TPS40020PWP Equivalent & Substitute Parts

Part Overview

The TPS40020PWP is a buck regulator positive output step-down DC-DC controller IC manufactured by Texas Instruments in a 16-HTSSOP package. This device functions as a transistor driver for step-down topology applications with a single output phase. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term product support.

Substiute Parts

TPS40020PWP

Texas InstrumentsIn Stock: 31692TPS40020PWP Datasheet

Current PartRFQ

TPS62876QWRZVRQ1

Texas InstrumentsIn Stock: 1130TPS62876QWRZVRQ1 Datasheet

MFR RecommendedRFQ

TPS40303DRCT

Texas InstrumentsIn Stock: 1492TPS40303DRCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS40020PWP is determined by the following critical parameters:

• Topology & Function: Buck (step-down) regulator with positive output configuration
• Output Type: Transistor driver for external power stage control
• Single Output Phase: Single-phase operation requirement
• Supply Voltage Range: Input voltage compatibility (2.25V ~ 5.5V minimum requirement)
• Switching Frequency Range: 100kHz ~ 1MHz operational capability
• Control Features: Presence of Enable, Power Good, and Soft Start functions
• Synchronous Rectifier Support: Yes
• Package Compatibility: Surface mount with thermal management capability
• Compliance: ROHS3 compliant, MSL 2 rating

The two substitute parts listed (TPS40303DRCT and TPS62876QWRZVRQ1) maintain functional equivalence in buck topology and positive output configuration. However, each presents distinct trade-offs in supply voltage range, switching frequency, output type, and thermal operating range that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

TPS40303DRCT is an active product suitable for designs requiring a transistor driver output type with extended supply voltage range (3V ~ 20V). This part maintains RoHS3 compliance and MSL 2 rating consistent with the TPS40020PWP. The fixed 300kHz switching frequency and absence of clock sync capability represent functional differences. The 10-VFDFN package requires PCB layout redesign. This substitute is appropriate for applications where the higher supply voltage range and extended operating temperature (to 125°C) provide design advantages.

TPS62876QWRZVRQ1 is an active product with automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C ~ 125°C). This part features adjustable output type and higher switching frequency options (1.5MHz ~ 3MHz), differing from the transistor driver architecture of the TPS40020PWP. The 24-PowerWFQFN package requires significant PCB layout modification. This substitute is suitable for applications requiring automotive qualification and higher frequency operation, with the understanding that output type and package footprint differ substantially.

Both substitutes maintain active product status, ensuring long-term availability and supply chain stability compared to the Last Time Buy status of the TPS40020PWP.

Frequently Asked Questions (FAQ)

Q: Can TPS40303DRCT directly replace TPS40020PWP in existing designs?

A: Both parts function as transistor driver buck controllers with positive output configuration. However, the TPS40303DRCT operates at a fixed 300kHz switching frequency (versus 100kHz ~ 1MHz for TPS40020PWP) and lacks clock sync capability. The 10-VFDFN package differs from the 16-PowerTSSOP, requiring PCB layout redesign. Electrical compatibility exists within the overlapping supply voltage range (3V ~ 5.5V), but application-specific validation is necessary.

Q: What are the key differences between TPS40303DRCT and TPS62876QWRZVRQ1?

A: TPS40303DRCT maintains transistor driver output type with fixed 300kHz operation, while TPS62876QWRZVRQ1 features adjustable output type with selectable switching frequencies (1.5MHz ~ 3MHz). TPS40303DRCT supports supply voltages up to 20V; TPS62876QWRZVRQ1 supports up to 6V. TPS62876QWRZVRQ1 includes automotive qualification (AEC-Q100). Package footprints differ significantly (10-VFDFN versus 24-PowerWFQFN).

Q: Is the TPS40020PWP still available for new designs?

A: The TPS40020PWP is in Last Time Buy status, indicating end-of-life production. New designs should transition to active products such as TPS40303DRCT or TPS62876QWRZVRQ1 to ensure long-term supply chain reliability and support.

Q: What supply voltage range is common to all three parts?

A: The overlapping supply voltage range is 3V ~ 5.5V. TPS40020PWP operates from 2.25V ~ 5.5V; TPS40303DRCT from 3V ~ 20V; TPS62876QWRZVRQ1 from 2.7V ~ 6V.

Q: Do all three parts support synchronous rectification?

A: Yes, all three parts include synchronous rectifier support, enabling efficient step-down regulation with reduced power dissipation.

Q: What is the impact of package differences on PCB design?

A: TPS40020PWP uses 16-PowerTSSOP (0.173" width); TPS40303DRCT uses 10-VFDFN (3x3mm); TPS62876QWRZVRQ1 uses 24-PowerWFQFN (4.05x3.05mm). Each package requires distinct PCB footprint, thermal via placement, and layout routing. Thermal management characteristics differ based on package geometry and exposed pad design.

Q: Are all three parts RoHS3 compliant?

A: TPS40020PWP and TPS40303DRCT are explicitly ROHS3 compliant. RoHS status for TPS62876QWRZVRQ1 is not specified in the provided data.