Overview
The TPS54613PWPRG4 is a synchronous buck PWM DC-DC converter produced by Texas Instruments. This device is part of the TPS5461x family, designed to convert a higher DC input voltage to a lower DC output voltage efficiently. The TPS54613 specifically provides a fixed output voltage of 1.5 V with high accuracy and a maximum output current of 6 A. It is integrated into a thermally enhanced 28-pin TSSOP (PWP) PowerPAD package, which helps in reducing board area and total cost by eliminating the need for bulky heatsinks.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Input Voltage Range | 3.0 | 6.0 | V | |
| Output Voltage | 1.5 | 1.5 | V | |
| Output Current | 6 | A | ||
| PWM Frequency | 350 kHz | 550 kHz | 700 kHz | kHz |
| Quiescent Current | 6.2 | 9.6 | 12.8 | mA |
| Under-Voltage Lock Out (UVLO) Start Threshold | 2.95 | 3.0 | 3.05 | V |
| Thermal Shutdown Trip Point | 135 | 150 | 165 | °C |
| Power MOSFET Switches rDS(on) | 26 | 47 | mΩ |
Key Features
- Fixed output voltage of 1.5 V with 1.0% initial accuracy
- Internally compensated for easy use and minimal component count
- Fast transient response and high-performance voltage error amplifiers
- Wide PWM frequency range: fixed 350 kHz or 550 kHz, or adjustable from 280 kHz to 700 kHz
- Load protected by peak current limit and thermal shutdown
- Integrated bootstrap switch and external BOOT capacitor for efficient operation
- Powergood output for processor/logic reset, fault signaling, and supply sequencing
- Slow-start and enable pin for controlling startup and shutdown
- Thermally enhanced 28-pin TSSOP (PWP) PowerPAD package for reduced board area and cost
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 TPS54613?
The input voltage range is from 3 V to 6 V.
- What is the fixed output voltage of the TPS54613?
The fixed output voltage is 1.5 V.
- What is the maximum output current of the TPS54613?
The maximum output current is 6 A.
- How can the PWM frequency be adjusted?
The PWM frequency can be set to fixed values of 350 kHz or 550 kHz, or it can be externally adjusted from 280 kHz to 700 kHz by connecting a resistor between the RT pin and AGND.
- What protection features does the TPS54613 have?
The device is protected by peak current limit and thermal shutdown.
- What is the purpose of the PowerPAD package?
The PowerPAD package helps in reducing board area and total cost by eliminating the need for bulky heatsinks.
- How does the slow-start and enable pin function?
The slow-start and enable pin acts as an enable (shutdown) control and provides a slow-start function to limit in-rush currents during startup.
- What is the thermal shutdown trip point of the TPS54613?
The thermal shutdown trip point is between 135°C and 165°C.
- What is the quiescent current of the TPS54613?
The quiescent current is between 6.2 mA and 12.8 mA.
- What are some typical applications of the TPS54613?
Typical applications include low-voltage, high-density systems, point of load regulation for high-performance devices, broadband and networking infrastructure, and portable computing.
