Overview
The TPS61040QDBVRQ1, produced by Texas Instruments, is a high-frequency boost converter designed specifically for automotive and other applications requiring efficient voltage boosting. This device is part of the TPS6104x-Q1 family and is ideal for generating output voltages up to 28 V from a pre-regulated low voltage rail, such as dual-cell NiMH/NiCd or a single-cell Li-Ion battery. It operates within an input voltage range of 1.8 V to 6 V, making it versatile for various power conversion needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.8 to 6 | V |
| Output Voltage Range | Up to 28 | V |
| Internal Switch Current Limit | 400 mA (TPS61040-Q1), 250 mA (TPS61041-Q1) | mA |
| Switching Frequency | Up to 1 MHz | Hz |
| No-Load Quiescent Current | 28 µA (typical) | µA |
| Shutdown Current | 1 µA (typical) | µA |
| Package Type | SOT-23, TSOT23-5, 2-mm × 2-mm × 0.8-mm WSON | |
| Operating Ambient Temperature | -40 to 125 °C | °C |
| Junction-to-Ambient Thermal Resistance | 153.5 °C/W (SOT-23) | °C/W |
Key Features
- High-frequency boost converter with up to 1-MHz switching frequency, allowing the use of small external components.
- Internal soft start to prevent inrush current.
- Low quiescent current (28 µA typical) and optimized control scheme for high efficiency over the entire load current range.
- Internal thermal shutdown with a typical junction temperature of 168°C and a hysteresis of 25°C.
- Pulse frequency modulation (PFM) scheme with constant peak current control.
- Space-saving SOT-23 package and other compact package options.
Applications
- Automotive telematics, eCall, and tolling systems.
- Infotainment and cluster systems.
- Advanced Driver Assistance System (ADAS).
- LCD bias supplies and white-LED backlight supplies.
- Dual-cell NiMH/NiCd or single-cell Li-Ion battery-powered systems.
- Standard 3.3-V or 5-V to 12-V power conversions.
Q & A
- What is the input voltage range of the TPS61040QDBVRQ1?
The input voltage range is from 1.8 V to 6 V. - What is the maximum output voltage that the TPS61040QDBVRQ1 can generate?
The device can generate output voltages up to 28 V. - What is the internal switch current limit for the TPS61040-Q1?
The internal switch current limit is 400 mA for the TPS61040-Q1. - What is the switching frequency of the TPS61040QDBVRQ1?
The switching frequency can be up to 1 MHz. - What is the typical no-load quiescent current of the TPS61040QDBVRQ1?
The typical no-load quiescent current is 28 µA. - What package types are available for the TPS61040QDBVRQ1?
The device is available in SOT-23, TSOT23-5, and 2-mm × 2-mm × 0.8-mm WSON packages. - What are the typical applications of the TPS61040QDBVRQ1?
Typical applications include automotive telematics, infotainment systems, ADAS, LCD bias supplies, and white-LED backlight supplies. - How does the TPS61040QDBVRQ1 manage thermal issues?
The device has an internal thermal shutdown that turns off the internal MOSFETs when the junction temperature exceeds 168°C. - What control scheme does the TPS61040QDBVRQ1 use?
The device operates in a pulse frequency modulation (PFM) scheme with constant peak current control. - What is the significance of the internal soft start feature in the TPS61040QDBVRQ1?
The internal soft start prevents inrush current during startup, ensuring a smooth and reliable operation.
