PI3302-03-LGIZ: High-Performance DC-DC Buck Converter by Vicor Corporation | Features & Specifications
PI3302-03-LGIZ: Vicor's High-Efficiency 15A DC-DC Buck Converter for Demanding Applications
In today's power-hungry electronic systems, selecting the right DC-DC converter can make or break your design's performance. The PI3302-03-LGIZ from Vicor Corporation emerges as a premier solution for engineers seeking reliable, high-current voltage conversion. This comprehensive guide explores every aspect of this advanced power management IC, helping you understand why it's becoming the go-to choice across industries.
Product Overview and Key Differentiators
As part of Vicor's renowned power module portfolio, the PI3302-03-LGIZ belongs to the PMIC - Voltage Regulators - DC-DC Switching Regulators category. What sets this converter apart is its exceptional combination of power density (15A output current) and wide input voltage range (11V-36V), packaged in a compact surface-mount module.
Standout Features:
- Topology: Synchronous Buck Converter with >92% peak efficiency
- Output Configuration: Positive, adjustable voltage (3.3V to 6.5V)
- Power Density: 15A continuous current in just 14x10mm footprint
- Thermal Performance: Operates at full load up to 125 C junction temperature
- Switching Frequency: 800kHz enables smaller external components
In-Depth Technical Specifications
Input Characteristics
The converter accepts a wide 11V to 36V DC input, making it exceptionally versatile for:
- 12V/24V automotive systems
- Industrial power buses (18V-30V typical)
- Battery-powered applications (12V-28V Li-ion stacks)
Output Performance
| Parameter | Value |
|---|---|
| Output Voltage Range | 3.3V to 6.5V (adjustable) |
| Default Output | 3.3V (5V option available) |
| Maximum Current | 15A continuous (20A peak) |
| Line Regulation | 0.5% typical |
| Load Regulation | 1% typical |
Efficiency and Thermal Management
The synchronous rectification architecture delivers 92-95% efficiency across most of the load range. The 123-BLGA package features:
- Exposed thermal pad for optimal heat dissipation
- Low thermal resistance ( JA: 15 C/W typical)
- Operational up to 125 C junction temperature
Design Considerations and Application Circuits
Typical Implementation
Implementing the PI3302-03-LGIZ requires minimal external components:
- Input capacitors: 2x10 F ceramic + 100 F electrolytic
- Output capacitors: 3x22 F ceramic
- Inductor: 1.0 H, 15A saturation current
- Feedback resistors for voltage adjustment
Layout Recommendations
- Keep high-current paths short and wide ( 50mil traces)
- Place input capacitors within 5mm of the module
- Use multiple vias for thermal pad connection
- Separate analog and power grounds
Industry-Leading Applications
Automotive Systems
Ideal for ADAS, infotainment, and lighting systems requiring:
- 12V/24V battery input to 3.3V/5V conversion
- ISO 7637-2 compliance for transient protection
- AEC-Q100 qualified versions available
Industrial Automation
Perfect for:
- PLC I/O modules
- Motor control circuits
- Harsh environment sensors (-40 C operation)
Telecommunications
Used in:
- Base station power subsystems
- Optical network equipment
- 5G small cell power supplies
Competitive Advantages Over Alternatives
Compared to similar DC-DC converters, the PI3302-03-LGIZ offers:
| Feature | PI3302-03-LGIZ | Typical Competitor |
|---|---|---|
| Current Capacity | 15A | 10-12A |
| Efficiency | 95% peak | 85-90% |
| Operating Temp | -40 C to +125 C | -40 C to +85 C |
| Package Size | 14x10mm | 18x12mm |
Purchasing and Support Information
The PI3302-03-LGIZ is available through authorized distributors with:
- Standard lead time: 6-8 weeks
- MOQ: 100 pieces
- Evaluation boards available (PI3302-EVAL1)
For design assistance, Vicor provides:
- SPICE models
- Thermal simulation files
- Application notes (AN-123, AN-145)
Conclusion: Why Engineers Choose PI3302-03-LGIZ
The PI3302-03-LGIZ represents the pinnacle of DC-DC converter technology, combining Vicor's expertise in power electronics with practical design features. Its unmatched combination of:
- High current capacity (15A) in compact form
- Wide input voltage range (11V-36V)
- Exceptional thermal performance
- Industry-leading efficiency
makes it the optimal choice for your most challenging power conversion requirements. For volume pricing or technical support, contact Vicor's authorized distributors today.