Overview
The TPS65140PWPR, manufactured by Texas Instruments, is a highly integrated power management solution designed specifically for thin film transistor (TFT) LCD displays. This device provides all three voltages required by TFT LCDs, making it a compact and efficient power supply solution. It features a main output PWM boost converter, adjustable charge pumps for positive and negative gate drive voltages, and an auxiliary 3.3-V linear regulator controller. This versatility allows it to support a wide range of LCD display applications.
Key Specifications
| Specification | Value |
|---|---|
| Package | HTSSOP (PWP) with 24 pins |
| Operating Temperature Range | -40°C to 85°C |
| Input Voltage Range | 2.7 V to 5.8 V |
| Switching Frequency | 1.6 MHz |
| Main Output Voltage | Up to 15 V with <1% typical output voltage accuracy |
| Switch Current Limit | Typical 2.3 A (TPS65140 and TPS65141), 1.37 A (TPS65145) |
| Auxiliary Linear Regulator | 3.3-V linear regulator controller |
Key Features
- 3 independent adjustable outputs
- Virtual synchronous converter technology
- Negative regulated charge pump driver and positive charge pump converter
- Internal soft start and power-on sequencing
- Fault detection of all outputs (TPS65140 and TPS65145)
- Thermal shutdown and system power good output
- High 1.6-MHz switching frequency allowing use of small 220-nF capacitors
- Auxiliary 3.3-V linear regulator controller for digital circuits
Applications
The TPS65140PWPR is primarily designed for thin film transistor (TFT) LCD displays, particularly in applications where compact and efficient power supply solutions are required. This includes but is not limited to:
- TFT LCD panels in consumer electronics
- Industrial display systems
- Automotive display systems
- Medical display devices
Q & A
- What is the input voltage range of the TPS65140PWPR?
The input voltage range is from 2.7 V to 5.8 V. - What is the switching frequency of the main output PWM boost converter?
The switching frequency is 1.6 MHz. - How many independent adjustable outputs does the TPS65140PWPR have?
The device has 3 independent adjustable outputs. - What is the typical switch current limit for the TPS65140 and TPS65141?
The typical switch current limit is 2.3 A. - Does the TPS65140PWPR have fault detection capabilities?
Yes, the TPS65140 and TPS65145 have fault detection capabilities for all outputs. - What is the purpose of the auxiliary 3.3-V linear regulator controller?
The auxiliary 3.3-V linear regulator controller is used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only. - What type of packaging is available for the TPS65140PWPR?
The device is available in 24-Pin HTSSOP and 24-Pin VQFN PowerPAD™ packages. - What is the operating temperature range of the TPS65140PWPR?
The operating temperature range is from -40°C to 85°C. - Does the TPS65140PWPR have thermal shutdown protection?
Yes, the device has thermal shutdown protection. - How does the system power good output function?
The system power good output indicates when all supply rails are within acceptable limits.
