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UC2875-EP Datasheet Phase Shift Resonant Controller

Manufacturer: Texas Instruments

Download the UC2875-EP datasheet PDF. This datasheet also includes the UC2875-SP variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (UC2875-SP-etcTI.pdf) that lists specifications for multiple related part numbers.

General Description

/ordering information The UC2875 integrated circuit implements control of a bridge power stage by phase-shifting the switching of one half-bridge with respect to the other, allowing constant frequency pulse-width modulation in combination with resonant, zero-voltage switching for high efficiency performance at high frequencies.

This circuit may be configured to provide control in either voltage or current mode operation, with a separate over-current shutdown for

Overview

ą D Controlled Baseline − One Assembly/Test Site, One Fabrication Site D Extended Temperature Performance of −25°C to 110°C D Enhanced Diminishing Manufacturing Sources (DMS) Support D Enhanced Product Change Notification D Qualification Pedigree† D Zero to 100% Duty Cycle Control D Programmable Output Turn-On Delay D Compatible with Voltage or Current Mode Topologies D Practical Operation at Switching Frequencies to 1 MHz D Four 2 A Totem Pole Outputs D 10 MHz Error Amplifier D Under-Voltage Lockout † Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range.

This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life.

Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.

Key Features

  • include an undervoltage lockout which maintains all outputs in an active-low state until the supply reaches a 10.75 V threshold. 1.5 V hysteresis is built in for reliable, boot-strapped chip supply. Over-current protection is provided, and will latch the outputs in the OFF state within 70 ns of a fault. The current-fault circuitry implements full-cycle restart operation. Additional features include an error amplifier with band-width in excess of 7 MHz, a 5 V reference, provisions for soft-starti.

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