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UCC28710 Datasheet Preview

UCC28710 Datasheet

Constant-Current Controller

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UCC28710, UCC28711, UCC28712, UCC28713
SLUSB86C – NOVEMBER 2012 – REVISED JUNE 2017
UCC2871x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
1 Features
1 < 10-mW No-Load Power
• Primary-Side Regulation (PSR) Eliminates Opto-
Coupler
• ±5% Voltage and Current Regulation Across Line
and Load
• 700-V Start-Up Switch
• 100-kHz Maximum Switching Frequency Enables
High-Power Density Charger Designs
• Resonant Valley-Switching Operation for Highest
Overall Efficiency
• Frequency Jitter to Ease EMI Compliance
• Wide VDD Range Allows Small Bias Capacitor
• Clamped Gate-Drive Output for MOSFET
• Overvoltage, Low-Line, and Overcurrent
Protection Functions
• Programmable Cable Compensation (UCC28710)
• NTC Resistor Interface (UCC28711, UCC28712
and UCC28713) with Fixed Cable Compensation
Options
• SOIC-7 Package
• Create a Custom Design Using the UCC28710
With the WEBENCH® Power Designer
2 Applications
• USB-Compliant Adapters and Chargers for
Consumer Electronics
– Smart Phones
– Tablet Computers
– Cameras
• Standby Supply for TV and Desktop
• White Goods
An internal 700-V start-up switch, dynamically-
controlled 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 peak-
primary current in the transformer. Protection features
help keep primary and secondary component
stresses in check. The UCC28710 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 cable-
compensation levels.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
UCC28710
UCC28711
UCC28712
SOIC (7)
4.91 mm × 3.90 mm
UCC28713
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application
VOUT
3 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.
VAC
VAUX
UCC28710
VDD HV
VS DRV
CBC CS
GND
UDG-12200
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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UCC28710 Datasheet Preview

UCC28710 Datasheet

Constant-Current Controller

No Preview Available !

UCC28710, UCC28711, UCC28712, UCC28713
SLUSB86C – NOVEMBER 2012 – REVISED JUNE 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Typical Characteristics .............................................. 6
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 12
9 Application and Implementation ........................ 17
9.1 Application Information............................................ 17
9.2 Typical Application .................................................. 17
10 Power Supply Recommendations ..................... 23
11 Layout................................................................... 23
11.1 Layout Guidelines ................................................. 23
11.2 Layout Example .................................................... 25
12 Device and Documentation Support ................. 26
12.1 Device Support...................................................... 26
12.2 Documentation Support ........................................ 28
12.3 Receiving Notification of Documentation Updates 28
12.4 Community Resources.......................................... 28
12.5 Trademarks ........................................................... 28
12.6 Electrostatic Discharge Caution ............................ 29
12.7 Glossary ................................................................ 29
13 Mechanical, Packaging, and Orderable
Information ........................................................... 29
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (July 2015) to Revision C
Page
• Deleted all references to the UCC28714, UCC28715, and UCC28716 devices.................................................................... 1
• Deleted quasi from quasi-resonant......................................................................................................................................... 1
• Added the Development Support, Receiving Notification of Documentation Updates, and Community Resources
sections................................................................................................................................................................................. 26
Changes from Revision A (December 2014) to Revision B
Page
• Updated Layout Guidelines section...................................................................................................................................... 23
Changes from Original (November 2012) to Revision A
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
2 Submit Documentation Feedback
Copyright © 2012–2017, Texas Instruments Incorporated
Product Folder Links: UCC28710 UCC28711 UCC28712 UCC28713


Part Number UCC28710
Description Constant-Current Controller
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