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参数资料
| 型号： | TPS65166RHAR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQCC40 |
| 封装： | 6 X 6 MM, GREEN, PLASTIC, M0-220VJJD-2, QFN-40 |
| 文件页数： | 10/45页 |
| 文件大小： | 3690K |
| 代理商： | TPS65166RHAR |
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log
_
450
22
ic
PG
low
V
R
W
=
W +
(1)
_
log
22 (1
)
PG high
ic
out
V
R
A
I
m
=
-
+
(2)
Setting the Delay Times DLY1, DLY2
DLY
th
5 A
DLY
5 A
DLY
C
=
, with DLY = Desired delay time
V
1.24 V
m
m
(3)
DLY
5
A
2.5 ms
C
=
= 10.1 nF
CDLY = 10 nF
1.24 V
m
(4)
Boost Converter
SLVS976 – SEPTEMBER 2009.......................................................................................................................................................................................... www.ti.com
The resulting PG voltage if PG pin is high impedance is dependent on R22 connection voltage (Vlogic), R22 value
and output current Iout of PG node. The output current is flowing to the external scan driver. Assuming a
maximum switch leakage current of 1
A the minimum PG output voltage can be calculated as following:
Recommended are R22 values between 5k
and 500k. Typical value for R22 is 10k.
Connecting an external capacitor to the DLY1 and DLY2 pins sets the delay time. The capacitor is charged with
a constant current source of typically 5
A. The delay time is terminated when the capacitor voltage has reached
the threshold voltage of Vth = 1.24V. If no capacitor is set, the delay time is zero. The external capacitors can be
calculated as follows:
Example for setting a delay time of 2.5ms:
The non-synchronous current mode boost converter operates in Pulse Width Modulation (PWM) operation with a
fixed frequency of 750 kHz. For maximum flexibility and stability with different external components the converter
uses external loop compensation. At start up the boost converter starts with an externally adjustable soft-start.
The boost converter provides the supply voltage for the LCD source driver as well as for the charge pump
regulator VONE. This needs to be taken into account when defining the output current requirements for the boost
converter. No feed-forward capacitor is needed for proper operation.
18
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS65166
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS65167ARHAR | 功能描述:其他电源管理 Compact LCD Bias Sply 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 |
| TPS65167ARHARG4 | 功能描述:其他电源管理 Compact LCD Bias Sply 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 |
| TPS65167EVM-277 | 功能描述:电源管理IC开发工具 TPS65167 Eval Mod RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS65167RHAR | 功能描述:其他电源管理 Compact LCD Bias Supply 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 |
| TPS65167RHARG4 | 功能描述:LCD 驱动器 12V/3.5A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
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