ZHCSM89 july 2021 BQ51013B-Q1
PRODUCTION DATA
- 1
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Description (continued)
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
- 8 Specifications
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3
Feature Description
- 9.3.1 Details of a Qi Wireless Power System and BQ51013B-Q1 Power Transfer Flow Diagrams
- 9.3.2 Dynamic Rectifier Control
- 9.3.3 Dynamic Efficiency Scaling
- 9.3.4 RILIM Calculations
- 9.3.5 Input Overvoltage
- 9.3.6 Adapter Enable Functionality and EN1/EN2 Control
- 9.3.7 End Power Transfer Packet (WPC Header 0x02)
- 9.3.8 Status Outputs
- 9.3.9 WPC Communication Scheme
- 9.3.10 Communication Modulator
- 9.3.11 Adaptive Communication Limit
- 9.3.12 Synchronous Rectification
- 9.3.13 Temperature Sense Resistor Network (TS)
- 9.3.14 3-State Driver Recommendations for the TS/CTRL Pin
- 9.3.15 Thermal Protection
- 9.3.16 WPC v1.2 Compliance – Foreign Object Detection
- 9.3.17 Receiver Coil Load-Line Analysis
- 9.4 Device Functional Modes
-
10Application and Implementation
- 10.1 Application Information
- 10.2
Typical Applications
- 10.2.1
BQ51013B-Q1 Wireless Power Receiver Used as a Power
Supply
- 10.2.1.1 Design Requirements
- 10.2.1.2
Detailed Design Procedure
- 10.2.1.2.1 Using The BQ51013B-Q1 as a Wireless Power Supply: (See )
- 10.2.1.2.2 Series and Parallel Resonant Capacitor Selection
- 10.2.1.2.3 Recommended RX Coils
- 10.2.1.2.4 COMM, CLAMP, and BOOT Capacitors
- 10.2.1.2.5 Control Pins and CHG
- 10.2.1.2.6 Current Limit and FOD
- 10.2.1.2.7 RECT and OUT Capacitance
- 10.2.1.3 Application Curves
- 10.2.2 Dual Power Path: Wireless Power and DC Input
- 10.2.3 Wireless and Direct Charging of a Li-Ion Battery at 800 mA
- 10.2.1
BQ51013B-Q1 Wireless Power Receiver Used as a Power
Supply
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
10.2.1.3 Application Curves
Figure 10-4 shows wireless power start-up when the RX is placed on the TX. In this case, the BQ500212A is used as the transmitter. When the rectifier voltage stabilizes, the output is enabled and current is passed. In this case, the load is resistive generating 900 mA. The pulses on the RECT pin indicate communication packets being transferred from the RX to the TX.
Figure 10-5 shows a current transition. The plot shows a 1-A load removed then added again. Note the stability of VOUT.
Figure 10-4 Start-Up With 900-mA Load
Figure 10-5 Load Transitions (1 A to 0 A to 1 A)