1. bq51013 vs bq51013A Comparison Change to bq51013ADescription Addition of Dynamic Efficiency Scaling Optimizes performance over wide range of output loads. The Dynamic Efficiency Scaling feature allows for the loss characteristics of the bq5101x to be scaled based on the maximum expected output power in the end application. This effectively optimizes the efficiency for each application. Addition of Adaptive Communication Limit feature Allows robust communications during high levels of load current noise In order to provide noise immunity to the communication channel, the output load transients must be isolated from the Rx coil. The proprietary feature Adaptive Communication Limit achieves this by dynamically adjusting the current limit of the regulator reducing transient errors to the system. Enhanced Dynamic Rectifier Control operation Enhancement of the power supply transient response loop to ensure maintaining regulated output during transient conditions bq51013: Based on absolute current (e.g. 100mA, 200mA, and 400mA) bq51013A: Based on percentage of system current setting programmed via the ILIM resistor. VTSB pin to FOD changeAllows input of rectified power measurement. FOD pin now serves the purpose of measuring the output current for the rectified power measurement. Prepares customers for easy migration to WPC v1.1 available in upcoming devices. EN1/EN2 “0 1” operation changedAllows disabling new Tracking Communication Limit function “0 1” state of EN1/EN2 modified from AD mode disabled to Tracking Communication limit disabled Support for QFN package Implementation of QFN package option for receiver function V COLD and V HOT thresholds modified Allows enhanced performance over ambient conditions bq51013 bq51013A T COLD 56% 58.7% T HOT 18% 19.6% TI Confidential – Selective Disclosure 1

2. bq51013 vs. bq51013A Comparison Pin Difference TI Confidential – Selective Disclosure 2 NOTE : FOD pin now serves the purpose of measuring the output current for the rectified power measurement. Prepares customers for easy migration to WPC v1.1 available in upcoming devices. Part NumberFunctionPackage bq51013A 5V Regulated Power Supply DSBGA / CSP bq51013AYFP QFN bq51013ARHL

3. bq51013 vs. bq51013A Comparison Application Diagram Changes bq51013 bq51013A TI Confidential – Selective Disclosure 3 Shown with external V IN switch

4. bq510xx Receiver Product Comparison DeviceFunction WPC Vers Compliant V OUT(REG) (V) I OUT Max (A) FOD Dynamic Efficiency Scaling Adaptive Communication Limit Charge Status 100% Over Current Shutdown Over Temperature External V IN Switch AC Adapt OVP (V RECT ) AC Adapt OVP Host Communications Package CSP QFN bq51011 Regulated Power Supply (Power Level = 2-5W) 1.05 1.5 ----- - Stand Alone - bq51013 Regulated Power Supply (Power Level = 2-5W) 1.05 1.5 ----- - Stand Alone - bq51013A Regulated Power Supply (Power Level = 0-5W) 1.05 1.5 - -- - Stand Alone bq51014 Regulated Power Supply (Power Level = 0-5W 1.05 1.5 - 12.5V Stand Alone - 4 TI Confidential – Selective Disclosure