TS51224 Wireless Power Receiver and Battery Charger WIRELESS CHARGING Features * * * * * * * * * * * * * * * * Description 40V maximum input voltage Single-cell Li-Ion or Li-Polymer charger with programmable charging current and topoff voltage System rail available with deeply discharged battery Integrated switches for narrow VDC power path management Supports Qi, AirFuel Inductive and Resonant (PMA, A4WP) and proprietary charging standards Up to 2W combined system/battery power Better than 87% AC-DC efficiency to the system Better than 83% AC-DC efficiency to the battery Integrated switches for load modulation Integrated frequency detection to support bidirectional communication TX to RX CPU alert or reset signal Integrated minimum load current sink Thermal shutdown at 1300C junction temperature and over-current protection Low external component count Junction operating temperature -400C to 1250C Product is lead-free, halogen-free, RoHS / WEEE compliant TS51224 is a fully-integrated wireless power receiver and battery charger for low-power, wearable applications that require a low-cost and space-saving solution. The TS51224 can operate by itself as a single-chip wireless power receiver in proprietary applications. It can also operate in conjunction with a wireless power controller or an application microcontroller to support the Qi, PMA or A4WP wireless charging standards as well as proprietary standards up to 2W combined system/battery power. Applications * * * * * * * * * Wearables o Watches o Bracelets o Fitness Bands o Smart Jewelry o Smart Glasses Health Monitors Electric Toothbrushes Tablets Wireless Keyboard and Mouse Medical Applications Wireless Headsets ID Tags Augmented Reality Typical Application Circuit TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 1 of 20 Semtech Ball Configuration Figure 1: TS51224 Ball Configuration (Top view with ball 1 designator) TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 2 of 20 Semtech Ball Description Ball Number Ball Name A4 BST B4 Function Description Bootstrap capacitor Bootstrap capacitor for buck regulator high-side driver, capacitor between BST pin and SW pin CHG_DIS Charge disable Disables battery charging when pulled high A3 COMM1 Load modulation switch Pull-down for VAC1 modulation capacitor E3 COMM2 Load modulation switch Pull-down for VAC2 modulation capacitor C4 EOC End-of-Charge indicator Toggles low when the charger gets to the end-ofcharge state A5 FB Feedback input BUCK feedback input and blocking FET input D3 FREQ Frequency detector output Open drain output signal, divided-by-8 version of the frequency of the input AC power signal B1, D1 GND Power ground Ground D5 ISP Current Sense Negative battery terminal connection and current sensing node E4 MOD_CFG Modulation configuration Configures the internal modulator to start up in standalone mode or in bypass mode. Also configures the PDC voltage in standalone mode. MCU modulation input Active high input to the modulator selection logic, with internal 100k pull-down. If repeated transitions are detected on this pin, the integrated modulator is bypassed and MOD_EN controls the COMM switches. MCU interrupt output/reset signal Active low open drain output activated when TX sends an ALERT command D4 MOD_EN B3 nALERT A2, B2, D2, E2 PDC Input power Rectified input voltage C1, C2 SW Switching node BUCK regulator switching node B5 SYSOUT System output power System output power connection C3 THERM Thermistor connection Thermistor connection used for system temperature monitoring E5 TOP_SET Topoff voltage configuration Configures the topoff voltage of the charger A1 VAC1 Coil input AC power input from the resonator coil E1 VAC2 Coil input AC power input from the resonator coil C5 VBAT Battery node Positive battery terminal connection TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 3 of 20 Semtech Functional Block Diagram PDC Minimum Load BST SW VAC1 Half Sync Rectifier VAC2 Buck Regulator FB SYSOUT GND VBAT Frequency Detection Charging Controller ISP COMM1 COMM2 COMM Switch TOP_SET FREQ Div/8 nALERT TX to RX Alert/Reset THERM WARN 0.5V CHG_DIS SHUTDOWN EOC 0.225V MOD_EN MOD_CFG Data Modulator Figure 2: TS51224 Block Diagram TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 4 of 20 Semtech Absolute Maximum Ratings Over operating free-air temperature range unless otherwise noted (1, 2) Parameter Value Unit -0.3 to 42 V BST -0.3 to (SW+6) V SW -1 to 42 V CHG_DIS, EOC, FB, FREQ, nALERT, MOD_EN, MOD_CFG, SYSOUT, THERM, TOP_SET, VBAT -0.3 to 6 V -0.7 to 0.7 V 2 kV 500 V 260 C COMM1, COMM2, PDC, VAC1, VAC2 ISP Electrostatic Discharge--Human Body Model Electrostatic Discharge--Machine Model Peak IR Reflow Temperature (10 to 30 seconds) Notes: (1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) All voltage values are with respect to network ground terminal GND. Recommended Operating Conditions Parameter Symbol PDC Capacitance (1) Conditions CIN Min Typ Max Unit 2.2 10 F BUCK Output Capacitance(1) COUT FSW=1.3MHz, IOUT_MAX= 50mA 8.8 44 F (1) COUT FSW=1.3MHz, IOUT_MAX = 400mA 20 44 F 17.6 47 nF BUCK Output Capacitance BUCK Bootstrap Capacitor CBST Output Filter Inductor LOUT FSW=1.3MHz, IOUT_MAX = 50mA 1.5 3.3 H Output Filter Inductor LOUT FSW=1.3MHz, IOUT_MAX = 400mA 1.5 4.7 H RX Coil LIN FBR = 1MHz 11 H RX Series Resonant Capacitor Cs FBR = 1MHz 10 nF COMM Modulation Capacitors CC1, CC2 FBR = 1MHz 1 nF Rectified Voltage VPDC Bridge Current IBR Rectification Frequency FBR 3.5 100 12 40 V 50 300 mA 1000 6780 kHz COMM Current ICOMM 50 mA Charger Output Current IRANGE 500 mA 4.1 4.4 V 0 3 V 500 mA 5.5 V Topoff Voltage Range VTOP_RANGE TOP_SET Pin Range VTOP_SET_RANGE Buck Regulator Output Current High Level Input Voltage Valid set point range Valid TOP_SET pin voltage range IOUT_MAX VIH CHG_DIS, MOD_EN 1.3 Low Level Input Voltage VIL CHG_DIS, MOD_EN 0 0.54 V Notes: (1) Specified capacitance includes allowance for voltage derating, tolerance, temperature, and aging. Select capacitors that meet the specified minimum capacitance. TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 5 of 20 Semtech Electrical Characteristics Electrical Characteristics, TJ = -40C to 85C, unless otherwise noted Parameter Symbol Conditions Min Typ Max Unit Synchronous Rectifier Low-Side Bridge FET DrainSource On-State Resistance RDSON_BR High-Side Bridge Diode Forward Voltage VD_BR 400 m IBR = 150mA 500 mV ICOMM = 50mA 10 Capacitive Modulation Switches COMM FET Drain-Source On-State Resistance RDSON_COMM Power On Reset Power On Reset Voltage VPDC-POR Power On Reset Hysteresis VPDC-POR_HYST Internal logic reset clear, internal logic/modulator ready (1) 2.7 3.0 3.4 V 0.35 V IddPWM PDC current, Buck Regulator PWM mode, VPDC=12V, VAC1=VAC2=0V, ILOAD=0A, MOD_EN=0, external feedback resistors, RTOTAL=1M 15 mA IddPFM PDC current, Buck Regulator PFM mode, VPDC=12V, VAC1=VAC2=0V, ILOAD=0A, MOD_EN=0, external feedback resistors, RTOTAL=1M 4 mA IddBK_10mA_OFF PDC current, Buck Regulator OFF, VPDC=4.5V, VAC1=VAC2=0V, MOD_EN=0, 10mA current source off, external feedback resistors, RTOTAL=1M 3 mA IddBK_OFF PDC current, Buck Regulator OFF, VPDC=4.5V, VAC1=VAC2=0V, MOD_EN=0, 10mA current source on, external feedback resistors, RTOTAL=1M 13 mA Quiescent Current Quiescent Current, PWM mode Quiescent Current, PFM mode Quiescent Current, Buck Off, 10mA Current Source Off Quiescent Current, Buck Off, 10mA Current Source On TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 6 of 20 Semtech Electrical Characteristics Parameter Charger Symbol Min Typ Max Unit 1C mode 20 25 30 mV VISP_0p5C 0.5C mode 10 12.5 15 mV VISP_0p1C Precharge (0.1C) mode 1.5 2.5 3.5 mV 1C Charge Voltage Threshold V1C_Charge 3.05 3.15 3.25 V Charger Dropout VDrop_CHG VBAT rising SYSOUT-VBAT in 1C charging mode, PWM mode VISP_1C ISP Voltage On Resistance RON,CHG Conditions 100 (1) mV 100 m Temperature Sense THERM Output Current ITHERM WARN Voltage SHUTDOWN Voltage 18 20 22 A VWARN,FALLING VTHERM falling 0.485 0.505 0.525 V VWARN,RISING VTHERM rising 0.776 0.805 0.834 V VSTOP,FALLING VTHERM falling 0.22 0.235 0.25 V VSTOP,RISING VTHERM rising 0.32 0.335 0.35 V 50 100 m 1 A Blocking Switch On Resistance RON,BLK Off State Leakage (1) IOFF Topoff TOP_SET Pin Set Point Current Topoff Voltage Offset TS51224 Final Datasheet June 19, 2017 ITOP VTOP_OFFSET Rev. 1.0 TJ = 250C RTOP_SET = 0 www.semtech.com 17 20 23 A 4.08 4.1 4.12 V 7 of 20 Semtech Electrical Characteristics Parameter Symbol Conditions Min Typ Max Unit Buck Regulator Input PDC Under-voltage Lockout PDC Under-voltage Lockout Hysteresis VPDC-UVLO Buck Regulator = Off 4.3 V VPDC-UVLO-HYST Buck Regulator = Off 180 mV CHG_DIS, MOD_EN Digital Inputs Pull-Down Resistance RPD 68 100 144 k EOC, FREQ, nALERT Open Drain Output EOC High Level Output Leakage IOH_LEAK_EOC VIO = 5V 5 A FREQ, nALERT High Level Output Leakage IOH_LEAK VIO = 5V 0.01 Low Level Output Voltage VOD_OL ISINK = 3mA (2) 1 A 0.4 V 146 C Thermal Protection Thresholds Thermal Shutdown Junction Temperature TSD Thermal Shutdown Hysteresis TSD_HYST Notes: (1) This parameter is not tested in production. (2) nALERT only tested as pass / fail. (1) 130 (1) 10 C Regulator Characteristics Electrical Characteristics, TJ = -40C to 85C, VPDC=12V, FSW=1.3MHz, LOUT=4.7H, COUT=44F, CBST=22nF, unless otherwise noted Parameter Symbol Conditions Min Typ Max Unit SYSOUT Precharge Voltage VOUT-PWM VBAT < 3.1V, PWM mode 3.2 3.3 3.5 V High-Side Switch ON Resistance RDSON_HS ISW = -0.15A (1) 450 m Low-Side Switch ON Resistance RDSON_LS ISW = 0.15A (1) 300 m Output Over Current Detect IOCD 1320 mA Buck Switching Frequency Fsw Soft Start Ramp Time TSS 1.17 (2) 1.33 2.5 1.46 MHz ms Notes: (1) RDSON is characterized at 500mA and tested at lower current in production. (2) This parameter is not tested in production. TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 8 of 20 Semtech Functional Description TS51224 is a fully-integrated wireless power receiver that can operate as a single-chip solution in proprietary applications. It can also operate in conjunction with a wireless charger controller or an application microcontroller to support the Qi, PMA or A4WP standards as well as proprietary standards up to 2W for 5V output and up to 5W for higher output voltages. Operating in conjunction with TS80002 as a wireless power transmitter and with a charging controller on the RX side, TS51224 can support bidirectional communication for data upload from the RX to the TX side. A TX to RX alert or reset function is also included so TS80002 can issue an interrupt or a reset signal to the RX MCU if the RX MCU becomes unresponsive. Rectifier TS51224 includes a high-efficiency rectifier to convert the input AC power signal to a DC output level for powering a high-efficiency step-down DC-DC converter and an integrated data modulator. The rectifier bridge is built to minimize power dissipation across load current of interest. The primary side of the bridge can stand-off up to 40V with AC input running at 6.78MHz. On the secondary side, a capacitive load on the PDC pin is used to filter the voltage signal on both sides of the bridge rectifier. The integrated data modulator and the external MCU communicate to the transmitter side using the capacitive modulation scheme. Integrated Modulator The integrated Data Modulator can be configured to operate in standalone or bypass mode. In standalone mode, the integrated modulator sends data messages to the TX side using a proprietary protocol to control the rectified voltage level on the PDC pin. In bypass mode, the external MCU controls the data packets to the TX side. For example, if the device is configured for standalone mode at power up, the system can receive power without external MCU support, and once PDC is high enough to operate the buck regulator and the MCU, the MCU can take over the communication with the transmitter by bypassing the integrated modulator. Modulator mode reverts back to the standalone mode when the MCU communication with the transmitter stalls. When the PDC output load current is low (buck regulator is off), an internal 10mA load is enabled to allow data communication to take place in optimal conditions. 40V Input Buck Regulator The integrated Buck regulator is a current-mode synchronous step-down power supply with integrated power switches, internal compensation, and fault protection. It is powered by the DC output of the Wireless power receiver bridge. The regulator is designed to handle a wide range of input and output voltages. The regulator is optimized for high efficiency power conversion with low RDSON integrated synchronous switches. Low power at light output loads is attained by the regulator automatic transitions between PFM and PWM modes. The regulator will automatically turn off when the RX AC power input is removed. Blocking FET An integrated low impedance FET in the TS51224 provides blocking from SYSOUT to FB. In cases where AC power is not applied, the battery is directly connected to SYSOUT. In this condition, the blocking FET is off, preventing conduction from SYSOUT to PDC. If AC power is applied and PDC is greater than the batter voltage, then the blocking FET will be on and the SMPS will regulate the SYSOUT voltage. Charger TS51224 includes a linear regulator to manage battery charging current. The charger operates by sensing the voltage drop across a sense resistor and regulating this to a DC value. Battery charging is controlled by the integrated state machine. When charging at a 1C rate, the SMPS will regulate SYSOUT to be sufficiently higher than VBAT to allow full charging currents. When the battery is very low (<3.3V), the SMPS will regulate SYSOUT to be equal to 3.3V and the charger will regulate the battery current to the 0.1C rate. TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 9 of 20 Semtech Device Power Up Timing Figure 3: Bypass Mode Power Up Figure 4: Standalone Mode Power Up TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 10 of 20 Semtech Operation Diagrams Figure 5: VAC Signal Loss & Buck Control Figure 6: Battery Charging State Diagram Figure 6: Battery Charging State Diagram TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 11 of 20 Semtech Detailed Ball Description BST - Bootstrap input This terminal provides the bootstrap voltage required for the high-side NMOS switch of the buck regulator. An external ceramic capacitor placed between the BST and SW pins will provide the necessary gate drive voltage for the high-side switch. In normal operation, the capacitor is re-charged on every low-side synchronous switching action. For the case where the switch mode approaches 100% duty cycle for the high-side FET, the buck regulator will automatically reduce the duty cycle to a minimum off time on every 8th cycle to allow the BST capacitor to re-charge. CHG_DIS - Charge disable signal This input terminal allows an external microcontroller to disable charging by pulling the pin high. COMM1, COMM2 - Modulation capacitor switches COMM1 and COMM2 pins are momentarily grounded when the system or the device communicates to the wireless power transmitter. When the COMM1/2 switches close, this shifts the impedance seen by the RX coil LIN and this shift is in turn reflected as a change in TX coil current that can be detected by the transmitter's demodulator. Depending on the MOD_CFG pin configuration and activity on the MOD_EN pin, the integrated modulator or the MOD_EN pin controls the COMM1/2 switches. EOC - End of charge indicator When charging, this pin will be pulled low by an integrated NMOS. When the battery is fully charged, the NMOS will release. An external resistor should be connected to a system rail to allow this voltage to pull to the rail. FB - Buck regulator output feedback This is the input terminal for the buck regulator output voltage feedback and the power input for the blocking FET. The SMPS will regulate the FB voltage at all times when enabled. FREQ - Frequency detector output This is an open drain output which outputs a clock reference running at the frequency of the input AC power signal divided by 8. GND - Ground Ground reference. This pin will conduct both correlated and uncorrelated switching currents during power transfer mode from the COMM1/2 pins switching and the buck operating in PWM mode, as well as switching current from the internal oscillator and the integrated modulator. PCB layout must provide low resistance to the ground plane for stable operation. ISP - Charging current sense node This terminal is the negative battery terminal. A sense resistor placed between ISP and ground will set the 1C charging current. The integrated charger will regulate the voltage on the ISP pin to set the charging current. TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 12 of 20 Semtech Detailed Ball Description MOD_CFG - Modulation configuration PDC voltage and modulation control scheme for communication are configured by the MOD_CFG pin. Bypass Mode When the MOD_CFG pin is grounded (voltage < 250mV), the internal data modulator is bypassed and the external MCU is required to drive the MOD_EN pin to control the communication with the power transmitter. Thus, the MCU must be fully active prior to the device generating a stable output voltage VOUT. The external MCU will set VPDC by sending data packets to the transmitter. Stand-alone Mode If the MOD_CFG pin is grounded through an external precision resistor (voltage > 250mV), the voltage on the MOD_CFG pin determines the nominal rectified voltage on the PDC pin. In this mode, the integrated modulator generates the wireless power control packets and drives the COMM1/2 switches after power-on reset. This mode is referred to as the stand-alone mode as it does not require an external MCU to control the communication with the transmitter during receiver power up and for normal operation. While in stand-alone mode, the device also monitors the MOD_EN pin to detect if the external MCU wants to take control of the communication with the power transmitter. If at least 8 pulses with a delay of less than 25ms between each pulse are detected on the MOD_EN pin, the device enters the (integrated modulator) bypass mode. Once in bypass mode and the MOD_EN pin activity stalls (less than 8 pulses in a 250 ms window), the device exits the bypass mode and returns to stand-alone mode and the integrated modulator resumes communication with the power transmitter. MOD_CFG Pin Connection Grounded Resistor RMOD_CFG to Ground RX Data Communication Modulator External MCU Integrated modulator COMM1/2 Pin Drive VPDC Internal Modulator Bypass Internal Modulator Fallback MOD_EN Set by External MCU's power control data packet Integrated modulator always bypassed Integrated modulator always bypassed RMOD_CFG / 5000 If MOD_EN pin pulses 8 times with delay < 25ms between pulses, COMM1/2 pins responsive to MOD_EN input If MOD_EN pin pulses less than 8 times within 250ms window, COMM1/2 pins responsive to the integrated modulator Integrated modulator MOD_EN - MCU modulation input This is an active high CMOS input to drive the COMM1 and COMM2 pins to modulate the coil current to communicate with the wireless power transmitter. MOD_EN signal is generated by the external MCU and its output swing must conform to the input levels specified in the Electrical Characteristics section for the MOD_EN pin. Activity on the MOD_EN is also sampled by the control logic to transition between Stand-alone and Bypass modes as outlined in the MOD_CFG pin description. nALERT - MCU reset/interrupt nALERT is an open drain output which is asserted low when the transmitter sends an ALERT command to the receiver to reset the MCU or to generate an interrupt. During the power up sequence, nALERT pin is pulled high by the external pull-up resistor, thus only the power transmitter ALERT command is allowed to assert this pin low. TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 13 of 20 Semtech Detailed Ball Description PDC - Rectified input signal This terminal is the rectified output of the RX AC input voltage and serves as the DC supply for the device. It is recommended that a 10F bypass capacitor rated for the maximum PDC voltage (> 2.2F capacitance accounting for voltage derating, aging, and tolerance) be placed close to the device for best performance. Since this is the main power supply for the IC, good layout practices need to be followed for this connection. SW - Switching output This is the switching node of the buck regulator. It should be connected directly to the output filter inductor LOUT and bootstrap capacitor with a short, wide trace. SW pin switches between VPDC and GND at the switching frequency, thus it is considered a noise source on the PCB. Route high impedance and quiet traces away from the SW trace. SYSOUT - System output supply This terminal is the system power supply. When AC input power is not available, SYSOUT is shorted to VBAT through the integrated charger FET. When AC power is applied, SYSOUT will be regulated to either 3.3V when the battery is low or ~150mV above battery up to the topoff voltage. THERM - Thermistor connection This terminal allows temperature monitoring of the external system using a thermistor. When the system temperature reaches the warning level, the 1C charging level will be cut in half. At the shutdown level, charging will stop. TOP_SET - Topoff voltage setpoint The battery topoff voltage is set by placing a resistor to ground on this pin. The IC will provide a 20A DC output current. The topoff voltage will be set according to the following equation. VTOP = VTOP_OFFSET + ITOP * (RTOP_SET / 10) VAC1, VAC2 - AC Power input from resonant LC network These terminals are connected to the wireless power supply receiver coil and resonant capacitor. It is recommended that the PCB traces are robust to handle high peak currents during power up maximum power transfer. VBAT - Battery connection This pin is the positive battery terminal. The charger will supply output current to this pin during charging. TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 14 of 20 Semtech Regulator Internal Protection Details Regulator Output Current Limit The current through the high-side FET is sensed on a cycle by cycle basis and if current limit is reached, it will turn off the high-side FET in mid-cycle. In addition, the device senses the FB pin to identify hard short conditions and will direct the SW output to skip 4 cycles if current limit occurs when FB is low. This allows current built up in the inductor during the minimum on-time to decay sufficiently. Current limit is always active when the regulator is enabled and the soft start function ensures current limit does not prevent regulator startup. Under extended over-current conditions (such as a short), the buck regulator switching will automatically be disabled. Once the over current condition is removed, the device automatically returns to normal operation. Thermal Shutdown If the die temperature exceeds TSD, SW outputs will tri-state to protect the device and its load from damage. Once the device cools to TSD - TSD_HYST, the buck regulator will attempt to start up again. Reference Soft Start Internal references are ramped to prevent the output from overshoot during initial startup. During the soft start ramp, current limit is still active, and protects the device in case of a shorted output. Output Overvoltage If the output of the regulator exceeds 3% of the set regulation voltage, the SW output tri-states to protect the device from damage. This check occurs at the start of each switching cycle. If overvoltage occurs mid-cycle, the switching for that cycle completes and the SW output tri-states on the next cycle. PDC Under-Voltage Lockout Buck regulator is off until PDC is over 4V with 300mV hysteresis. TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 15 of 20 Semtech Application Schematics L1 PDC 4.7uH C2 10nF 25V VAC1 A1 4.7nF 50V AC1 RX COIL C9 22uF 10V U1 C4 E1 AC2 VAC2 C6 4.7nF 50V C7 4.7nF 50V A3 E3 C4 B4 D3 B3 D4 E4 VAC1 VAC2 COMM1 COMM2 EOC CHG_DIS FREQ ALERT MOD_EN MOD_CFG PDC PDC PDC PDC BST SW SW FB SYSOUT THERM TOP_SET VBAT ISP GND GND A2 B2 D2 E2 A4 C1 C2 A5 B5 C3 E5 C5 D5 B1 D1 GND C5 GND 47nF J2 R8 50K R9 100K SYSOUT THERM C20 2.2uF 10V 1 2 3 SYSOUT&THERM C8 2.2uF 10V R7 0.25 TS51224 C10 22uF 10V P1 GND GND GND 8 7 6 5 4 3 2 1 EOC CHG_DIS FREQ ALERT MOD_EN MOD_CFG GND J1 1 2 + - Out BATTERY R5 60K Header 8 GND GND Figure 7: Minimal PCB Area Configuration (VPDC=12V, VOUT=5V, IOUT=50mA) L1 PDC C1 C2 22uF 25V NP VAC1 A1 4.7nF 50V AC1 E1 AC2 VAC2 C6 4.7nF 50V SYSOUT R6 10K PDC R2 75K R4 4.7K C9 22uF 10V U1 C4 RX COIL 4.7uH C3 100nF 25V A3 E3 C4 B4 D3 B3 D4 E4 LED1 GREEN C12 47nF C7 4.7nF 50V VAC1 VAC2 COMM1 COMM2 EOC CHG_DIS FREQ ALERT MOD_EN MOD_CFG PDC PDC PDC PDC BST SW SW FB SYSOUT THERM TOP_SET VBAT ISP GND GND A2 B2 D2 E2 A4 C1 C2 A5 B5 C3 E5 C5 D5 B1 D1 GND GND 47nF J2 R8 50K R7 R9 100K GND GND SYSOUT THERM C20 2.2uF 10V 1 2 3 SYSOUT&THERM C8 2.2uF 10V GND GND EOC CHG_DIS FREQ ALERT MOD_EN MOD_CFG C13 22uF 10V GND P1 8 7 6 5 4 3 2 1 C11 22uF 10V C5 0.25 TS51224 C10 22uF 10V GND GND GND J1 1 2 + - Out BATTERY R5 60K Header 8 GND GND Figure 8: Standard Configuration (VPDC=12V, VOUT=5V, IOUT=100-500mA) TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 16 of 20 Semtech Package Information 2.300.03 A B INDEX AREA A1 CORNER 2.300.03 0.200.03 0.10 C 0.5250.05 SEATING PLANE C 0.08 C 1.60 0.40 E D 1.60 C 0.40 B A 1 2 3 4 5 NOTES: Ball Diameter 25X O 0.260.03 0.05 C A B 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS Figure 9: Package Outline Drawing TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 17 of 20 Semtech Package Information Figure 10: Device Symbolization 1.60 0.40 0.40 1.60 25X O 0.210 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS 2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Figure 11: Recommended Board Layout Land Pattern TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 18 of 20 Semtech Ordering Information Device Part Number TS51224-M000WCSR TS51224 Final Datasheet June 19, 2017 Rev. 1.0 Description Wireless Power Receiver, external resistor feedback www.semtech.com 25 Ball WCSP Package (5x5 ball array, 0.4mm ball pitch) Tape & Reel (3000 parts/reel) 19 of 20 Semtech IMPORTANT NOTICE Information relating to this product and the application or design described herein is believed to be reliable, however such information is provided as a guide only and Semtech assumes no liability for any errors in this document, or for the application or design described herein. Semtech reserves the right to make changes to the product or this document at any time without notice. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. Semtech warrants performance of its products to the specifications applicable at the time of sale, and all sales are made in accordance with Semtech's standard terms and conditions of sale. SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS, OR IN NUCLEAR APPLICATIONS IN WHICH THE FAILURE COULD BE REASONABLY EXPECTED TO RESULT IN PERSONAL INJURY, LOSS OF LIFE OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER'S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. The Semtech name and logo are registered trademarks of the Semtech Corporation. All other trademarks and trade names mentioned may be marks and names of Semtech or their respective companies. Semtech reserves the right to make changes to, or discontinue any products described in this document without further notice. Semtech makes no warranty, representation or guarantee, express or implied, regarding the suitability of its products for any particular purpose. All rights reserved. (c) Semtech 2017 Contact Information Semtech Corporation 200 Flynn Road, Camarillo, CA 93012 Phone: (805) 498-2111, Fax: (805) 498-3804 www.semtech.com TS51224 Final Datasheet June 19, 2017 Rev. 1.0 www.semtech.com 20 of 20 Semtech