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Details for UCC28712D by Texas Instruments
Semiconductors - ICs > Power Management ICs - PMIC > PWM Controllers
CV & CC FLYBACK CTRL 100KHZ SOIC-7
UCC28712D image

UCC28712D by Texas Instruments

CV & CC FLYBACK CTRL 100KHZ SOIC-7
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 Information
UCC28712D image
RoHS Compliant
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.
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
Alternate Descriptions
Current Mode PWM Controller 25mA 7-Pin SOIC Tube Avnet America
Current Mode PWM Controller 25mA 7-Pin SOIC Tube Avnet Europe