Overview
The TPS62172DSGT from Texas Instruments is a high-performance synchronous step-down DC-DC converter, part of the TPS6217x family. This device is optimized for applications requiring high power density and features the advanced DCS-Control™ topology. The DCS-Control™ topology combines the benefits of hysteretic, voltage mode, and current mode control, ensuring fast transient response and high output voltage accuracy. The converter operates with a high switching frequency of typically 2.25 MHz, allowing the use of small inductors and providing excellent DC voltage and load transient regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 V to 17 V | V |
| Output Current | Up to 500 mA | A |
| Output Voltage Range | 0.9 V to 6 V (adjustable), Fixed versions available | V |
| Switching Frequency | Typically 2.25 MHz | Hz |
| Quiescent Current | Typically 17 µA | A |
| Package Type | WSON (8-pin), 2-mm × 2-mm | |
| Operating Temperature Range | -40°C to 125°C | °C |
| Power Good Output | Open-drain, requires pull-up resistor | |
| Protection Features | Short Circuit Protection, Over Temperature Protection |
Key Features
- DCS-Control™ Topology: Combines the advantages of hysteretic, voltage mode, and current mode control for high accuracy and fast transient response.
- Wide Input Voltage Range: Operates from 3 V to 17 V, suitable for systems powered by Li-Ion batteries or 12-V intermediate power rails.
- Adjustable and Fixed Output Voltages: Output voltage can be adjusted from 0.9 V to 6 V, with fixed output voltage versions available.
- Seamless Power Save Mode Transition: Automatically transitions into power save mode at light loads, maintaining high efficiency.
- Low Quiescent Current: Typically 17 µA in power save mode.
- Power Good Output: Open-drain output indicates when the output voltage is ready.
- 100% Duty Cycle Mode: Allows operation with small input to output voltage differences.
- Protection Features: Includes short circuit protection and over temperature protection.
- Compact Package: Available in a 2-mm × 2-mm 8-pin WSON package.
Applications
- Standard 12-V Rail Supplies: Suitable for various power supply applications.
- POL Supply from Single or Multiple Li-Ion Batteries: Ideal for battery-powered systems.
- LDO Replacement: Can replace linear voltage regulators in many applications.
- Embedded Systems: Used in 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 TPS62172DSGT?
The input voltage range is from 3 V to 17 V.
- What is the maximum output current of the TPS62172DSGT?
The maximum output current is up to 500 mA.
- Can the output voltage of the TPS62172DSGT be adjusted?
- What is the typical switching frequency of the TPS62172DSGT?
The typical switching frequency is 2.25 MHz.
- What is the quiescent current in power save mode?
The quiescent current in power save mode is typically 17 µA.
- Does the TPS62172DSGT have built-in protection features?
- What is the package type and size of the TPS62172DSGT?
- What is the operating temperature range of the TPS62172DSGT?
- Can the TPS62172DSGT operate in 100% duty cycle mode?
- How does the power good output function work?
The power good output is an open-drain signal that indicates when the output voltage is ready and requires a pull-up resistor.
