LMZ34202RVQR: Texas Instruments' Advanced 42V Input DC-DC Power Module

The LMZ34202RVQR from Texas Instruments represents the pinnacle of non-isolated Point-of-Load (PoL) DC-DC converter technology. This comprehensive guide explores why engineers worldwide prefer this high-performance power module for demanding industrial and commercial applications.

Product Overview

As part of Texas Instruments' renowned power management portfolio, the LMZ34202RVQR (part number LMZ34202RVQR/NOPB) delivers exceptional performance in a compact 10mm 10mm BQFN package. This surface-mount DC-DC converter module simplifies power supply design while offering unparalleled flexibility.

Technical Specifications Deep Dive

• Wide Input Voltage Range: 4.5V to 42V operation accommodates diverse power sources including 12V/24V industrial buses, battery arrays, and unstable power rails
• Precision Output: Adjustable output voltage from 2.5V to 7.5V ( 1.5% accuracy) with 2A continuous current capability
• Exceptional Efficiency: Up to 92% power conversion efficiency reduces thermal challenges and improves system reliability
• Robust Protection Suite: Comprehensive safeguards including:
  • Precision over-current protection (OCP)
  • Thermal shutdown with hysteresis
  • Input under-voltage lockout (UVLO)
  • Output over-voltage protection (OVP)
• Advanced Control Features:
  • Active-high enable pin for power sequencing
  • Remote on/off capability
  • Soft-start functionality

Applications

The LMZ34202RVQR excels in numerous power applications:

Industrial Systems

• PLC and industrial controller power rails
• Motor drive control circuits
• Factory automation equipment
• Harsh environment electronics

Telecommunications

• Base station power subsystems
• Network switch power supplies
• 5G infrastructure equipment

Embedded Computing

• FPGA and processor power delivery
• Single-board computer power systems
• Edge computing devices

Design Advantages

Space-Saving Solution

The module's 43-BQFN package (10mm 10mm 4.3mm) integrates controller, MOSFETs, inductor, and passives, reducing board space by up to 50% compared to discrete solutions.

Simplified Implementation

Complete power stage integration minimizes design time:

• Only 4 external components required
• Comprehensive design resources available
• Pre-tested reliability

Thermal Performance

The module's advanced thermal design:

• Operates from -40 C to +105 C ambient
• Optimized thermal pad design
• Low thermal resistance ( JA: 22 C/W)

Comparative Analysis

When benchmarked against competitive modules, the LMZ34202RVQR demonstrates:

• 15% wider input voltage range
• 5-8% higher efficiency at light loads
• 30% better thermal performance
• More comprehensive protection features

Implementation Guide

Layout Recommendations

1. Use 2oz copper for power traces
2. Place input capacitors within 5mm of module
3. Maximize thermal pad connection
4. Keep sensitive analog traces away from switching nodes

Output Voltage Programming

The output voltage can be easily adjusted using a single resistor according to the formula:
Vout = 2.5V (1 + R1/R2)
Texas Instruments provides online design tools to simplify this calculation.

Purchasing Information

The LMZ34202RVQR is available through:

• Texas Instruments official website
• Authorized distributors (Digi-Key, Mouser, etc.)
• Sample program for qualified engineers

Typical lead time: 6-8 weeks for production quantities.

Conclusion

The LMZ34202RVQR DC-DC converter module sets new standards for power density, efficiency, and reliability in industrial power applications. Its unique combination of wide input range, high current capability, and integrated protection features makes it the ideal choice for engineers designing next-generation power systems.

For detailed specifications, application notes, or to request samples, visit Texas Instruments' official product page or contact your local sales representative today.