Overview
The TPS63031DSKR is a high-efficiency single inductor buck-boost converter produced by Texas Instruments. This device is designed to provide a versatile power supply solution for a wide range of battery-powered products, including those using two-cell or three-cell alkaline, NiCd or NiMH batteries, or single-cell Li-ion or Li-polymer batteries. The converter operates in both step-down and boost modes, automatically transitioning between these modes based on the input voltage. It features a fixed-frequency pulse width modulation (PWM) controller with synchronous rectification, ensuring high efficiency across various load conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 10-pin VSON (DSK) |
| Operating Temperature Range (°C) | -40 to 125 |
| Input Voltage Range | 1.8 V to 5.5 V |
| Output Voltage Range | 1.2 V to 5.5 V (fixed and adjustable) |
| Output Current (Step-Down Mode) | Up to 800 mA at 3.3 V (VIN = 3.6 V to 5.5 V) |
| Output Current (Boost Mode) | Up to 500 mA at 3.3 V (VIN > 2.4 V) |
| Efficiency | Up to 96% |
| Quiescent Current | |
| Switch On-Resistance (High-Side/Low-Side) | 200 mΩ each |
| Maximum Line Regulation | 0.5% |
| Maximum Load Regulation | 0.5% |
| Overtemperature Protection | 140 °C with 20 °C hysteresis |
Key Features
- Automatic transition between step-down and boost mode
- High efficiency up to 96%
- Fixed and adjustable output voltage options from 1.2 V to 5.5 V
- Power-save mode for improved efficiency at low-output power
- Forced fixed frequency operation and synchronization possible
- Load disconnect during shutdown
- Overtemperature protection
- Low quiescent current less than 50 µA
- Softstart and short circuit protection
Applications
- Portable audio players
- PDAs
- Cellular phones
- Personal medical products
- Battery-powered devices requiring efficient voltage regulation
Q & A
- What is the input voltage range of the TPS63031DSKR?
The input voltage range is from 1.8 V to 5.5 V.
- What are the output voltage options for the TPS63031DSKR?
The output voltage can be fixed or adjustable, ranging from 1.2 V to 5.5 V.
- What is the maximum output current in step-down mode?
The maximum output current in step-down mode is up to 800 mA at 3.3 V (VIN = 3.6 V to 5.5 V).
- What is the maximum output current in boost mode?
The maximum output current in boost mode is up to 500 mA at 3.3 V (VIN > 2.4 V).
- What is the efficiency of the TPS63031DSKR?
The efficiency can be up to 96%.
- How does the device transition between step-down and boost modes?
The device automatically transitions between step-down and boost modes based on the input voltage.
- What is the quiescent current of the TPS63031DSKR?
The quiescent current is less than 50 µA.
- Does the TPS63031DSKR have overtemperature protection?
- How is the device enabled and disabled?
The device is enabled when the EN pin is set high and disabled when the EN pin is set to GND.
- What happens to the load during shutdown?
During shutdown, the load is disconnected from the input.
