Overview
The TPS54620RHLT, produced by Texas Instruments, is a highly integrated, synchronous step-down converter optimized for small design footprints and high efficiency. This converter is packaged in a thermally enhanced 3.50 mm × 3.50 mm QFN package and is capable of delivering up to 6 A of output current. It features integrated high-side and low-side MOSFETs with on-resistances of 26 mΩ and 19 mΩ, respectively. The device supports a wide input voltage range of 1.6 V to 17 V on the power stage input (PVIN) and 4.5 V to 17 V on the control input (VIN), making it versatile for various applications. The TPS54620RHLT is designed to reduce component count and footprint through current mode control and high switching frequencies up to 1.6 MHz.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (PVIN) | 1.6 to 17 | V |
| Input Voltage Range (VIN) | 4.5 to 17 | V |
| Output Current | Up to 6 | A |
| Switching Frequency | 200 kHz to 1.6 MHz | |
| High-Side MOSFET On-Resistance | 26 mΩ | |
| Low-Side MOSFET On-Resistance | 19 mΩ | |
| Operating Junction Temperature Range | -40 to 150 | °C |
| Package Type | QFN (RHL) | |
| Package Size | 3.50 mm × 3.50 mm | |
| Shutdown Quiescent Current | 2 µA |
Key Features
- Integrated 26 mΩ and 19 mΩ MOSFETs
- Split Power Rail: 1.6 V to 17 V on PVIN
- 200-kHz to 1.6-MHz Switching Frequency
- Synchronizes to External Clock
- 0.8 V ±1% Voltage Reference Overtemperature
- Low 2-µA Shutdown Quiescent Current
- Monotonic Start-Up into Prebiased Outputs
- Adjustable Slow Start and Power Sequencing
- Power Good Output Monitor for Undervoltage and Overvoltage
- Adjustable Input Undervoltage Lockout
- Cycle-by-cycle current limiting and thermal shutdown protection
Applications
The TPS54620RHLT is suitable for a variety of applications requiring high efficiency and compact design, such as:
- Point-of-Load (POL) power supplies
- Industrial control systems
- Automotive systems
- Telecommunications equipment
- High-density server and data center power supplies
Q & A
- What is the maximum output current of the TPS54620RHLT?
The TPS54620RHLT can deliver up to 6 A of output current. - What is the input voltage range for the PVIN and VIN inputs?
The PVIN input voltage range is 1.6 V to 17 V, and the VIN input voltage range is 4.5 V to 17 V. - What is the switching frequency range of the TPS54620RHLT?
The switching frequency range is from 200 kHz to 1.6 MHz. - What are the on-resistances of the integrated MOSFETs?
The high-side MOSFET has an on-resistance of 26 mΩ, and the low-side MOSFET has an on-resistance of 19 mΩ. - What is the operating junction temperature range of the TPS54620RHLT?
The operating junction temperature range is -40°C to 150°C. - Does the TPS54620RHLT support power sequencing?
Yes, the device supports power sequencing through the enable and open-drain power good pins. - What is the shutdown quiescent current of the TPS54620RHLT?
The shutdown quiescent current is 2 µA. - How does the TPS54620RHLT protect against overcurrent and thermal issues?
The device features cycle-by-cycle current limiting, low-side sourcing and sinking current limits, and thermal shutdown protection. - Can the TPS54620RHLT be synchronized to an external clock?
Yes, the device can synchronize to an external clock. - What tools are available for designing with the TPS54620RHLT?
Tools such as the WEBENCH Power Designer and evaluation modules like the TPS54620EVM-374 are available for designing with the TPS54620RHLT.
