TPS40200DR Texas Instruments TPS40200DR ?C High-Performance Buck Switching Controller

The Texas Instruments TPS40200DR is an advanced buck (step-down) switching controller designed to deliver high-efficiency power conversion in industrial, automotive, and consumer applications. Supporting an input voltage range of 4.5V to 52V and adjustable output voltage from 0.7V to 46V, this voltage-mode PWM controller integrates soft-start, frequency control, and wide input voltage compatibility, making it ideal for DC-DC power supply designs requiring flexibility and reliability.

With a switching frequency range of 35kHz to 500kHz, the TPS40200DR enables optimized efficiency and compact magnetics, while its 3A peak output current ensures robust performance in demanding applications. Packaged in an SOIC-8 (DR) surface-mount format, this controller is RoHS3-compliant and offers industrial-grade temperature resistance (-40??C to +85??C).

Key Features

Wide Input Voltage Range (4.5V?C52V) ?C Supports 12V/24V/48V systems
Adjustable Output (0.7V?C46V) ?C Precision regulation for diverse loads
500kHz Maximum Switching Frequency ?C Reduces inductor/capacitor size
Voltage-Mode PWM Control ?C Stable, noise-resistant operation
Integrated Soft-Start ?C Prevents inrush current surges
Up to 95% Duty Cycle ?C Maximizes efficiency in step-down applications
Low Quiescent Current (1.5mA) ?C Optimized for energy-sensitive designs
3A Peak Output Current ?C Suitable for moderate-power loads
RoHS3 & Lead-Free Compliance ?C Environmentally friendly

Technical Specifications

Electrical Characteristics

Package & Compliance

Applications

The TPS40200DR excels in DC-DC power conversion for industrial, automotive, and consumer electronics including:

1. Industrial Power Systems

• Factory automation controllers
• PLC (Programmable Logic Controller) power supplies
• Motor drive auxiliary power

2. Automotive & Transportation

• Infotainment systems (12V/24V input)
• ECU (Engine Control Unit) power management
• LED driver modules

3. Consumer Electronics

• Set-top boxes & networking equipment
• Portable battery-powered devices
• High-power USB-C PD adapters (supports PD negotiation via PMIC)

4. Renewable Energy & Telecom

• Solar microinverters (48V step-down conversion)
• Telecom base station backup power

Key Features

1. Wide Input Voltage Compatibility (4.5V?C52V)

• Supports?12V/24V/48V bus systems?without requiring additional pre-regulation stages.
• Ideal for?battery-powered systems?(e.g., 12V automotive, 48V industrial backup).

2. Adjustable Output Voltage (0.7V to 46V)

• Uses?external resistor divider?for precise voltage regulation.
• Ideal for low-voltage microcontrollers, FPGAs, and ASICs.

3. Programmable Switching Frequency (35kHz?C500kHz)

• Higher frequencies (300kHz?C500kHz)?allow smaller inductors/capacitors.
• Lower frequencies (35kHz?C100kHz)?improve efficiency in high-power designs.

4. Built-in Protection & Control Features

• Soft-start circuitry?prevents inrush current.
• Frequency control?reduces EMI sensitivity.
• Non-synchronous buck topology?for cost-effective designs.

5. Compact & Reliable Packaging

• SOIC-8 (DR) package?optimizes PCB space.
• Industrial temperature rating (-40??C to +85??C)?ensures reliability.

Comparison with Alternative Models

TPS40200 Family Overview

Selection Guide:

• For high-power applications, choose the?TPS40200HD (98% duty cycle).
• For automated SMD assembly, use?TPS40200DR (T&R packaging).

About Texas Instruments

Texas Instruments (TI) is a global leader in analog and embedded semiconductor technology, providing cutting-edge power management ICs, DSPs, and microcontrollers. The company??s expertise in DC-DC switching controllers ensures the TPS40200DR delivers reliable performance backed by decades of innovation.

TI??s acquisition of National Semiconductor and continuous advancements in power electronics have solidified its position as the top choice for engineers designing efficient, compact power systems.