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UCC28730-Q1

ACTIVE

Zero-power standby PSR flyback controller for automotive

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Data sheet

UCC28730-Q1

ACTIVE
Data sheet Order now

Product details

Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Automotive TI functional safety category Functional Safety-Capable
Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Automotive TI functional safety category Functional Safety-Capable
SOIC (D) 7 29.4 mm² 4.9 x 6
  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40⁰C to +125⁰C
    • Device HBM Classification Level 2: ±2 kV
    • Device CDM Classification Level C4B: ±750 V
  • Functional Safety-Capable
  • 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 with 30-V Minimum Start-up Voltage
  • 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
  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40⁰C to +125⁰C
    • Device HBM Classification Level 2: ±2 kV
    • Device CDM Classification Level C4B: ±750 V
  • Functional Safety-Capable
  • 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 with 30-V Minimum Start-up Voltage
  • 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

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 achieves 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.

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 achieves 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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UCC28730 ACTIVE Zero standby PSR flyback controller with CVCC and wake-up monitoring This is the non-automotive variant

Technical documentation

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Type Title Date
* Data sheet UCC28730-Q1 Zero-Power Standby PSR Flyback Controller for Automotive datasheet (Rev. B) PDF | HTML 30 Nov 2020
White paper Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters PDF | HTML 11 Oct 2023
Application brief Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C) PDF | HTML 16 Feb 2023
Functional safety information UCC28730-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 18 Aug 2020
Application note Minimize Standby Consumption for UCC287XX Family 01 Aug 2019
White paper Driving the future of HEV/EV with high-voltage solutions (Rev. B) 16 May 2018
EVM User's guide Using the UCC28730EVM-552 10-W Adaptor Module With PSR and Wake-Up Monitor 06 Feb 2015

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