PT4562C Equivalent & Substitute Parts Reference

Part Overview

The PT4562C is an isolated module DC-DC converter manufactured by Texas Instruments, part of the Excalibur™ PT4560 series. This 30W converter accepts input voltage from 36V to 75V and delivers a regulated 5V output at up to 6A. The device is designed for commercial ITE applications and includes integrated protection features including remote on/off control, overcurrent protection (OCP), overtemperature protection (OTP), short-circuit protection (SCP), and undervoltage lockout (UVLO).

The PT4562C is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system availability, ensure design continuity, and support long-term product lifecycle management for applications currently utilizing this converter.

Substiute Parts

PT4562C

Texas InstrumentsIn Stock: 4079PT4562C Datasheet

Current PartRFQ

RP30-2405SFW

Recom PowerIn Stock: 1278RP30-2405SFW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PT4562C is determined by the following critical parameters:

Mandatory Matching Criteria:

• Output voltage: 5V (fixed)
• Output current capability: minimum 6A
• Power rating: 30W
• Isolation voltage: minimum 1.5 kV
• Operating temperature range: –40°C to +85°C
• RoHS3 compliance
• Protection features: OCP, OTP, SCP present

Allowable Variation Parameters:

• Input voltage range (substitute must accommodate the application's input voltage requirements)
• Efficiency (substitute may differ from 84%)
• Mounting type and package configuration (physical integration may differ)
• Isolation voltage (substitute may exceed minimum requirement)
• MSL rating (substitute may have different moisture sensitivity level)

The RP30-2405SFW from Recom Power qualifies as a substitute based on matching output specifications (5V, 6A, 30W), isolation voltage (1.6 kV exceeds minimum), temperature range, RoHS3 compliance, and integrated protection features. However, the input voltage range differs (9V–36V versus 36V–75V), which restricts its application to systems operating within the lower input voltage window.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Same Input Voltage Range):

The RP30-2405SFW is not a direct pin-for-pin or form-factor replacement for the PT4562C due to differences in mounting technology (surface mount versus through-hole) and package configuration (19-SMD versus 6-DIP). PCB layout modification is required.

Input Voltage Compatibility:

The RP30-2405SFW operates within a 9V–36V input range, which does not overlap the upper portion of the PT4562C's 36V–75V specification. Selection of the RP30-2405SFW is restricted to applications where the system input voltage remains below 36V. For systems requiring operation above 36V input, the RP30-2405SFW is not suitable.

Compliance and Certification:

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for commercial ITE applications. The RP30-2405SFW provides superior moisture sensitivity performance (MSL 1 versus MSL 3), reducing handling and storage constraints.

Performance Characteristics:

The RP30-2405SFW delivers 88% efficiency compared to the PT4562C's 84%, resulting in reduced thermal dissipation and improved power conversion efficiency. Isolation voltage is 1.6 kV, exceeding the PT4562C's 1.5 kV requirement.

Physical Integration:

The RP30-2405SFW's smaller footprint (50.8 × 25.4 × 10.2 mm) may provide space advantages in compact designs, but through-hole mounting requires different PCB design and assembly processes than the original surface-mount configuration.

Frequently Asked Questions (FAQ)

Q: Can the RP30-2405SFW replace the PT4562C in all applications?

A: No. The RP30-2405SFW is suitable only for applications where the input voltage remains within 9V–36V. The PT4562C supports input voltages up to 75V, which exceeds the RP30-2405SFW's maximum rating. Verify your system's input voltage specification before selection.

Q: What are the key differences between these two converters?

A: The primary differences are input voltage range (PT4562C: 36V–75V; RP30-2405SFW: 9V–36V), mounting type (surface mount versus through-hole), package configuration (19-SMD versus 6-DIP), efficiency (84% versus 88%), and physical dimensions. Output specifications (5V, 6A, 30W) and protection features are identical.

Q: Does the RP30-2405SFW require PCB redesign?

A: Yes. The RP30-2405SFW uses through-hole DIP packaging, while the PT4562C uses surface-mount SMD technology. PCB layout, footprint, and assembly process modifications are necessary.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the PT4562C and RP30-2405SFW are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for commercial applications.

Q: What is the isolation voltage difference, and does it matter?

A: The PT4562C provides 1.5 kV isolation; the RP30-2405SFW provides 1.6 kV. The RP30-2405SFW exceeds the isolation requirement, which is acceptable and may provide additional safety margin in high-voltage isolation applications.

Q: Which part has better moisture tolerance?

A: The RP30-2405SFW has MSL 1 (unlimited moisture sensitivity level), compared to the PT4562C's MSL 3 (168-hour limit). The RP30-2405SFW requires less stringent moisture control during storage and handling.

Q: Can I use the RP30-2405SFW in a 48V input system?

A: No. The RP30-2405SFW's maximum input voltage is 36V. A 48V input system exceeds this specification and would damage the converter. The PT4562C, rated to 75V input, is appropriate for 48V systems.

Q: Is the higher efficiency of the RP30-2405SFW significant?

A: The 4% efficiency improvement (88% versus 84%) reduces power dissipation and heat generation. In 30W applications, this translates to approximately 1.2W less thermal load, which may simplify thermal management in space-constrained designs.