BQ500414Q Datasheet, PDF (4/34 Pages) Texas Instruments – Qi Compliant Wireless Power Transmitter Manager

bq500414Q
SLUSBE4B – JANUARY 2014 – REVISED JUNE 2014
www.ti.com
PIN
NAME
COIL_PEAK
T_SENSE
Unused
Unused
RESET
PMOD
LED_A
LED_B
LED_C
PMB_CLK
PMB_DATA
DPWM_A
FOD
Unused
COIL 1.1
COIL 1.2
COIL 1.3
EN_PWR
RESERVED
RESERVED
EMI_SHIELD
FOD_CAL
BUZ_AC
BUZ_DC
COIL_SEL
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
GND
V33D
V33A
BPCAP
GND
COMM_A+
COMM_A-
COMM_B+
COMM_B-
RESERVED
NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Pin Functions
I/O
DESCRIPTION
I Input from peak detect circuit
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
I
This pin can be either connected to GND or left open. Connecting to GND can improve layout
grounding
I
This pin can be either connected to GND or left open. Connecting to GND can improve layout
grounding
I Device reset. Use 10-kΩ to 100-kΩ pull-up resistor to 3.3-V supply
O Select for PMOD threshold
O Connect to a LED via 470-Ω resistor for status indication. Typically GREEN
O Connect to a LED via 470-Ω resistor for status indication. Typically RED
O Connect to a LED via 470-Ω resistor for status indication. Typically YELLOW
I/O 10-kΩ pull-up resistor to 3.3-V supply. I²C Clock
I/O 10-kΩ pull-up resistor to 3.3-V supply. I²C Data
O PWM Output to half bridge driver. Switching dead times must be externally generated
O Select for FOD threshold
O Reserved, leave this pin open
O Enables the first coil drive train and COMM signal selector
O Enables the second coil drive train and COMM signal selector
O Enables the third coil drive train and COMM signal selector
I/O Enable signal to the front end converter. Select the active or passive wake-up state
O Reserved, leave this pin open
I Reserved, connect to GND
I Connect to 3.3-V supply to indicate EMI shield is in use. If not, connect this pin to GND
O FOD Calibration
O AC buzzer output. A 400-ms, 4-kHz AC pulse train when charging begins
O
DC buzzer output. A 400-ms DC pulse when charging begins. This could also be connected to
an LED via 470-Ω resistor
I Coil type select. Connect to GND for A6 typle Tx
I/O Reserved, connect to GND
I/O Reserved, leave this pin open
I/O Reserved, leave this pin open
I/O Reserved, leave this pin open
I/O Reserved, leave this pin open
I/O Reserved, connect 10-kΩ pull-down resistor to GND. Do not leave open
— GND
— Digital Core 3.3-V supply. Be sure to decouple with bypass capacitors as close to the part as
possible
— Analog 3.3-V supply. This pin can be derived from V33D supply, decouple with 22-Ω resistor
and additional bypass capacitors
— Bypass capacitor for internal 1.8-V core regulator. Connect bypass capacitors to GND and to
3.3-V
— GND
I Digital demodulation noninverting input A, connect parallel to input B+
I Digital demodulation inverting input A, connect parallel to input B-
I Digital demodulation noninverting input B, connect parallel to input A+
I Digital demodulation inverting input B, connect parallel to input A-
I Reserved, leave this pin open
4
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