參數(shù)資料
型號(hào)： TPS65105RGE
廠商： Texas Instruments, Inc.
英文描述： TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND VCOM BUFFER
中文描述： 三路輸出液晶供應(yīng)線性穩(wěn)壓器和VCOM緩沖器
文件頁(yè)數(shù)： 10/25頁(yè)
文件大小： 816K
代理商： TPS65105RGE
www.ti.com
0
0.02
0.04
0.06
0.08
0.10
0.12
0.14
9
10
11
12
13
14
15
Vo1 Output Voltage V
IO
Vo3 = 18 V (Doubler Mode)
T
A
= 25
°
C
T
A
= 85
°
C
T
A
= 40
°
C
0
0.02
0.04
0.06
0.08
0.10
0.12
9
10
11
12
13
14
15
Vo1 Output Voltage V
IO
Vo3 = 28 V (Tripler Mode)
T
A
= 25
°
C
T
A
= 85
°
C
T
A
= 40
°
C
DETAILED DESCRIPTION
Main Boost Converter
The main boost converter operates with PWM and a fixed switching frequency of 1.6 MHz. The converter uses a
unique fast response, voltage mode controller scheme with input voltage feedforward. This achieves excellent
line and load regulation (0.2% A load regulation typical) and allows the use of small external components. To add
higher flexibility to the selection of external component values the device uses external loop compensation.
Although the boost converter looks like a nonsynchronous boost converter topology operating in discontinuous
mode at light load, the TPS65100/05 maintains continuous conduction even at light load currents.
VCOM Buffer
VCOMIN is the input of the VCOM buffer. If the VCOM buffer is not required for certain applications, it is possible
to shut down the VCOM buffer by statically connecting VCOMIN to ground, reducing the overall quiescent
current. The VCOM buffer features soft start avoiding a large voltage drop at Vo1 during start-up. The VCOMIN
cannot be pulled dynamically to ground during operation.
Enable and Power On Sequencing (EN, ENR)
The device has two enable pins. These pins should be terminated and not left floating to prevent unpredictable
operation. Pulling the enable pin (EN) high enables the device and starts the power on sequencing with the main
boost converter Vo1 coming up first then the negative and positive charge pumps and the VCOM buffer. If the
VCOMIN pin is held low, the VCOM buffer remains disabled. The linear regulator has an independent enable pin
(ENR). Pulling this pin low disables the regulator, and pulling this pin high enables this regulator.
TPS65100
TPS65105
SLVS496B–SEPTEMBER 2003–REVISED MARCH 2004
TYPICAL CHARACTERISTICS (continued)
Vo3 MAXIMUM LOAD CURRENT
Vo3 MAXIMUM LOAD CURRENT
Figure 13.
Figure 14.
The TPS65100/05 consists of a main boost converter operating with a fixed switching frequency of 1.6 MHz to
allow for small external components. The boost converter output voltage Vo1 is also the input voltage, connected
via the pin SUP, for the positive and negative charge pumps and the bias supply for the VCOM buffer. The linear
regulator controller is independent from this system with its own enable pin. This allows the linear regulator
controller to continue to operate while the other supply rails are disabled or in shutdown due to a fault condition
on one of their outputs. See the functional block diagram for more information.
This is achieved with a unique architecture using an external Schottky diode and an integrated MOSFET in
parallel connected between SW and SUP (see the functional block diagram). The integrated MOSFET Q2 allows
the inductor current to become negative at light load conditions. For this purpose, a small integrated P-channel
MOSFET with typically 10
r
DSon
is sufficient. When the inductor current is positive, the external Schottky diode
with the lower forward voltage conducts the current. This causes the converter to operate with a fixed frequency
in continuous conduction mode over the entire load current range. This avoids the ringing on the switch pin as
seen with a standard nonsynchronous boost converter and allows a simpler compensation for the boost
converter.
10
相關(guān)PDF資料
PDF描述
TPS65111 Triple Chargepump for LTPS LCD
TPS65110RGE LTPS LCD BIAS POWER SUPPLY TRIPLE CHARGE PUMP
TPS65111RGE LTPS LCD BIAS POWER SUPPLY TRIPLE CHARGE PUMP
TPS65121RGT SINGLE-INDUCTOR QUADRUPLE-OUTPUT TFT LCD POWER SUPPLY
TPS65120RGT SINGLE-INDUCTOR QUADRUPLE-OUTPUT TFT LCD POWER SUPPLY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS65105RGER 功能描述:LCD 驅(qū)動(dòng)器 LCD Supply with Vcom Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65105RGERG4 功能描述:LCD 驅(qū)動(dòng)器 LCD Supply with Vcom Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
TPS65110RGE 功能描述:電荷泵 Triple Chargepump for LTPS LCD RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
TPS65110RGEG3 功能描述:電荷泵 Triple Chargepump for LTPS LCD RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
TPS65110RGER 功能描述:電荷泵 Triple Chargepump for LTPS LCD RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*