UCC28600_15 Datasheet, PDF (1/44 Pages) Texas Instruments – UCC28600 8-Pin Quasi-Resonant Flyback Green-Mode Controller

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UCC28600
SLUS646K – NOVEMBER 2005 – REVISED AUGUST 2015
UCC28600 8-Pin Quasi-Resonant Flyback Green-Mode Controller
1 Features
•1 Green-Mode Controller With Advanced Energy
Saving Features
• Quasi-Resonant Mode Operation for Reduced
EMI and Low Switching Losses (Low-Voltage
Valley Switching)
• Low Standby Current for Minimum System No-
Load Power Consumption
• Low Start-up Current: 25-μA Maximum
• Programmable Line and Load Over-Voltage
Protection
• Internal Over-Temperature Protection
• Current Limit Protection
– Cycle-by-Cycle Power Limit
– Primary-Side Over-Current Hiccup Restart
Mode
• 1-A Sink, –0.75-A Source TrueDrive™ Gate Drive
Output
• Programmable Soft-Start
• Green-Mode Status Pin (PFC Disable Function)
2 Applications
• Bias Supplies for LCD-Monitors, LCD-TV, PDP-
TV, and Set Top Boxes
• AC-to-DC Adapters and Off-Line Battery Chargers
• Energy Efficient Power Supplies up to 200 W
3 Description
The UCC28600 is a PWM controller with advanced
energy features to meet stringent world-wide energy
efficiency requirements.
UCC28600 integrates built-in advanced energy
saving features with high-level protection features to
provide cost-effective solutions for energy-efficient
power supplies. UCC28600 incorporates frequency
fold-back and green-mode operation to reduce the
switching losses at light-load and no-load conditions.
UCC28600 is available in the 8-pin SOIC package.
Operating junction temperature range is –40°C to
+105°C.
The UCC28600 Design Calculator, (SLVC104),
located in the Tools and Software section of the
UCC28600 product folder, provides a user-interactive
iterative process for selecting recommended
component values for an optimal design.
Device Information ⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCC28600
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Diagram
Primary
Secondary
C_BULK
R_SU
N_P
N_S
UCC28051
1 VO_SNS VCC 8
2 COMP DRV 7
3 MULTIN GND 6
4 CS
ZCD 5
C_B
N_B
18 V
C_SS
UCC28600
1 SS STATUS 8
2 FB
OVP 7
3 CS
VDD 6
Feedback
4 GND OUT 5
C_BP
R_PL
R_OVP1
C_VDD
R_OVP2
M₁
R_CS
TL431
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.