Overview
The TPS54622RHLR is a synchronous buck converter IC designed by Texas Instruments for high-efficiency voltage regulation applications in power management systems. This device is optimized for small form factor designs, offering high efficiency and integrating both high-side and low-side MOSFETs. The TPS54622RHLR is packaged in a thermally enhanced 3.5-mm × 3.5-mm VQFN package, which helps in reducing the overall footprint of the power supply design.
The device supports a wide input voltage range of 4.5 V to 17 V and can deliver up to 6 A of output current. It features a constant frequency, peak current mode control, which simplifies external frequency compensation and enhances performance during line and load transients. The switching frequency can be adjusted from 200 kHz to 1.6 MHz, allowing for optimization of efficiency and component size.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (VIN and PVIN) | 4.5 | - | 17 | V |
| Output Voltage Range | 0.6 | - | 15 | V |
| Output Current | - | - | 6 | A |
| Switching Frequency Range | 200 kHz | - | 1.6 MHz | - |
| High-Side Switch Current Limit | 8 A | 11 A | 14 A | - |
| Low-Side Switch Sourcing Current Limit | 6.5 A | 10 A | 15 A | - |
| Low-Side Switch Sinking Current Limit | 2 A | 3 A | 4 A | - |
| Thermal Shutdown Temperature | 160°C | 175°C | - | - |
| Operating Junction Temperature Range | -40°C | - | 150°C | - |
Key Features
- Integrated 26-mΩ and 19-mΩ MOSFETs for high efficiency and reduced component count.
- Wide input voltage range: 4.5 V to 17 V.
- Adjustable switching frequency: 200 kHz to 1.6 MHz.
- Synchronization to an external clock using the RT/CLK pin.
- Monotonic start-up into prebiased outputs.
- Hiccup current limit and thermal hiccup protection.
- Adjustable slow start and power sequencing.
- Power good output monitor for undervoltage and overvoltage.
- Adjustable input undervoltage lockout.
Applications
- High-density distributed power systems.
- High-performance point-of-load regulation.
- Broadband, networking, and optical communications infrastructure.
Q & A
- Q: What is the input voltage range of the TPS54622RHLR?
A: The input voltage range is from 4.5 V to 17 V.
- Q: What is the maximum output current of the TPS54622RHLR?
A: The maximum output current is 6 A.
- Q: Can the switching frequency of the TPS54622RHLR be adjusted?
A: Yes, the switching frequency can be adjusted from 200 kHz to 1.6 MHz.
- Q: Does the TPS54622RHLR support synchronization with an external clock?
A: Yes, it supports synchronization using the RT/CLK pin.
- Q: What is the operating junction temperature range of the TPS54622RHLR?
A: The operating junction temperature range is from -40°C to 150°C.
- Q: What kind of protection mechanisms does the TPS54622RHLR have?
A: It includes hiccup current limit, thermal hiccup protection, and adjustable input undervoltage lockout.
- Q: How does the TPS54622RHLR handle start-up into prebiased outputs?
A: It supports monotonic start-up into prebiased outputs.
- Q: What is the typical efficiency of the TPS54622RHLR?
A: The TPS54622RHLR typically offers efficiency above 90% under normal operating conditions.
- Q: What are some common applications of the TPS54622RHLR?
A: Common applications include high-density distributed power systems, high-performance point-of-load regulation, and broadband, networking, and optical communications infrastructure.
- Q: What package type is the TPS54622RHLR available in?
A: It is available in a 14-pin VQFN package with an exposed thermal pad.
