Overview
The TPS54320RHLT, produced by Texas Instruments, is a full-featured 17-V, 3-A synchronous step-down converter. This device is optimized for small designs through high efficiency and the integration of high-side and low-side MOSFETs. It is designed to reduce component count and footprint, making it ideal for space-constrained applications. The converter supports a wide input voltage range of 4.5V to 17V and features a high switching frequency of 200-kHz to 1.2-MHz, which can be synchronized to an external clock. The TPS54320RHLT is available in a 14-pin, 3.5-mm × 3.5-mm VQFN, thermally enhanced package.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.5V to 17V |
| Output Current | Up to 3A |
| Switching Frequency | 200-kHz to 1.2-MHz |
| MOSFET Resistance | 57-mΩ / 50-mΩ |
| Voltage Reference | 0.8V with ±1% Accuracy |
| Shutdown Quiescent Current | 2-µA |
| Operating Junction Temperature Range | –40°C to 150°C |
| Package Type | 14-pin VQFN, 3.5-mm × 3.5-mm |
Key Features
- Integrated high-side and low-side MOSFETs
- Split Power Rail: 1.6 to 17 V on PVIN
- Synchronizes to External Clock
- Monotonic Start-Up into Prebiased Outputs
- Hiccup Overcurrent Protection
- Thermal Shutdown
- Adjustable Slow Start/Power Sequencing
- Power Good Output for Undervoltage and Overvoltage Monitoring
- Adjustable Input Undervoltage Lockout (UVLO)
- Supported by SwitcherPro™ Software Tool
Applications
The TPS54320RHLT is suitable for a variety of applications requiring high efficiency and compact design, such as:
- Industrial Power Supplies
- Aerospace and Defense Systems
- Automotive Systems
- Telecommunications Equipment
- High-Performance Computing and Data Centers
Q & A
- What is the input voltage range of the TPS54320RHLT?
The input voltage range is 4.5V to 17V. - What is the maximum output current of the TPS54320RHLT?
The maximum output current is up to 3A. - What is the switching frequency range of the TPS54320RHLT?
The switching frequency range is 200-kHz to 1.2-MHz. - Does the TPS54320RHLT support synchronization to an external clock?
Yes, it supports synchronization to an external clock. - What is the operating junction temperature range of the TPS54320RHLT?
The operating junction temperature range is –40°C to 150°C. - What type of package is the TPS54320RHLT available in?
The TPS54320RHLT is available in a 14-pin, 3.5-mm × 3.5-mm VQFN, thermally enhanced package. - Does the TPS54320RHLT have overcurrent protection?
Yes, it features hiccup overcurrent protection and cycle-by-cycle current limiting. - Is the TPS54320RHLT compatible with other Texas Instruments products?
Yes, it is pin-to-pin compatible with the TPS54620. - What software tools support the TPS54320RHLT?
The TPS54320RHLT is supported by SwitcherPro™ Software Tool and WEBENCH® Power Designer. - Can the TPS54320RHLT be used for power sequencing?
Yes, it allows for adjustable slow start/power sequencing.
