参数资料
型号: BQ51013AYFPR
厂商: Texas Instruments
文件页数: 31/45页
文件大小: 0K
描述: IC WIRELESS PWR RCVR 28DSBGA
标准包装: 3,000
应用: 无线电源接收器
电流 - 电源: 1.5A
电源电压: 4 V ~ 10 V
工作温度: 0°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 28-XFBGA,DSBGA
供应商设备封装: 28-DSBGA(1.9x3)
包装: 带卷 (TR)
配用: 732-4057-ND - WIRELESS CHARGING RECEIVING COIL
bq51014 is Not Recommended For New Designs
SLUSAY6B – MARCH 2012 – REVISED OCTOBER 2013
3-state Driver Recommendations for the TS-CTRL Pin
The TS-CTRL pin offers three functions with one 3-state driver interface
1. NTC temperature monitoring,
2. Fault indication,
3. Charge done indication
A 3-state driver can be implemented with the circuit in Figure 44 and the use of two GPIO connections.
BATT
M3
TERM
TS-CTRL
FAULT
M4
Figure 44. 3-state Driver for TS-CTRL
Note that the signals “TERM” and “FAULT” are given by two GPIO’s. The truth table for this circuit is found in
Table 6.
TERM
1
0
1
FAULT
0
0
1
F (Result)
Z (Normal Mode)
Charge Complete
System Fault
The default setting is TERM = 1 and FAULT = 0. In this condition, the TS-CTRL net is high impedance (hi-z) and;
therefore, the NTC is function is allowed to operate. When the TS-CTRL pin is pulled to GND by setting FAULT =
1, the Rx is shutdown with the indication of a fault. When the TS-CTRL pin is pulled to the battery by setting
TERM = 1, the Rx is shutdown with the indication of a charge complete condition. Therefore, the host controller
can indicate whether the Rx is system is turning off due to a fault or due to a charge complete condition.
Thermal Protection
The bq5101x includes a thermal shutdown protection. If the die temperature reaches T J (OFF), the LDO is shut
off to prevent any further power dissipation.
Series and Parallel Resonant Capacitor Selection
Shown in Figure 2 , the capacitors C1 (series) and C2 (parallel) make up the dual resonant circuit with the
receiver coil. These two capacitors must be sized correctly per the WPC v1.0 specification. Figure 45 illustrates
the equivalent circuit of the dual resonant circuit:
C1
Ls’
C2
Figure 45. Dual Resonant Circuit with the Receiver Coil
Section 4.2 (Power Receiver Design Requirements) in volume 1 of the WPC v1.0 specification highlights in detail
the sizing requirements. To summarize, the receiver designer will be required take inductance measurements
with a fixed test fixture. The test fixture is shown in Figure 46 :
Copyright ? 2012–2013, Texas Instruments Incorporated
Product Folder Links: bq51013A bq51014
31
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