The TPS6510x series offers a compact and small power supply solution that provides all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.
The main output VO1, is a 1.6-MHz, fixed-frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65100/01 has a typical switch current limit of 2.3 A, and the TPS65105 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler/tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.
The TPS6510x series has an integrated VCOM buffer to power the LCD backplane. For LCD panels powered by 5 V only, the TPS6510x series has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65100/05 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65101 does not enter shutdown when one of the outputs is below its power good threshold.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | TPS6510x Triple Output LCD Supply With Linear Regulator and VCOM Buffer datasheet (Rev. D) | PDF | HTML | 31 ago 2016 |
| Application note | Basic Calculation of a Boost Converter's Power Stage (Rev. D) | PDF | HTML | 28 oct 2022 | |
| Application note | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 19 sep 2018 | ||
| Application note | Basic calculation of an inverting buck-boost power stage (Rev. A) | 28 ago 2017 | ||
| Application note | How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x | 08 ago 2017 | ||
| Application note | Load Disconnect for the TPS6510x (Rev. A) | 08 feb 2017 | ||
| Application note | How to Compensate the TPS6510x and the TPS6514x | 30 ago 2016 | ||
| Application note | Generation of a VCOM buffer input using PWM signal | 21 dic 2015 | ||
| Application note | Minimizing Ringing at the Switch Node of a Boost Converter | 15 sep 2006 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
| Paquete | Pasadores | Descargar |
|---|---|---|
| HTSSOP (PWP) | 24 | Ver opciones |
| VQFN (RGE) | 24 | Ver opciones |
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