Overview
The TPS62170DSGT from Texas Instruments is a high-performance synchronous step-down DC-DC converter optimized for applications requiring high power density. This device is part of the TPS6217x family and features Texas Instruments' advanced DCS-Control™ topology, which combines the benefits of hysteretic, voltage mode, and current mode control. The converter operates over a wide input voltage range of 3 V to 17 V and supports up to 0.5 A of continuous output current at output voltages between 0.9 V and 6 V. It is available in a compact 2-mm × 2-mm 8-pin WSON package, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 to 17 | V |
| Output Current | Up to 0.5 | A |
| Output Voltage Range | 0.9 to 6 | V |
| Switching Frequency | Typically 2.25 MHz | Hz |
| Quiescent Current | Typically 17 μA | A |
| Package Type | 8-Pin WSON | |
| Operating Temperature Range | -40 to 85 | °C |
| High-Side MOSFET ON-Resistance (VIN ≥ 6 V) | 300 to 600 mΩ | mΩ |
| Low-Side MOSFET ON-Resistance (VIN ≥ 6 V) | 120 to 200 mΩ | mΩ |
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: Automatically transitions between PWM mode and power save mode to maintain high efficiency across the entire load range.
- High Switching Frequency: Typically 2.25 MHz, allowing the use of small inductors and providing fast transient response.
- Power Good Output: Indicates whether the output voltage has reached its nominal regulation level.
- 100% Duty Cycle Mode: Allows the conversion of small input to output voltage differences, ideal for battery-powered applications.
- Over Temperature Protection and Short Circuit Protection: Ensures device reliability and safety under adverse conditions.
- Compact Package: 2-mm × 2-mm 8-pin WSON package for space-constrained designs.
Applications
- Standard 12-V Rail Supplies: Suitable for systems powered from 12-V intermediate power rails.
- POL Supply from Single or Multiple Li-Ion Batteries: Ideal for battery-powered systems requiring high power density.
- LDO Replacement: Can replace linear voltage regulators in many applications due to its high efficiency.
- Embedded Systems: Used in various embedded systems requiring compact and efficient power solutions.
- Digital Still Cameras and Video Devices: Suitable for portable electronic devices requiring low noise and high efficiency power conversion.
- Mobile PCs, Tablet PCs, and Modems: Ideal for mobile computing devices and communication equipment.
Q & A
- What is the input voltage range of the TPS62170DSGT?
The input voltage range is from 3 V to 17 V.
- What is the maximum output current of the TPS62170DSGT?
The maximum output current is up to 0.5 A.
- What is the switching frequency of the TPS62170DSGT?
The switching frequency is typically 2.25 MHz.
- Does the TPS62170DSGT support 100% duty cycle operation?
Yes, it supports 100% duty cycle operation for converting small input to output voltage differences.
- What is the quiescent current of the TPS62170DSGT in power save mode?
The quiescent current is typically 17 μA.
- What type of package does the TPS62170DSGT come in?
The device is packaged in a 2-mm × 2-mm 8-pin WSON package.
- What are the key protection features of the TPS62170DSGT?
The device features over temperature protection, short circuit protection, and current limit protection.
- How does the power good (PG) function work in the TPS62170DSGT?
The PG pin indicates whether the output voltage has reached its nominal regulation level and requires a pull-up resistor.
- Can the TPS62170DSGT be used in battery-powered applications?
Yes, it is suitable for battery-powered applications due to its high efficiency and 100% duty cycle mode.
- What is the operating temperature range of the TPS62170DSGT?
The operating temperature range is from -40°C to 85°C.
