PFS727EG Power Factor Correction Controller - Equivalent & Substitute Parts

Part Overview

The PFS727EG is a Power Factor Correction (PFC) controller IC manufactured by Power Integrations, operating in Continuous Conduction Mode (CCM). This device is designed for power management applications requiring PFC functionality in the 24kHz to 95kHz switching frequency range. The PFS727EG is classified as an obsolete product, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part operates with a supply voltage range of 10V to 12V and is housed in a 7-lead eSIP package with through-hole mounting.

Substiute Parts

PFS727EG

Power IntegrationsIn Stock: 836PFS727EG Datasheet

Current PartRFQ

PFS7537H

Power IntegrationsIn Stock: 874PFS7537H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PFS727EG is determined by compatibility across the following critical parameters:

Operating Mode Requirement: Both the main part and substitute must operate in Continuous Conduction (CCM) mode to maintain equivalent PFC functionality.

Manufacturer Consistency: Substitutes are limited to Power Integrations HiperPFS™ series devices to ensure design compatibility and performance characteristics.

Switching Frequency Overlap: The substitute switching frequency range must encompass or overlap with the original part's operating frequency band (24kHz ~ 95kHz).

Supply Voltage Compatibility: The substitute supply voltage range must accommodate the original specification of 10V ~ 12V.

Temperature Rating: The substitute must support the original operating temperature range of -40°C ~ 125°C or exceed it.

Package and Mounting: Through-hole mounting with exposed pad configuration is required for mechanical and thermal compatibility.

Compliance Standards: RoHS compliance and REACH unaffected status must be maintained.

The PFS7537H meets these substitution criteria as an active product within the HiperPFS™ series, offering extended frequency range, higher supply voltage capability, and improved temperature performance.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The PFS727EG is classified as obsolete, making long-term availability uncertain. The PFS7537H is an active product within the same HiperPFS™ series, ensuring continued manufacturing support and supply chain reliability.

Electrical Parameter Compatibility: The PFS7537H operates within extended ranges for switching frequency (22kHz ~ 123kHz), supply voltage (10.2V ~ 15V), and temperature (-40°C ~ 150°C). These extended ranges fully encompass the original PFS727EG specifications, ensuring functional compatibility in existing applications.

Regulatory Compliance: Both parts maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production transitions.

Package Consideration: The PFS7537H uses a 16-lead eSIP package compared to the 7-lead eSIP-7G package of the PFS727EG. This difference requires PCB layout modification and schematic redesign. The increased lead count provides additional functionality and control options in the substitute device.

Supply Chain Status: The PFS7537H has 861 pieces in current inventory as new original stock, providing immediate availability for production requirements.

Frequently Asked Questions (FAQ)

Q: Can the PFS7537H directly replace the PFS727EG without PCB modifications?

A: No. The PFS7537H uses a 16-lead eSIP package versus the 7-lead eSIP-7G package of the PFS727EG. PCB layout and schematic redesign are required. However, the electrical operating parameters are fully compatible.

Q: What is the primary reason for substituting the PFS727EG?

A: The PFS727EG is classified as obsolete. The PFS7537H is an active product in the same HiperPFS™ series, ensuring long-term availability and manufacturing support.

Q: Are the switching frequency ranges compatible?

A: Yes. The PFS7537H switching frequency range of 22kHz ~ 123kHz encompasses the original PFS727EG range of 24kHz ~ 95kHz, ensuring compatible operation.

Q: Does the PFS7537H support the original supply voltage specification?

A: Yes. The PFS7537H supply voltage range of 10.2V ~ 15V fully encompasses the original PFS727EG specification of 10V ~ 12V.

Q: What is the temperature rating difference?

A: The PFS7537H operates from -40°C ~ 150°C, exceeding the original PFS727EG range of -40°C ~ 125°C. This provides improved thermal performance margin.

Q: Are both parts RoHS compliant?

A: Yes. Both the PFS727EG and PFS7537H are RoHS compliant and REACH unaffected.

Q: What is the lead count difference between these parts?

A: The PFS727EG has 6 functional leads in a 7-lead package, while the PFS7537H has 13 functional leads in a 16-lead package. The additional leads in the substitute provide enhanced control and monitoring capabilities.

Q: Is the PFS7537H currently available?

A: Yes. The PFS7537H is an active product with 861 pieces in current inventory as new original stock.