Overview
The TPS65131RGER, produced by Texas Instruments, is a dual-output DC-DC converter that generates both a positive and a negative output voltage. This converter is designed to operate within an input voltage range of 2.7 V to 5.5 V, making it suitable for powering from batteries or fixed voltage rails such as 3.3 V or 5 V. The device is packaged in a 4-mm × 4-mm VQFN-24 package, offering a compact solution with minimal external components required.
The TPS65131RGER features a fixed frequency PWM control topology and a power-save mode that uses pulse-skipping at light-load currents, ensuring high efficiency and reliability. It is particularly useful in applications where both positive and negative voltage outputs are necessary, such as in split-rail power supplies.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V |
| Positive Output Voltage Range | Up to 15 V |
| Negative Output Voltage Range | Down to -15 V |
| Switch Current Limit Options | 0.8 A and 2 A |
| Conversion Efficiency | Up to 89% (Positive), Up to 81% (Negative) |
| Maximum Output Currents | Typically 200 mA to 500 mA |
| Package Type | 24-Pin VQFN (RGE) |
| Operating Temperature Range | -40°C to 85°C |
| Quiescent Current | 500 µA |
| Shutdown Current | 1 µA |
Key Features
- Fixed frequency PWM control topology with pulse-skipping mode at light-load currents
- Adjustable positive output up to 15 V and negative output down to -15 V
- Two switch current limit options: 0.8 A and 2 A
- High conversion efficiency: up to 89% for positive output and up to 81% for negative output
- Control output for external P-channel FET supports complete disconnection from battery
- Individual enable inputs for flexible output sequencing
- Protection features include overvoltage protection, input undervoltage lockout, and thermal shutdown protection
- Compact 4-mm × 4-mm VQFN-24 package
Applications
The TPS65131RGER is suitable for various applications requiring dual-output power supplies, such as:
- Split-rail power supplies
- Desktop PCs and other computing equipment
- Industrial control systems
- Medical devices requiring multiple voltage rails
- Telecommunication equipment
Q & A
- What is the input voltage range of the TPS65131RGER?
The input voltage range is 2.7 V to 5.5 V.
- What are the adjustable output voltage ranges for the positive and negative outputs?
The positive output can be adjusted up to 15 V, and the negative output can be adjusted down to -15 V.
- What are the switch current limit options for the TPS65131RGER?
The switch current limit options are 0.8 A and 2 A.
- What is the typical maximum output current range for the TPS65131RGER?
The typical maximum output currents are in the range of 200 mA to 500 mA.
- What is the quiescent current of the TPS65131RGER?
The quiescent current is 500 µA.
- Does the TPS65131RGER have protection features?
- What is the package type and size of the TPS65131RGER?
- What is the operating temperature range of the TPS65131RGER?
- Can the TPS65131RGER be used in applications requiring flexible output sequencing?
- How does the TPS65131RGER manage light-load currents?
