UCC25230 Converter Datasheet

UCC25230 Datasheet, PDF, Equivalent


Part Number

UCC25230

Description

0.2-A Output Switching Converter

Manufacture

etcTI

Total Page 22 Pages
Datasheet
Download UCC25230 Datasheet


UCC25230
UCC25230
www.ti.com
SLUSAQ6B – NOVEMBER 2011 – REVISED APRIL 2012
12-V to 100-V Input, 0.2-A Output Switching Converter
Check for Samples: UCC25230
FEATURES
1
2 Highly Integrated Converter Operating as a
Buck, or Isolated Forward-Flyback, Flybuck™
• Wide Operating Input Voltage Range from 12 V
to 100 V, 105-V Surge.
• Up to 0.2-A Output Current
• 9-V Always Available VDD Output with up to 2-
mA Current Capability
• Thermally Enhanced 4-mm x 4-mm SON-8/S-
PVSON-N8 (DRM) Package
• Internally Set Fixed 380-kHz Switching
Frequency
• Internal 2-ms Duration Soft Start
• Voltage Mode Control with Input Feed Forward
Allows Optimal Output Filter Design
• 2% Accuracy Internal 2.5-V Reference
• VDD UVLO
• Cycle-by-Cycle Current Limit with Frequency
Fold Back for Initial Start up Under High
Capacitive Loads
• Input UVLO and OVLO with Input Good Signal
• Integrated 110-V, High and Low-Side Switches
APPLICATIONS
• High Density Isolated Standby Bias Supplies
• DC-to-DC Converters
DESCRIPTION
The UCC25230 is a highly integrated PWM converter
operating as an isolated forward flyback. It has high-
side and low-side power switches integrated and the
control circuit with all key converter functions
included. The power stage requires only one- or
multiple winding coupled inductor and output
capacitors for the complete solution. Voltage-mode
feed-forward control with external compensation
allows optimal output filter selection over wide input
voltage range. The UCC25230 has fixed frequency
set internally at 380 kHz. It also includes input voltage
UVLO and OVLO comparators with hysteresis and
input-good, open-collector output signal which can be
used to enable PWM controllers.
UCC25230 is available in a thermally enhanced 8-pin
SON package with PowerPad™ serving as a ground
pin.
Other features include internal soft start and cycle-by-
cycle current protection. Measured efficiency of
isolated converter over input voltage and output
current ranges are shown in Figure 2.
Isolated Buck Converter
100 V
VDD
7
BOOT
2
UV/OV
3
VIN_G
4
VIN
8
PHASE
1
COMP
6
FB
5
GND PAD
9
8V
100 mA
8V
100 mA
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPad, Flybuck are trademarks of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated

UCC25230
UCC25230
SLUSAQ6B – NOVEMBER 2011 – REVISED APRIL 2012
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
TEMPERATURE RANGE, TA = TJ
-40°C to +125°C
ORDERING INFORMATION
PACKAGE
TAPE AND REEL QTY.
SON-8/S-PVSON-N8 (DRM)
250
3000
PART NUMBER
UCC25230DRMT
UCC25230DRMR
ABSOLUTE MAXIMUM RATINGS(1)(2)
over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VIN
Output voltage on PHASE
Voltage
Voltage
Voltage
Voltage
ESD rating
Sink current
DC
Repetitive surge < 200 ms
DC
Repetitive pulse < 100 ns
BOOT with respect to PHASE
VDD
FB, UV/OV, COMP
VIN_G
HBM
CDM
PHASE (peak)
Source current
PHASE (peak)
Operating virtual junction temperature range, TJ
Operating ambient temperature range, TA
Storage temperature, TSTG
Lead temperature (soldering, 10 sec.)
MIN
-0.3
–0.3
-2
-0.3
-0.3
-0.3
-0.3
-40
-40
-65
MAX
100
105
VIN + 0.5
VIN + 1
10
10
VDD
5.5
2
500
220 (internally
limited)
-220 (internally
limited)
150
125
150
300
UNIT
V
kV
V
mA
°C
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to GND. Currents are positive into, negative out of the specified terminal. Consult Packaging Section of the
Databook for thermal limitations and considerations of packages.
2 Submit Documentation Feedback
Product Folder Link(s): UCC25230
Copyright © 2011–2012, Texas Instruments Incorporated


Features UCC25230 www.ti.com SLUSAQ6B – NOVEM BER 2011 – REVISED APRIL 2012 12-V t o 100-V Input, 0.2-A Output Switching C onverter Check for Samples: UCC25230 F EATURES 1 •2 Highly Integrated Conver ter Operating as a Buck, or Isolated Fo rward-Flyback, Flybuck™ • Wide Oper ating Input Voltage Range from 12 V to 100 V, 105-V Surge. • Up to 0.2-A Out put Current • 9-V Always Available VD D Output with up to 2- mA Current Capab ility • Thermally Enhanced 4-mm x 4-m m SON-8/S- PVSON-N8 (DRM) Package • I nternally Set Fixed 380-kHz Switching F requency • Internal 2-ms Duration Sof t Start • Voltage Mode Control with I nput Feed Forward Allows Optimal Output Filter Design • 2% Accuracy Internal 2.5-V Reference • VDD UVLO • Cycle -by-Cycle Current Limit with Frequency Fold Back for Initial Start up Under Hi gh Capacitive Loads • Input UVLO and OVLO with Input Good Signal • Integra ted 110-V, High and Low-Side Switches APPLICATIONS • High Density Isolated Standby Bias Supplies • DC-to-DC Converters DESCRIPTION Th.
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