PFS7328H PFC Controller IC Equivalent & Substitute Parts

Part Overview

The PFS7328H is a Power Factor Correction (PFC) controller IC manufactured by Power Integrations, operating in Continuous Conduction Mode (CCM). This device is classified as a Power Management Integrated Circuit (PMIC) and is designed for applications requiring active power factor correction with CCM topology.

The PFS7328H carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance where this controller is currently deployed.

Substiute Parts

PFS7328H

Power IntegrationsIn Stock: 1394PFS7328H Datasheet

Current PartRFQ

PFS7528H

Power IntegrationsIn Stock: 1629PFS7528H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PFS7328H is determined by the following critical parameters:

Mandatory Matching Criteria:

• Operational Mode: Continuous Conduction (CCM)
• Manufacturer Series: HiperPFS™
• Package Type: eSIP-16D (16-SSIP, 13 Leads, Exposed Pad, Formed Leads)
• Mounting Type: Through Hole
• Pin Configuration: Electrical and mechanical compatibility

Allowable Parameter Variations:

• Supply Voltage Range: The substitute may have an equal or wider voltage specification, provided the minimum and maximum ratings encompass the original part's range (10.2V ~ 13.2V)
• Operating Temperature Range: The substitute may have an equal or extended temperature range
• Switching Frequency: The substitute may have specified switching frequency characteristics
• Product Status: Active status substitutes are preferred for obsolete parts

The PFS7528H qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

PFS7528H as Primary Substitute:

The PFS7528H is the qualified substitute for the obsolete PFS7328H. Selection of this substitute is based on the following engineering factors:

1. Functional Equivalence: Both devices operate in CCM mode within the HiperPFS™ series, ensuring functional compatibility in PFC applications.

2. Package Compatibility: Identical eSIP-16D package configuration (16-SSIP, 13 Leads, Exposed Pad, Formed Leads) with through-hole mounting enables direct board-level replacement without layout modifications.

3. Electrical Compatibility: The PFS7528H supply voltage range (10.2V ~ 15V) encompasses the PFS7328H specification (10.2V ~ 13.2V), ensuring operation within the original design envelope.

4. Enhanced Specifications: The PFS7528H provides extended operating temperature range (-40°C ~ 150°C versus -40°C ~ 125°C) and specified switching frequency characteristics (22kHz ~ 123kHz), offering improved performance margins for legacy system support.

5. Compliance Status: Both devices maintain RoHS compliance, REACH unaffected status, and identical MSL ratings, ensuring regulatory and environmental compatibility.

6. Product Availability: The PFS7528H carries Active product status with confirmed inventory availability, providing long-term supply chain security for replacement and new production requirements.

Frequently Asked Questions (FAQ)

Q1: Can the PFS7528H be used as a direct replacement for the PFS7328H in existing designs?

A: Yes. The PFS7528H is electrically and mechanically compatible with the PFS7328H. Both devices share identical package configuration (eSIP-16D), pin count (16-SSIP with 13 functional leads), mounting type (through-hole), and operational mode (CCM). No board redesign or layout modification is required.

Q2: What are the key differences between PFS7328H and PFS7528H?

A: The primary differences are: (1) Product Status—PFS7328H is Obsolete while PFS7528H is Active; (2) Supply Voltage Range—PFS7528H extends to 15V versus 13.2V maximum for PFS7328H; (3) Operating Temperature—PFS7528H extends to 150°C versus 125°C for PFS7328H; (4) Switching Frequency—PFS7528H specifies 22kHz ~ 123kHz operation. All differences represent equal or enhanced specifications.

Q3: Are there any pin configuration differences between these parts?

A: No. Both the PFS7328H and PFS7528H use the eSIP-16D package with 13 functional leads and an exposed pad. Pin configuration is identical, enabling direct socket compatibility.

Q4: What is the impact of the wider supply voltage range in the PFS7528H?

A: The PFS7528H accepts supply voltages up to 15V, compared to 13.2V for the PFS7328H. This wider specification is backward compatible—designs operating within the original 10.2V ~ 13.2V range will function identically. The extended range provides additional design flexibility for new applications.

Q5: Does the extended temperature range of the PFS7528H affect reliability?

A: No. The extended operating temperature range (-40°C ~ 150°C) represents an enhanced specification. Designs operating within the original PFS7328H temperature envelope (-40°C ~ 125°C) will experience equivalent or improved reliability margins.

Q6: Are both parts RoHS compliant?

A: Yes. Both the PFS7328H and PFS7528H are RoHS Compliant with REACH Unaffected status and MSL rating of 1 (Unlimited), ensuring regulatory compliance for all applications.

Q7: What is the switching frequency specification for the PFS7528H?

A: The PFS7528H operates at 22kHz ~ 123kHz switching frequency. The PFS7328H does not specify switching frequency in the provided data. Both devices operate in CCM mode, which determines frequency characteristics based on circuit design parameters.

Q8: Is inventory availability a consideration for part selection?

A: Yes. The PFS7528H has confirmed inventory of 1619 pieces in stock with Active product status, ensuring long-term availability. The PFS7328H, with Obsolete status and 1304 pieces in stock, has limited future availability. For new designs and long-term production, the PFS7528H is the recommended selection.