Texas Instruments UCC28740QDRQ1

Name: UCC28740QDRQ1
Brand: Texas Instruments
SKU: 6401673-UCC28740QDRQ1
Availability: InStock
Rating: 5 (1 reviews)

Part Number:: UCC28740QDRQ1

Manufacturer:: Texas Instruments

Ventron No:: 6401673-UCC28740QDRQ1

Description:: Automotive ultra low standby, flyback controller with integrated HV startup and optocoupler feedback

ECAD Model:

Datasheet:: ucc28740-q1

Specifications

Texas Instruments UCC28740QDRQ1 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments UCC28740QDRQ1.

Control mode
Secondary-side regulation
UVLO thresholds on/off (V)
21/7.75
Switching frequency (max) (kHz)
100
Features
Current limiting
Operating temperature range (°C)
-40 to 125
Rating
Automotive
TI functional safety category
Functional Safety-Capable
Device type
Controllers
Topology
Flyback

Description

The UCC28740-Q1 isolated-flyback power-supply controller regulates the output using an optical coupler to provide fast transient response to large-load steps.

An internal 700-V startup switch, dynamically controlled operating states, and a tailored modulation profile support ultra-low standby power without sacrificing startup time or output transient response.

Control algorithms in the UCC28740-Q1 allow operating efficiencies to meet or exceed applicable standards. The drive output interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley-switching reduces switching losses. Modulation of switching frequency and primary current-peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 100 kHz and always maintains control of the peak-primary current in the transformer. Protection features keep primary and secondary component stresses in check. A minimum switching frequency of 170 Hz facilitates the achievement of less than 10-mW no-load power.

Certification