Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A http://www.semicon.panasonic.co.jp/en/ INTEGRATED WIRELESS POWER SUPPLY RECEIVER, Qi (WIRELESS POWER CONSORTIUM) COMPLIANT AN32258A FEATURES DESCRIPTION Integrated Wireless Power Receiver Solution WPC Ver. 1.1 Compliant Synchronous Full Bridge Rectifier Control Input Voltage Range : VRECT = 4.4 V to 19 V Output Voltage: 5 V Temperature Detecting Circuit Full Charge Detection with Adjustable Current Level Switching Control of External Power Supply Supports Under Voltage Lockout , Thermal Shutdown, Over Voltage Detection, and Over Current Detection. LED Indicator 3.16 mm X 3.16 mm WLCSP 48 Pins with 0.4mm pitch AN32258A is a wireless power system controller IC which is compliant with Qi version 1.1 of the System Description Wireless Power Transfer, Volume 1 for Low Power defined by Wireless Power Consortium. AN32258A is a controller IC of a power receiver (Rx) which can be used with any Qi-compliant wireless chargers. APPLICATIONS WPC Compliant Receivers Cell Phones, Smartphones Headsets Digital Cameras Tablet Devices Portable Media Players etc. IMPORTANT AN32258A is designed to be used based on the circuits and external components described in this document and Application Note. Therefore, Panasonic cannot support any inquiries of modified solution. Wireless Power System Wireless Power VIN Cp Cs Cd TX Coil RX Coil Transmitter (Tx) OUT Co Rectifier NN32251 Tx Inverter VRECT Control IOUT Charger + AN32258 Receiver (Rx) Communication Page 1 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A FEATURES CONTENTS ................................................................................. 1 DESCRIPTION ................................................................................. 1 APPLICATIONS ................................................................................. 1 ABSOLUTE MAXIMUM RATINGS ............................................................... 3 POWER DISSIPATION RATING .................................................................. 4 RECOMMENDED OPERATING CONDITIONS ............................................. 4 ELECTRICAL CHARACTERISTICS ............................................................ 5 PIN CONFIGURATION .............................................................................. 8 PIN FUNCTIONS ................................................................................. 9 CIRCUIT DIAGRAM .................................................................................14 FUNCTIONS .................................................................................15 PACKAGE INFORMATION ........................................................................29 IMPORTANT NOTICE ..............................................................................30 Page 2 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A DELIVERY INFORMATION Order Number Package Output Supply Minimum Quantity AN32258A-PR 48 pin WLCSP(3.2x3.2mm Embossed Taping 5000pcs ABSOLUTE MAXIMUM RATINGS Parameter Symbol Rating Unit Notes VRECT 20 V *1 VEXT 6.9 V *1 Output current IRECT -- A *1 Operating ambient temperature Topr - 30 to + 85 C *2 Operating junction temperature Tj -40 to +125 C *2 Tstg - 50 to + 125 C *2 VTD2, VTD1, VSC2, VSC1, VISENSE1 - 0.3 to 20 V *1 VOUT, VLED - 0.3 to 12 V *1 VVTH, VFCCNT, VFODG, VFULLCH, VFOD, VFODL - 0.3 to (VVREG34V + 0.3) V *1 VVPGATE - 0.3 to (VRECT + 0.3) V *1 VDT1H - 0.3 to(Vsc1 + VVREG47V+ 0.3) V *1 VDT2H - 0.3 to(Vsc2 + VVREG47V+ 0.3) V *1 VDT2L, VDT1L - 0.3 to ( VVREG47V + 0.3 ) V *1 VEXTCNT - 0.3 to ( VEXT + 0.3 ) V *1 VMEMBAT - 0.3 to (VVREG34V + 0.3) V *1 TD2 1.0 kV -- HBM (Human Body Model) ISENSE1, ISENSE2, ISENSE1-S, ISENSE1-S1 1.5 kV -- HBM (Human Body Model) Except for pins above 2 kV -- Supply voltage Storage temperature Input voltage range Output voltage range ESD Note) This product may sustain permanent damage if the actual condition is higher than the absolute maximum rating stated above. This rating is the maximum stress, and device will not be guaranteed to operate in case it is higher than our stated range. When exposed to the absolute maximum rating for a long time, the reliability of the product may be affected. *1:The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2:Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25 C. Page 3 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A POWER DISSIPATION RATING PACKAGE j-a j-C PD (Ta = 25 C) PD (Ta = 85 C) Notes Wafer Level Chip Size Package (WLCSP type) 631.4 C / W 7.2 C /W 0.158 W 0.0632 W *1 Note). *1 :For the actual usage, please refer to the PD-Ta characteristics diagram in the package specification, and follow the power supply voltage, load and ambient temperature conditions to ensure that there is enough margin and the thermal design does not exceed the allowable value. CAUTION Although this device has limited built-in ESD protection circuit, permanent damage may occur on it. Therefore, proper ESD precautions are recommended to avoid electrostatic damage to the MOS gates RECOMMENDED OPERATING CONDITIONS Parameter Supply voltage range Input voltage range Pin Name Min. Typ. Max. Unit VRECT 4.4 8 19 V VEXT 4.4 5 6 V VISENSE1 4.4 8 19 V VTD2 -0.3 -- 20 V VTD1 -0.3 -- 20 V VSC2 -0.3 -- 20 V VSC1 -0.3 -- 20 V VOUT -0.3 -- 7 V VLED -0.3 -- 7 V VVTH -0.3 -- VVREG34V + 0.3 V VFCCNT -0.3 -- VVREG34V + 0.3 V VFODG -0.3 -- VVREG34V + 0.3 V VFULLCH -0.3 -- VVREG34V + 0.3 V VFOD -0.3 -- VVREG34V + 0.3 V Notes *2 Note) Do not apply external currents or voltages to any pin not specifically mentioned. *2 : The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. Page 4 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A ELECRTRICAL CHARACTERISTICS Co = 10 F, VRECT = 8 V, Ta = 25 C 2 C unless otherwise noted. Parameter Symbol Condition Limits Unit Note Min Typ Max 10 12 14 mA Current Consumption Quiescent current ISTBY Under-voltage lock-out (UVLO) VUVLO VRECT : 0V -> 5V 3.29 3.5 3.71 V VUVLOHY VRECT : 5V -> 3V - 0.7 - V VOVP VRECT : 5V -> 19V 17 18 19 V VOVPOHY VRECT : 19V -> 5V - 4 - V *1 VRECTTH1 In increasing IOUT < 125mA In decreasing I IOUT <60mA - 8 - V *1 VRECT Threshold2 VRECTTH2 In increasing 125mA<IOUT<420mA In decreasing 60mA<IOUT<360mA - 5.4 - V *1 VRECT Threshold3 VRECTTH3 In increasing IOUT > 420mA In decreasing IOUT > 360mA - 5.1 - V *1 Under-voltage lock-out Hysteresis on UVLO *1 Over-voltage protection (OVP) Input overvoltage threshold Hysteresis on OVP VRECT (5W, LDO 5V mode ) VRECT Threshold1 OUTPUT VOUT1 VRECT=8V ,IOUT=10mA 4.76 5 5.24 V VOUT2 VRECT=5.1V , IOUT=1000mA 4.76 -- -- V VOUT (5W, LDO 5V mode ) Note) *1 : Designed typical values Page 5 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A ELECRTRICAL CHARACTERISTICS (Continued) Co = 10 F, VRECT = 8 V, Ta = 25 C 2 C unless otherwise noted. Parameter Symbol Condition Limits Min Typ Max Unit Note Temperature Detection [ThermistorERTJ0EV104F] VTH 60 C detection VTHR47 kohm (1%) 0.887 0.975 1.069 V VOCPL -- 1.25 1.5 1.75 A Tj -- -- 150 -- C *1 Tjhys -- -- 20 -- C *1 VEXT Rising threshold voltage VEXTTH -- 3.99 4.2 4.41 V VEXT hysteresis VEXTHY -- -- 0.4 -- V High input threshold (Termination) VIH1 -- 1.6 -- -- V Low input threshold VIL1 -- -0.2 -- 0.2 V High input threshold (Termination) VIH1 -- 1.6 -- -- V Low input threshold VIL1 -- -0.2 -- 0.2 V Over-temperature Detection Voltage Over-current protection (OCP) Over-current threshold voltage 1 Thermal protection Thermal shutdown temperature Thermal shutdown hysteresis External voltage detection *1 Terminal voltage (FULLCH) Terminal voltage (FODL) Notes) *1 : Designed typical values Page 6 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A ELECRTRICAL CHARACTERISTICS (Continued) Co = 10 F, VRECT = 8 V, Ta = 25 C 2 C unless otherwise noted. Limits Parameter Symbol Condition LED Saturation voltage LEDSAT LED Leak current LEDLEAK Ma Unit Note x Min Typ ILED = 20mA -- -- 0.5 V -- LED = 7.5V -- -- 10 A -- LEDCNT Page 7 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A Pin Layout Top View A TEST2 GND PGA TE OUT TD2 TD1 DT2L B GND EXT CNT EXT SCL SDA DET IN DT1L C ISEN SE2 VTH VREG 34V_S EXT CLK FCC NT FODG SC2 D ISEN SE_S MEM BAT TEST1 SC2_S VREG 47V_S VIO SC1 ISEN SE_S1 SEL VER GND FULL CH FOD DT2H FODL EN I2C DT1H E F ISEN SE1 OUT HP SEL HP SEL OSR G VRE CT SEL HV VREG 34V LED VREG 47V BT1 BT2 1 2 3 4 5 6 7 Page 8 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A PIN FUNCTIONS Pin A1 Name TEST2 A2,B1, GND E4 I/O Function I Test pin GND Ground Description Connect to GND. Panasonic uses this pin for test purposes only. A3 PGATE O LDO control Controls the PMOS gate of the LDO A4 OUT I LDO feedback Connects to the PMOS drain of the LDO A5 TD2 O Drive load to transmit 2 Controls capacitive load modulation for Qi data A6 TD1 O Drive load to transmit 1 Controls capacitive load modulation for Qi data A7 DT2L O Rectification low side switch gate control 2 Controls the switching gate of the low side of the rectifier External PMOS control Controls the switch to an external power supply. This pin is internally connected to the drain of NMOS to use under 2mA. When EXT is larger than 4.2V, EXTCNT will become low and the external MOSFET will turn on. B2 EXTCNT O Power External power detection Supply Supplies power externally in direct. When EXT becomes larger than 4.2V, EXTCNT will become low and the wireless power transmission will stop. The external power supply will then directly output, and the Tx will be stopped. (Refer to the circuit diagram followed by Pin Functions.) B3 EXT B4 SCL I Test pin Leave this pin open. Panasonic uses this pin for test purposes only. B5 SDA I/O Test pin Leave this pin open. Panasonic uses this pin for test purposes only. B6 DETIN I Test pin Leave this pin open. Panasonic uses this pin for test purposes only. Page 9 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A PIN FUNCTIONS (Continued) Pin Name I/O Function Description B7 DT1L O Rectification Low side Switch Gate Control Controls the switching gate of the low 1 side of the rectifier C1 ISENSE2 I Current sensor 2 Detects the output current from LDO. Connect this pin to ISENSE1-S1(E2). C2 VTH I Thermistor voltage Connect to a thermistor placed where temperature needs to be measured to prevent over heat. Connect to VREEG34V (G3) if themistors are not in use. C3 VREG34V_S O Internal regulator sense output This pin is shorted internally to VREG34V(G3). C4 EXTCLK I Test pin Leave this pin open. Panasonic uses this pin for test purposes only. Full charge control Connect a pull-down resistor to set an automatic full-charge detecting current. For example, when a resistor of 100kohm is used, decreasing output current to less than 80mA will shutdown the LDO, and also data is sent to Tx to stop power transmission. The current detection starts 5 seconds after power transmission starts. Using this pin can also replace the full-charge control from FULLCHE5. C5 FCCNT I Page 10 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A PIN FUNCTIONS (Continued) Pin Name I/O Function Description C6 FODG I FOD gain control Connect a pull-down resistor to adjust the gain level of Received Power Packet defined in WPC specification. The resistance can be varied from 10k ohms to 180k ohms. C7 SC2 I Synchronous rectifier control 2 Connect to the rectifier to detect its voltage level. D1 ISENSE1_S I Sense pin for ISENSE1 Connect to the source of the LDO's MOSFET to detect the output current. A sense resistor of 50mohms is connected to ISENSE1(F1) inside the IC. D2 MEMBAT O Random number memory adjustment Connect a capacitor of 1uF to fix a memory time. D3 TEST1 O Test pin Leave this pin open. Panasonic uses this pin for test purposes only. D4 SC2_S I Synchronous rectifier sense pin Leave this pin open. Panasonic uses this pin to sense SC2(C7) for test purposes only. D5 VREG47V_S O Internal regulator sense output This pin in shorted internally to VREG47V(G5). D6 VIO I Test pin Leave this pin open. Panasonic uses this pin for test purposes only. D7 SC1 I Synchronous rectifier control 1 Connect to the rectifier to detect its voltage level. E2 ISENSE1_S1 I Sense pin 1 for ISENSE1 Connect to ISENSE2(C1) to detect the output current. Refer to the circuit diagram followed by Pin Functions. E3 SELVER I Test pin Leave this pin open. Panasonic uses this pin for test purposes only. Page 11 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A PIN FUNCTIONS (Continued) Pin E5 Name FULLCH I/O I Function Description Full charge detection This input controls the full charge detection externally such as from an MCU. When a high voltage level (over 1.6V) is inputted for over 50us, AN32258A will recognize it as fullcharge and send packets to Tx to stop the power transmission. Right after the input becomes low, the power transmission can restart. E6 FOD O Foreign object detection offset Connect a pull-down resistor to adjust the offset level of received power of WPC specification. For example, a pull-down resistor of 100kohm will set the offset to be zero. Refer to No.3 of the Functions section. E7 DT2H O Rectification high side switch gate control 2 Controls the switching gate of the high side of the rectifier F1 ISENSE1 I Current sensor 1 Connect to VRECT(G1) to detect the output current. A sense resistor of 50mohms is connected to ISENSE1S(D1) inside the IC. F2 OUTHP O TEST pin Leave this pin open. Panasonic uses this pin for test purposes only. F3 SELHP I TEST pin Connect to GND. Panasonic uses this pin for test purposes only. F4 SELOSR I TEST pin Connect to GND. Panasonic uses this pin for test purposes only. Page 12 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A PIN FUNCTIONS (Continued) Pin Name I/O Function Description F5 FODL I Foreign object detection offset for low current Inputting a logical high level ( over 1.6V ) will introduce an offset to Received Power Packet when IOUT is small. When GND is inputted, no offset will be added. F6 ENI2C O Test pin Leave this pin open. Panasonic uses this pin for test purposes only. F7 DT1H O Rectification high side switch gate control 1 Controls the switching gate of high side of the rectifier G1 VRECT G2 SELHV I Test pin Leave this pin open. Panasonic uses this pin for test purposes only. G3 VREG34V O Internal regulator output Outputs a voltage level of 3.4V. G4 LED O LED control This pin is internally connected to the drain of NMOS which turns on when the LDO outputs a voltage. G5 VREG47V O Internal regulator output Outputs a voltage level of 4.7V. G6 BT1 O Boot strap 1 Connect to the rectifier G7 BT2 O Boot strap 2 Connect to the rectifier Power Voltage of rectifier Supply Voltage of the rectifier output becomes the power supply of AN32258A. Page 13 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A CIRCUIT DIAGRAM MTM68411 1 M 1 uF 1 uF A5 TEST1 EXTCNT 560 A1 D3 TEST2 B2 EXT B3 D2 MEMBAT FODL C4 EXTCLK A6 TD1 To Logic F5 OVPDET G4 LED CNT VINDET EXTDET G1 TD2 D4 FC8V33030L SC2_S DT1H F7 33nF E7 Synchronous Rectifier Control 680 pF SC1 SC2 C7 D7 1000 pF B7 FOD ILIM FCCNT VTH SELHV DT2H 33nF ISENSE2 MTM23123 A3 LDO OSC A4 To ADC C6 To ADC C5 DETIN AN32258A FCCNT From Logic F2 To Logic F3 OUT4.7 uF 82k(1%) 56k(1%) Charge IC VREG34V OUTHP 1 uF C3 B4 B5 D6 F4 G2 E3 E5 FULLCH F6 SELVER To Logic G3 SELHV VREG34V To ADC C2 To Logic G5 To ADC D5 VTH VREG 47V_S Regulator SELHP GND2 A2 GND1 E4 GND B1 To Logic B6 E6 FODG Regulator L1:WR464650-12K5-P2 To ADC FOD SELOSR G7 VREGDET BT1 BT2 ENI2CN G6 From Logic A7 SCL SDA VIO FC8V33030L DT2L ISENSE1-S1 E2 C1 BGR 0.1 uF 0.1uF VRECT ISENSE1 F1 Co=10 uF ISENSE1-S D1 PGATE LOGIC DT1L VREG 47V L1 Current DET ADC VREG34V_S 68nF 68nF 68nF LED 47 k 1 uF ERTJ0EV104F Page 14 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A FUNCTIONS AN32258A has the following functions. No. Function 1 Full charge control 2 Over current control 3 Foreign object detection 4 Over temperature detection 5 Rectifier voltage control 6 LED display 7 External voltage supply switch 1. Full Charge Control AN32258A has two ways to detect full-charge. 1-1. Switch ON/OFF externally : FULLCH (Pin E5) AN32258A recognizes an input of high level to FULLCH as full-charge detected and an input of low level as full-charge not detected. When full-charge is detected, a Qi protocol of End Power Transfer Packet will be sent to Tx. The Tx will then stop the power transmission, and the output of AN32258A will shutdown. Keep the high level to FULLCH for longer than 50s for full-charge detection. Change it to low level to restart charging. When this function with FULLCH is not needed, connect the pin to GND. *Time to resume power transmission depends on the Tx. When NN32251A is used, it will take 15 minutes to restart power transmission after full-charge is detected. Notice that the charge may start and stop repeatedly, if the Tx does not have sufficient time to resume power transmission. Control error packet Control error packet End power transfer packet 160ms Communication Signal IOUT "H" "L" 5V OUT 0V Figure A-1. Full Charge Detection by FULLCH Page 15 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A FUNCTIONS (Continued) 1-2. Control by output current FCCNT (Pin C5) When charging current becomes less than the value set at FCCNT (Pin C5), the power transmission stops as full charge. The threshold is determined by a pull-down resistor connected at this pin. For example, when a resistor of 100kohm is used, decreasing output current to less than 80mA will shutdown the LDO, and also data is sent to Tx to stop power transmission. The data to transmit is defined in Qi and called End Power Transfer packet. The current detection starts 5 seconds after power transmission starts. Connect this pin to VREG34V, when this full-charge detection is not needed. When FULLCH pin is connected to high level to be activated, FCCNT will not control the full-charge detection. This function does not work for FCCNT voltage of over 3V. Also, note that the minimum threshold is 40mA. *Time to resume power transmission depends on the Tx. When NN32251A is used, it will take 15 minutes to restart power transmission after full-charge is detected. Notice that the charge may start and stop repeatedly, if the Tx does not have sufficient time to resume power transmission. Control error packet Control error packet Control error packet End power transfer packet 160ms Communication Signal IOUT 5V 160ms Detected at the timing of a control error packet by an AD converter Full-charge current OUT 0V Full-charge Current [mA] Figure A-2. Full Charge Detection by FCCNT 588 80 100 (0.136) 735 (1.0) resistance [kohm] (>3V) (FCCNT [V]) FigureA-3. Full charge detecting current is controlled by a resistor connected to FCCNT. Full-charge Current [mA] = 2000/3.4 x 0.00000136 x R[] Page 16 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A FUNCTIONS (Continued) 2.Current Limit Control . When the output current exceeds the threshold value, AN32258A will shutdown the output. When this over-current is detected, data is sent to Tx to stop power transmission. The data to transmit to Tx is End Power Transfer packet defined in Qi, and right after the Tx receives the data, it stops its power transmission. The threshold value is about 1.5A. Control error packet Control error packet End power transfer packet 160ms Communication Signal IOUT 1.5A 5V OUT 0V Figure A-4. Timing characteristics for current limit control 3.Foreign Object Detection AN32258A has a foreign object detection complying with the WPC 1.1 specification. The specification defines a foreign object when the difference between transmitted power and received power is large. The Tx measures the power difference and stops power transmission when the difference is large. The value of Received Power (address 04h) can be adjusted by the following three pins. FOD offset [mW] 3-1. Offset Control FOD (Pin E6) Connect a pull-down resistor at FOD pin to adjust the offset level of received power sent to the Tx. For example, a pull-down resistor of 100kohm will set the offset to be zero. This function does not work for FOD voltage of over 3V. If this function is not needed, connect the FOD pin to VREG34V. +400 0 -400 35.3 (0.6) 100 (1.7) Resistance Value [kohm] 165 (FOD [V]) (2.8) (>3V) Figure A-5. FOD offset is controlled by a resistor connected to FOD pin Page 17 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A FUNCTIONS (Continued) 3.Foreign Object Detection (Continued) 3-2. Offset Control for low current FOD (Pin F5) An offset can be introduced to the received power for low current at IOUT. Set the FODL pin to either logical high or low. Low (GND) No offset High (over 1.6V) Offset added (IOUT < ~125mA) 3-3. Gain control FODG (Pin C6) The gain of received power can be adjusted by a pull-down resistor connected at this pin. The resistance can be Gain (relative to 33 k) varied from 10k ohms to 180k ohms as the following figure shows. 1.9 1.7 1.5 1.3 1.1 1.0 0.9 0.7 0.5 0 33 50 100 150 Resistance [k] 200 Figure A-5-1. The relationship between received power gain and pull-down resistance at FODG 4. Over Temperature Detection VTH (Pin C2) A thermistor, ERTJ0EV104F recommended, can be connected to VTH pin. Connecting a resistor from VTH to VREG34V will fix the threshold temperature. For example, a 47k resistor yields a threshold of 60 C. Refer to TYPICAL CHARACTERISTICS section for more detail. Connect to VREEG34V (G3) if themistors are not in use. Page 18 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A FUNCTIONS (Continued) 5. Rectifier Voltage Control AN32258A controls the rectifier output (VRECT) depending on the current value (IOUT). The following figure shows the change of VRECT due to IOUT. Note that the changed timing in increasing IOUT is different from that in decreasing IOUT. 1000mA IOUT VRECT 420mA 0mA 380mA 125mA 60mA 0mA 8V 8V 5.4 V 5.4 V 5.1 V Figure A-8. VRECT changes by the value of output current. (Values shown are for reference.) Page 19 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A FUNCTIONS (Continued) 6. LED Display LED (Pin G4) AN32258A has LED driver. Connect an LED and a resistor in series from OUT to LED pins. The LED turns on and off as the following figure shows. Table A-1. LED Display Status Display LED Standby OFF Charging ON Full-charge detected OFF External power supply detected OFF Over-current detected OFF Over-temperature detected OFF 7. External Voltage Supply Switch EXT ( Pin B3 )EXTCNT (Pin B2) The voltage supply to a charger can be switched from AN32258A to some external voltage supply, such as USB. For this function to work, introduce an external voltage to EXT pin. When EXT becomes larger than 4.2V, the external MOSFET switch will turn on to output the external voltage in direct. Also, End Power Transfer Packet is sent to Tx to stop power transmission at the same time. If the external voltage supply becomes lower than 3.8V, the external MOSFET switch will turn off. Then, Tx will resume power transmission, and AN32258A will start to output at the LDO. Refer to the circuit diagram before FUNCTIONS section for the configuration at EXT pin. Page 20 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A EVALUATION RESULTS Evaluation Circuit Diagram Conditions : EXT (B3) 5V input FCCNT (C5)Pulled down with a 100kresistor for section 3, and connected to REG34V for other evaluations. FULLCH (E5) Voltage swept for section 3, and connected to GND for other evaluations. Coil (L1): 13.94H (TDK: WR464650-12K5-P2) Charger: NN32251AA_EVM(A11) (except section 12) MTM68411 1M SC1 SC2 FC8V33030L TEST2 OUTHP SELHP FODL TEST1 EXTCNT EXT OUT IC1 AN32258A 560 LED VRECT ISENSE1 ISENSE1-S ISENSE1-S1 ISENSE2 PGATE OUT D1 VRECT 10uF MTM23123 IOUT VOUT 4.7uF FODG FCCNT FULLCH SDA VIO SCL ENI2CN FOD MEMBAT DT2L BT1 BT2 DETIN VREG34V VREG34V_S DT1L VTH 13.94uH 0.1uF 1000pF DT2H 0.1uF 68nF 680pF 68nF 68nF EXTCLK FC8V33030L TD1 TD2 SC2_S DT1H SELHV SELOSR SELVER GND GND1 GND2 VREG47V VREG47V_S 33nF 33nF 1uF 82k 56k Charge IC VREG34V 1uF 47k 1uF ERTJ0EV104F 1uF Figure B-1. AN32258A Evaluation Circuit Page 21 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A TYPICAL CHARACTERISTICS (Continued) 2. VRECT Voltage Characteristics VOUT [V] VRECTV] 1.Output Voltage Characteristics IOUT [A] IOUT [A] Figure B-3 VRECT Voltage vs Output Current Figure B-2 Output Voltage vs Output Current 3. Full-Charge Characteristics 1.6 6 1.4 5 1 VOUT [V] IOUT [A] 1.2 0.8 0.6 4 3 2 0.4 1 0.2 0 0 0 0.5 1 1.5 2 2.5 3 0 0.2 0.4 0.6 FCCNT [V] Figure B-4 Full-Charge Detecting Current vs FCCNT Voltage with a 100kResistor Connected 1 FULLCH [V] Figure B-5 Output Voltage vs FULLCH Level OUT OUT 0.8 TD1 VRE VRECT C T TD Figure B-6 Received Signal Characteristics after a Full-Charge Detection *After the output voltage becomes zero, an End Power Transfer Packet is sent. Page 22 of 30 Established : 2014-10-22 Revised : ####-##-## 1 Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A TYPICAL CHARACTERISTICS (Continued) VOUT [V] 4. Over Current Protection Characteristics IOUT [A] Figure B-7 VOUT vs IOUT 5. Temperature Detection Characteristics 6 VRECT VOUT [V] 5 4 OUT 3 TD1 2 1 0 0 0.5 1 1.5 2 2.5 VTH [V] Figure B-8 Output Voltage vs VTH Figure B-9 Received Signal Characteristics after a Temperature Detection *Conditions IOUT =500mA The power transmission from Tx stops due to temperature detection (VTH). Page 23 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A TYPICAL CHARACTERISTICS (Continued) 6. Over Voltage Protection Characteristics 6 VOUT [V] 5 4 VRECT 3 2 1 OUT 0 5 7 9 11 13 15 17 19 21 VRECT [V] Figure B-10 VOUT vs VRECT by OVP 18V VRECT 14V OUT Figure B-11 Output Voltage Response by OVP 7. Foreign Object Detection Characteristics 8 Iout=0.1A Received Power [W] 7 Iout=0.2A 6 Iout=0.3A 5 Iout=0.4A Iout=0.5A 4 Iout=0.6A 3 Iout=0.7A 2 Iout=0.8A Iout=0.9A 1 Iout=1.0A 0 0 1 2 3 FOD [V] Figure B-12 Received Power vs FOD Voltage *Received Power = (RPWR[7:0] / 128) x (Maximum Power / 2) x10Power Class W Page 24 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A TYPICAL CHARACTERISTICS (Continued) 8. External Power Supply Switch Characteristics EXT=5V OFF VRECT VRECT OUT OUT EXT EXT EXTCNT EXTCNT EXT=5V Figure B-13 Voltage when an External Power is Inputted during Normal Wireless Power Transmission *Condition : IOUT=500mA Figure B-14 Normal Power Transmission Resumes after the External Power Turns Off. *Condition : IOUT=500mA 9. Start-up Characteristics VRECT OUT IOUT Figure B-15 Characteristics of Starting Wireless Power Transmission *Condition : IOUT=1000mA 10. Communication Packet Configuration PREAMBLE STRAT HEADER 00100000 MESSAGE CHECKSUM PARITY STOP Figure B-16 Rx Communication Packet Structure Page 25 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A TYPICAL CHARACTERISTICS (Continued) 11. LED Display Characteristics VRECT VRECT OUT VREG34V OUT LED LED LED-pin Low Figure B-17 LED Characteristics 1 *Condition : LED is pulled up to VREG34V first VRECT LED turns on Figure B-18 LED Characteristics 2 *LED lights up when the output starts. VRECT OUT OUT VTH LED FULLCHLowHigh Figure B-19 LED Turned off by a Full Charge *FULLCH detects a full-charge, and LED turns off when the output goes down. LED VTHHighLow Figure B-20 LED Turned off by an over temperature *VTH detects an over temperature, and LED turns off when the output goes down. VRECT IOUT OUT LED Over current detected Figure B-21 LED Turned off by an over current After an over current is detected, LED turns off when the output goes down. Page 26 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A TYPICAL CHARACTERISTICS (Continued) Efficiency [%] 12. Power Efficiency IOUT [mA] Figure B-22. Power Efficiency 13. Transient Characteristics VRECT VRECT OUT VRECT minimum: 4.25V IOUT OUT VRECT minimum: 4.47V IOUT Figure B-23. Load current changed 0mA1000mA Figure B-24. Load Current Changed 0mA800mA VRECT VRECT OUT VRECT minimum: 4.65V IOUT Figure B-25. Load current changed 0mA600mA OUT VRECT minimum: 4.74V IOUT Figure B-26. Load current changed 0mA400mA Page 27 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A TYPICAL CHARACTERISTICS (Continued) 13. Transient Characteristics (Continued) VRECT VRECT OUT OUT IOUT IOUT VRECT minimum: 3.76V VRECT minimum: 3.17V FigureB-27. Load Current Changed 400mA1000mA Figure B-28. Load Current Changed 400mA800mA VRECT OUT IOUT VRECT minimum: 4.43V Figure B-29. Load Current Changed 400mA600mA VOUT Ripple [mV] 14. VOUT Ripple Voltage IOUT [A] FigureB-30. VOUT Ripple Characteristics Page 28 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A Package Information Package Code : XBGA048-W-3232AML Unit: mm Page 29 of 30 Established : 2014-10-22 Revised : ####-##-## Doc No. TA4-EA-06273 Revision. 1 Product Standards Ver.2.00 AN32258A IMPORTANT NOTICE 1. When using the IC for new models, verify the safety including the long-term reliability for each product. 2. When the application system is designed by using this IC, please confirm the notes in this book. Please read the notes to descriptions and the usage notes in the book. 3. This IC is intended to be used for general electronic equipment. Consult our sales staff in advance for information on the following applications: Special applications in which exceptional quality and reliability are required, or if the failure or malfunction of this IC may directly jeopardize life or harm the human body. Any applications other than the standard applications intended. (1) Space appliance (such as artificial satellite, and rocket) (2) Traffic control equipment (such as for automotive, airplane, train, and ship) (3) Medical equipment for life support (4) Submarine transponder (5) Control equipment for power plant (6) Disaster prevention and security device (7) Weapon (8) Others : Applications of which reliability equivalent to (1) to (7) is required Our company shall not be held responsible for any damage incurred as a result of or in connection with the IC being used for any special application, unless our company agrees to the use of such special application. However, for the IC which we designate as products for automotive use, it is possible to be used for automotive. 4. This IC is neither designed nor intended for use in automotive applications or environments unless the IC is designated by our company to be used in automotive applications. Our company shall not be held responsible for any damage incurred by customers or any third party as a result of or in connection with the IC being used in automotive application, unless our company agrees to such application in this book. 5. Please use this IC in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. Our company shall not be held responsible for any damage incurred as a result of our IC being used by our customers, not complying with the applicable laws and regulations. 6. Pay attention to the direction of the IC. When mounting it in the wrong direction onto the PCB (printed-circuit-board), it might be damaged. 7. Pay attention in the PCB (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. In addition, refer to the Pin Description for the pin configuration. 8. Perform visual inspection on the PCB before applying power, otherwise damage might happen due to problems such as solder-bridge between the pins of the IC. Also, perform full technical verification on the assembly quality, because the same damage possibly can happen due to conductive substances, such as solder ball, that adhere to the IC during transportation. 9. Take notice in the use of this IC that it might be damaged when an abnormal state occurs such as output pin-VCC short (Power supply fault), output pin-GND short (Ground fault), or output-to-output-pin short (load short). Safety measures such as installation of fuses are recommended because the extent of the above-mentioned damage will depend on the current capability of the power supply. 10. The protection circuit is for maintaining safety against abnormal operation. Therefore, the protection circuit should not work during normal operation. Especially for the thermal protection circuit, if the area of safe operation or the absolute maximum rating is momentarily exceeded due to output pin to VCC short (Power supply fault), or output pin to GND short (Ground fault), the IC might be damaged before the thermal protection circuit could operate. 11. Unless specified in the product specifications, make sure that negative voltage or excessive voltage are not applied to the pins because the IC might be damaged, which could happen due to negative voltage or excessive voltage generated during the ON and OFF timing when the inductive load of a motor coil or actuator coils of optical pick-up is being driven. 12. Verify the risks which might be caused by the malfunctions of external components. Page 30 of 30 Established : 2014-10-22 Revised : ####-##-## Request for your special attention and precautions in using the technical information and semiconductors described in this book (1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) The technical information described in this book is intended only to show the main characteristics and application circuit examples of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. (3) The products described in this book are intended to be used for general applications (such as office equipment, communications equipment, measuring instruments and household appliances), or for specific applications as expressly stated in this book. Consult our sales staff in advance for information on the following applications: - Special applications (such as for airplanes, aerospace, automotive equipment, traffic signaling equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. It is to be understood that our company shall not be held responsible for any damage incurred as a result of or in connection with your using the products described in this book for any special application, unless our company agrees to your using the products in this book for any special application. (4) The products and product specifications described in this book are subject to change without notice for modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. (7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company. 20100202