UCC28712D Part Information

Details for UCC28712D by Texas Instruments

Semiconductors - ICs > Power Management ICs - PMIC > PWM Controllers

Part Description

The UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process 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, dynamicallycontrolled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response. Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive 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 controllers have a maximum switching frequency of 100 kHz and always maintain control of the peakprimary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28710, UCC28714 and UCC28715 allow the cable compensation to be programmed. The UCC28711, UCC28712 and UCC28713 devices allow remote temperature sensing using a negative temperature coefficient (NTC) resistor while providing fixed cablecompensation levels.

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Part Features

  • 100-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs
  • 700-V Start-Up Switch
  • < 10-mW No-Load Power
  • Clamped Gate-Drive Output for MOSFET
  • Frequency Jitter to Ease EMI Compliance
  • NTC Resistor Interface (UCC28711, UCC28712 and UCC28713) with Fixed Cable Compensation Options
  • Overvoltage, Low-Line, and Overcurrent Protection Functions
  • Primary-Side Regulation (PSR) Eliminates Opto- Coupler
  • Programmable Cable Compensation (UCC28710, UCC28714 and UCC28715)
  • Quasi-Resonant Valley-Switching Operation for Highest Overall Efficiency
  • SOIC-7 Package
  • Wide VDD Range Allows Small Bias Capacitor
  • u00b15% Voltage and Current Regulation Across Line and Load

Part Specifications

IC Function Constant Current / Constant Voltage Controller
Supply Voltage Min 9V
Supply Voltage Max 35V
IC Package Type SOIC
No. of Pins 7Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Controller IC Case Style SOIC
Frequency 100kHz
RoHS Compliant

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