UCC28730-Q1

ACTIVE

Zero-power standby PSR Flyback controller for automotive

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Product details

Parameters

Control method Primary-side regulation Duty cycle (Max) (%) 99 Frequency (Max) (kHz) 83 UVLO thresholds on/off (V) 21/7 Features PSR, DCM, HV Start-up, Low Power, Light Load Efficiency, Current Limiting, Thermal Shutdown, Green Mode, Input Line Monitor, Leading Edge Blanking, Soft Start Operating temperature range (C) -40 to 125 Rating Automotive open-in-new Find other Flyback controllers

Package | Pins | Size

SOIC (D) 7 29 mm² 4.9 x 6 open-in-new Find other Flyback controllers

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Device Temperature Grade 1: -40⁰C to +125⁰C
    • Device HBM Classification Level 2: ±2 kV
    • Device CDM Classification Level C4B: ±750 V
  • Enables Zero-Power (< 5 mW) Standby Consumption
  • Primary-Side Regulation (PSR) Eliminates Opto-coupler
  • ±5% Voltage Regulation and Current Regulation Across Line and Load
  • 700-V Start-up Switch
  • 83-kHz Maximum Switching Frequency Enables Low Stand-by Power Charger Designs
  • Resonant-Ring Valley-Switching Operation for Highest Overall Efficiency
  • Frequency-Dither to Ease EMI Compliance
  • Clamped Gate-Drive Output for MOSFET
  • Over-Voltage, Low-Line, and Over-Current Protection Functions
  • Programmable Cable Compensation
  • SOIC-7 Package

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Description

The UCC28730-Q1 isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. A minimum switching frequency of 30 Hz facilitates achieving less than 5 mW of no-load power. This device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

An internal 700-V start-up switch, dynamically- controlled operating states and a tailored modulation profile support ultra-low stand-by power without sacrificing start-up time or output transient response. Control algorithms in the UCC28730-Q1 allow operating efficiencies to meet or exceed applicable standards. Discontinuous conduction mode (DCM) operation with valley-switching reduces switching losses. Modulation of the switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet UCC28730-Q1 Zero-Power Standby PSR Flyback Controller for Automotive datasheet Oct. 12, 2016
Application notes Increase Traction Inverter System Robustness With a HV to LV Backup Supply (Rev. B) Oct. 09, 2019
Application notes Minimize Standby Consumption for UCC287XX Family Aug. 01, 2019
White papers Driving the future of HEV/EV with high-voltage solutions (Rev. B) May 16, 2018
User guides Using the UCC28730EVM-552 10-W Adaptor Module With PSR and Wake-Up Monitor Feb. 06, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
99
Description

The UCC28730EVM-552 evaluation module is a 10-W off-line discontinuous mode (DCM) flyback converter that provides constant-voltage (CV) and constant-current (CC) output regulation without the use of an optical coupler.  The primary side controller detects a wake-up signal from the secondary (...)

Features
  • Less than 5mW of no-load power
  • Primary side regulation eliminates opto-coupler
  • Wake-up detection helps minimize no-load switching frequency and output capacitance
  • +/-5% voltage and current regulation across line and load
  • Resonant ring valley switching operation for highest overall efficiency

Design tools & simulation

SIMULATION MODELS Download
SLUM527.ZIP (103 KB) - PSpice Model
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide
CALCULATION TOOLS Download
SLUC579A.ZIP (77 KB)

Reference designs

REFERENCE DESIGNS Download
High voltage buck converter reference design for E-motorcycle BMS applications
PMP22557 — This non-isolated buck converter provides a fixed output of 12V at 400mA for BMS applications. It operates over an input voltage range of 50Vdc – 150Vdc after a startup greater than 40V. Operating in discontinuous conduction mode (DCM), this converter utilizes the UCC28730 controller, which is (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High voltage buck converter reference design for BMS applications
PMP22487 — This non-isolated buck converter provides a fixed output of 14 V at 130 mA for BMS applications. It operates over an input voltage range of 18 Vdc – 144 Vdc after a startup greater than 23 V. Operating in discontinuous conduction mode (DCM), this converter utilizes the UCC28730 controller (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
15-W flyback reference design for automotive inverter power
PMP22288 — his reference design uses the UCC28730-Q1 flyback controller to produce an isolated 15-V output. The design is capable of 0.33 A from a 40-V to 250-Vdc input and 1 A from a 250-V to 550-Vdc input. This power system is designed for an inverter bias supply application and is an automotive-qualified (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 7 View options

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