Overview
The TPS65100-Q1, produced by Texas Instruments, is a comprehensive power supply solution designed specifically for thin-film transistor (TFT) LCD displays. This device integrates a triple-output configuration, including a boost converter, negative and positive charge pumps, and an auxiliary linear regulator controller. It is optimized for automotive and infotainment systems, offering a compact and efficient power management solution.
The main boost converter provides the source-drive voltage for the LCD display, operating at a fixed switching frequency of 1.6 MHz. The device also includes independently adjustable outputs, an integrated VCOM buffer, and internal soft start and power-on sequencing features. For enhanced safety, it incorporates protection mechanisms such as short-circuit detection, overvoltage protection, and thermal shutdown.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.7 | - | 5.8 | V |
| VO1 Boost Converter Output Voltage | - | - | 15 | V |
| VO1 Switching Frequency | - | 1.6 | - | MHz |
| VO1 Switch Current Limit | - | 2.3 | - | A |
| VO2 Negative Charge Pump Output Voltage | -12 | - | - | V |
| VO3 Positive Charge Pump Output Voltage | - | - | 30 | V |
| Linear Regulator Output Voltage | - | 3.3 | - | V |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | 37.2 | - | °C/W |
Key Features
- Triple-output configuration: boost converter (VO1), negative charge pump (VO2), and positive charge pump (VO3)
- Integrated VCOM buffer for LCD backplane power
- Auxiliary 3.3-V linear regulator controller for digital circuits
- Internal soft start and power-on sequencing
- Protection features: short-circuit detection, overvoltage protection, thermal shutdown
- Available in TSSOP-24 PowerPAD™ package
- Fixed switching frequency of 1.6 MHz for the boost converter
- High accuracy output voltage regulation (< 1% for VO1)
Applications
- Infotainment Systems
- Automotive Displays
- Instrument Clusters
- Center Consoles
- Rear Seat Entertainment
Q & A
- What is the input voltage range of the TPS65100-Q1?
The input voltage range is from 2.7 V to 5.8 V.
- What is the maximum output voltage of the VO1 boost converter?
The maximum output voltage of the VO1 boost converter is up to 15 V.
- What is the switching frequency of the VO1 boost converter?
The switching frequency is fixed at 1.6 MHz.
- What are the protection features of the TPS65100-Q1?
The device includes short-circuit detection, overvoltage protection, and thermal shutdown.
- What is the purpose of the integrated VCOM buffer?
The integrated VCOM buffer is used to power the LCD backplane.
- Can the linear regulator controller operate independently?
Yes, the linear regulator controller has its own enable pin and can operate independently from the other voltage rails.
- What is the thermal shutdown threshold of the TPS65100-Q1?
The thermal shutdown threshold is typically 160°C.
- How does the device handle short-circuit conditions?
The device goes into shutdown if any of the outputs are out of regulation due to a short-circuit condition.
- What package type is the TPS65100-Q1 available in?
The device is available in a TSSOP-24 PowerPAD™ package.
- What are some common applications of the TPS65100-Q1?
Common applications include infotainment systems, automotive displays, instrument clusters, center consoles, and rear seat entertainment.
