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PDF STWBC Data sheet ( Hoja de datos )

Número de pieza STWBC
Descripción Digital controller
Fabricantes STMicroelectronics　
Logotipo STMicroelectronics Logotipo



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STWBC
Digital controller for wireless battery charger (WBC) transmitters Qi
1.1.2 A11 certified, PMA compatible
Datasheet - production data
VFQFPN32
Features
Digital controller for wireless battery charger
transmitter
Multiple Qi certified and PMA standard
compatible
Support for up to 5 W applications
– Mobile
– Wearable, sports gear, medical
– Remote controllers
Native support to half-bridge and full bridge
topologies
5 V supply voltage
2 firmware options
– Turnkey solution for quick design
– APIs available for application
customization(a)
Peripherals available via APIs(a)
– ADC with 10 bit precision and 1 Minput
impedance
– UART
– I2C master fast/slow speed rate
– GPIOs
Memory
– Flash and E2PROM with read-while-write
(RWW) and error correction code (ECC)
– Program memory: 32 KBytes Flash; data
retention 15 years at 85 °C after 10 kcycles
at 25 °C
– Data memory: 1 KByte true data E2PROM;
data retention:15 years at 85 °C after 100
kcycles at 85 °C
– RAM: 6 KBytes
Reference design features
– 2 layers PCBs
– Active object detection
– Graphical user interface for application
monitoring
– Evaluation boards
Operating temperature: -40 °C up to 105 °C
Package: VFQFPN32
Applications
Certified Qi A11
– Evaluation board: STEVAL-ISB027V1
– Power rate: 5W
– Input: 5V
Qi A13(a)
– Power rate: 5 W
– Input: 5 - 16 V, 12 V
Wearable(a)
– Power rate: 2 W
– Input: 5 V
PMA(a)
– power rate: 5 W
– input: 5 V
a. Contact local sale representative for further details:
see www.st.com.
February 2015
This is information on a product in full production.
DocID027322 Rev 3
1/36
www.st.com

1 page




STWBC pdf
STWBC
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
STWBC device architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
System view of a wireless charging system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
STWBC pinout view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Supply current measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pin loading conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
External capacitor CVOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
VOH standard pad at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
VOL standard pad at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
VOH standard pad at 5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
VOL standard pad at 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
VOH fast pad at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
VOL fast pad at 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
VOH fast pad at 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
VOL fast pad at 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
ADC conversion accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
VFQFPN32 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
DocID027322 Rev 3
5/36
36

5 Page





STWBC arduino
STWBC
Pinout and pin description
4.2 Pin description
Table 1. Pinout description
Pin no.
Pin name
Pin type API firmware description
Bin firmware description
1 UART_RX(1) DI
UART RX link
UART RX link
2 PWM_AUX/GPIO_2(1) DO
3 I2C_SDA/DIGIN [4](1)
4 I2C_SCL/DIGIN [5](1)
PWM output or GPO
I2C_SDA / digital input 4
I2C_SCL / digital input 5
Not used, must not be connected
to any potential
inactive (internal pull-up)
inactive (internal pull-up)
5
DRIVEOUT [3]
DO
Output driver for low-side branch Output driver for low-side branch
right right
6
GPIO_0(1)
DO
Digital output for the green light
indicator / general purpose I/O
Digital output for the green light
indicator
7
GPIO_1(1)
DO
Digital output for the red light
indicator / general purpose I/O
Digital output for the red light
indicator
8 CPP_INT_3 AI
Symbol detector
Symbol detector
9 CPP_INT_2 AI
Vmain monitor
Vmain monitor
10 CPP_REF
AI
External reference for CPP_INT_3 External reference for CPP_INT_3
(if not used, must be tied to GND) (if not used, must be tied to GND)
11 CPP_INT_1
AI
Symbol detector
Symbol detector
12 CPP_INT_0
AI
Symbol detector
Symbol detector
13 VDDA PS Analog power supply
Analog power supply
14 VSSA PS
Analog ground
Analog ground
15 TANK_VOLTAGE
AI
LC tank voltage probe
LC tank voltage probe
16 VBRIDGE
Inactive (to be tied to GND)
Inactive (to be tied to GND)
17 SPARE_ADC(1)
Spare analog input (to be tied to
GND if not used)
Spare analog input (to be tied to
GND)
18 NTC_TEMP
AI NTC temperature measurement. NTC temperature measurement.
19 ISENSE
AI
LC tank current measurement
LC tank current measurement
20 VMAIN
AI
Vmain monitor
Vmain monitor
21
DRIVEOUT [0]
DO
Output driver for low-side branch Output driver for low-side branch
left left
22 DIGIN [0](1)
Digital input 0
Inactive (internal pull-up)
23 DIGIN [1](1)
Digital input 1
Inactive (internal pull-up)
24
DRIVEOUT [1]
DO
Output driver for high-side branch Output driver for high-side branch
left left
25
DRIVEOUT [2]
DO
Output driver for high-side branch Output driver for high-side branch
right right
26 DIGIN [2](1)
Digital input 2
Inactive (internal pull-up)
27 SWIM DIO
Debug interface
Debug interface
DocID027322 Rev 3
11/36
36

11 Page







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