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UCC28631 Datasheet(PDF) 1 Page - Texas Instruments

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Part # UCC28631
Description  High-Power Flyback Controller with Primary-Side Regulation and Peak-Power Mode
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCC28631 Datasheet(HTML) 1 Page - Texas Instruments

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SD
GND
VSENSE
CS
HV
VDD
DRV
UCC28630
1
2
3
4
8
6
5
EMC
Filter
t
o
VAC
VOUT
18
18.5
19
19.5
20
20.5
21
0
10
20
30
40
50
60
70
Output Power (W)
+5% Limit
115V/60 Hz
230V/50 Hz
±5% Limit
C001
“ 1% Typical
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
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.
UCC28630, UCC28631
UCC28632, UCC28633, UCC28634
SLUSBW3D – MARCH 2014 – REVISED DECEMBER 2017
UCC2863x, High-Power Flyback Controller
with Primary-Side Regulation and Peak-Power Mode
1
1 Features
1
High-Power, Primary-Side CV/CC Regulation
Continuous Conduction Mode (CCM) and
Discontinuous Conduction Mode (DCM) Operation
Built-In 700-V Start-Up Current Source
Active X-Capacitor Discharge (UCC28630 and
UCC28633)
Adjustable Constant-Current (CC) Mode Limiting
(except for UCC28630)
High Gate Drive Current 1-A Source and 2-A Sink
Low Power Modes for <30-mW System Standby
Best-In-Class Light Load (10%) Efficiency >85%
PSR design with no opto-coupler - can meet high
CM isolation & surge requirements
VDD OVP for independent indirect output OV
under open-feedback fault conditions
Peak-Power Mode for Transient Overload
Shutdown Pin Interface for External NTC
Protections: Overvoltage, Overcurrent, Over-
Temperature, Overload Timer (UCC28630), AC
Line UV, Brownout and Pin Protections
Frequency Dither to Ease EMI Compliance
(except the UCC28632)
Create a Custom Design Using the UCC2863x
With the WEBENCH® Power Designer
2 Applications
AC-DC Adapters for Notebook, Game Consoles,
Printers
Open Frame SMPS for Industrial, Printer, White
Goods, LCD Monitors
Energy Efficient AC-DC Supplies for Nominal
Power 10-W to 65-W, (with up to 200% transient
peak power)
3 Description
The UCC2863x targets high-power, primary-side
regulated flyback converters. The ability to operate in
both CCM and DCM make the device suitable for
applications with a wide power range. The peak
power mode allows transient peak power delivery up
to 200% of nominal rating, with only a 25% peak
current increase, maximizing transformer utilization.
The transformer bias winding is used to sense output
voltage for regulation, and for low-loss input voltage
sensing. Advanced sampling techniques allow CCM
operation,
and
deliver
excellent
output
voltage
regulation performance for opto-coupler-less designs
at power levels of 100 W and above.
A high-voltage current source enables fast and
efficient start-up. Advanced light-load modes are
deployed to reduce both controller and system power
consumption at no load and light load. These modes
enable potential system designs to meet 30-mW no-
load power for power designs up to 30 W nominal, 60
W peak.
The device has been designed for ease-of-use and
incorporates many features to enable a wide range of
designs. Extensive protection features are included to
simplify system design.
See the Device Comparison Table for details.
Device Information
PART NUMBER
PACKAGE
BODY SIZE
UCC28630
SOIC (7)
4.90 mm x 3.90 mm
UCC28631
UCC28632
UCC28633
UCC28634
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Typical Application Measured Regulation


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