UCC28880_16 Datasheet, PDF (1/37 Pages) Texas Instruments – Low Quiescent Current Off-Line Converter

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UCC28880
SLUSC05C – JULY 2014 – REVISED JANUARY 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
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
35
1 GND DRAIN 8
30
2 GND
3 FB
NC 6
25
VIN
4 VDD HVIN 5
20
15
+
10
VOUT
-
5
1.2-W Buck No-load Input Power
UCC28880 Power Consumption
0
50
100
150
200
250
300
AC Input Voltage (V_RMS)
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.