Off-Line Converter. UCC28880 Datasheet

UCC28880 Converter. Datasheet pdf. Equivalent

UCC28880 Datasheet
Recommendation UCC28880 Datasheet
Part UCC28880
Description 100-mA Low Quiescent Current Off-Line Converter
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UCC28880
SLUSC05D – JULY 2014 – REVISED MAY 2016
UCC28880 700-V, 100-mA Low Quiescent Current Off-Line Converter
1 Features
1 Integrated Power MOSFET (Switch) Rated to
700-V Drain-to-Source Voltage
• Integrated High-Voltage Current Source for
Internal Low-Voltage Supply Generation
• Soft Start
• Self-Biased Switcher (Start Up and Operation
Directly from Rectified Mains Voltage)
• Supports Buck, Buck-Boost and Flyback
Topologies
• <100-μA Device Quiescent Current
• Robust Performance with Inductor Current
Runaway Prevention
• Thermal Shutdown
• Protection
– Current Limit
– Overload and Output Short Circuit
• Create a Custom Design Using the UCC28880
with the WEBENCH Power Designer
2 Applications
• AC-to-DC Power Supplies
(Output Current Up to 100 mA for CCM;
70 mA for DCM)
• Metering, Home Automation, Infrastructure SMPS
• Low-Side Buck Topology for TRIAC Driver
• Appliances, White Goods and LED Drivers
3 Description
The UCC28880 integrates the controller and a 700-V
power MOSFET into one monolithic device. The
device also integrates a high-voltage current source,
enabling start up and operation directly from the
rectified mains voltage.
The low quiescent current of the device enables
excellent efficiency. With the UCC28880 the most
common converter topologies, such as buck, buck-
boost and flyback can be built using a minimum
number of external components.
The UCC28880 incorporates a soft-start feature for
controlled start up of the power stage which
minimizes the stress on the power-stage
components.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCC28880
SOIC (7)
5.00 mm × 6.20 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Standby Power vs Input Voltage
40
UCC28880
1 GND DRAIN 8
2 GND
3 FB
NC 6
VIN 4 VDD HVIN 5
35
30
25
20
15
+
VOUT
-
10
5
1.2-W Buck No-load Input Power
UCC28880 Power Consumption
0
50 100 150 200 250 300
AC Input Voltage (VRMS)
D203
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.



Texas Instruments UCC28880
UCC28880
SLUSC05D – JULY 2014 – REVISED MAY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 3
5 Pin Configuration and Functions ......................... 5
6 Specifications......................................................... 6
6.1 Absolute Maximum Ratings ...................................... 6
6.2 ESD Ratings.............................................................. 6
6.3 Recommended Operating Conditions....................... 7
6.4 Thermal Information .................................................. 7
6.5 Electrical Characteristics........................................... 8
6.6 Switching Characteristics .......................................... 8
6.7 Typical Characteristics .............................................. 9
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 12
7.4 Device Functional Modes........................................ 14
8 Application and Implementation ........................ 18
8.1 Application Information............................................ 18
8.2 Typical Application .................................................. 18
9 Power Supply Recommendations...................... 32
10 Layout................................................................... 32
10.1 Layout Guidelines ................................................. 32
10.2 Layout Example .................................................... 32
11 Device and Documentation Support ................. 33
11.1 Custom Design with WEBENCH Tools................. 33
11.2 Receiving Notification of Documentation Updates 33
11.3 Trademarks ........................................................... 33
11.4 Electrostatic Discharge Caution ............................ 33
11.5 Glossary ................................................................ 33
12 Mechanical, Packaging, and Orderable
Information ........................................................... 33
2 Submit Documentation Feedback
Product Folder Links: UCC28880
Copyright © 2014–2016, Texas Instruments Incorporated



Texas Instruments UCC28880
www.ti.com
4 Revision History
UCC28880
SLUSC05D – JULY 2014 – REVISED MAY 2016
Changes from Revision C (January 2016) to Revision D
Page
• Changed HVIN off state current's MAX value from 12 µA to 36 µA. ..................................................................................... 8
• Changed Equation 2 ............................................................................................................................................................ 19
Changes from Revision B (September 2015) to Revision C
Page
• Changed the documents title from, "UCC28880 700-V Lowest Quiescent Current Off-Line Switcher", to "700-V, 100-
mA Low Quiescent Current Off-Line Converter". .................................................................................................................. 1
• Changed Figure 16 image. .................................................................................................................................................. 18
• Changed Equation 14........................................................................................................................................................... 22
• Changed Figure 19 image. ................................................................................................................................................... 25
• Changed Figure 22 image. .................................................................................................................................................. 28
• Changed Figure 23 image. ................................................................................................................................................... 28
• Changed Figure 24 image. ................................................................................................................................................... 29
• Changed Figure 25 image. ................................................................................................................................................... 29
• Changed Figure 26 image. ................................................................................................................................................... 30
• Changed Figure 27 image. ................................................................................................................................................... 30
• Changed Figure 28 image. ................................................................................................................................................... 31
Changes from Revision A (October 2014) to Revision B
Page
• Added Thermal Shutdown feature.......................................................................................................................................... 1
• Changed Applications features. ............................................................................................................................................. 1
• Changed Power vs Input Voltage image. ............................................................................................................................... 1
• Changed Layout Guidelines section....................................................................................................................................... 2
• Changed TJ specification and added note 4, 5 and 6. .......................................................................................................... 6
• Added IVDD ratings. ................................................................................................................................................................ 6
• Added HVIN pin exclusion. .................................................................................................................................................... 6
• Added VDD clamp voltage specification. .............................................................................................................................. 8
• Changed Maximum switch on/off time specification. ............................................................................................................. 8
• Added inductor current run away protection time threshold specification. ............................................................................ 8
• Added RTHJA vs Copper Area image. .................................................................................................................................. 10
• Changed Feature Description section. ................................................................................................................................ 12
• Changed PWM Controller section. ...................................................................................................................................... 15
• Added Current Limit details. ................................................................................................................................................. 16
• Changed Figure 15............................................................................................................................................................... 17
• Changed Equation 1............................................................................................................................................................. 17
• Changed Over-Temperature Protection section to Thermal Shutdown section. .................................................................. 17
• Changed Universal Input, 12-V, 100-mA Output Low-Side Buck image.............................................................................. 18
• Changed Equation 2............................................................................................................................................................. 19
• Changed .............................................................................................................................................................................. 20
• Changed Freewheeling Diode (D1) section. ....................................................................................................................... 21
• Changed Equation 5............................................................................................................................................................. 21
• Changed Equation 7.. ........................................................................................................................................................... 22
• Changed Equation 9............................................................................................................................................................. 22
• Changed Equation 10........................................................................................................................................................... 22
Copyright © 2014–2016, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Links: UCC28880





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