Overview
The TPS62172DSGR is a synchronous step-down DC-DC converter produced by Texas Instruments. It is part of the TPS6217x family, which is optimized for applications requiring high power density. This converter utilizes the advanced DCS-Control™ topology, combining the benefits of hysteretic, voltage mode, and current mode control. This topology allows for seamless transition between pulse width modulation (PWM) mode and power save mode, ensuring high efficiency across a wide load range. The device is available in a compact 2-mm × 2-mm 8-pin WSON package, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 to 17 | V |
| Output Current | Up to 500 | mA |
| Output Voltage Range | 0.9 to 6 | V |
| Switching Frequency | Typically 2.25 | MHz |
| Quiescent Current | Typically 17 | µA |
| Package Type | WSON (DSG) | - |
| Package Size | 2-mm × 2-mm | - |
| Operating Temperature Range | -40 to 125 | °C |
| High-Side MOSFET ON-Resistance | 300 to 600 | mΩ (VIN ≥ 6 V) |
| Low-Side MOSFET ON-Resistance | 120 to 200 | mΩ (VIN ≥ 6 V) |
Key Features
- DCS-Control™ Topology: Combines the advantages of hysteretic, voltage mode, and current mode control for high efficiency and fast transient response.
- Seamless Power Save Mode Transition: Ensures high efficiency across the entire load range.
- Power Good Output: Indicates whether the output voltage has reached its nominal level.
- 100% Duty Cycle Mode: Supports continuous conduction mode operation.
- Short Circuit Protection and Over Temperature Protection: Protects the device against heavy loads and thermal stress.
- Pin to Pin Compatibility: Compatible with TPS62160 and TPS62125.
- Compact Package: Available in a 2-mm × 2-mm 8-pin WSON package.
Applications
- Standard 12-V Rail Supplies: Suitable for systems powered from 12-V intermediate power rails.
- POL Supply from Single or Multiple Li-Ion Battery: Ideal for battery-powered systems.
- LDO Replacement: Can replace linear voltage regulators in many applications.
- Embedded Systems: Used in various embedded systems requiring efficient power conversion.
- Digital Still Cameras and Video Devices: Suitable for portable electronic devices.
- Mobile PCs, Tablet-PCs, and Modems: Used in mobile computing and communication devices.
Q & A
- What is the input voltage range of the TPS62172DSGR?
The input voltage range is from 3 V to 17 V. - What is the maximum output current of the TPS62172DSGR?
The maximum output current is up to 500 mA. - What is the typical switching frequency of the TPS62172DSGR?
The typical switching frequency is about 2.25 MHz. - What is the quiescent current of the TPS62172DSGR in power save mode?
The quiescent current is typically 17 µA. - Does the TPS62172DSGR have built-in protection features?
Yes, it includes short circuit protection and over temperature protection. - What package type and size is the TPS62172DSGR available in?
The device is available in a 2-mm × 2-mm 8-pin WSON package. - What is the operating temperature range of the TPS62172DSGR?
The operating temperature range is from -40°C to 125°C. - Can the TPS62172DSGR be used in battery-powered systems?
Yes, it is suitable for systems powered from single or multiple Li-Ion batteries. - Is the TPS62172DSGR compatible with other Texas Instruments devices?
Yes, it is pin to pin compatible with TPS62160 and TPS62125. - How does the DCS-Control™ topology benefit the TPS62172DSGR?
The DCS-Control™ topology combines the advantages of hysteretic, voltage mode, and current mode control, providing high efficiency and fast transient response.
