applicable. You will employ reasonable safeguards to ensure that your use of the EVM will not result in any property damage, injury or death, even if the EVM should fail to perform as described or expected. You will take care of proper disposal and recycling of the EVM's electronic components and packing materials. Certain Instructions. It is important to operate this EVM within TI's recommended specifications and environmental considerations per the user guidelines. Exceeding the specified EVM ratings (including but not limited to input and output voltage, current, power, and environmental ranges) may cause property damage, personal injury or death. If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and intended loads. Any loads applied outside of the specified output range may result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, some circuit components may have case temperatures greater than 60C as long as the input and output are maintained at a normal ambient operating temperature. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors which can be identified using the EVM schematic located in the EVM User's Guide. 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