bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 High-Efficiency Qi v1.1-Compliant Wireless Power Receiver and Battery Charger Check for Samples: bq51050B, bq51051B FEATURES • 1 • • Single-Stage Wireless Power Receiver and Li-Ion/Li-Pol Battery Charger – Combines Wireless Power Receiver, Rectifier and Battery Charger in a Single Small Package – 4.2V and 4.35V Output Voltage Options – Supports up to 1.5A Charging Current – 93% Peak AC-DC Charging Efficiency Robust Architecture – 20V Maximum Input Voltage Tolerance, with Input OV Protection Clamp – Thermal Shutdown and Over Current Protection – Temperature Monitoring and Fault Detection • • Compatible with WPC v1.1 “Qi” Industry Standard Power Stage Output Tracks Rectifier and Battery Voltage to Ensure Maximum Efficiency Across the Full Charge Cycle Available in small WCSP and QFN packages APPLICATIONS • • • • • Battery Packs Cell Phones, Smart Phones Headsets Portable Media Players Other Hand-Held Devices DESCRIPTION The bq5105x is a high efficiency, wireless power receiver with Li-Ion/Li-Pol battery charge controller for portable applications. The bq5105x device provides efficient AC/DC power conversion, integrates digital controller required to comply with Qi v1.1 communication protocol and all necessary control algorithms needed for efficient and safe Li-Ion and Li-Pol battery charger. Together with bq500210 transmitter-side controller, the bq5105x enables a complete wireless power transfer system for direct battery charger solution. By utilizing near-field inductive power transfer, the receiver coil embedded in the portable device can pick up the power transmitted by transmitter coil. The AC signal from the receiver coil is then rectified and conditioned to apply power directly to the battery. Global feedback is established from the receiver to the transmitter in order to stabilize the power transfer process. This feedback is established by utilizing the Qi v1.1 communication protocol. The bq5105x devices integrate a low-impedance synchronous rectifier, low-dropout regulator, digital control, charger controller, and accurate voltage and current loops in a single package. The entire power stage (rectifier and LDO) utilize low resistive N-MOSFET’s (100mΩ typical Rdson) to ensures high efficiency and low power dissipation. Wired Charger Q1 USB or AC Adapter Input bq5105xB C5 /AD-EN AD BATT CCOMM1 CBOOT1 COMM1 C4 D1 BOOT1 C1 RECT AC1 TI Wireless Power Transmitter R4 C3 TX COIL RX COIL C2 NTC PACK+ TS AC2 CBOOT2 BOOT2 ROS COMM2 CLAMP2 TERM CCLAMP2 R1 Tri-State EN2 CLAMP1 CCLAMP1 ILIM PACK- /CHG CCOMM2 FOD PGND Bi-State R5 HOST RFOD Figure 1. Typical System Blocks Show bq5105xB Used as a Wireless Power Li-Ion/Li-Pol Battery Charger Note: Visit ti.com/wirelesspower for product details and design resources 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2012–2013, Texas Instruments Incorporated bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ORDERING INFORMATION PART NO. IC MARKING PACKAGE ORDERING NUMBER (TAPE AND REEL) QUANTITY bq51050B WCSP-28 bq51050BYFPR bq51050BYFPT 3000 250 bq51050B VQFN-20 bq51050BRHLR bq51050BRHLT 3000 250 bq51051B WCSP-28 bq51051BYFPR bq51051BYFPT 3000 250 bq51051B VQFN-20 bq51051BRHLR bq51051BRHLT 3000 250 bq51050B bq51051B AVAILABLE OPTIONS DEVICE FUNCTION VRECT-OVP VRECT(REG) bq51050B bq51051B VBAT(REG) NTC MONITORING 4.2V Li-Ion Wireless Battery Charger 15V 4.35V Li-Ion Wireless Battery Charger 15V Track 4.2V JEITA Track 4.35V JEITA ABSOLUTE MAXIMUM RATINGS (1) (2) over operating free-air temperature range (unless otherwise noted) VALUES Input voltage UNITS MIN MAX AC1, AC2, RECT, COMM1, COMM2, BAT(OUT), CHG, CLAMP1, CLAMP2 –0.3 20 V AD, AD-EN –0.3 30 V BOOT1, BOOT2 –0.3 26 V EN2, TERM, FOD, TS-CTRL, ILIM –0.3 7 V A(RMS) Input current AC1, AC2 2 Output current BAT(OUT) 1.5 A CHG 15 mA Output sink current COMM1, COMM2 Junction temperature, TJ Storage temperature, TSTG ESD Rating (1) (2) 2 Human body model (HBM)(100pF, 1.5kΩ) Charged device model (CDM) 1.0 A –40 150 °C –65 150 °C 2 kV 500 V 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. All voltages are with respect to the VSS terminal, unless otherwise noted. Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 THERMAL INFORMATION THERMAL METRIC (1) YFP RHL 28-PINS 20-PINS θJA Junction-to-ambient thermal resistance 58.9 37.7 θJCtop Junction-to-case (top) thermal resistance 0.2 35.5 θJB Junction-to-board thermal resistance 9.1 13.6 ψJT Junction-to-top characterization parameter 1.4 0.5 ψJB Junction-to-board characterization parameter 8.9 13.5 θJCbot Junction-to-case (bottom) thermal resistance n/a 2.7 UNITS °C/W space (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT 4.0 10.0 V RECT 1.5 A BAT(output) current BAT 1.5 Sink current AD-EN 1 mA ICOMM COMM sink current COMM 500 mA TJ Junction temperature 125 °C VIN Input voltage range RECT IIN Input current IBAT IAD-EN 0 A TYPICAL APPLICATION SCHEMATIC Wired Charger bq5105x AD-EN AD BAT C COMM1 USB or AC Adapter Input C4 COMM1 C BOOT1 D1 BOOT1 C1 RECT AC1 C3 C5 COIL C2 R4 PACK + NTC TS AC2 R OS BOOT2 C BOOT2 PACK- COMM2 CHG CCOMM2 CCLAMP2 C CLAMP1 CLAMP2 TERM Tri-State CLAMP1 EN2 Bi-State ILIM R1 FOD PGND R5 HOST RFOD Figure 2. bq5105x Used as a Wireless Power Receiver and Li-Ion/Li-Pol Battery Charger Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 3 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER VUVLO VHYS-UVLO TEST CONDITIONS Under-voltage lock-out VRECT: 0V → 3V Hysteresis on UVLO VRECT: 3V → 2V MIN TYP MAX 2.6 2.7 2.8 250 UNIT V mV Hysteresis on OVP VRECT: 16V → 5V VRECT Input over-voltage threshold VRECT: 5V → 16V VRECT-REG (1) VRECT regulation voltage ILOAD ILOAD Hysteresis for dynamic VRECT thresholds as a % of IILIM ILOAD falling 5% VTRACK Tracking VRECT regulation above VBAT VBAT = 3.5 V, IBAT ≥ 500mA 300 VRECT-REV Rectifier reverse voltage protection at the BAT(output) VRECT-REV = VBAT – VRECT, VBAT = 10V 8.3 9 V VRECT-DPM Rectifier under voltage protection, restricts IBAT at VRECT-DPM 3.1 3.2 V IBAT = 0, 0°C ≤ TJ ≤ 85°C 8 10 mA IBAT = 300mA, 0°C ≤ TJ ≤ 85°C 2 3 mA 12 20 µA 120 Ω 150 14.5 15 mV 15.5 5.11 3 V V mV QUIESCENT CURRENT IRECT Active chip quiescent current consumption from RECT (in the prswireless power is present) IQ Quiescent current at the BAT when wireless power is disabled(Standby) VBAT = 4.2V, 0°C ≤ TJ ≤ 85°C ILIM SHORT PROTECTION RILIM-SHORT Highest value of ILIM resistor considered a fault (short). RILIM: 200 Ω → 50 Ω. IBAT latches off, cycle power to reset Monitored for IBAT > 100 mA tDGL-Short Deglitch time transition from ILIM short to IBAT disable ILIM_SC ILIM-SHORT,OK enables the ILIM short comparator when IBAT is greater than this value IBAT: 0 → 200 mA Hysteresis for ILIM-SHORT,OK comparator IBAT: 200 → 0 mA Maximum output current limit Maximum IBAT that will be delivered for 1 ms when ILIM is shorted 1 110 145 ms 165 mA ILIM-SHORT, OK 30 mA HYSTERESIS IBAT-CL 2.4 A BATTERY SHORT PROTECTION VBAT(SC) BAT pin short-circuit detection/pre-charge threshold VBAT: 3 V → 0.5 V, no deglitch VBAT(SC)-HYS VBAT(SC) hysteresis VBAT: 0.5 V → 3 V IBAT(SC) Source current to BAT pin during short-circuit detection VBAT = 0V 12 18 22 mA Pre-charge to fast charge transition threshold VBAT: 2 V → 4 V 2.9 3.0 3.1 V KPRECHG Pre-charge current as a percentage of IBAT VLOWV > VBAT > VBAT(SC), IBAT: 50 – 300 mA 18% 20% 23% tpre-charge Pre-charge timeout VBAT<VLOWV 30 min tDGL1(LOWV) De-glitch time, pre- to fast-charge 25 ms tDGL2(LOWV) De-glitch time, fast- to pre-charge 25 ms 36000 sec 1800 sec 0.75 0.8 0.85 100 V mV PRECHARGE VLOWV TIMERS Tfast-charge Fast-charge timer VLOWV < VBAT < VBAT(REG) Tpre-charge Pre-charge timer VBAT-SHORT < VBAT < VLOWV VOREG Regulated BAT(output) voltage IBAT = 1000 mA VDO Drop-out voltage, RECT to BAT IBAT = 1A KILIM Current programming factor RLIM = KILIM / IILIM IBAT Battery charge current limit programming range ICOMM-CL Current limit during communication OUTPUT (1) 4 bq51050B 4.16 4.2 4.22 bq51051B 4.30 4.35 4.37 110 190 300 320 AΩ 1500 mA 420 mA 290 330 390 V mV VRECT(REG) is over ridden when rectifier fold back mode is active (VRECT(REG)-TRACKING). Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 200 240 280 Ω/% 40 50 55 µA TERMINATION KTERM Programmable termination current as a percentage of IILIM ITERM Constant current at the TERM pin to bias the termination reference VRECH RTERM = %IILIM x KTERM bq51050B VBAT(REG) VBAT(REG) VBAT(REG) –135mV –110mV –90mV bq51051B VBAT(REG) VBAT(REG) VBAT(REG) –125mV –95mV –70mV Recharge threshold V TS / CTRL Internal TS bias voltage ITS-Bias < 100 µA (periodically driven see tTS/CTRL-Meas) Rising threshold Falling threshold Hysteresis on 0C Comparator VTS: 60% → 50% V10C Rising threshold VTS: 40% → 50% V10C-Hyst Hysteresis on 10C Comparator VTS: 50% → 40% V45C Falling threshold VTS: 25% → 15% V45C-Hyst Hysteresis on 45C Comparator VTS: 15% → 25% V60C Falling threshold VTS: 20% → 5% V60C-Hyst Hysteresis on 60C Comparator VTS: 5% → 20% I45C ILIM reduction percentage at 45c VTS: 25% → 15%, ILOAD = IILIM 45 50 55 % VCTRL-HI CTRL pin threshold for a high VTS/CTRL: 50 → 150 mV 80 100 130 mV VCTRL-LOW CTRL pin threshold for a low VTS/CTRL: 150 → 50 mV 50 80 100 mV TTS/CTRL-Meas Time period of TS/CTRL measurements--when VTSB is being driven TS bias voltage is only driven when communication packets are sent tTS-Deglitch Deglitch time for all TS comparators NTC-Pullup Pull-up resistor for the NTC network. Pulled up to the TS bias LDO. NTC-RNOM Nominal resistance requirement at 25c of the NTC resistor NTC-Beta Beta requirement for accurate temperature sensing via the above specified thresholds VTS VOC 2 2.2 2.4 V VTS: 50% → 60% 57 58.7 60 VTS: 60% → 50% 55 56.3 57 %VTSB 49 %VTSB 2.4 46 47.8 2 18 19.6 %VTSB 21 3 12 13.1 %VTSB 14 1 18 %VTSB %VTSB %VTSB 24 ms 10 ms 20 22 kΩ 10 kΩ 3380 Ω 155 °C 20 °C THERMAL PROTECTION TJ Thermal shutdown temperature Thermal shutdown hysteresis OUTPUT LOGIC LEVELS ON /CHG VOL IOFF,CHG Open drain CHG pin ISINK = 5 mA CHG leakage current when disabled VCHG = 20 V, 0°C ≤ TJ ≤ 85°C Comm1 and Comm2 Vrect = 2.6V 500 mV 1 µA COMM PIN RDSON(COMM) fCOMM IOFF,Comm Signaling frequency on COMM pin Ω 1 2.00 VCOMM1 = 20 V, VCOMM2 = 20 V Comm pin leakage current Kb/s 1 µA CLAMP PIN RDS- Clamp1 and Clamp2 0.75 Ω ON(CLAMP) Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 5 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over junction temperature range 0°C ≤ TJ ≤ 125°C and recommended supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 80 115 140 UNIT SYNCHRONOUS RECTIFIER IBAT VHS-DIODE IBAT at which the synchronous rectifier enters half synchronous mode, SYNC_EN IBAT 200 → 0 mA Hysteresis for IBAT,RECT-EN (full-synchronous mode enabled) IBAT 0 → 200 mA 25 High-side diode drop when the rectifier is in half synchronous mode IAC-VRECT = 250 mA, and TJ = 25°C 0.7 mA V EN2 VIL Input low threshold for EN2 VIH Input high threshold for EN2 RPD, EN EN2 pull down resistance 0.4 1.3 V V 200 kΩ 0.25 W ADC PowerREC 6 Received power measurement Submit Documentation Feedback 0W – 5W received power after calibration of Rx magnetics losses Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 DEVICE INFORMATION SIMPLIFIED BLOCK DIAGRAM I BAT VREF,ILIM VILIM VOUT,FB + _ + _ RECT VOUT,REG VREF,IABS VIABS,FB + _ VIN,FB VIN,DPM + _ ILIM AD VREFAD,OVP + _ BOOT2 BOOT1 + _ VREFAD,UVLO AD-EN AC1 AC2 Sync Rectifier Control VREF,TS-BIAS COMM1 COMM2 DATA _ OUT ADC CLAMP1 Digital Control And Charger VFOD OVP CHG VBG,REF VIN,FB VOUT,FB VILIM VIABS,FB VIABS,REF VIC,TEMP + _ 50uA VRECT VOVP,REF TERM TS_0 + _ TS_10 + _ TS_45 + _ TS_60 + _ TS_DETECT + _ FOD TS/CTRL VREF_100MV + CLAMP2 VFOD + _ TERM ILIM _ EN2 200kW PGND Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 7 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com YFP Package 3.0mm x 1.9mm 28-Pin WCSP (TOP VIEW) RHL Package 4.35mm x 3.35mm 20-Pin QFN (TOP VIEW) PGND 1 A1 PGND A2 PGND A3 PGND A4 PGND B1 AC2 B2 AC2 B3 AC1 B4 AC1 C1 BOOT2 C2 RECT C3 RECT C4 BOOT1 D1 BAT D2 BAT D3 BAT PGND 20 AC1 2 AC2 19 BOOT1 3 RECT 18 BAT 4 BOOT2 17 CLMP1 5 CLMP2 16 COM1 6 COM2 15 CHG 7 FOD 14 AD-EN 8 TS/ CTRL 13 AD 9 ILIM 12 D4 BAT E1 COM2 E2 CLMP2 E3 CLMP1 E4 COM1 F1 TS/CTRL F2 FOD F3 AD-EN F4 CHG G1 ILIM G2 EN2 G3 TERM G4 AD TERM 10 EN2 11 PIN FUNCTIONS NAME WCSP QFN I/O AC1 B3, B4 2 I AC2 B1, B2 19 I DESCRIPTION Input power from receiver coil. BOOT1 C4 3 O BOOT2 C1 17 O RECT C2, C3 18 O Filter capacitor for the internal synchronous rectifier. Connect a ceramic capacitor to PGND. Depending on the power levels, the value may be 4.7μF to 22μF. BAT D1, D2, D3, D4 4 O Output pin, delivers power to the battery while applying the internal charger profile. COM1 E4 6 O Open-drain output used to communicate with primary by varying reflected impedance. Connect through a capacitor to either AC1 or AC2 for capacitive load modulation (COMM2 must be connected to the alternate AC1 or AC2 pin). For resistive modulation connect COMM1 and COMM2 to RECT via a single resistor; connect through separate capacitors for capacitive load modulation. COM2 E1 15 O Open-drain output used to communicate with primary by varying reflected impedance. Connect through a capacitor to either AC1 or AC2 for capacitive load modulation (COMM1 must be connected to the alternate AC1 or AC2 pin). For resistive modulation connect COMM1 and COMM2 to RECT via a single resistor; connect through separate capacitors for capacitive load modulation. CLMP1 E3 5 O CLMP2 E2 16 O PGND A1, A2, A3, A4 1, 20 – 8 Bootstrap capacitors for driving the high-side FETs of the synchronous rectifier. Connect a 10nF ceramic capacitor from BOOT1 to AC1 and from BOOT2 to AC2. Open drain FETs which are utilized for a non-power dissipative over-voltage AC clamp protection. When the RECT voltage goes above 15 V, both switches will be turned on and the capacitors will act as a low impedance to protect the IC from damage. If used, Clamp1 is required to be connected to AC1, and Clamp2 is required to be connected to AC2 via 0.47µF capacitors. Power ground Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 PIN FUNCTIONS (continued) NAME WCSP QFN I/O DESCRIPTION Programming pin for the battery charge current. Connect external resistor to VSS. Size RILIM with the following equation: RILIM = 300 / IILIM where IILIM is the desired battery charge current. ILIM G1 12 I/O AD G4 9 I Connect this pin to the wired adapter input. When a voltage is applied to this pin wireless charging is disabled and AD_EN is driven low. Connect to GND through a 1µF capacitor. If unused, capacitor is not required and should be grounded directly. AD-EN F3 8 O Push-pull driver for external PFET when wired charging is active. TS/CTRL F1 13 I Must be connected to ground via a NTC resistor. If an NTC function is not desired, connect to GND with a 10 kΩ resistor. As a CTRL pin pull to ground to send end power transfer (EPT) fault to the transmitter or pull-up to an internal rail (i.e. 1.8 V) to send EPT termination to the transmitter. TERM G3 10 I Input that allows the termination threshold to be programmable. KTERM = 240 Ω/%. Set the termination threshold by applying the following equation RTERM = %IILIM × KTERM where %IILIM is the desired percentage of fast charge current when termination should occur. EN2 G2 11 I EN2=0 enables wired charging source if AD input volatge is above 3.6V, wireless charging is enabled if AD input volatge is < 3.6V, EN2=1 disables wired charging source; wireless power is always enabled if present. FOD F2 14 I Input for the rectified power measurement. Connect to GND with a 188 Ω resistor. CHG F4 7 O Open-drain output – active when charging of the battery is active. Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 9 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com TYPICAL CHARACTERISTICS 100 100 90 90 80 Efficiency (%) Efficiency (%) 70 80 70 60 60 50 40 30 20 50 Pre-charge & fast charge mode Taper mode 10 40 0 1 2 3 Output Power (W) 0 0.00 5 4 Figure 3. Rectifier Efficiency 1.00 2.00 3.00 Output Power (W) 4.00 5.00 Figure 4. IC Efficiency (AC input to DC output) 6.0 5.50 5.00 5.0 Vrect Rectifier Voltage (V) Vrect and Vbat (V) 4.50 4.00 3.50 3.00 Vbat 4.0 3.0 2.50 Pre-charge & fast charge mode Taper mode 2.0 Precharge & fast charge mode Taper mode 2.00 1.50 0.00 0.20 0.40 0.60 0.80 Output Current (A) Figure 5. Vrect, Vbat Vs Output Current 10 Submit Documentation Feedback 1.00 RILIM=600W 1.0 0.0 0.1 0.2 0.3 0.4 Output Current (A) 0.5 0.6 Figure 6. Vrect vs Output Current at RILIM=600Ω Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 TYPICAL CHARACTERISTICS (continued) 0.008 70 Pre-charge & fast charge mode Taper mode 0.007 60 0.005 Efficiency (%) Output Ripple (V) 0.006 0.004 0.003 50 40 30 0.002 20 0.001 0 10 0 0.2 0.4 0.6 0.8 1 1.2 0 1 2 3 Output Power (W) Output Current (A) Figure 7. Output Ripple vs Output Current 4 Figure 8. System Efficiency (DC input to DC output) VRECT VRECT VBAT VBAT IBAT IBAT Figure 9. Battery Insertion in Pre-Charge Mode Figure 10. Battery Insertion in Fast-Charge Mode VRECT VRECT VTS/CTRL VTS/CTRL VBAT VBAT IBAT Figure 11. TS Fault IBAT Figure 12. TS Ground Fault Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 11 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) VTS/CTRL VRECT VRECT VBAT IBAT VBAT IBAT Figure 13. Pre-Charge to Fast Charge Transition Figure 14. JEITA Functionality (Rising Temp) VRECT VRECT VTS/CTRL VBAT IBAT Figure 15. JEITA Functionality (Falling Temp) 12 Submit Documentation Feedback IBAT VBAT Figure 16. Battery Short to Pre-Charge Mode Transition Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 PRINCIPLE OF OPERATION Power AC to DC bq5105x Drivers Rectification Voltage/ Current Conditioning System Communication V/I Sense Controller Controller Battery Charger LI-Ion Battery bq500210 Transmitter Receiver Figure 17. WPC Wireless Power Charging System Indicating the Functional Integration of the bq5105x A Brief Description of the Wireless System A wireless system consists of a charging pad (primary, transmitter) and the secondary-side equipment. There are coils in the charging pad and in the secondary equipment which magnetically coupled to each other when the equipment is placed on the charging pad. Power is transferred from the primary to the secondary by transformer action between the coils. Control over the amount of power transferred is achieved by changing the frequency of the primary drive. The secondary can communicate with the primary by changing the load seen by the primary. This load variation results in a change in the primary coil current, which is measured and interpreted by a processor in the charging pad. The communication is digital - packets are transferred from the secondary to the primary. Differential Biphase encoding is used for the packets. The bit rate is 2Kbits / second. Various types of communication packets have been defined. These include identification and authentication packets, error packets, control packets, power usage packets, end of power packet and efficiency packets. The primary coil is powered off most of the time. It wakes up occasionally to see if a secondary is present. If a secondary authenticates itself to the primary, the primary remains powered up. The secondary maintains full control over the power transfer using communication packets. Using the bq5105x as a Wireless Li-Ion/Li-Pol Battery Charger (With reference to Figure 2) Figure 2 is the schematic of a system which uses the bq5105x as direct battery charger. When the system shown in Figure 2 is placed on the charging pad (transmitter), the receiver coil couples to the magnetic flux generated by the coil in the charging pad which consequently induces a voltage in the receiver coil. The internal synchronous rectifier feeds this voltage to the RECT pin which has the filter capacitor C3. The bq5105x identifies and authenticates itself to the primary using the COM pins by switching on and off the COM FETs and hence switching in and out CCOMM. If the authentication is successful, the transmitter will remain powered on. The bq5105x measures the voltage at the RECT pin, calculates the difference between the actual voltage and the desired voltage VRECT-REG and sends back error packets to the primary. This process goes on until the RECT voltage settles at VRECT-REG. During power-up, the LDO is held off until the VRECT-REG threshold converges. The voltage control loop ensures that the output (BAT) voltage is maintained at VBAT-REG to power the system depends on the battery charge mode. The bq5105x continues to monitor the VRECT and VBAT and maintains sending error packets to the primary every 250ms. The bq5105x regulates the VRECT voltage very close to battery voltage, this voltage tracking process minimizes the voltage difference across the internal LDO and maximize the charging efficiency. If a large transient occurs, the feedback to the primary speeds up to every 32ms in order to converge on an operating point in less time. Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 13 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com Battery Charge Profile The bq5105x charger monitors the battery current at all times and reduces the charge current when the system load requires current above the input current limit. The charge profile is shown in Figure 18. Precharge Phase Current Regulation Phase Voltage Regulation Phase V- RECT-REG Regulation voltage I BULK Rectifier voltage VBAT + 300mV V LOWV (3.0V) Battery Voltage V BAT -SHORT (1.0V) 35% of I BULK Charge Current Termination Current Threshold I PRECHARGE I BATSHORT 20% Precharge to Close Pack Protector Exits VRECT -TRACK V RECT -TRACK Tx Turned OFF Figure 18. Li-Ion Battery Charger Profile This allows for proper charge termination and timer operation. Under normal battery charging conditions, the system voltage is approximately equal to the battery voltage, however if the battery is deeply discharged, the system voltage does not drop below 3.5V. This minimum system voltage support enables the system to run with a defective or absent battery pack and enables instant system turn-on even with a totally discharged battery or no battery. The battery is charged in three phases: precharge, fast-charge constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. Additionally, a voltage-based battery pack thermistor monitoring input (TS) is included that monitors battery temperature for safe charging. The TS function for bq5105x is JEITA compatible. Battery Charging Process Precharge Mode (VBAT ≤ VLOWV) The bq5105X enters pre-charge mode when VBAT ≤ VLOWV. Upon entering precharge mode, battery charge current limit is set to IPRECHARGE. During pre-charge mode, the charge current is regulated to 20% of the fast charge current (IBULK) setting. If the battery is deeply discharged or shorted (VBAT < VBAT-SHORT), the bq5105X applies IBAT-SHORT current to bring the battery voltage up to acceptable charging levels. Once the battery rises above VBAT-SHORT, the charge current is regulated to IPRECHARGE. Under normal conditions, the time spent in this pre-charge region is a very short percentage of the total charging time and this does not affect the overall charging efficiency for very long. 14 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 Fast Charge Mode /Constant Voltage Mode Once VBAT > VLOWV, the bq5105x enters fast charge mode (Current Regulation Phase) where charge current is regulated using the internal MOSFETs between RECT and BAT.Once the battery voltage charges up to VBAT-REG, the bq5105x enters constant voltage (CV) phase and regulates battery voltage to VBAT(REG) and the charging current is reduced. Once the input current falls below the termination threshold (ITERM),the charger goes into high impedance. Battery Charge Current Setting Calculations RILIM Calculations The bq5105x includes a means of providing hardware overcurrent protection by means of an analog current regulation loop. The hardware current limit provides an extra level of safety by clamping the maximum allowable output current (e.g., a current compliance). The calculation for the total RILIM resistance is as follows: 300 R1 = - RFOD RILIM = R1 + RFOD IBULK (1) Where IBULK is the expected maximum battery charge current during fast charge mode and IBULK is the hardware over current limit. When referring to the application diagram shown in Figure 2, RILIM is the sum of RFOD(188Ω) and the resistance from the ILIM pin to GND). Termination Calculations The bq5105X includes a programmable upper termination threshold. This pin can be used to send the charge status 100% packet (CS100) to the transmitter in order to indicate a full charge status. The header for this packet is 0x05. Note that this packet does not turn off the transmitter and is only used as an informative indication of the mobile device’s charge status. The upper termination threshold is calculated using Equation 2: RTERM = K TERM ´ %IBULK (2) The KTERM constant is specified in the datasheet as 240. The upper termination threshold is set as a percentage of the ILIM setting. For example, if the ILIM resistor is set to 300 Ω the ILIM current will be 1A (300 ÷ 300). If the upper termination threshold is desired to be 100 mA, this would be 10% of ILIM. The RTERM resistor would then equal 2.4 kΩ (240 x 10). Battery-Charger Safety and JEITA Guidelines The bq5105x continuously monitors battery temperature by measuring the voltage between the TS pin and GND. A negative temperature coefficient thermistor (NTC) and an external voltage divider typically develop this voltage. The bq5105x compares this voltage against its internal thresholds to determine if charging is allowed. To initiate a charge cycle, the voltage on TS pin must be within the VT1 to VT4 thresholds. If VTS is outside of this range, the bq5105x suspends charge and waits until the battery temperature is within the VT1 to VT4 range. If VTS is within the range of VT1 and VT2, the charge current is reduced to IBULK/2. if VTS is within the range of VT2 and VT3, the maximum charge voltage regulation is 4.25V. if VTS is within VT3 and VT4, the maximum charge voltage regulation is reduced back to 4.10V and charge current is reduced to IBULK/2. Figure 19 summarizes the operation. Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 15 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com Maximum Charge Current: 1C 0.5C Charge Voltage: 4.35V (bq51051B) Charge Voltage: 4.2V (bq51050B) 4.2V (bq51051B) 4.1V (bq51050B) T1 (0°C) T2 (10°C) T3 (45°C) T4 (60°C) Figure 19. JEITA Compatible TS Profile Input over-voltage If, for some condition (e.g., a change in position of the equipment on the charging pad), the rectifier voltage suddenly increases in potential, the voltage-control loop inside the bq5105x becomes active, and prevents the output from going beyond VBAT-REG. The receiver then starts sending back error packets every 30ms until the RECT voltage comes back to an acceptable level, and then maintains the error communication every 250ms. If the input voltage increases in potential beyond VOVP, the IC switches off internal FET and tells the primary to bring the voltage back to VRECT(REG). In additional a proprietary voltage protection circuit is activated by means of Cclamp1 and Cclamp2 that protects the IC from voltages beyond the maximum rating of the IC (e.g., 20V). End Power Transfer Packet (WPC Header 0x02) The WPC allows for a special command to terminate power transfer from the TX termed End Power Transfer (EPT) packet. The v1.1 specifies the below reasons and their responding data field value. The Condition column corresponds to the case where the bq5101x device will send this command. REASON VALUE Unknown 0x00 AD > 3.6V Charge Complete 0x01 TS/CTRL = 1 Internal Fault 0x02 TJ > 150°C or RILIM < 100Ω Over Temperature 0x03 TS < VHOT, TS > VCOLD, or TS/CTRL < 100mV Over Voltage 0x04 Not Sent Over Current 0x05 Not Sent Battery Failure 0x06 Not Sent Reconfigure 0x07 Not Sent No Response 0x08 VRECT target does not converge 16 Submit Documentation Feedback CONDITION Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 Status Outputs The bq5105x provides one status output, CHG. This output is an open-drain NMOS device that is rated to 20 V. The open-drain FET connected to the CHG pin will be turned on whenever the output (BAT) of the chagrer is enabled. As a note, the output of the charger supply will not be enabled if the VRECT(REG) does not converge at the no-load target voltage. Communication Modulator The bq5105x provides two identical, integrated communication FETs which are connected to the pins COM1 and COM2. These FETs are used for modulating the secondary load current which allows bq5105x to communicate error control and configuration information to the transmitter. Figure 20 shows how the COMM pins can be used for resistive load modulation. Each COMM pin can handle at most a 24Ω communication resistor. Therefore, if a COMM resistor between 12Ω and 24Ω is required COM1 and COM2 pins must be connected in parallel. bq5105x does not support a COMM resistor less than 12Ω. Figure 20. Resistive Load Modulation In addition to resistive load modulation, the bq5105x is also capable of capacitive load modulation as shown in Figure 21. In this case, a capacitor is connected from COM1 to AC1 and from COM2 to AC2. When the COMM switches are closed there is effectively a 22 nF capacitor connected between AC1 and AC2. Connecting a capacitor in between AC1 and AC2 modulates the impedance seen by the coil, which will be reflected in the primary as a change in current. Figure 21. Capacitive Load Modulation Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 17 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com Synchronous Rectification The bq5105x provides an integrated, self-driven synchronous rectifier that enables high-efficiency AC to DC power conversion. The rectifier consists of an all NMOS H-Bridge driver where the back gates of the diodes are configured to be the rectifier when the synchronous rectifier is disabled. During the initial startup of the WPC system the synchronous rectifier is not enabled. At this operating point, the DC rectifier voltage is provided by the diode rectifier. Once VRECT is greater than UVLO, half synchronous mode will be enabled until the load current surpasses 140 mA. Above 140 mA the full synchronous rectifier stays enabled until the load current drops back below 100 mA where half synchronous mode is enabled instead. Internal Temperature Sense (TS) The bq5105x includes a ratiometric battery temperature sense circuit. The temperature sense circuit has two ratiometric thresholds which represent a hot and cold condition. An external temperature sensor is recommended to provide safe operating conditions to the receiver product. This pin is best utilized when monitoring the surface that can be exposed to the end user. The circuit in Figure 22 allows for any NTC resistor to be used with the given VHOT and VCOLD thresholds. 20 k Ω R2 TS-CTRL R1 R3 NTC Figure 22. NTC Circuit used for Safe Operation of the Wireless Receiver Power Supply The resistors R2 and R3 can be solved by resolving the system of equations at the desired temperature thresholds. The two equations are: %VCOLD %VHOT æ R3 RNTC ö TCOLD ÷ ç ç R3 + RNTC ÷ TCOLD ø = è ´ 100 æ R3 RNTC ö TCOLD ç ÷ + R2 ç R3 + RNTC ÷ TCOLD ø è (3) æ R3 RNTC ö THOT ÷ ç ç R3 + RNTC ÷ THOT ø = è ´ 100 æ R3 RNTC ö THOT ç ÷ + R2 ç R3 + RNTC ÷ THOT ø è (4) Where: RNTC TCOLD RNTC 18 THOT b = Ro e (1TCOLD - 1To ) b = Ro e (1THOT - 1To ) Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 TCOLD and THOT are the desired temperature thresholds in degrees Kelvin. Ro is the nominal resistance and β is the temperature coefficient of the NTC resistor. An example solution for part number ERT-JZEG103JA is: R2 = 7.81 kΩ R3 = 13.98 kΩ Where, TCOLD = 0°C THOT = 0°C β = 4500 Ro = 10 kΩ The plot of the percent VTSB vs temperature is shown in Figure 23: Figure 23. Example Solution for Panasonic Part # ERT-JZEG103JA Figure 24 illustrates the periodic biasing scheme used for measuring the TS state. The TS_READ signal enables the TS bias voltage for 25 ms. During this period the TS comparators are read (each comparator has a 10 ms deglitch) and appropriate action is taken based on the temperature measurement. After this 25 ms period has elapsed the TS_READ signal goes low, which causes the TS-Bias pin to become high impedance. During the next 100 ms period the TS voltage is monitored and compared to 100 mV. If the TS voltage is greater than 100 mV then a secondary device is driving the TS/CTRL pin and a CTRL = ‘1’ is detected. Figure 24. Timing Diagram for TS Detection Circuit Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 19 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com TS/CTRL Function: The TS-CTRL pin offers three functions: 1. NTC temperature monitoring, 2. Charge done indication, 3. Fault indication When NTC is connected between TS/CTRL pin and the GND, the NTC is function is allowed to operate. If the TS/CTRL pin is pulled to the battery voltage, the Rx is shutdown with the indication of a charge complete condition. If the TS-CTRL pin is pulled to GND, The Rx is shutdown with the indication of a fault. Thermal Protection The bq5105x includes a thermal shutdown protection. If the die temperature reaches TJ(OFF), the LDO is shut off to prevent any further power dissipation. WPC 1.1 Compatibility The bq5105x is a WPC 1.1 compatible device, In order to enable a Power Transmitter to monitor the power loss across the interface as one of the possible methods to limit the temperature rise of Foreign Objects, the bq51050B reports its Received Power to the Power Transmitter. The Received Power equals the power that is available from the output of the Power Receiver plus any power that is lost in producing that output power. For example, the power loss includes (but is not limited to) the power loss in the Secondary Coil and series resonant capacitor, the power loss in the Shielding of the Power Receiver, the power loss in the rectifier, the power loss in any post-regulation stage, and the eddy current loss in metal components or contacts within the Power Receiver. In WPC1.1 specification, foreign object detection (FOD) is enforced, that means the bq51050B will send received power information with known accuracy to the transmitter. WPC 1.1 defines Received Power is “the average amount of power that the Power Receiver receives through its Interface Surface, in the time window indicated in the Configuration Packet”. A Receiver will be certified as WPC 1.1 only after meeting following requirement The DUT (Device Under Test) is tested on a Reference Transmitter whose transmitted power is calibrated, the receiver must send a received power such that: 0 < (TX PWR) REF – (RX PWR out) DUT < 250mW This 250mW bias ensures that system will remain interoperable. WPC 1.1 Transmitter will be tested to see if they can detect reference Foreign Objects with a Reference receiver. WPC1.1 Specification will allow much more accurate sensing of Foreign Objects. A Transmitter can be certified as a WPC 1.1 only after meeting the following requirement- A Transmitter is tested to see if it can prevent some reference Foreign Objects (disc, coin, foil) from exceeding their threshold temperature (60°C, 80°C). Series and Parallel Resonant Capacitor Selection Shown in Figure 2, the capacitors C1 (series) and C2 (parallel) make up the dual resonant circuit with the receiver coil. These two capacitors must be sized correctly per the WPC v1.1 specification. Figure 25 illustrates the equivalent circuit of the dual resonant circuit: 20 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B bq51050B bq51051B www.ti.com SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 C1 Ls’ Figure 25. Dual Resonant Circuit with the Receiver Coil Section 4.2 (Power Receiver Design Requirements) in volume 1 of the WPC v1.1 specification highlights in detail the sizing requirements. To summarize, the receiver designer will be required take inductance measurements with a fixed test fixture. The test fixture is shown in Figure 26: Figure 26. WPC v1.1 Receiver Coil Test Fixture for the Inductance Measurement Ls’ The primary shield is to be 50 mm x 50 mm x 1 mm of Ferrite material PC44 from TDK Corp. The gap dZ is to be 3.4 mm. The receiver coil, as it will be placed in the final system (e.g. the back cover and battery must be included if the system calls for this), is to be placed on top of this surface and the inductance is to be measured at 1-V RMS and a frequency of 100 kHz. This measurement is termed Ls’. This measurement is termed Ls or the free-space inductance. Each capacitor can then be calculated using Equation 5: 1 C1 = (2p ´ ¦ s)2 ´ L 's C2 = 1 æ 1 ö (2p ´ ¦D )2 ´ ç L s ÷ C1 ø è (5) Where fS is 100 kHz +5/–10% and fD is 1 MHz ±10%. C1 must be chosen first prior to calculating C2. The quality factor must be greater than 77 and can be determined by Equation 6: 2p ´ ¦D ´ Ls Q= (6) R Where R is the DC resistance of the receiver coil. All other constants are defined above. Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B Submit Documentation Feedback 21 bq51050B bq51051B SLUSB42C – JULY 2012 – REVISED FEBRUARY 2013 www.ti.com REVISION HISTORY Changes from Original (August 2012) to Revision A Page • Changed bq51051B from product preview to production data ............................................................................................. 2 • Changed Regulated BAT(output) voltage ............................................................................................................................. 4 • Changed Recharge threshold ............................................................................................................................................... 5 • Deleted ITS-Bias-Max .................................................................................................................................................................. 5 • Changed VCOLD to VOC and values ........................................................................................................................................ 5 • Changed V45C values ............................................................................................................................................................ 5 • Changed V60C values ............................................................................................................................................................ 5 • Changed Figure 19 ............................................................................................................................................................. 16 Changes from Revision A (August 2012) to Revision B Page • Changed last features bullet from: 1.9 x 3.0mm WCSP and 4.5 x 3.5mm QFN Package Options to: Available in small WCSP and QFN packages .......................................................................................................................................... 1 • Changed Figure 1 and changed caption from: Wireless Power Consortium (WPC or Qi) Inductive Power Charging System, to: Typical System blocks shows bq5105xB used as a Wireless Power Li-Ion/Li-Pol Battery Charger ................. 1 • Added note: Visit ti.com/wirelesspower for product details and design resources ............................................................... 1 Changes from Revision B (September 2012) to Revision C • 22 Page First release of the full data sheet ........................................................................................................................................ 1 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: bq51050B bq51051B PACKAGE OPTION ADDENDUM www.ti.com 27-Feb-2013 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Qty Drawing Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) (4) BQ51050BRHLR ACTIVE QFN RHL 20 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ51050B BQ51050BRHLT ACTIVE QFN RHL 20 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ51050B BQ51050BYFPR ACTIVE DSBGA YFP 28 3000 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM BQ51050B BQ51050BYFPT ACTIVE DSBGA YFP 28 250 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM BQ51050B BQ51051BRHLR ACTIVE QFN RHL 20 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ51051B BQ51051BRHLT ACTIVE QFN RHL 20 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ51051B BQ51051BYFPR ACTIVE DSBGA YFP 28 3000 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM BQ51051B BQ51051BYFPT ACTIVE DSBGA YFP 28 250 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM BQ51051B (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com (4) 27-Feb-2013 Only one of markings shown within the brackets will appear on the physical device. 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Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 4-Mar-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device BQ51050BRHLR Package Package Pins Type Drawing QFN RHL 20 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 3000 330.0 12.4 3.8 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 4.8 1.6 8.0 12.0 Q1 BQ51050BRHLT QFN RHL 20 250 180.0 12.4 3.8 4.8 1.6 8.0 12.0 Q1 BQ51050BYFPR DSBGA YFP 28 3000 180.0 8.4 2.0 3.13 0.6 4.0 8.0 Q1 BQ51050BYFPT DSBGA YFP 28 250 180.0 8.4 2.0 3.13 0.6 4.0 8.0 Q1 BQ51051BRHLR QFN RHL 20 3000 330.0 12.4 3.8 4.8 1.6 8.0 12.0 Q1 BQ51051BRHLT QFN RHL 20 250 180.0 12.4 3.8 4.8 1.6 8.0 12.0 Q1 BQ51051BYFPR DSBGA YFP 28 3000 180.0 8.4 2.0 3.13 0.6 4.0 8.0 Q1 BQ51051BYFPT DSBGA YFP 28 250 180.0 8.4 2.0 3.13 0.6 4.0 8.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 4-Mar-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ51050BRHLR QFN RHL 20 3000 367.0 367.0 35.0 BQ51050BRHLT QFN RHL 20 250 210.0 185.0 35.0 BQ51050BYFPR DSBGA YFP 28 3000 210.0 185.0 35.0 BQ51050BYFPT DSBGA YFP 28 250 210.0 185.0 35.0 BQ51051BRHLR QFN RHL 20 3000 367.0 367.0 35.0 BQ51051BRHLT QFN RHL 20 250 210.0 185.0 35.0 BQ51051BYFPR DSBGA YFP 28 3000 210.0 185.0 35.0 BQ51051BYFPT DSBGA YFP 28 250 210.0 185.0 35.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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