UCC28781ARTWR

$1.52

Description：HIGH-DENSITY, ZERO-VOLTAGE SWITC
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:01195bc72ad3 Category: AC DC Converters, Offline Switchers Brand: Texas Instruments

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Product introduction

UCC28781ARTWR is listed in the AC DC Converters, Offline Switchers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is HIGH-DENSITY, ZERO-VOLTAGE SWITC. Review the specifications below when checking this part for your BOM.

AC DC Converters, Offline Switchers specifications for UCC28781ARTWR

Description：HIGH-DENSITY, ZERO-VOLTAGE SWITC
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Output Isolation：Isolated
Internal Switch(s)：-
Voltage - Breakdown：-
Topology：Flyback, Secondary Side SR
Voltage - Start Up：500 mV
Voltage - Supply (Vcc/Vdd)：14V ~ 34V
Duty Cycle：-
Frequency - Switching：500kHz
Fault Protection：Current Limiting, Over Power, Over Temperature, Over Voltage, Short Circuit
Control Features：Soft Start
Operating Temperature：-40°C ~ 125°C (TA)
Package / Case：24-WFQFN Exposed Pad
Supplier Device Package：24-WQFN (4x4)
Mounting Type：Surface Mount
Grade：-
Qualification：-
Power (Watts)：-

AC DC Converters, Offline Switchers datasheet and documents for UCC28781ARTWR

UCC28781ARTWR

AC DC Converters, Offline Switchers Overview

The UCC28781ARTWR is an automotive-grade, high-density zero-voltage switching (ZVS) flyback switch controller manufactured by Texas Instruments. Designed for isolated power supplies, it operates with a fixed switching frequency of 500 kHz and supports a maximum duty cycle of 99%. The device features an operating supply voltage range of 14 V to 34 V and delivers an output current capability of 4 A. It functions within a temperature range of -40°C to +125°C and utilizes a WQFN-24 package.

AC DC Converters, Offline Switchers Feature Summary

Supports zero-voltage switching (ZVS) operation to minimize switching losses and electromagnetic interference in flyback topologies.
Includes integrated high-side gate driver with specified rise and fall times for efficient power stage control.
Features primary-side regulation capabilities suitable for isolated constant-voltage and constant-current applications.

AC DC Converters, Offline Switchers Applications

Automotive high-density power supply designs
Isolated flyback converter implementations
Primary-side regulated power adapters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'ARTWR' against the official datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets required automotive qualification standards if used in safety-critical systems. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring high-frequency operation at 500 kHz to reduce passive component size. Consider the WQFN-24 package for thermal performance and board space constraints. Verify that the input voltage range of 14 V to 34 V aligns with the system's power source requirements.

AC DC Converters, Offline Switchers Part Context

This device belongs to the UCC28781 series of flyback controllers from Texas Instruments. It is engineered for high-efficiency power conversion in compact form factors. The series targets modern power supply designs where size, weight, and efficiency are critical parameters.

AC DC Converters, Offline Switchers Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers. Do not assume functional equivalence with other models without verifying pinout and electrical specifications.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

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Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

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Mode of Transportation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.