Overview
The TPS54612PWPR is a part of the SWIFT™ family of dc/dc regulators from Texas Instruments. This device is a 3V to 6V input, 6A synchronous step-down converter with a fixed output voltage of 1.2V. It is packaged in a thermally enhanced 28-pin HTSSOP (PWP) PowerPAD™ package, which eliminates the need for bulky heatsinks. The TPS54612 integrates all required active components, including high-performance voltage error amplifiers, an under-voltage-lockout circuit, and a powergood output. This integration reduces board area and total cost, making it ideal for high-performance power supply designs in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.0 to 6.0 | V |
| Output Voltage | 1.2 | V |
| Output Current | 6 A (continuous) | A |
| Switching Frequency | 350 kHz, 550 kHz or adjustable (280 kHz to 700 kHz) | kHz |
| Quiescent Current | 1 mA | mA |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | 28-pin HTSSOP (PWP) | |
| Power MOSFET Switches | 30 mΩ, 12-A Peak | mΩ, A |
| Thermal Shutdown Trip Point | 135 to 165 | °C |
Key Features
- 30-mΩ, 12-A Peak MOSFET Switches for high efficiency at 6-A continuous output source and sink.
- Fixed output voltage with 1.0% initial accuracy (1.2V for TPS54612).
- Internally compensated for easy use and minimal component count.
- Fast transient response.
- Wide PWM frequency range: fixed 350 kHz, 550 kHz or adjustable from 280 kHz to 700 kHz.
- Load protection by peak current limit and thermal shutdown.
- Integrated solution reduces board area and total cost.
- Powergood output useful for processor/logic reset, fault signaling, and supply sequencing.
- Under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3 V.
- Internally and externally set slow-start circuit to limit in-rush currents.
Applications
- Low-voltage, high-density systems with power distributed at 5 V or 3.3 V.
- Point of load regulation for high-performance DSPs, FPGAs, ASICs, and microprocessors.
- Broadband, networking, and optical communications infrastructure.
- Portable computing and notebook PCs.
Q & A
- What is the input voltage range of the TPS54612PWPR? The input voltage range is 3V to 6V.
- What is the fixed output voltage of the TPS54612PWPR? The fixed output voltage is 1.2V.
- What is the maximum continuous output current of the TPS54612PWPR? The maximum continuous output current is 6A.
- What are the available switching frequencies for the TPS54612PWPR? The switching frequencies are fixed at 350 kHz, 550 kHz, or adjustable from 280 kHz to 700 kHz.
- What type of package does the TPS54612PWPR come in? It comes in a 28-pin HTSSOP (PWP) PowerPAD™ package.
- What is the quiescent current of the TPS54612PWPR? The quiescent current is 1 mA.
- What is the operating temperature range of the TPS54612PWPR? The operating temperature range is -40°C to 125°C.
- Does the TPS54612PWPR have built-in protection features? Yes, it has peak current limit and thermal shutdown protection.
- What is the purpose of the powergood output in the TPS54612PWPR? The powergood output is useful for processor/logic reset, fault signaling, and supply sequencing.
- How does the under-voltage-lockout circuit work in the TPS54612PWPR? The under-voltage-lockout circuit prevents start-up until the input voltage reaches 3 V.
