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| 型号： | BQ51013ARHLR |
| 厂商： | Texas Instruments |
| 文件页数： | 22/45页 |
| 文件大小： | 0K |
| 描述： | IC WIRELESS PWR RCVR 20QFN |
| 标准包装： | 1 |
| 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： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN-EP（4.50x3.50） |
| 包装： | 标准包装 |
| 其它名称： | 296-30568-6 |
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bq51014 is Not Recommended For New Designs
SLUSAY6B – MARCH 2012 – REVISED OCTOBER 2013
Figure 8 illustrates the shift in the Dynamic Rectifier Controll behavior based on the two different R ILIM settings.
With the rectifier voltage (V RECT ) being the input to the internal LDO, this adjustment in the Dynamic Rectifier
Control thresholds will dynamically adjust the power dissipation across the LDO where:
P DIS ( RECT OUT ) OUT
= V -V ×I
(1)
R ILIM = 250
I ILIM = 1 . 2 ′ I MAX = 300
Figure 6 illustrates how the system efficiency is improved due to the Dynamic Efficiency Scaling feature. Note
that this feature balances efficiency with optimal system transient response.
R ILIM Calculations
The bq5101x includes a means of providing hardware overcurrent protection by means of an analog current
regulation loop. The hardware current limit provides an extra level of safety by clamping the maximum allowable
output current (e.g. a current compliance). The R ILIM resistor size also set the thresholds for the dynamic rectifier
levels and thus providing efficiency tuning per each application’s maximum system current. The calculation for
the total R ILIM resistance is as follows:
I MAX
R ILIM
R ILIM = R 1 + 140
(2)
I TERM - HI
% I MAX = ′ 100
Where I MAX is the expected maximum output current during normal operation and I ILIM is the hardware over
current limit. When referring to the application diagram shown in Figure 2 , R ILIM is the sum of 140 and the R 1
resistance (e.g. the total resistance from the ILIM pin to GND).
Termination Calculations (bq51014 only)
The bq51014 includes a programmable upper termination threshold. This pin can be used to send the charge
status 100% packet (CS100) to the transmitter in order to indicate a full charge status. The header for this packet
is 0x05. Note that this packet does not turn off the transmitter and is only used as an informative indication of the
R TERM = 200 ′ % I MAX
I MAX
I MAX = 250
R ILIM
(3)
The 200 constant is specified in the datasheet as K TERM . The upper termination threshold is set as a percentage
of the I IMAX setting. For example, if the ILIM resistance is set to 250 Ω the I IMAX current will be 1A (250 ÷ 250). If
the upper termination threshold is desired to be 100 mA, this would be 10% of I IMAX . The R TERM resistor would
then equal 2k Ω (200 x 10).
When the output current is in between I TERM-HI and I TERM-LO , the CS100 packet is sent approximately every 3 min.
When the output current is below I TERM-LO , the CS100 packet is sent approximately every 7 seconds. The output
current must remain in one of the termination conditions for that specific amount of time for the first CS100
packet to be sent (deglitch). See Figure 32 for details:
I OUT
I TERM-HI
I TERM-LO
t
t LO = 7s
t HI = 180s
Figure 32. Termination Deglitch Timings for the CS100 Packet
22
Product Folder Links: bq51013A bq51014
Copyright ? 2012–2013, Texas Instruments Incorporated
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相关代理商/技术参数 |
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|---|---|
| BQ51013ARHLT | 功能描述:其他电源管理 Qi Int Wireless Pwr Receiver Solution RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| BQ51013AYFPR | 功能描述:电池管理 Qi Int Wireless Pwr Receiver Solution RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| BQ51013AYFPT | 功能描述:电池管理 Qi Int Wireless Pwr Receiver Solution RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| BQ51013B | 制造商:TI 制造商全称:Texas Instruments 功能描述:Highly Integrated Wireless Receiver Qi (WPC V1.1) Compliant Power Supply |
| BQ51013BEVM-764 | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:CPU |
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