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UCC25800B-Q1 Datasheet Ultra-low Emi Transformer Driver

Manufacturer: Texas Instruments

Overview: UCC25800-Q1, UCC25800B-Q1 SLUSDX3C – NOVEMBER 2020 – REVISED AUGUST 2023 UCC25800-Q1 Ultra-low EMI Transformer Driver for Isolated Bias Supplies.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The UCC25800-Q1 ultra-low EMI transformer driver integrates the switching power stage, the control, and the protection circuits to simplify isolated bias supply designs.

It allows the design to utilize a transformer with higher leakage inductance, but much smaller parasitic primary-to-secondary capacitance.

This lowcapacitance transformer design enables an order of magnitude reduction in the common-mode current injection through the bias transformer.

Key Features

  • High-efficiency half-bridge transformer driver.
  • Ultra-low EMI with low interwinding capacitance.
  • Smaller and lower-cost transformer.
  • Programmable frequency: 0.1 MHz to 1.2 MHz.
  • Wide input voltage range: 9 V to 34 V.
  • 9 W from 34-V input.
  • 6 W from 24-V input.
  • 4 W from 15-V input.
  • Automatic dead-time adjustment with maximum dead-time programming.
  • External clock synchronization for low noise.
  • Robust p.

UCC25800B-Q1 Distributor

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