Professional IC Distribution & Technical Solutions

Manufacturer: VISHAY

Part Number: IHLP2525BDER2R2M01

Specifications:

• Inductance: 2.2 µH (±20%)
• Current Rating:
• Saturation Current (I_SAT): 9.0 A
• RMS Current (I_RMS): 8.6 A
• DC Resistance (DCR): 4.5 mΩ (max)
• Operating Temperature Range: -55°C to +125°C
• Frequency Range: Up to 5 MHz
• Package: IHLP (Low Profile, High-Current)
• Dimensions (L x W x H): 6.6 mm x 6.6 mm x 2.5 mm
• Shielding: Shielded (Low EMI)
• Termination: SMD (Surface Mount)

Descriptions:

The IHLP2525BDER2R2M01 is a high-performance, shielded, low-profile inductor from Vishay’s IHLP series. It is designed for high-current applications in power supplies, DC-DC converters, and voltage regulator modules (VRMs). The compact size and high efficiency make it suitable for space-constrained applications.

Features:

• High Current Handling: Supports up to 9.0 A saturation current
• Low DCR: Minimizes power loss and improves efficiency
• Shielded Construction: Reduces electromagnetic interference (EMI)
• High-Temperature Operation: Reliable performance in harsh environments
• RoHS Compliant: Meets environmental standards
• AEC-Q200 Qualified: Suitable for automotive applications

This inductor is commonly used in power management circuits, servers, telecom equipment, and industrial electronics.

# Technical Analysis of IHLP2525BDER2R2M01 Inductor

## 1. Practical Application Scenarios

The IHLP2525BDER2R2M01 is a high-performance, low-profile inductor from Vishay’s IHLP series, designed for demanding power electronics applications. Key use cases include:

Power Supply Filtering in DC-DC Converters

This inductor (2.2 µH, 6.4 A saturation current) is widely used in buck, boost, and buck-boost converters for voltage regulation. Its low DC resistance (DCR) minimizes power loss, making it ideal for high-efficiency point-of-load (POL) converters in servers, telecom equipment, and industrial power systems.

Noise Suppression in High-Frequency Circuits

With a self-resonant frequency (SRF) exceeding 10 MHz, the IHLP2525BDER2R2M01 effectively suppresses high-frequency noise in switch-mode power supplies (SMPS) and RF circuits. Its shielded construction reduces electromagnetic interference (EMI), critical for compliance with CISPR and FCC standards.

Automotive and Industrial Power Management

The component’s AEC-Q200 qualification ensures reliability in automotive applications, such as infotainment systems, ADAS, and engine control units (ECUs). Its wide temperature range (-55°C to +125°C) also suits harsh industrial environments, including motor drives and robotics.

## 2. Common Design Pitfalls and Avoidance Strategies

Overlooking Saturation Current Requirements

Designers may misjudge the inductor’s saturation current (Isat), leading to core saturation under high load. Mitigation: Verify peak current demands and select an inductor with a 20-30% higher Isat than the worst-case scenario.

Thermal Management Neglect

Despite low DCR, prolonged high-current operation can cause thermal rise. Mitigation: Ensure adequate PCB copper pour or heatsinking, and monitor temperature in high-ambient environments.

Incorrect Layout Practices

Poor placement near high-switching-noise components (e.g., MOSFETs) can degrade performance. Mitigation: Follow Vishay’s recommended layout guidelines—minimize loop area and place decoupling capacitors close to the inductor.

Ignoring AC Losses at High Frequencies

At high switching frequencies (>1 MHz), core and proximity losses increase. Mitigation: Use simulation tools to model AC losses and select an inductor with optimized core material (e.g., Vishay’s proprietary alloy powder).

## 3. Key Technical Considerations for Implementation

Electrical Parameters

• Inductance Tolerance: ±20% (standard), but tighter tolerances (±10%) are available for precision applications.
• DCR: 7.8 mΩ (max), critical for efficiency calculations.
• SRF: >10 MHz, ensuring stable operation in high-frequency designs.

Mechanical Constraints

• Footprint: 6.7 x 6.7 mm (2525 case size), compatible with automated assembly.
• Height: 2.5 mm, suitable for space-constrained designs.

Environmental Robustness

• AEC