Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - power management - special purpose 1 A DSBGA 28 (2.79x1.59)

AC to DC

Voltage

Conditioning

Controller

RectificationDrivers RectificationDrivers Load

Controller

V/I

Sense

Power

Transmitter Receiver

bqTESLA150LP: Receiver Integration 1/5 of the Area Savings

bq5101x

bq500210

Communication

bq51011

bq51013

www.ti.com

SLVSAT9D –APRIL 2011–REVISED AUGUST 2012

INTEGRATED WIRELESS POWER SUPPLY RECEIVER,

Qi (WIRELESS POWER CONSORTIUM) COMPLIANT

Check for Samples: bq51011, bq51013

FEATURES

• Integrated Wireless Power Receiver Solution • Digital Cameras

with a 5V Regulated Supply

• Portable Media Players

– 93% Overall Peak AC-DC Efficiency

• Hand-held Devices

– Full Synchronous Rectifier

DESCRIPTION

– WPC v1.0 Compliant Communication

The bq5101x is an advanced, integrated, receiver IC

Control

for wireless power transfer in portable applications.

– Output Voltage Conditioning

The device provides the AC/DC power conversion

– Only IC Required Between RX coil and 5V

while integrating the digital control required to comply

DC Output Voltage

with the Qi v1.0 communication protocol. Together

with the bq500210 transmitter controller, the bq5101x

• Dynamic Rectifier Control for Improved Load

enables a complete contact-less power transfer

Transient Response

system for a wireless power supply solution. By

• Supports 20-V Maximum Input

utilizing near-field inductive power transfer, the

• Low-power Dissipative Rectifier Overvoltage

receiver coil embedded in the portable device

Clamp (V

OVP

= 15V)

receives the power transmitted by the transmitter coil

via mutually coupled inductors. The AC signal from

• Thermal Shutdown

the receiver coil is then rectified and regulated to be

• Single NTC/Control Pin for Optimal Safety and

used as a power supply for down-system electronics.

I/O Between Host

Global feedback is established from the secondary to

• Stand-alone Digital Controller

the transmitter in order to stabilize the power transfer

process via back-scatter modulation. This feedback is

• 1.9 x 3mm DSBG or 4.5 x 3.5mm QFN Package

established by using the Qi v1.0 communication

protocol supporting up to 5W applications.

APPLICATIONS

The device integrates a low-impedance full

• WPC Compliant Receivers

synchronous rectifier, low-dropout regulator, digital

• Cell Phones, Smart Phones

control, and accurate voltage and current loops. The

• Headsets

entire power stage (rectifier and LDO) utilize low

resistive NMOS FET’s to ensures high efficiency and

low power dissipation.

Figure 1. Wireless Power Consortium (WPC or Qi) Inductive Power System

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.

Summary of content (31 pages)

PAGE 1
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 INTEGRATED WIRELESS POWER SUPPLY RECEIVER, Qi (WIRELESS POWER CONSORTIUM) COMPLIANT Check for Samples: bq51011, bq51013 FEATURES 1 • • • • • • • • Integrated Wireless Power Receiver Solution with a 5V Regulated Supply – 93% Overall Peak AC-DC Efficiency – Full Synchronous Rectifier – WPC v1.
PAGE 2
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 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.
PAGE 3
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) PARAMETER PINS MIN Input voltage range, VIN RECT 4 Input current, IIN RECT Output current, IOUT OUT 1.5 A Sink current, IAD-EN AD-EN 1 mA COMM sink current, ICOMM COMM 500 mA 125 ºC Junction Temperature, TJ 0 MAX UNITS 10 V 1.
PAGE 4
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com System Load Q1 USB or AC Adapter Input bq5101x AD-EN AD OUT C COMM1 C4 COMM1 C5 C BOOT1 D1 BOOT1 RECT C1 AC1 COIL VTSB C3 R4 R2 C2 TS/CTRL AC2 C BOOT2 NTC HOST COMM2 CHG CLAMP2 EN1 Bi-State CLAMP1 EN2 Bi-State CCOMM2 C CLAMP2 CCLAMP1 R3 BOOT2 ILIM 3-State PGND R1 Figure 3.
PAGE 5
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range, 0°C to 125°C (unless otherwise noted) PARAMETER VRECT-REV TEST CONDITIONS Rectifier reverse voltage protection when a supply is present at VOUT MIN TYP MAX UNIT VRECT-REV = VOUT - VRECT, VOUT = 10V 9 8 V ILOAD = 0mA, 0°C ≤ TJ ≤ 85°C 8 10 mA ILOAD = 300mA, 0°C ≤ TJ ≤ 85°C 2 2.
PAGE 6
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.
PAGE 7
bq51011 bq51013 www.ti.
PAGE 8
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.
PAGE 9
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 PIN FUNCTIONS (continued) NAME YFF ILIM G1 AD G4 AD-EN F3 RHL I/O DESCRIPTION I/O 12 Programming pin for the over current limit. Connect external resistor to VSS. Size RILIM with the following equation: RILIM = 300 / I( max) where I(max) is the desired current limit for the power supply. 9 I Connect this pin to the wired adapter input.
PAGE 10
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) 1.2 7.5 Falling Rising RILIM=250 RILIM=400 RILIM=700 RILIM=300 1.1 1.0 7.0 Current Limit (A) Rectifier Voltage (V) 0.9 6.5 6.0 0.8 0.7 0.6 0.5 0.4 5.5 0.3 0.2 5.0 0.2 0.4 0.6 Load Current (A) 0.8 0.1 1.0 1.0 Figure 6. VRECT vs. ILOAD 2.0 3.0 Output Voltage (V) 4.0 5.0 Figure 7. VOUT Sweep (I-V Curve)(1) 100.0 5.01 90.0 5.00 Output Ripple (mV) Output Voltage (V) 80.0 4.
PAGE 11
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 TYPICAL CHARACTERISTICS (continued) 5.004 Vout (V) 5.002 5.000 4.998 0 20 40 60 80 Temperature (°C) 100 120 Figure 10. VOUT vs Temperature Figure 11. 1A Instantaneous Load Step(2) VRECT VOUT Figure 12. 1A Instantaneous Load Dump(2) Figure 13.
PAGE 12
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) VRECT VRECT VOUT VOUT Figure 14. 1A Load Dump Full System Response Figure 15. Rectifier Overvoltage Clamp (fop = 110kHz) VTS/CTRL VRECT VRECT VOUT Figure 16. TS Fault 12 Figure 17.
PAGE 13
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 TYPICAL CHARACTERISTICS (continued) VAD VRECT VRECT VOUT Figure 18. Adapter Insertion (VAD = 10V) Illustrating BreakBefore-Make Operation IOUT Figure 19. On the Go Enabled (VOTG = 3.5V)(3) IOUT VRECT VRECT VOUT VOUT Figure 20. bq51013 Typical Startup with a 1A System Load Figure 21. bq51011 Step Response with VOUT = 4.
PAGE 14
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) IOUT VRECT VRECT VOUT VOUT Figure 23. bq51011 Output Current Transition (ILOAD < IILIM ≥ ILOAD = IILIM) lIlustrating Dynamic Communication Current Limit Figure 22. bq51011 Output Voltage Transition (VOUT = 4.8V -> 3.5V) Illustrating VRECT-TRACK (1) Curves illustrates the resulting ILIM current by sweeping the output voltage at different RILIM settings.
PAGE 15
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 A Brief Description of the Wireless System: A wireless system consists of a charging pad (transmitter or primary) and the secondary-side equipment (receiver or secondary). There are coils in the charging pad and in the secondary equipment which are magnetically coupled to each other when the equipment is placed on the portable device. Power is then transferred from the transmitter to the receiver via coupled inductors (e.g.
PAGE 16
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com Using the bq5101x as a Wireless Power Supply: (See Figure 3) Figure 3 is the schematic of a system which uses the bq5101x as power supply while power multiplexing the wired (adapter) port. When the system shown in Figure 3 is placed on the charging pad, the receiver coil is inductively coupled to the magnetic flux generated by the coil in the charging pad which consequently induces a voltage in the receiver coil.
PAGE 17
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 The EN1 and EN2 pins include internal 200kΩ pull-down resistors, so that if these pins are not connected bq5101x defaults to AD-EN control mode. However, these pins can be pulled high to enable other operating modes as described in Table 1: Table 1. EN1 EN2 0 0 Adapter control enabled.
PAGE 18
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com Communication bq5101x provides two identical, integrated communication FETs which are connected to the pins COMM1 and COMM2. These FETs are used for modulating the secondary load current which allows bq5101x to communicate error control and configuration information to the transmitter. Figure 25 below shows how the COMM pins can be used for resistive load modulation. Each COMM pin can handle at most a 24Ω communication resistor.
PAGE 19
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 AC1 AC2 22nF 22nF COMM1 COMM2 COMM_DRIVE Figure 26. Capacitive Load Modulation Synchronous Rectification The bq5101x 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 backgates of the diodes are configured to be the rectifier when the synchronous rectifier is disabled.
PAGE 20
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com Dynamic Communication Current Limit (Dynamic ILIM) The bq51011 employs the dynamic communication current limit feature in order to enable the communication current limit only when the power supply is operating in current limit mode (IOUT = IILIM). This is illustrated in Figure 23 where the output current is transitioned from IOUT < IILIM to IOUT = IILIM.
PAGE 21
bq51011 bq51013 www.ti.com • SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 R3 = 13.98kΩ where: • TCOLD = 0°C • THOT = 60°C • β = 4500 • RO = 10kΩ The plot of the percent VTSB vs. temperature is shown in Figure 28: 55 50 Vtsb Ratio (%) 45 40 35 30 25 20 0 10 20 30 40 Temperature (°C) 50 60 Figure 28. Example Solution for an NTC resistor with RO = 10KΩ and β = 4500 Figure 29 illustrates the periodic biasing scheme used for measuring the TS state.
PAGE 22
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com Thermal Protection The bq5101x includes a thermal shutdown protection. If the die temperature reaches TJ(OFF), the LDO is shut off to prevent any further power dissipation. 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 v1.0 specification.
PAGE 23
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 2 C1 = éê(fS × 2p) × L'S ùú ë û -1 é 1ù 2 ú C2 = ê(fD × 2p) × LS êë C1úû -1 (4) 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 5: Q= 2p × fD × LS R (5) where R is the DC resistance of the receiver coil. All other constants are defined above.
PAGE 24
bq51011 bq51013 SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 www.ti.com An example load-line analysis for the Vishay IWAS-4832FF-50 receiver coil is shown in Figure 33: Fs=175 Fs=160 Fs=150 Fs=140 Fs=135 Fs=130 Fs=125 Rectified Voltage (V) 10 8 6 4 0.2 Ping Voltage 0.4 0.6 Load Current (A) 1A Load Step Droop 0.8 1.0 1A Load Operating Point Figure 33.
PAGE 25
bq51011 bq51013 www.ti.com SLVSAT9D – APRIL 2011 – REVISED AUGUST 2012 REVISION HISTORY Changes from Original (April 2011) to Revision A Page • Added device numbers bq51010 and bq51011 .................................................................................................................... 1 • Added Figure 20 through Figure 23 ......................................................................................................................................
PAGE 26
PACKAGE OPTION ADDENDUM www.ti.
PAGE 27
PACKAGE OPTION ADDENDUM www.ti.com 11-Jun-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
PAGE 28
PACKAGE MATERIALS INFORMATION www.ti.com 24-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) BQ51011YFFR DSBGA YFF 28 3000 180.0 8.4 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 2.01 3.14 0.81 4.0 8.0 Q1 BQ51011YFFT DSBGA YFF 28 250 180.0 8.4 2.01 3.14 0.81 4.0 8.0 Q1 BQ51013YFFR DSBGA YFF 28 3000 180.0 8.4 2.01 3.14 0.81 4.0 8.
PAGE 29
PACKAGE MATERIALS INFORMATION www.ti.com 24-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) BQ51011YFFR DSBGA YFF 28 3000 182.0 182.0 17.0 BQ51011YFFT DSBGA YFF 28 250 182.0 182.0 17.0 BQ51013YFFR DSBGA YFF 28 3000 182.0 182.0 17.0 BQ51013YFFT DSBGA YFF 28 250 182.0 182.0 17.
PAGE 30
D: Max = 3.036 mm, Min =2.976 mm E: Max = 1.913 mm, Min =1.
PAGE 31
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. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.