IRS27951STRPBF Equivalent & Substitute Parts

Part Overview

The IRS27951STRPBF is a Buck/Half-Bridge Regulator Controller IC manufactured by Infineon Technologies, designed for step-down and step-up/step-down DC-DC conversion applications. This device operates as a transistor driver with positive, isolation-capable output configuration and supports synchronous rectification. The part is currently classified as obsolete, making identification of suitable alternatives essential for ongoing design support and production continuity.

Substiute Parts

IRS27951STRPBF

Infineon TechnologiesIn Stock: 5876IRS27951STRPBF Datasheet

Current PartRFQ

ICE1HS01G1XUMA1

Infineon TechnologiesIn Stock: 1076ICE1HS01G1XUMA1 Datasheet

MFR RecommendedRFQ

IRS27952STRPBF

Infineon TechnologiesIn Stock: 5165IRS27952STRPBF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the IRS27951STRPBF is determined by alignment across the following critical parameters:

Topology & Function: Buck and half-bridge topologies with step-down and step-up/step-down capability are mandatory for functional equivalence.

Output Configuration: Positive, isolation-capable output configuration must be maintained.

Electrical Specifications: Supply voltage range (12V ~ 18V), switching frequency capability (up to 500kHz), duty cycle (50% maximum), and synchronous rectifier support define the operational envelope.

Package & Mounting: 8-SOIC surface mount package with 0.154" (3.90mm) width ensures PCB compatibility.

Control Interface: Enable and frequency control features must be present.

Two substitute parts are identified based on these criteria:

1. IRS27952STRPBF (Parametric Equivalent): Maintains identical topology, output configuration, electrical specifications, and package format. Product status is active, providing long-term availability.

2. ICE1HS01G1XUMA1 (Manufacturer Recommended): Offers half-bridge topology with isolated output and frequency control. Operates within compatible voltage and frequency ranges, though with different internal architecture and fault protection features.

Parameter Comparison

Engineering Selection Recommendations

IRS27952STRPBF is the primary substitute for direct replacement applications. This part maintains identical topology, output configuration, electrical specifications, and package format as the IRS27951STRPBF. The IRS27952STRPBF carries active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Operating temperature range (-40°C ~ 150°C) and moisture sensitivity level (MSL 2, 1 Year) are identical, supporting seamless integration into existing designs without thermal or environmental qualification changes.

ICE1HS01G1XUMA1 is suitable for applications where offline half-bridge conversion with isolated output is acceptable. This part operates within a compatible voltage range (10.2V ~ 18V) and offers extended switching frequency capability (50kHz ~ 609kHz). However, the absence of synchronous rectifier support and the narrower operating temperature range (-25°C ~ 125°C) require design evaluation. The higher moisture sensitivity level (MSL 3, 168 Hours) necessitates stricter handling and storage protocols. This substitute is appropriate for new designs or applications where the architectural differences provide functional advantages.

Frequently Asked Questions (FAQ)

Q: Can IRS27952STRPBF be used as a direct drop-in replacement for IRS27951STRPBF?

A: Yes. The IRS27952STRPBF maintains identical topology, output configuration, electrical specifications, package format, and control features. No design modifications are required for direct substitution in existing PCB layouts and schematics.

Q: What are the key differences between IRS27952STRPBF and ICE1HS01G1XUMA1?

A: IRS27952STRPBF is a parametric equivalent with identical buck/half-bridge topology and synchronous rectifier support. ICE1HS01G1XUMA1 is an offline half-bridge converter with isolated output and no internal synchronous rectifier. The ICE1HS01G1XUMA1 operates at lower minimum frequency (50kHz vs. unspecified minimum) and has a narrower temperature range (-25°C ~ 125°C vs. -40°C ~ 150°C).

Q: Are there package compatibility concerns when substituting these parts?

A: All three parts use 8-SOIC surface mount packages with identical 0.154" (3.90mm) width. PCB footprints and land patterns are compatible across all substitutes.

Q: What compliance certifications apply to the substitute parts?

A: Both IRS27952STRPBF and ICE1HS01G1XUMA1 are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and 8542.39.0001 HTSUS code.

Q: How do moisture sensitivity levels affect handling and storage?

A: IRS27952STRPBF carries MSL 2 (1 Year), identical to the original part. ICE1HS01G1XUMA1 carries MSL 3 (168 Hours), requiring more frequent baking and shorter shelf life. MSL 3 components must be stored in dry conditions and baked before reflow if exposed to ambient humidity for extended periods.

Q: Which substitute is recommended for new designs?

A: IRS27952STRPBF is recommended for designs requiring direct functional equivalence. ICE1HS01G1XUMA1 is suitable for new designs where offline isolated half-bridge conversion is the intended topology and the narrower temperature range is acceptable.