SLUSB96A November   2012  – December 2015

 

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
      1. 7.1.1 Fundamentals
      2. 7.1.2 Wireless Power Consortium (WPC)
      3. 7.1.3 Power Transfer
      4. 7.1.4 Communication
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Capacitor Selection
      2. 7.3.2  A6 Coil Specification
      3. 7.3.3  Option Select Pins
      4. 7.3.4  LED Modes
      5. 7.3.5  Parasitic Metal Object Detect (PMOD) and Foreign Object Detection (FOD)
      6. 7.3.6  Shut Down by Thermal Sensor or Trigger
      7. 7.3.7  Fault Handling and Indication
      8. 7.3.8  Power Transfer Start Signal
      9. 7.3.9  Power-On Reset
      10. 7.3.10 External Reset, RESET Pin
      11. 7.3.11 Trickle Charge and CS100
      12. 7.3.12 Current Monitoring Requirements
      13. 7.3.13 Overcurrent Protection
      14. 7.3.14 MSP430G2101 Low Power Supervisor
      15. 7.3.15 All Unused Pins
  8. 8 Application and Implementation
    1. 8.1 Typical Application
      1. 8.1.1 Detailed Design Procedure
        1. 8.1.1.1 Input Regulator
        2. 8.1.1.2 Power Trains
        3. 8.1.1.3 Signal Processing Components
        4. 8.1.1.4 Low-Power Supervisor
        5. 8.1.1.5 Disabling Low-Power Supervisor Mode
        6. 8.1.1.6 Input Power Requirements
    2. 8.2 System Examples
  9. 9 Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Community Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

RGZ Package
48-Pin VQFN
Top View
bq500410A pin_lusb96.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
AD03 3 I This pin can be either connected to GND or left open. Connecting to GND can improve layout grounding.
AD08 4 I Reserved. Connect to 3.3-V supply.
ADCREF 48 I External reference voltage input. Connect this input to GND.
BPCAP 35 — Bypass capacitor for internal 1.8-V core regulator. Connect bypass capacitor to GND.
BUZ_AC 23 O AC buzzer output. A 400-ms, 4-kHz AC pulse train when charging begins.
BUZ_DC 24 O DC buzzer output. A 400-ms DC pulse when charging begins. This could also be connected to an LED through 470-Ω resistor.
COIL 1.1 15 O Enables the first coil drive train and COMM signal selector.
COIL 1.2 16 O Enables the second coil drive train and COMM signal selector.
COIL 1.3 17 O Enables the third coil drive train and COMM signal selector.
COIL_PEAK 1 I Input from peak detect circuit.
COMM_A- 38 I Digital demodulation inverting input A, connect parallel to input B-.
COMM_A+ 37 I Digital demodulation noninverting input A, connect parallel to input B+.
COMM_B- 40 I Digital demodulation inverting input B, connect parallel to input A-.
COMM_B+ 39 I Digital demodulation noninverting input B, connect parallel to input A+.
DOUT_RX 22 I Reserved, leave this pin open.
DOUT_TX 21 I Reserved, leave this pin open.
DPWM_A 12 O PWM Output to half bridge driver. Switching dead times must be externally generated.
EPAD 49 — Flood with copper GND plane and stitch vias to PCB internal GND plane.
FOD 6 O FOD read pin. Leave open unless PMOD and FOD thresholds need to be different. It controls the FOD threshold resistor read at startup.
GND 32 — GND
GND 36 — GND
GND 47 — GND
I_SENSE 42 I Transmitter input current, used for parasitic loss calculations. Use 20-mΩ sense resistor and A=50 gain current sense amp.
LED_MODE 44 I LED Mode Select.
LOSS_THR 43 I Input to program foreign metal object detection (FOD) threshold.
MSP_CLK 18 I/O MSP430 JTAG_CLK, SPI_CLK. Used for boot loading the MSP430 supervisor.
MSP_MISO/LED2 8 I A dual function pin. MSP – MISO provided serial communication to the external supervisor. LED2 -- If external MSP430 is not used, connect to a (red) LED through 470-Ω resistor for status indication. Grounding pin 25 determines this pin's function.
MSP_MOSI/LPWR_EN 25 I/O MSP-TDI, SPI-MOSI, Low Standby Power Supervisor Enable. Connect to GND if separate MSP430 low power supervisor is not used.
MSP_RDY 26 I/O MSP_RDY, MSP430 Programmed Indication.
MSP_RST/LED1 7 I A dual function pin. MSP – RST provides serial communication to the external supervisor. LED1 -- If external MSP430 is not used, connect to a (green) LED through 470-Ω resistor for status indication. Grounding pin 25 determines this pin's function.
MSP_SYNC 14 O MSP SPI_SYNC, If external MSP430 is not used, leave this pin open.
MSP_TEST 9 I MSP – Test, If external MSP430 is not used, leave this pin open.
PMB_CLK 10 I/O 10-kΩ pullup resistor to 3.3-V supply. I2C/PMBus is for factory use only.
PMB_DATA 11 I/O 10-kΩ pullup resistor to 3.3-V supply. I2C/PMBus is for factory use only.
PMOD 13 O PMOD read pin. Leave open unless PMOD and FOD thresholds need to be different. It controls the PMOD threshold resistor read at startup.
RESERVED 19 O Reserved, leave this pin open.
RESERVED 20 I Reserved, connect to GND.
RESERVED 27 I/O Reserved, leave this pin open.
RESERVED 28 I/O Reserved, leave this pin open.
RESERVED 29 I/O Reserved, leave this pin open.
RESERVED 30 I/O Reserved, leave this pin open.
RESERVED 41 I Reserved, leave this pin open.
RESERVED 31 I/O Reserved, connect 10-kΩ pulldown resistor to GND. Do not leave open.
RESET 5 I Device reset. Use 10-kΩ to 100-kΩ pullup resistor to 3.3-V supply.
T_SENSE 2 I Sensor input. Device shuts down when below 1 V. If not used, keep above 1 V by simply connecting to 3.3-V supply.
V33A 34 — Analog 3.3-V supply. This pin can be derived from V33D supply, decouple with 22-Ω resistor and additional bypass capacitors.
V33D 33 — Digital Core 3.3-V supply. Be sure to decouple with bypass capacitors as close to the part as possible.
V_IN 46 I System input voltage selector. Connect this input to GND for 12-V operation.
V_SENSE 45 I Transmitter power train input voltage, used for FOD and Loss calculations. Voltage sample point should be after current input sense resistor. Use 76.8-kΩ to 10-kΩ divider to minimize quiescent loss.