bq500210
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SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 2012
Qi Compliant Wireless Power Transmitter Manager
Check for Samples: bq500210
FEATURES
APPLICATIONS
•
•
1
•
•
•
•
•
•
Intelligent Control of the Power Transfer
between Base Station and Mobile Device
Conforms to the Wireless Power Consortium
(WPC) Wireless Power Transfer 1.0.2
Specification
Digital Demodulation Significantly Simplifies
Solution Over bq500110
Improved Parasitic Metal Object Detection
(PMOD) Promotes Safety During Wireless
Power Transfer
Enhanced Charge Status Indicator
Operating Modes Status Indicators
– Standby
– Power Transfer (visual and audio)
– Charge Complete
– Fault
Over Temperature Protection
•
•
WPC 1.0.2 Compliant Wireless Chargers for:
– Mobile and Smart Phones
– MP3 Players
– Global Positioning Devices
– Digital Cameras
Other Wireless Power Transmitters in:
– Cars and Other Vehicles
– Hermetically Sealed Devices, Tools, and
Appliances
– Furniture Built-In Wireless Chargers
– Toy Power Supplies and Chargers
See www.ti.com/wirelesspower for More
Information on TI's Wireless Charging
Solutions
DESCRIPTION
The bq500210 is a second generation Wireless Power dedicated digital controller that integrates the logic
functions required to control Wireless Power Transfer in a single channel WPC compliant contactless charging
base station. The bq500210 is an intelligent device that periodically pings the surrounding environment for
available devices to be powered, monitors all communication from the device being wirelessly powered, and
adjusts power applied to the transmitter coil per feedback received from the powered device. The bq500210 also
manages the fault conditions associated with the power transfer and controls the operating modes status
indicator. The bq500210 supports improved Parasitic Metal Object Detection (PMOD). The controller in real time
analyzes the efficiency of the established power transfer using Rectified Power Packets and protects itself and
the power receiver from excessive power loss and heat associated with parasitic metal objects placed in the
power transfer path.
The bq500210 is available in an area saving 48-pin, 7mm x 7mm QFN package and operates over a temperature
range from –40°C to 110°C.
Power
Power
Stage
AC-DC
Rectification
Voltage
Conditioning
Load
Communication
bq500210
Controller
bq51013
Transmitter
Receiver
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 © 2011–2012, Texas Instruments Incorporated
bq500210
SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 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.
ORDERING INFORMATION (1)
OPERATING TEMPERATURE
RANGE, TA
ORDERABLE PART NUMBER
PIN COUNT
SUPPLY
PACKAGE
TOP SIDE
MARKING
bq500210RGZR
48 pin
Reel of 2500
QFN
bq500210
bq500210RGZT
48 pin
Reel of 250
QFN
bq500210
-40°C to 110°C
(1)
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS (1)
over operating free-air temperature range (unless otherwise noted)
VALUE
UNIT
MIN
MAX
Voltage applied at V33D to DGND
–0.3
3.8
V
Voltage applied at V33A to AGND
–0.3
3.8
V
Voltage applied to any pin
(2)
Storage temperature,TSTG
(1)
(2)
–0.3
3.8
V
–40
150
°C
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 referenced to GND.
THERMAL INFORMATION
bq500210
THERMAL METRIC (1)
RGZ
UNITS
48 PINS
θJA
Junction-to-ambient thermal resistance (2)
θJC(top)
Junction-to-case(top) thermal resistance
θJB
Junction-to-board thermal resistance
28.4
(3)
13.9
(4)
5.3
(5)
ψJT
Junction-to-top characterization parameter
ψJB
Junction-to-board characterization parameter
θJC(bottom)
Junction-to-case(bottom) thermal resistance
(1)
(2)
(3)
(4)
(5)
(6)
(7)
2
0.2
(6)
(7)
°C/W
5.2
1.4
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
The junction-to-ambient thermal resistance under natural convection is obtained in a simulation on a JEDEC-standard, high-K board, as
specified in JESD51-7, in an environment described in JESD51-2a.
The junction-to-case (top) thermal resistance is obtained by simulating a cold plate test on the package top. No specific JEDECstandard test exists, but a close description can be found in the ANSI SEMI standard G30-88.
The junction-to-board thermal resistance is obtained by simulating in an environment with a ring cold plate fixture to control the PCB
temperature, as described in JESD51-8.
The junction-to-top characterization parameter, ψJT, estimates the junction temperature of a device in a real system and is extracted
from the simulation data for obtaining θJA, using a procedure described in JESD51-2a (sections 6 and 7).
The junction-to-board characterization parameter, ψJB, estimates the junction temperature of a device in a real system and is extracted
from the simulation data for obtaining θJA , using a procedure described in JESD51-2a (sections 6 and 7).
The junction-to-case (bottom) thermal resistance is obtained by simulating a cold plate test on the exposed (power) pad. No specific
JEDEC standard test exists, but a close description can be found in the ANSI SEMI standard G30-88.
Spacer
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RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX
V
Supply voltage during operation, V33D, V33A
3.0
TA
Operating free-air temperature range
–40
TJ
Junction temperature
3.3
UNIT
3.6
V
125
°C
125
°C
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
SUPPLY CURRENT
IV33A
V33A = 3.3 V
8
15
IV33D
V33D = 3.3 V
42
55
V33D = 3.3 V while storing configuration
parameters in flash memory
53
65
3.3
3.6
4
4.6
Supply current
IV33D
mA
INTERNAL REGULATOR CONTROLLER INPUTS/OUTPUTS
V33
3.3-V linear regulator
V33FB
3.3-V linear regulator feedback
IV33FB
Series pass base drive
Beta
Series NPN pass device
Emitter of NPN transistor
3.25
VIN = 12 V; current into V33FB pin
10
V
mA
40
EXTERNALLY SUPPLIED 3.3 V POWER
V33D
Digital 3.3-V power
TA = 25°C
3
3.6
V
V33A
Analog 3.3-V power
TA = 25°C
3
3.6
V
V33 slew rate
V33 slew rate between 2.3V and 2.9V,
V33A = V33D
V33Slew
0.25
V/ms
MODULATION AMPLIFIER INPUTS EAP-A, EAN-A, EAP-B, EAN-B
VCM
Common mode voltage each pin
EAP-EAN
Modulation voltage digital resolution
–0.15
REA
Input Impedance
Ground reference
0.5
IOFFSET
Input offset current
1 kΩ source impedance
–5
1.631
1
1.5
V
mV
3
MΩ
5
µA
ANALOG INPUTS V_IN, I_IN, TEMP_IN, I_COIL, LED_MODE, PMOD_THR
VADDR_OPEN
Voltage indicating open pin
LED_MODE, PMOD_THR open
VADDR_SHORT
Voltage indicating pin shorted to GND
LED_MODE, PMOD_THR shorted to ground
VADC_RANGE
Measurement range for voltage monitoring
Inputs: V_IN, I_IN, TEMP_IN, I_COIL
INL
ADC integral nonlinearity
Ilkg
Input leakage current
3V applied to pin
RIN
Input impedance
Ground reference
CIN
Input capacitance
2.37
V
0.36
V
0
2.5
V
-2.5
2.5
mV
100
8
nA
MΩ
10
pF
DGND1
+ 0.25
V
DIGITAL INPUTS/OUTPUTS
(1)
VOL
Low-level output voltage
IOL = 6 mA
, V33D = 3 V
VOH
High-level output voltage
IOH = -6 mA
VIH
High-level input voltage
V33D = 3V
VIL
Low-level input voltage
V33D = 3.5 V
IOH(MAX)
Output high source current
4
mA
IOL(MAX)
Output low sink current
4
mA
(2)
, V33D = 3 V
V33D
- 0.6V
2.1
V
3.6
1.4
V
V
SYSTEM PERFORMANCE
VRESET
Voltage where device comes out of reset
V33D Pin
tRESET
Pulse width needed for reset
RESET pin
FSW
Switching Frequency
(1)
(2)
2.3
2.4
2
110
V
µs
205
kHz
The maximum IOL, for all outputs combined, should not exceed 12 mA to hold the maximum voltage drop specified.
The maximum IOH, for all outputs combined, should not exceed 48 mA to hold the maximum voltage drop specified.
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ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
tdetect
Time to detect presence of device requesting
power
tretention
Retention of configuration parameters
TJ = 25°C
100
Years
Write_Cycles
Number of nonvolatile erase/write cycles
TJ = 25°C
20
K cycles
0.6
sec
DEVICE INFORMATION
Functional Block Diagram
bq500210
COMM_A+
COMM_ACOMM_B+
COMM_B-
LED Control /
Low Power
Supervisor
Interface
MSP430 CNTL
LED DRIVE
Digital
Demodulation
PWM-A
PWM
PWM-B (EN)
mController
Buzzer
Control
12-bit
ADC
TEMP_INT
Low Power
Control
Debug/Programming
V_IN
I_OUT
TEMP_EXT
BUZ_AC
BUZ_DC
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
I2C
(PMBUS)
PMB_DATA
PMB_CLK
SLEEP RESET
4
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SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 2012
REFIN
AGND
V_IN
AIN7
LED_M ODE
PMOD_THR
I_IN
V33FB
COMM_B-
COMM_B+
COMM_A-
COMM_A+
48
47
46
45
44
43
42
41
40
39
38
37
48-PIN QFN PACKAGE
(TOP VIEW)
AIN5
1
36
AGND
T_SENSE
2
35
BPCAP
AIN3
3
34
V33A
AIN8
4
33
V33D
RESET
5
32
DGND
SLEEP
6
31
RESERVED
30
RESERVED
bq500210
23
24
BUZ_DC
MSP_MOSI/LPWR_EN
BUZ_AC
25
22
12
DRV_CFG
DPWM _A
21
MSP_RDY
DOUT_TX
26
20
11
PM B_CTRL
PMB _DATA
19
RESERVED
PMB_ALRT
27
18
10
M SP_TCK/ CLK
PMB _CLK
17
RESERVED
DOUT_4B
28
16
9
DOUT_4A
MSP_TEST
15
RESERVED
DOUT_2B
29
14
8
M SP_SYNC
MSP_MISO/LED_B
13
7
DPMB_B
MSP_RST/LED_A
PIN FUNCTIONS
PIN
NO.
NAME
I/O
DESCRIPTION
1
AIN5
I
Connect this pin to GND
2
T_SENSE
I
Thermal Sensor Input
3
AIN3
I
Connect this pin to GND
4
AIN8
I
Connect this pin to GND
5
RESET
I
Device reset
6
SLEEP
O
Low-power mode start logic output
7
MSP_RST/LED_A
I
MSP – Reset, LED-A
8
MSP_MISO/LED_B
I
MSP – TMS, SPI-MISO, LED-B
9
MSP_TEST
I
MSP – Test
10
PMB_CLK
I/O
PMBus Clock
11
PMB_DATA
I/O
PMBus Data
12
DPWM_A
O
PWM Output A
13
DPMB_B
O
PWM Output B
14
MSP_SYNC
O
MSP SPI_SYNC
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PIN FUNCTIONS (continued)
PIN
NO.
6
NAME
I/O
DESCRIPTION
15
DOUT_2B
O
Optional Logic Output 2B. Leave this pin floating.
16
DOUT_4A
O
Optional Logic Output 4A. Leave this pin floating.
17
DOUT_4B
O
Optional Logic Output 4B. Leave this pin floating.
18
MSP_TCK/CLK
I/O
Disable Diagnostic Output. Leave this pin floating to inhibit diagnostic.
19
PMB_ALERT
O
PMBus Interface
20
PMB_CTRL
I
PMBus Interface
21
DOUT_TX
I
Leave this pin floating
22
DRV_CFG
I
Pull this input to V33D
23
BUZ_AC
O
AC Buzzer Output
24
BUZ_DC
O
DC Buzzer Output
25
MSP_MOSI/LPWR_EN
I/O
MSP-TDI, SPI-MOSI, Low Power Enable
26
MSP_RDY
I/O
MSP-TDO, Programmed Indicator
27
RESERVED
I/O
Reserved, for factory use only
28
RESERVED
I/O
Reserved, for factory use only
29
RESERVED
I/O
Reserved, for factory use only
30
RESERVED
I/O
Reserved, for factory use only
31
RESERVED
I/O
Reserved, for factory use only
32
DGND
—
Digital GND
33
V33D
—
Digital Core 3.3V Supply
34
V33A
—
Analog 3.3V Supply
35
BPCAP
—
Bypass Capacitor Connect Pin
36
AGND
—
Analog GND
37
COMM_A+
I
Digital demodulation noninverting input A
38
COMM_A-
I
Digital demodulation inverting input A
39
COMM_B+
I
Digital demodulation noninverting input B
40
COMM_B-
I
Digital demodulation inverting input B
41
V33FB
I
3.3V Linear-Regulator Feedback Input. Leave this pin floating.
42
I_IN
I
Transmitter Input Current
43
PMOD_THR
I
Input to Program Metal Object Detection Threshold
44
LED_MODE
I
Input to Select LED Mode
45
AIN7
I
Reserved Analog Input. Connect this pin to GND.
46
V_IN
I
Transmitter Input Voltage
47
AGND
—
48
REFIN
I
Analog GND
External Reference Voltage Input. Connect this Input to AGND.
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TYPICAL CHARACTERISTICS
SPACER
EFFICIENCY
vs
RECEIVER LOAD CURRENT
PMOD THRESHOLD
vs
OUTPUT POWER
80
1.4
RPMOD = 64.9 kW
1.2
75
RPMOD = 75 kW
RPMOD = 56.2 kW
Rectifier Loading - W
1
Efficiency - %
70
65
60
55
50
100
0.8
0.6
0.4
0.2
300
500
700
900
RL - Load Current - mA
1100
RPMOD = 48.7 kW
RPMOD = 0 kW
RPMOD = 42.2 kW
0
0
Figure 1.
1
2
3
4
PO - Output Power - W
5
6
Figure 2.
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FUNCTIONAL OVERVIEW
The typical Wireless Power Transfer System consists of primary and secondary coils that are positioned against
each other in a way to maximize mutual coupling of their electromagnetic fields. Both coils have ferrite shields as
part of their structures to even further maximize field coupling. The primary coil is excited with the switching
waveform of the transmitter power driver that gets its power from an AC-DC wall adapter. The secondary coil is
connected to the rectifier that can either directly interface the battery or can have an electronic charger or postregulator connected to its output. The capacitors in series with the coils are tuned to create resonance in the
system. The system being in resonance facilitates better energy transfer compared to inductive transfer. Power
transfer in the resonant system can also be easily controlled with the variable frequency control approach. To
limit operating frequency variation the bq500210 uses both frequency and PWM methods to control power
transfer. When the operating frequency approaches a 205kHz limit and the receiver still commands lower power,
the bq500210 will reduce the PWM cycle in discrete steps to maintain the output in regulation.
The rectifier output voltage is monitored by the secondary side microcontroller that generates signals to control
the modulation circuit to pass coded information from the secondary side to the primary side. The coded
information is organized into information packets that have Preamble bytes, Header bytes, message bytes and
Checksum bytes. Per the WPC specification, information packets can be related to Identification, Configuration,
Control Error, Rectified Power, Charge Status, and End of Power Transfer information. For detailed information
on
the
WPC
specification,
visit
the
Wireless
Power
Consortium
website
at
http://www.wirelesspowerconsortium.com/.
There are two ways the coupled electromagnetic field can be manipulated to achieve information transfer from
the secondary side to the primary side. With the resistive modulation approach shown in Figure 3, the
communication resistor periodically loads the rectifier output changing system Q factor, and as a result the value
of the voltage on the primary side coil. With the capacitive modulation approach shown in Figure 4, a pair of
communication capacitors are periodically connected to the receiver coil network. These extra capacitance
application changes slightly the resonance frequency of the system and its response on the current operating
frequency, which in turn leads to coil voltage variation on the primary side.
With both modulation techniques primary side coil waveform variations are detected with a Digital Demodulation
algorithm in the bq500210 to restore the content of the information packets and adjust controls to the transmitter.
Rectifier
Receiver Coil
Receiver
Capacitor
Amax
Modulation
Resitor
Operating state at logic “0”
A(0)
Operating state at logic “1”
A(1)
Comm
Fsw
a)
F, kHz
b)
Figure 3. Resistive Modulation Circuit
8
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Rectifier
Receiver Coil
Receiver
Capacitor
Modulation
Capacitors
Amax
Comm
A(0)
Operating state at logic “ 0”
A(1)
Operating state at logic “ 1”
Fsw
F, kHz
Fo(1) < Fo(0)
a)
b)
Figure 4. Capacitive Modulation Circuit
The bq500210 is a second generation wireless power dedicated transmitter controller that simplifies integration of
wireless power technology into consumer electronics, such as digital cameras, smart phones, MP3 players, and
global positioning systems, along with infrastructure applications such as furniture and cars.
The bq500210 is a specialized digital power microcontroller that controls WPC A1, single coil, transmitter
functions such as analog ping, digital ping, variable frequency output power control, parasitic metal object
detection, over temperature protection of the transmitter top surface, and indication of the transmitter operating
states.
The bq500210 digital demodulation inputs receive scaled down voltages from the transmitter resonant
components. The digital demodulation algorithm is a combination of several digital signal processing techniques
that decodes information packets sent by the power receiving device and provides necessary changes to power
drive signals facilitating closed loop regulation. The controller analog inputs monitor input DC voltage, input
current, and the thermal protection input. These analog inputs support monitoring and protective functions of the
controller.
The bq500210 controls two LEDs to indicate transmitter operating and fault states. Having the LEDs connected
directly to the controller simplifies the transmitter electrical schematic and provides a cost effective solution.
Option Select Pins
Two pins (43, 44) in the bq500210 are allocated to program the PMOD mode and the LED mode of the device.
At power-up, a bias current is applied to pins LED_MODE and PMOD_THR and the resulting voltage measured
in order to identify the value of the attached programming resistor. The values of the operating parameters set by
these pins are determined using Option Select Bins. For LED_MODE, the selected bin determines the LED
behavior based on LED Modes; for the PMOD_THR, the selected bin sets a threshold used for parasitic metal
object detection (see Metal Object Detection (PMOD) section).
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V33
LED_MODE
PMOD_THR
bq500210
10 mA
IBIAS
Resistors
to set
options
To 12 -bit ADC
Figure 5. Option Programming
Table 1. Option Select Bins
BIN NUMBER
RESISTANCE
(kΩ)
LED OPTION
PMOD
THRESHOLD
(mW) (1)
0
GND
0
500
1
42.2
1
600
2
48.7
2
700
3
56.2
3
800
4
64.9
4
900
5
75.0
5
1000
6
86.6
6
1100
7
100
7
1200
8
115
8
1300
9
133
9
1400
10
154
10
1500
11
178
11
1600
12
205
12
1700
13
open
13
OFF
(1)
Threshold numbers are approximate. See Figure 2.
LED Modes
The bq500210 can directly control two LED outputs (pins 7 and 8). They are driven based on one of the
selectable modes. The resistor connected between pin 44 and GND selects one of the desired LED indication
schemes presented in Table 2.
10
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Table 2. LED Modes
LED
Control
Option
LED
Selection
Resistor
0
237 kΩ
Operational States
Description
LED
Standby
Power
Transfer
Charge
Complete
Fault
PMOD
Warning
LED1, Green
–
–
–
–
–
LED2, Red
–
–
–
–
–
LED1, Green
OFF
BLINK SLOW
ON
OFF
OFF
LED2, Red
OFF
OFF
OFF
ON
BLINK FAST
LED1, Green
OFF
BLINK SLOW
ON
OFF
OFF
LED2, Red
OFF
OFF
OFF
OFF
BLINK FAST
LED1, Green
OFF
BLINK SLOW
ON
ON
OFF
LED2, Red
OFF
OFF
OFF
ON
BLINK FAST
LED1, Green
OFF
BLINK SLOW
ON
OFF
OFF
LED2, Red
OFF
OFF
OFF
ON
BLINK FAST
LED1, Green
OFF
BLINK SLOW
ON
OFF
OFF
LED2, Red
OFF
OFF
OFF
ON
BLINK FAST
LED1, Green
ON
BLINK SLOW
ON
OFF
OFF
LED2, Red
ON
OFF
OFF
ON
BLINK FAST
LED1, Green
ON
BLINK SLOW
ON
OFF
OFF
LED2, Red
ON
OFF
OFF
ON
BLINK FAST
LED1, Green
ON
BLINK SLOW
ON
OFF
OFF
LED2, Red
ON
OFF
OFF
ON
BLINK FAST
LED1, Green
ON
BLINK SLOW
ON
OFF
OFF
LED2, Red
ON
OFF
OFF
ON
BLINK FAST
LED1, Green
ON
BLINK SLOW
ON
OFF
OFF
LED2, Red
ON
OFF
OFF
ON
BLINK FAST
LED1, Green
–
–
–
–
–
LED2, Red
–
–
–
–
–
LED1, Green
–
–
–
–
–
LED2, Red
–
–
–
–
–
LED1, Green
–
–
–
–
–
LED2, Red
–
–
–
–
–
Reserved for test
Generic+ CS100 + CS90 + CS6min
Generic
Generic + CS100
Generic + CS100 + CS90
Generic+ CS100 + CS6min
Suggested
Suggested + CS100
Suggested + CS100 + CS90
Suggested+ CS100 + CS6min
Suggested+ CS100 + CS90 + CS6min
Reserved
Reserved
Reserved
Support
CS–100
Support
CS–90
Support
CS–6Min
–
–
–
YES
YES
YES
NO
NO
NO
YES
NO
NO
YES
YES
NO
YES
NO
YES
NO
NO
NO
YES
NO
NO
YES
YES
NO
YES
NO
YES
YES
NO
NO
–
–
–
–
–
–
–
–
–
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Copyright © 2011–2012, Texas Instruments Incorporated
Product Folder Links: bq500210
11
bq500210
SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 2012
www.ti.com
Thermal Protection
The bq500210 can provide thermal protection to the transmitter. An external NTC resistor can be placed in the
most thermally challenged area, which usually is the center of the transmitting coil, and connected between the
dedicated pin 2 and GND. The threshold on pin 2 is set to 1.00V. The NTC resistor and the resistor from pin 2 to
VCC create a temperature sensitive divider. The user has full flexibility choosing the NTC resistor and the value of
the resistor from pin 2 to VCC to set the desired temperature when the system shuts down.
RTEMP_IN = 2.3 x RNTC(TMAX)
(1)
The system will attempt to restore normal operation after approximately five minutes of being in the suspended
mode due to tripping the over-temperature threshold, or if the receiver is removed. The bq500210 has a built-in
thermal sensor that prevents the die temperature from exceeding 135°C. This sensor has ~10°C hysteresis.
Audible Notification on Power Transfer Begin
The bq500210 is capable of activating two types of buzzers to indicate that power transfer has begun. Pin 24
outputs a high logic signal for 0.4s that is suitable to activate DC type buzzers with built in tone generators, or
other types of sound generators, or custom indication systems. Pin 23 outputs for 0.4 seconds a 4 kHz square
wave signal suitable for inexpensive AC type ceramic buzzers.
Power-On Reset
The bq500210 has an integrated power-on reset (POR) circuit that monitors the supply voltage. At power-up, the
POR circuit detects the V33D rise. When V33D is greater than VRESET, the device initiates an internal startup
sequence. At the end of the startup sequence, the device begins normal operation.
External Reset
The device can be forced into a reset state by an external circuit connected to the RESET pin. A logic low
voltage on this pin holds the device in reset. To avoid an erroneous trigger caused by noise, a 10kΩ pull up
resistor connected to 3.3V is recommended.
Parasitic Metal Object Detection (PMOD)
As a safety feature, the bq500210 can be configured to detect the presence of a parasitic metal object placed in
the vicinity of the magnetic field. The bq500100 uses the Rectified Power Packet information and the measured
transmitter input-power to calculate parasitic losses in the system. When an excessive power loss is detected,
the device will blink the red LED to warn about this undesirable condition. If during a twenty second warning time
the parasitic metal object is not removed, the controller will disable power transfer. After being in halt for five
minutes, the bq500210 will attempt normal operation. If the object that caused excessive power dissipation is still
present, the sequence will be repeated over and over again. If the metal object is removed during this twenty
second warning time, then normal operation will be restored promptly.
To facilitate the parasitic loss function, the bq500210 monitors the input voltage and the input current supplied to
the power drive circuit.
The PMOD_THR pin is used to set the threshold at which the PMOD is activated. The highest bin, the pin is left
floating, disables the PMOD feature.
Note: The WPC Specification V1.0 does not define the requirements and thresholds for the PMOD feature.
Hence, metal object detection may perform differently with different products. Therefore, the threshold setting is
determined by the user. In most desktop wireless charger applications, a PMOD threshold setting of 0.8W has
shown to provide acceptable results in stopping power transfer and preventing small metal objects like coins,
pharmaceutical wraps, etc. from becoming dangerously hot when placed in the path of the wireless power
transfer. Figure 2 depicts PMOD performance measured on a bq500210 EVM with a bq51013 EVM. The
parasitic metal loss is emulated by loading the output of the rectifier in the bq51013 EVM.
ADVANCED CHARGE INDICATION SCHEMES
The WPC specification provides an End of Power Transfer message (EPT–01) to indicate charge complete.
Upon receipt of the charge complete message, the bq500210 will change the LED indication as defined by the
LED_MODE pin (normally solid green LED output), and halt power transfer for 5 minutes.
12
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Product Folder Links: bq500210
bq500210
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SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 2012
In some battery charging applications there is a benefit to continue the charging process in trickle charge mode
to top off the battery. There are several information packets in the WPC specification related to the levels of
battery charge – Charge Status. The bq500210 uses these commands in association with some of the LED
modes described in Table 2 to enable the top-off charging pattern. When CS100 LED mode is enabled, the
bq500210 will change the LED indication to reflect charge complete when a Charge Status = 100% message is
received, but unlike the response to an EPT, it will not halt power transfer while the LED is solid green. The
mobile device can use a CS100 packet to enable trickle charge mode.
Note that all options related to CS100 have an effect on the LEDs only; they do not have any impact on actual
power transfer which continues uninterrupted.
Two more optional modes are available which can be used to change the LED mode back to indicate charging
after the CS100 has forced the charge complete output:
• If CS90 is enabled, a Charge Status message indicating less than 90% charge will force the LED output to
indicate charging (typically a slow blinking green LED).
• When CS6MIN is enabled, and if the bq500210 does not detect another CS100 packet for six minutes, it will
assume the receiver charge has dropped significantly and will turn on charging status indication.
APPLICATION INFORMATION
The application diagram for the transmitter with reduced standby power consumption is shown in Figure 6.
Power reduction is achieved by periodically shutting down the bq500210 while LED and housekeeping control
functions are continued by U4 – the low-cost, low quiescent current microcontroller MSP430G2001. When U4 is
present in the circuit (which is set by a pull-up resistor on bq500210 pin 25), the bq500210 at first power-up
boots the MSP430G2001 with the necessary firmware and the two chips operate in tandem.
During standby operation, the bq500210 periodically issues SLEEP command, Q12 pulls down the enable pin on
U2, the TLV70033 LDO, which shut off power to the bq500210.
Meanwhile, the MSP430G2001 maintains the LED indication and stores previous charge state during this
bq500210 shut-off period.
This bq500210 shut-off period is set by the RC time constant network of R25, C38 (from Figure 6). WPC
compliance mandates the power transmitter controller awakes every 0.4s to produce an analog ping and check if
a valid device is present. Altering this time constant, therefore, is not advised.
Note: The user does not need to program the MSP430G2001, an off-the-shelf part can be used! The user cannot
modify or customize this firmware.
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Product Folder Links: bq500210
13
bq500210
SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 2012
www.ti.com
C21
0.01uF
50V
VIN
N/C
VCC
C26
0.1uF
50V
U5
VIN
R33
1R
Buck Regulator
L1
330uH
BOOT
U2
PH
IN
VSEN
EN
ENA
VIN
3V3_VCC
R9
1K0
OUT
1
3
6
AGND
I_SENSE
DC Jack
19 Vin
C6
10uF
50V
SS
C25
0.1uF
50V
D1
MBR0540
GND COMP
AGND
GND
N/C
R36
390K
C8
0.1uF
50V
TLV70033
AGND
AGND
470R
AGND
AGND
U3
C28
0.01uF
50V
GND_TIE
R4
3K01
PWM
7 EN/PG U6
DPWM-1A
AGND
GND
AGND
AGND
R13
190K
Q12
BSS138
C9
0.1uF
50V
C16
0.1uF
50V
UGATE
C15
47nF
100V
COIL
1
C29
BOOT 2
50V
PH 8
GND
LGATE 5
Q2
TPS28225D
GND
3V3_VCC
R6
200K
23K2
R35
10R
3V3_VCC
COMM+
R21
22R
R31
10R
R11
10K0
4
3
2
1
I_SENSE
46
45
42
33
34
35
31
30
29
28
27
PMB_CTRL
PMB_ALRT
PMB_DATA
PMB_CLK
20
19
11
10
DPWM_A
DPWM_B
MSP_SYNC
DOUT_2B
DOUT_4A
DOUT_4B
12
13
14
15
16
17
MSP_RDY
MSP_MOSI/LPWR_EN
BUZ_DC
BUZ_AC
26
25
24
23
AIN8
AIN3
T_SENSE
AIN5
V_IN
AIN7
I_IN
SLEEP
MSP_RST
MSP_MISO
MSP_TEST
6
7
8
9
MSP_CLK
18
21
22
MSP_CLK
DOUT_TX
DRV_CFG
37
38
39
40
COMM_A+
COMM_ACOMM_B+
COMM_B-
AGND
BPCAP
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
V33A
U1
SLEEP
MSP_RST/LED_A
MSP_MISO/LED_B
MSP_TEST
C20
1.0uF
16V
AGND
R24
10R
10K0
R15
10V
EPAD
GND
LED_MODE
PMOD_THR
R2
10R
DPWM-1A
MSP_MISO
R47
10K0
MSP_TEST
R17
10K0
MSP_SYNC
U4
MSP_CLK
1
2
3
4
5
6
7
MSP_SYNC
AGND
MSP_RDY
MSP_MOSI
MSP_RDY
R48
10K0
14
13
12
11
10
9
P1.7
8
VCC
P1.0
P1.1
P1.2
P1.3
GND
XIN
XOUT
TEST
RST
P1.4
P1.5
P1.6
3V3_VCC
C12
1.0nF
16V
BUZ
MSP430G2001
44
43
R22
100K
AGND
R12
47K0
0.01uF
C10
50V
49
47
COMM-
4.7uF
C11
R16
10K0
MSP_MOSI
32
COMM+
AGND
AGND
VCC
AGND
GND
3V3_VCC
RESET
GND
AGND
C4
4.7nF
50V
V33FB
REFIN
5
36
J6
C24
4.7nF
50V
41
48
C3
1.0uF
16V
BQ500210
R10
76K8
Optional NTC Sensor
C1
1.0uF
16V
V33D
R19
10K0
C14
33pF
50V
R30
10K
COMM-
AGND
VIN
D3
BAT54SW
C5
4.7uF
10V
R26
10K0
3V3_VCC
GND
R14
AGND
C43
4.7uF
10V
C13
47nF
100V
C18
4.7nF
50V
GND
R18
10K0
3V3_VCC
C27
22uF
25V
0.1uF
Power Train
C38
4.7uF
10V
SLEEP
Q1
R3
10R
VDD
3
R25
280K
R7
20m
R32 1R
AGND
4 GND
AGND
- 5
AGND
GREEN
D2
C23
0.1uF
50V
+ 4
2
Q3
BC847CL
6
C37
2700pF
50V
INA199A2
C17
0.1uF
50V
R5
R37
76K8
AGND
C32
0.1uF
50V
C2
47uF
6.3V
R1
10K0
TPS54231
AGND
VIN
3V3_VCC
R23
42K2
R20
10K0
AGND
Low Power Supervisor
R8
10K0
R28
470R
AGND AGND
AGND
Q7
BSS138
AGND
MSP_RST
R27
470R
D5
G
R
AGND
AGND
Figure 6. Typical Application Diagram for Wireless Power Transmitter with Reduced Standby Power
14
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bq500210
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SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 2012
C21
0.01uF
50V
VIN
N/C
DC Jack
19 Vin
C6
10uF
50V
ENA
SS
C25
0.1uF
50V
AGND
L1
330uH
R9
1K0
PH
D1
MBR0540
GND COMP
R37
76K8
GND_TIE
C2
47uF
6.3V
R1
10K0
AGND
C32
0.1uF
50V
AGND
INA199A2
C17
0.1uF
50V
R36
390K
AGND
R4
3K01
AGND
GND
R13
190K
3V3_VCC
R7
20m
R32 1R
C9
0.1uF
50V
Q1
R3
10R
VDD
PWM
7 EN/PG U6
DPWM-1A
C16
0.1uF
50V
- 5
AGND
3
AGND
C23
0.1uF
50V
+ 4
2
Q3
BC847CL
4 GND
AGND
3
6
U3
6
C37
2700pF
50V
C28
0.01uF
50V
1
AGND
I_SENSE
VSEN
AGND
R33
1R
Buck Regulator
BOOT
TPS54231
AGND
VIN
3V3_VCC
C26
0.1uF
50V
U5
VIN
VIN
3V3_VCC
UGATE
C15
47nF
100V
COIL
1
BOOT 2
PH 8
C29
50V
GND
LGATE 5
Q2
TPS28225D
R21
22R
C13
47nF
100V
C18
4.7nF
50V
Power Train
3V3_VCC
C43
4.7uF
10V
C27
22uF
25V
0.1uF
GND
C5
4.7uF
10V
3V3_VCC
GND
R26
10K0
R6
200K
GND
R14
23K2
RESET
AIN8
AIN3
T_SENSE
AIN5
33
34
PMB_CTRL
PMB_ALRT
PMB_DATA
PMB_CLK
20
19
11
10
DPWM_A
DPWM_B
MSP_SYNC
DOUT_2B
DOUT_4A
DOUT_4B
12
13
14
15
16
17
MSP_RDY
MSP_MOSI/LPWR_EN
BUZ_DC
BUZ_AC
26
25
24
23
V33A
35
31
30
29
28
27
U1
MSP_CLK
DOUT_TX
DRV_CFG
37
38
39
40
COMM_A+
COMM_ACOMM_B+
COMM_B-
47
COMM-
18
21
22
R28
470R
EPAD
COMM+
SLEEP
MSP_RST/LED_A
MSP_MISO/LED_B
MSP_TEST
LED_MODE
PMOD_THR
C20
1.0uF
16V
R35
10R
COMM+
10K0
R15
D3
BAT54SW
R31
10R
C14
33pF
50V
R30
10K
COMM-
AGND
AGND
AGND
R2
10R
DPWM-1A
MSP_SYNC
R17
10K0
AGND
44
43
49
AGND
V_IN
AIN7
I_IN
GND
6
7
8
9
GND
I_SENSE
C4
4.7nF
50V
GND
46
45
42
AGND
BPCAP
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
32
3V3_VCC
5
4
3
2
1
C3
1.0uF
16V
BQ500210
R10
76K8
R11
10K0
V33FB
REFIN
36
R19
10K0
41
48
V33D
AGND
VIN
3V3_VCC
C1
1.0uF
16V
R23
42K2
R27
470R
D5
G
AGND
R
AGND
AGND
Figure 7. Typical Application Diagram for Wireless Power Transmitter
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Product Folder Links: bq500210
15
bq500210
SLUSAL8C – JUNE 2011 – REVISED SEPTEMBER 2012
www.ti.com
REVISION HISTORY
Changes from Original (June 2011) to Revision A
Page
•
Changed APPLICATION INFORMATION description ........................................................................................................ 13
•
Changed Figure 6 ............................................................................................................................................................... 14
Changes from Revision A (August 2011) to Revision B
Page
•
Changed APPLICATION INFORMATION description ........................................................................................................ 13
•
Changed Figure 6 ............................................................................................................................................................... 14
•
Changed Figure 7 ............................................................................................................................................................... 15
Changes from Revision B (July 2012) to Revision C
Page
•
Changed Functional Block Diagram ..................................................................................................................................... 4
•
Changed pinout ..................................................................................................................................................................... 5
•
Changed pin 26 to MSP_RDY .............................................................................................................................................. 6
•
Changed pins 27-31 to Reserved, for factory use only in PIN FUNCTIONS ....................................................................... 6
16
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Product Folder Links: bq500210
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
BQ500210RGZR
NRND
VQFN
RGZ
48
2500
RoHS & Green
NIPDAU
Level-3-260C-168 HR
-40 to 110
BQ500210
BQ500210RGZT
NRND
VQFN
RGZ
48
250
RoHS & Green
NIPDAU
Level-3-260C-168 HR
-40 to 110
BQ500210
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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