Datasheet P9222-R (IDT)

Wireless Power Receiver for
Low Power Applications P9222-R
Datasheet Description Features The P9222-R is an integrated single-chip wireless power receiver
IC (Rx) for up to 5W applications. The device receives an AC power
signal from a wireless power transmitter, such as the P9235A-RB
WPC Qi BPP Wireless Transmitter IC, and converts it to a rectified
output voltage, which can be used to power devices or supply the
battery charger input in a wide range of wireless power
applications. The receiver (Rx) integrates a high-efficiency
synchronous full bridge rectifier (SFBR) and control circuits used to
send message packets to the transmitter (Tx) in order to optimize
power delivery.  Ultra-compact, efficient wireless power receiver for up to 5W applications  WPC 1.2.4 Qi Baseline Power Profile (BPP) compatible
 Optimized light load efficiency for low power applications
 Ping detection for reduced power consumption at end of
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 The P9222-R is highly efficient at light loads and very well-suited
for low-power applications such as earbuds case charging. A
unique Ping detect feature gives the user an early indication of the
wireless charger connection and improves thermal performance at
the end of complete battery charging. Low under-voltage lockout
(UVLO) threshold allows the receiver to start up even with a weaker
digital ping strength signal from a transmitter over an extended
area. 
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 charging
Low under-voltage lockout (UVLO) for low voltage start-up for
faster connections over an extended area
ASK and FSK modulation/demodulation for Bi-directional
Communication: Rx-to-Tx and Tx-to-Rx
Easy configuration of design parameters through I2C interface
on an external EEPROM
ADC input to measure battery voltage or system voltage
Embedded 32-bit ARM® Cortex®-M0 processor
Internal over-voltage clamping
Low standby and operating mode power consumption
High performance low dropout (LDO) regulator with low
RDS(on) and programmable current limiting
Supports I2C slave/master mode
40-WLCSP: 5  8 ball array, 2.28  3.38 mm, 0.4mm pitch The device includes over-temperature and under/over-voltage
protection. The internal over-voltage clamping protects the rectifier
output from rising above the overvoltage level when the receiver is
quickly moved from a low-coupling position to a high-coupling
position. The integrated 32-bit ARM® Cortex®-M0 processor
(trademark of ARM, Ltd.) offers a high level of programmability and
design parameters that can be easily configured through the I2C
interface or an external EEPROM.  The P9222-R is available in a RoHS ultra-small WLCSP-40
package and it is rated for a 0 to 85°C ambient operating
temperature range. Figure 1. 
 Block Diagram
Simplified Block Diagram
PDETB
PDET_RC VOUT DC Output CMA Typical Applications CM1 Wireless power solutions for mobile solutions including:
 Wireless earbuds case charging
 Wearables and fitness trackers
 Mobile devices
 Hearing aids case charging BST1 CS Rx
Coil OD0
OD1
OD2 AC1
CD /EN P9222-R
AC2
BST2
CM2
CMB
VRECT SCL
SDA EEPROM or AP
(Optional) ADC_IN
/Enable /INT GP0 External Thermistor GP1 ADC_IN GP2
LDO5P0
LDO1P8 Connect to LDO1P8
for External EEPROM
LDO5P0 LDO1P8 PGND © 2019 Integrated Device Technology, Inc. 1 September 27, 2019