1. INTRODUCTION
1.1. General Description
XG915 is a high-efficiency, Qi-compliant wireless power receiver targeted for applications up to 15W. Using magnetic inductive charging technology, the receiver converts an AC power signal from a resonant tank to a programmable regulated 5V, 7V, 9V or 12V DC output voltage. The integrated, low RDSON synchronous rectifier and ultra-low dropout linear (LDO) regulator offer high efficiency, making the product ideally suited for battery-operated applications. XG915 is available in a 52-WLCSP package, and it rated for a 0 to 85°C ambient operating temperature range.
1.2. Typical Applications
n Mobile phones
n Tablets
n Accessories
1.3. Features
n WPC compliant
- Single-chip wireless power receiver up to 15W application
- WPC-1.2.3 compliant
n Synchronous Rectifier
- 96% Efficiency for Fully Synchronous Rectifier
- 97% Efficient for Post Regulator
- 84% System Efficient at 15W with XG905
- Integrated Synchronous Full Bridge Rectifier Circuit
- Output Voltage
u LDO Mode
Ø Configurable VOUT Level: 5V, 9V, 12V
Ø VOUT follow up with VRECT
- Maximum output current : 1.67A (OCL = 2A)
n System Protection
- VRECT Over Voltage Protection (Detect)
u Configurable detected level : 15,17,19,21v (default value: 21V)
- Over Current Limit
u Configurable 0.5A, 1A , 1.5A, 2A
- Over Temperature Protection
u 140˚C, thermal shutdown
n FSK De-modulator
- AC1 FSK de-modulated
n CPU Subsystem
- CPU Core
u ARM® Cortex®-M0 32-bit CPU (48MHz max)
n Memory
- 2K Bytes System RAM
- Up to 16K Bytes One Time Programmable Memory
n Clock Management
- Internal oscillator: 48MHz±1.5% @ 3V~5.5V with -40°C to 85°C
n Power Management
- Power off when External EN pin goes high.
u Regulator 5v switch to low current mode
u Regulator 1.8v shut down
n Analog peripherals
- 10Bit A/D Converters with 107 KSPS and 12 analog inputs
u Reference voltage as 2.1v
u User-programmable foreign-object detection (FOD)
u Dedicated remote temperature sensing
- Regulator 5V
- Regulator 1.8V
n I/O Ports
- External enable active low, input pin.
- Interrupt pin (INT), open drain pin.
- INT output open drain when External EN pin = 1, OCL/OVP/OTP occurs.
- Max 5 multifunction bi-directional I/Os
n Communication peripherals
- Built-in I2C
n Debug System
- ARM serial wire debug (SWD)
n Operation Temperature
- -40°C to 85°C
n Reliability
- HBM 2KV
- MM 200V
- CDM 500V
n Package
- WLCSP 2.64X3.94-52B
- QFN 5x5-40
1.4. Pin Assignments
WLCSP package pinout
