TM

R E A L W O R L D S I G N A L P R O C E S S I N G

An Analog Product Catalog 2Q 2003

PWM Controllers
2 Ultra-high-speed, 8-pin voltage
mode PWM controller with fast
Power Supply Control
overcurrent protection
Next-generation, current-mode
PWM controllers offer lowest
power and improved efficiency
New synchronous buck driver for today’s low
3 Current mode push-pull PWM output voltage non-isolated converters
controller with programmable UCC27222
slope compensation
Zero voltage transition PWM
Page 4
out performs all others in high-
efficiency, high-power switching

MOSFET Drivers
4 MOSFET driver delivers 2% to 4%
efficiency gain for your synchro-
nous buck converters
Single 9-A high speed low-side
driver reduces space and design
complexity
5 Dual MOSFET gate driver ICs
provide higher current and
enhanced noise immunity

Power Supply Support

5 High-performance load share
controller provides increased
functionality to parallel power
supplies Advanced controllers combine PFC and PWM
Power Factor power stages in one chip UCC2851x family
Correction Page 6
6 Advanced PFC/PWM combination
controllers
Low-to-medium power transition
mode PFC controller for IEC1000-
3-2 compliance applications

DC/DC Controllers
7 Low-input voltage mode
synchronous buck controller
Wide-input voltage synchronous
buck controller

Resources
8 Selection Guides
2 POWER SUPPLY CONTROL SINE ON TEXAS INSTRUMENTS 2Q 2003

PWM Controllers

Ultra-high-speed, 8-pin voltage Next-generation, current-mode PWM

mode PWM controller with fast controllers offer lowest power and
overcurrent protection improved efficiency
UCC35705 and UCC35706 UCC38C4x
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Get samples, datasheets and app reports at: Get samples, datasheets and app reports at:
www.ti.com/sc/device/partnumber www.ti.com/sc/device/partnumber
Replace partnumber in URL with UCC35705 or UCC35706 Replace partnumber in URL with UCC38C40, UCC38C41, UCC38C42,
UCC38C43, UCC38C44 or UCC38C45
• High-speed, 4-MHz oscillator allows for smaller magnet-
ics for high density and lower cost converters • Fastest overcurrent protection: 35-ns delay
• Integrated oscillator with voltage feedforward circuitry • Low, 50-µA start-up current
• 25-ns current limit delay provides fast protection from • Low operating current: 2.3 mA at 50 kHz
overcurrent faults • ±1-A peak output current
• Low start-up current: 30 µA • Rail-to-rail output swings with 25-ns rise and 20-ns fall
• Packaging: 8-pin package for simplicity and reduced size times
(SOIC, MSOP and PDIP) • ±1% initial trimmed 2.5-V error amplifier reference
• Suggested resale price starts at $1.00 each in quantities • Trimmed oscillator discharge current
of 1,000 • Packaging: Available in 8-pin DIP, 8-pin SOIC and 8-lead
MSOP which minimizes space
UCC35705/6 Typical Application • Suggested resale price starts at $0.99 each in quantities
of 1,000
VIN VOUT
UCC38C42 Block Diagram
Voltage
TPS2829
Feed-Forward Voltage OUT
Duty Mode
Cycle Control 5-V Precision Low 50-µA Start-Up and
Mode VREF VDD
Reference 2.3-mA Operating Current
Control
Programmable
DC Clamp Current
Or CS
Limit
Maximum UC3842A-Based
Duty Peak Current-Mode ±1 A OUT
Cycle Architecture
FB
High
Frequency 35-ns
1-MHz
Oscillator UCC35705/6 RT/CT Current
Oscillator CS
Sense Error
Response Amplifier
GND FB

REF
Applications include:
• High frequency, isolated forward and flyback converters COMP

in the 25-W to 200-W range

• Any isolated DC/DC and off-line converters with wide
input voltage range Applications include:
• Board level point-of-load DC/DC modules • Merchant and OEM power supply applications
• Telecom and datacom modular and brick applications
2Q 2003 TEXAS INSTRUMENTS SINE ON POWER SUPPLY CONTROL 3

PWM Controllers

Current mode push-pull with Zero voltage transition PWM out-

programmable slope compensation performs all others in high-efficiency,
high-power switching
UCC38083/4/5/6
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UCC3895
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www.ti.com/sc/device/partnumber
Get samples, datasheets, app reports and EVMs at:
Replace partnumber in URL with UCC38083, UCC38084, UCC38085
www.ti.com/sc/device/UCC3895
or UCC38086
• Programmable output turn-on delay
• Programmable slope compensation
• Adaptive delay set
• Internal soft-start (UCC38083 and UCC38084)
• Bi-directional oscillator synchronization
• Cycle by cycle current limiting
• Voltage mode, current mode, or average current mode
• Low start-up current: 120 µA and 1.5 mA typical run
control
current
• Programmable soft start/soft stop and chip disable
• Single external component oscillator programmable
• Duty cycle control: 0% to 100%
from 50-kHz to 1-Mhz
• Error amplifier: 7 MHz
• Current sense discharge transistor for good noise
• Operation to 1 MHz
immunity
• Low current consumption: 5 mA typ. at 500 kHz
• Flexibility with two UVLO levels – UCC38084 and
• Low start-up current: 150 µA typ.
UCC38086 have minimum operating voltage of 4.1 V,
• Packaging: Available in 20-pin wide-body SOIC, 20-pin
making them perfect for 5-V systems
DIP, 20-pin PLCC or 20-pin TSSOP
• Packaging: Available in 8-pin SOIC, 8-pin DIP, and
• Suggested resale price starts at $4.90 each in quantities
8-pin TSSOP
of 1,000
• Suggested resale price starts at $1.20 each in quantities
of 1,000
UCC3895 Typical Application
UCC38083/4/5/6 Typical Application

VIN Power VOUT

Transformer
VDD

UCC3808x
CTRL OUTA UCC3895

RT OUTB
RF
ISET CS
RT GND
RSET RS
CF

Feedback
Applications include:
• High-power (>400 watts) bus power supplies where
density and efficiency are important
Applications include:
• High efficiency switch mode power supplies
• Telecom DC/DC converters
• Point-of-load or point-of-use power modules
• Low-cost push-pull, half bridge and full-bridge
applications
4 POWER SUPPLY CONTROL SINE ON TEXAS INSTRUMENTS 2Q 2003

MOSFET Drivers

MOSFET driver delivers 2% to 4% Single 9-A high speed low-side driver

efficiency gain for your synchronous reduces space and design complexity
buck converters
UCC37321 and UCC37322
ODUC

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MODULE
www.ti.com/sc/device/partnumber
Get samples, datasheets, app reports and EVMs at: Replace partnumber in URL with UCC37321 or UCC37322
www.ti.com/sc/device/partnumber
Replace partnumber in URL with UCC27221 or UCC27222 • High peak current drive capability of +/- 9 A at the
Miller Plateau region using TrueDrive™ technology
• Predictive Gate Drive™ maximizes efficiency by • Efficient constant current sourcing using a unique
minimizing body diode conduction and reverse bipolar and CMOS output stage
recovery losses • Industry-standard pin-out with high performance with
• Transparent synchronous buck gate driver operation addition of ENABLE function
from the single ended PWM input signal • TTL/CMOS compatible inputs independent of supply
• 12-V or 5-V input operation or 3.3-V input with voltage
availability of higher bias voltage • 15-ns typical rise and 19-ns typical fall times with 10-nF
• ±3 A TrueDrive™ peak gate drive current at MOSFET load
Miller thresholds • Typical propagation delay times of 25 ns with input
• Automatically adjusts for changing operation conditions falling, 35 ns with input rising
• Inverting PWM input option (UCC27221) • Packaging: Available in 8-pin MSOP PowerPAD™, 8-pin
• Extended operating temperature range of –40° C to DIP, and 8-pin SOIC
+105° C • Suggested resale price starts at $0.99 each in quantities
• Packaging: PowerPAD™ TSSOP-14 package for superior of 1,000
thermal dissipation
• Suggested resale price starts at $1.25 each in quantities UCC37321/2 Block Diagram
of 1,000

VDD 1 8 VDD
UCC27222 Typical Application
Inverting
VIN
D1

R1
N/C UCC27222 VHI VDD
Q1
N/C G1 Non-Inv
L1
VDD SW C1 IN 2 7 OUT
CIN VOUT 100 kΩ
VLO SWS
PVLO G2S Q2
C2 AGND G2 ENBL 3 6 OUT
COUT
PWM IN PGND
INPUT
AGND 4 5 PGND
GND GND

Applications include: Applications include:

• Non-isolated, high-frequency, low-output voltage DC • Switch mode power supplies
to DC converters • DC/DC converters
• High-current, point of load converters in distributed • Motor controllers
power systems • Class D switching amplifiers
• CPU power, general computer, telecom, datacomm and • Line drivers
merchant power applications • Pulse transformer drivers
2Q 2003 TEXAS INSTRUMENTS SINE ON POWER SUPPLY CONTROL 5

MOSFET Drivers Power Supply Support

Dual MOSFET gate driver ICs provide High-performance load share controller
higher current and enhanced noise provides increased functionality to
immunity parallel power supplies
UCC37323/4/5 UCC39002
ODUC D ATA
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www.ti.com/sc/device/partnumber www.ti.com/sc/device/UCC39002
Replace partnumber in URL with UCC37323, UCC37324 or UCC37325
• High accuracy, better than 1% current share error at
• ± 4 A TrueDrive™ peak gate drive current at MOSFET full load
Miller Plateau • High side or low side (GND reference) current-sense
• Industry standard 8-pin pin-out capability
• 20-ns rise and 15 ns fall times into 1.8-nF load • Ultra-low offset current sense amplifier using post
• TTL/CMOS compatible inputs package trimming
• Thermally enhanced MSOP PowerPAD™ package • Single wire load share bus
• Unique bipolar and CMOS output stage for efficient • Full scale adjustability
constant current sourcing • Packaging: Available in 8-pin SOIC, 8-pin DIP and
• Propagation delay times of 30 ns 8-pin MSOP
• Packaging: Available in 8-pin MSOP, 8-pin SOIC, 8-pin • Suggested resale price starts at $0.89 each in quantities
DIP of 1,000
• Suggested resale price starts at $0.99 each in quantities
of 1,000 UCC39002 Typical Application

UCC37324 Typical Application

V+
RADJ
+ 12 V S+
UCC37324

LS BUS
UCC39002 Load
Power
A Supply 1 CS- CSO 8
+V with 2 CS+ LS 7

System±
System+
Remote 3 VDD EAO 6
Sense
4 GND ADJ 5
S-

V-

Applications include:
• Parallelable DC/DC modules
• Server, workstation and telecom systems
Applications include: • High reliability systems
• Switch mode power supplies • N+1 redundant power systems
• DC/DC converters • High-current applications where off-the-shelf power
• Motor controllers supplies need to be paralleled
• Class D switching amplifiers
• Line drivers
• Pulse transformer drivers
6 POWER SUPPLY CONTROL SINE ON TEXAS INSTRUMENTS 2Q 2003

Power Factor Correction

Advanced PFC/PWM combination Low-to-medium power transition

controllers mode PFC controller for IEC1000-3-2
compliance applications
UCC2851x Family
UCC38050
ODUC D ATA APP
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Replace partnumber in URL with UCC28510, UCC28511, UCC28512, Get samples, datasheets, and app reports at:
UCC28513, UCC28514, UCC28515, UCC28516 or UCC28517 www.ti.com/sc/device/UCC38050

• Boundry conduction mode controller for low cost PFC

• Combines PFC and PWM power stages in one chip
• Slew rate comparator improves transient response time
• Trailing edge/leading edge modulation minimizes ripple
• Zero power detect prevents OVP during light load
current in boost capacitor
• 3-A sink/2-A source gate drives provide efficient
conditions
• ± 750-mA peak gate drive current improves MOSFET
MOSFET switching
• Multiple UVLO options optimize start-up and turn-off
switching efficiency
• Overvoltage protection, open-feedback protection and
behaviors for differing biasing schemes and load
transient requirements enable circuits minimize external components and
PFC features include lower implementation costs
• Transconductance amplifier, which enhances transient • Packaging: Available in 8-pin SOIC and 8-pin DIP
response • Suggested resale price starts at $0.65 each in quantities
• Improved power factor and THD through improved of 1,000
multiplier
PWM features include UCC38050 Typical Application
• Programmable max duty cycle up to 90% protects
downstream power stage
• 1x:2x PFC:PWM frequency options allow smaller PWM
components while minimizing losses in PFC UCC38050
1 VO_SNS VCC 8

• Packaging: Available in 20-pin SOIC and 20-pin DIP 2 COMP

• Suggested resale price starts at $1.69 each in quantities DRV 7

3 MULTIN
GND 6
of 1,000
4 CS ZCD 5
UCC2851x Typical Application

VOUT

Rectified Applications include:

AC Line
• Switch-mode power supplies for desktops, monitors,
and set top boxes
UCC2851x
GT2 VCC
• AC adapter front-end power supplies
VSENSE ISENSE2 • Electronic ballasts
GT1 CT_BUFF

ISENSE1 VERR Isolated

Feedback
PKLMT VREF

IAC D_MAX

Z VFF VAOUT Z

MOUT RT
Z
CAOUT SS2

PGND GND

Applications include:
• Desktop and server computer power converters
• Distribution power system front ends
2Q 2003 TEXAS INSTRUMENTS SINE ON POWER SUPPLY CONTROL 7

DC/DC Controllers

Low-input (2.25 V to 5.5 V) highly Wide-input voltage (8 V to 40 V)

efficient voltage mode synchronous synchronous buck controller
buck controller TPS40
K™
SOFTW/SWIFT™
AR
TOOL E
TPS40050/51/53
TPS40000/1/2/3 R
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www.ti.com/sc/device/partnumber
Get samples, datasheets, EVMs, app reports and software tools at: Replace partnumber in URL with TPS40050, TPS40051 or TPS40053
www.ti.com/sc/device/partnumber
Replace partnumber in URL with TPS40000, TPS40001, TPS40002
• Operating input voltage: 8 V to 40 V
or TPS40003
• Input voltage feedforward compensation
• Operating input voltage: 2.25 V to 5.5 V • 1% internal 0.7-V reference
• Output voltage as low as 0.7 V • Programmable fixed frequency 100-K to 1-MHz voltage
• 1% internal 0.7-V reference mode controller
• Predictive Gate Drive™ technology N-channel MOSFET • Internal gate drive outputs for high side and
drivers for higher efficiency synchronous N-channel MOSFETs
• Externally adjustable soft-start and overcurrent limit • Thermal shutdown
• Fixed-frequency, 300-kHz or 600-kHz, voltage-mode • Externally synchronizable
control • Programmable high-side current limit
• Source-only current or source/sink current • Programmable closed-loop soft start
• Package: 10-lead MSOP PowerPAD™ for higher • Internal diode for the high-side gate drive boost
performance voltage
• Suggested resale price starts at $0.99 each in quantities • Package: 16-pin TSSOP PowerPAD™
of 1,000 • Suggested resale price starts at $1.32 each in quantities
of 1,000
Product Description
TPS40000 300 kHz, source only Product Description
TPS40001 300 kHz, source/sink TPS40050 Source only
TPS40002 600 kHz, source only TPS40051 Source/sink
TPS40003 600 kHz, source/sink TPS40053 Source/sink with VOUT prebias

TPS4000x Typical Application TPS40050 Typical Application

VDD +

VIN
-
TPS40050PWP
1 ILIM BOOT 10
1 KFF ILIM 16
VOUT
2 FB HDRV 9
2 RT VIN 15
3 COMP SW 8 3 BP5 BOOST 14

4 SS/SD VDD 7 4 SYNC HDRV 13

5 GND LDRV 6 5 SGND SW 12 +

6 SS BP10 11
VOUT
7 VFB LDRV 10
-
8 COMP PGND 9

Applications include:
• Networking equipment Applications include:
• Telecom equipment • Networking equipment
• Base stations • Telecom equipment
• Servers • Base stations
• DSP power • Servers
8 POWER SUPPLY CONTROL SINE ON TEXAS INSTRUMENTS 2Q 2003
Selection Guides

MOSFET Drivers
IO Rise/Fall VCC Prop Dead
No. of Output Output Source/Sink Time Range Delay Input Time Protection Internal
Device Outputs Configuration Architecture (A) (ns) (V) (ns) Thresholds Enable Control Features1 Regulator Price2
TPS2811 2 Inverting TrueDrive™ 2.0/2.0 25/25 8 to 40 40 CMOS No Yes — Yes 0.83
TPS2812 2 Non-inverting TrueDrive 2.0/2.0 25/25 8 to 40 40 CMOS No Yes — Yes 0.83
TPS2813 2 One inverting, TrueDrive 2.0/2.0 25/25 4 to 14 40 CMOS No Yes — No 0.83
one non-inverting
TPS2814 2 Dual 2-input AND; TrueDrive 2.0/2.0 25/25 4 to 14 40 CMOS No Yes — No 0.83
one inverting
TPS2815 2 2-input NAND TrueDrive 2.0/2.0 25/25 4 to 14 40 CMOS No Yes — No 0.83
TPS2816 1 Inverting TrueDrive 2.0/2.0 25/25 8 to 40 40 CMOS No Yes — Yes 0.58
TPS2817 1 Non-inverting TrueDrive 2.0/2.0 25/25 8 to 40 40 CMOS No Yes — Yes 0.58
TPS2818 1 Inverting TrueDrive 2.0/2.0 25/25 8 to 40 40 CMOS No Yes — Yes 0.58
TPS2819 1 Non-inverting TrueDrive 2.0/2.0 25/25 8 to 40 40 CMOS No Yes — Yes 0.58
TPS2828 1 Inverting TrueDrive 2.0/2.0 25/25 4 to 14 40 CMOS No Yes — No 0.58
TPS2829 1 Non-inverting TrueDrive 2.0/2.0 25/25 4 to 14 40 CMOS No Yes — No 0.58
TPS2830 2 Non-inverting TrueDrive 2.4/2.4 50/50 4.5 to 15 75 CMOS Yes Yes OVP No 1.23
TPS2831 2 Inverting TrueDrive 2.4/2.4 50/50 4.5 to 15 75 CMOS Yes Yes OVPC No 1.23
TPS2832 2 Non-inverting TrueDrive 2.4/2.4 50/50 4.5 to 15 75 CMOS No Yes — No 1.17
TPS2833 2 Inverting TrueDrive 2.4/2.4 50/50 4.5 to 15 75 CMOS No Yes — No 1.17
TPS2834 2 Non-inverting TrueDrive 2.4/2.4 30/30 4.5 to 15 70 TTL Yes Yes OVP No 1.23
TPS2835 2 Inverting TrueDrive 2.4/2.4 30/30 4.5 to 15 70 TTL Yes Yes OVP No 1.23
TPS2836 2 Non-inverting TrueDrive 2.4/2.4 30/30 4.5 to 15 70 TTL No Yes — No 1.17
TPS2837 2 Inverting TrueDrive 2.4/2.4 30/30 4.5 to 15 70 TTL No Yes — No 1.17
UC3705 1 Non-inverting Bipolar 1.5/1.5 40/40 5 to 40 100 TTL No No TSD No 2.17
UC3706 2 Configurable Bipolar 1.5/1.5 40/40 5 to 40 100 TTL No No TSD, OCP No 2.17
UC3707 2 Non-inverting Bipolar 1.5/1.5 40/40 5 to 40 100 TTL No No TSD No 2.40
UC3708 2 Non-inverting Bipolar 3.0/3.0 25/25 5 to 35 25 TTL/CMOS Yes No UVLO, TSD No 2.94
UC3709 2 Inverting Bipolar 1.5/1.5 40/40 5 to 40 25 TTL No No TSD No 2.75
UC3710 1 One inverting, Bipolar 6/6 25/25 4.7 to 18 35 CMOS No No TSD No 3.04
one non-inverting
UC3714 1 Non-inverting Bipolar 0.5/1.0 30/25 7 to 20 50 TTL/PWM Yes Yes — No 0.85
UC3715 1 One inverting, Bipolar 1.0/2.0 30/25 7 to 20 50 TTL/PWM Yes Yes — No 0.85
one non-inverting
UCC27221 2 Inverting TrueDrive 3.3/3.3 81/103 3.7 to 20 60 TTL — PGD3 — Yes 1.25
UCC27222 2 Non-inverting TrueDrive 3.3/3.3 81/103 3.7 to 20 60 TTL — PGD3 — Yes 1.25
UCC37321 1 Inverting TrueDrive 9/9 20/20 4 to 15 30 TTL/CMOS Yes No — No 0.99
UCC37322 1 Non-inverting TrueDrive 9/9 20/20 4 to 15 30 TTL/CMOS Yes No — No 0.99
UCC37323 2 Inverting TrueDrive 4.0/4.0 25/25 4 to 15 35 TTL/CMOS No No — No 0.99
UCC37324 2 Non-inverting TrueDrive 4.0/4.0 25/25 4 to 15 35 TTL/CMOS No No — No 0.99
UCC37325 2 One inverting, TrueDrive 4.0/4.0 25/25 4 to 15 35 TTL/CMOS No No — No 0.99
one non-inverting
1TSD—Thermal Shutdown; OVP—Over-Voltage Protection; UVLO—Under-Voltage Lockout.; OCP—Over-Current Protection; OVPC—Over-Voltage Protection Current
2Suggested resale price in U.S. dollars in quantities of 1,000 New devices indicated in red

Power Factor Correction Controllers (PFC)

PWM
Typical Max Start-up Programmable PWM
Control Power Soft Frequency Current UVLO Max Duty Frequency
Device Description Method Level Switching (kHz) (mA) Thresholds (V) Cycle Option OVP Price1
UC3852 Transition Mode CRM 2
<150 W — Variable 1 16.3/11.5 — — No 1.61
PFC Controller
UC3853 8-Pin PFC Controller ACM3 75 W to 300 W — 125 0.25 11.5/9.5 — — Yes 0.99
UC3854 PFC Controller ACM3 200 W to 2 kW+ — 200 1.5 16/10 — — No 0.99
UC3854A/B Improved PFC Controller ACM3 200 W to 2 kW+ — 200 0.3 16/10 (’54A) — — No 1.25
10.5/10 (‘54B)
UC3855A/B High Performance Soft ACM3 400 W to 2 kW+ ZVT4 500 0.15 16/10 (’55A) — — Yes 5.25
Switching PFC Controller 10.5/10 (’55B)
UCC38050 Transition Mode CRM2 50 W to 400 W Variable 0.75 16/10 — — Yes 0.65
PFC Controller
UCC3817/18 BiCMOS PFC Controller ACM3 75 W to 2 kW+ — 400 0.1 16/10 (3817) — — Yes 1.07
10.5/10 (3818)
UCC3819 Tracking Boost ACM3 75 W to 2 kW+ — 400 0.1 10.2/9.7 — — Yes 1.07
PFC Controller
UCC38500/01/02/03 PFC+PWM Combo ACM3 75 W to 1 kW+ — 400 0.1 16/10 (’500, ’502) No 1x Yes 1.45
Controller 10.5/10 (’501, ‘503)
UCC28510/11/12/13 Advanced PFC+PWM ACM3 75 W to 1 kW+ — 600 0.1 16.6/9.3 (‘510, ‘512) Yes; 1x Yes 1.69
Combo Controller 10.2/9.7 (‘511, ‘513) Up to 90%
UCC28514/15/16/17 Advanced PFC+PWM ACM3 75 W to 1 kW+ — 600 0.1 16.6/9.3 (‘514, ‘516) Yes; 2x Yes 1.69
Combo Controller 10.2/9.7 (‘515, ‘517) Up to 90%
1 Suggested resale price in U.S. dollars in quantities of 1,000 2 Critical conduction Mode 3 Average Current Mode 4 Zero Voltage Transition
 2Q 2003
PWM Power Supply Controllers (single output topologies)
Typical Max Output Internal
Power Max Supply UVLO: UVLO: Vref Duty Voltage Drive Leading
Level Practical Start-Up Operating Voltage On Off Vref Tol. Cycle Soft Feed- (Sink/Source) Edge Available

TEXAS INSTRUMENTS
Device (W) Frequency Current Current (V) (V) (V) (V) (%) (%) Start E/A Shutdown forward (A) Blanking Packages Price1
Voltage Mode Controllers
UCC35701 25 to 250 700 kHz 130 µA 750 µA 9.0 to 15 13.0 0.9 5 1.5 Prog. Yes No Yes Yes 1.2/1.2 No TSSOP14, SOIC14, 1.92
VS Clamp PDIP14
UCC35702 25 to 250 700 kHz 130 µA 750 µA 8.8 to 15 9.6 8.8 5 1.5 Prog. Yes No Yes Yes 1.2/1.2 No TSSOP14, SOIC14, 1.93
VS Clamp PDIP14
UCC35705 25 to 250 4 MHz 50 µA 2.5 mA 8.2 to 15 8.8 8.2 — — 93 No No No No 0.1/0.1 No SOIC8, PDIP8, 0.99
MSOP8
UCC35706 25 to 250 4 MHz 50 µA 2.5 mA 8.0 to 15 12 8 — — 93 No No No No 0.1/0.1 No SOIC8, PDIP8, 0.99
MSOP8
UCC3581 5 to 75 100 kHz 85 µA 300 µA 6.8 to 15 7.3 6.8 4 1.5 Prog. Yes No Yes No 1/1 No SOIC14, PDIP14 1.61
UCC3960 25 to 250 400 kHz 150 µA 2.3 mA 8.0 to 19 10 8 — — 72 Yes No No No 0.1/0.1 No SOIC8, PDIP8 1.19
UCC3961 25 to 250 400 kHz 150 µA 2.3 mA 8.0 to 19 10 8 — — 72 Yes No No No 0.1/0.1 No SOIC14, PDIP14 1.29
Peak Current Mode Controllers
UCC3800 7.2 to 15 (00) 7.2 (00) 6.9 (00)
thru 9.4 to 15 (01) 9.4 (01) 7.4 (01) 100 (00, 02, 03) SOIC8,PDIP8

Selection Guides
UCC3805 10 to 200 1 MHz 100 µA 500 µA 12.5 to 15 (02,04) 12.5 (02, 04) 8.3 (02, 04) 5 1.5 50 (01, 04, 05) Yes Yes No No 1/1 100 ns TSSOP8 1.22
4.1 to 15 (03, 05) 4.1 (03, 05) 3.6 (03, 05)
UCC3807-1 6.9 to 15 (-1) 7.2 (-1) 6.9 (-1) SOIC8,PDIP8
thru -3 10 to 200 1 MHz 100 µA 1.3 mA 8.3 to 15 (-2) 12.5 (-2) 8.3 (-2) 2 V (Int) — Prog. Yes Yes No No 1/1 100 ns MSOP8,TSSOP8 1.76
4.1 to 15 (-3) 4.3 (-3) 4.1 (-3)
UCC3809-1 10 to 200 1 MHz 50 µA 500 µA 8 to 19 10 (-1) 8.0 5 5.0 Yes Yes No Yes Yes 0.8/0.4 No SOIC8 0.79
and -2 15 (-2)
7.2 to 15 (-1) 7.2 (00) 6.9 (00)
UCC3813-0 9.4 to 15 (-1) 9.4 (01) 7.4 (01) 100 (-0, -2, -3) TSSOP8, SOIC8,
thru -5 10 to 200 1 MHz 100 µA 500 µA 12.5 to 15 (-2, -4) 12.5 (02, 04) 8.3 (02, 04) 5 2.0 50 (-1, -4, -5) Yes Yes No No 1/1 100 ns PDIP8 0.74
4.1 to 15 (-3, -5) 4.1 (03, 05) 3.6 (03, 05)
UC3842 10 to 30 (42, 44) 16 (42, 43) 10 (42, 44) 100 (42, 43) SOIC8,
thru 30 to 350 500 kHz 0.5 mA 11 mA 7.6 to 30 (43, 45) 8.4 (43, 45) 7.6 (43, 45) 5 1.5 50 (44, 45) No Yes No Yes 1/1 No SOIC14, PDIP8 0.73

SINE ON POWER SUPPLY CONTROL

UC3845
UC3842A 10 to 30 (42A, 44A) 16 (42A, 43A) 10 (42A, 44A) 5 1.5 100 (42, 43) No Yes No Yes 1/1 No SOIC8,
thru 30 to 350 500 kHz 0.3 mA 11 mA 7.9 to 30 (43A, 45A) 8.4 (43A, 45A) 7.6 (43A, 45A) 50 (44, 45) SOIC14, PDIP8 0.72
UC3845A
UCC38C40 6.6 to 20 (40, 41) 7.0 (40, 41) 6.6 (40, 41) 100 (40, 42, 43) SOIC8, PDIP8,
thru 10 to 250 1 MHz 50 µA 2.3 mA 9 to 20 (42, 44) 14.5 (42, 44) 9.0 (42, 44) 5 2 50 (41, 44, 45) No Yes No Yes 1/1 No MSOP8 0.89
UCC38C45 7.6 to 20 (43, 45) 8.4 (43, 45) 7.6 (43, 45)
UC3849 50 to 250 1 MHz — 21 8.4 to 20 8.4 8 5 2.0 Prog Yes Yes No No 1/1 Yes DIL24, SOIC24,
PLCC28 2.90
UCC3884 50 to 250 1 MHz 200 µA 5 8.9 to 15 8.9 8.3 5 2.5 Yes Yes Yes No Yes 0.5/1 Yes DIL16, SOIC16,
PLCC20 1.52
1Suggested resale price in U.S. dollars in quantities of 1,000 New devices indicated in red

9
 10
PWM Power Supply Controllers (multiple output topologies)
Output

POWER SUPPLY CONTROL SINE ON

Typical Max Operating Supply UVLO: Vref Max Voltage Drive
Power Practical Start-Up Current Voltage On/Off Vref Tol. Duty Soft Shutdown Feed- (Sink/Source) Sync. Available
Device Level Frequency Current (mA) (V) (V) (V) (%) Cycle Start E/A Pin forward (A) Pin Packages Price1
Current Mode Controllers
UC3823 50 to 750 W 1 MHz 1.1 mA 22 9 to 30 9.2/8.4 5.1 1.0 Prog. Yes Yes No No 1.5/1.5 Yes DIL16, SOIC16, PLCC20 1.50
UC3823A/B 50 to 750 W 1 MHz 100 µA 28 9 to 22 16/10 5.1 1.5 Prog. Yes Yes No No 2/2 Yes DIL16, SOIC16, PLCC20 4.65
9.2/8.4
UC3825 50 to 750 W 1 MHz 1.1 mA 22 9 to 30 9.2/8.4 5.1 1.0 Prog. Yes Yes No No 1.5/1.5 Yes DIL16, SOIC16, PLCC20 1.50
UC3825A/B 50 to 750 W 1 MHz 100 µA 28 9 to 22 16/10 5.1 1.5 Prog. Yes Yes No No 2A/2 Yes DIL16, SOIC16, PLCC20 2.50
9.2/8.4
UC3846 50 to 750 W 500 kHz 1.5 mA 17 8 to 40 7.7/7 5 2.0 Prog. Yes Yes No No 0.5/0.5 Yes DIL16, SOIC16, PLCC20 1.50
UCC3806 50 to 750 W 350 kHz 100 µA 1.4 7 to 15 7.5/6.7 5.1 3.0 Prog. Yes Yes Yes No 0.5/0.5 Yes DIL16, SOIC16, PLCC20 3.88
UCC3808/A 50 to 500 W 1 MHz 130 µA 1 4.3 to 15 12.5/8.3 — — Prog. Yes Yes Yes No 0.5/0.5 No DIL8, SOIC8, TSSOP8 1.20
4.3/4.1
UCC38083-6 50 to 500 W 1 MHz 130 µA 20 8.3 to 15 12.5/8.3 5 2 50% Yes No No No 1.0/0.5 No SOIC8, DIL8, TSSOP8 1.20
UCC3810 50 to 500 W 1 MHz 150 µA 2 8.3 to 11 11.3/8.3 5 2 50% No Yes Yes Yes 1/1 Yes DIL16, SOIC16 1.72
Voltage Mode Controllers
SG2524/3524 — 722 kHz — — 8 to 40 — 5 4 45% No Yes Yes No 0.1/0.1 Yes SOIC16, DIP16, SOP16 0.63

Selection Guide
TL494 — 300 kHz — 7.5 7 to 40 — 5 5 45% No Yes No No 0.2/0.2 Yes SOIC16, TSSOP16, 0.26
DIP16, SOP16
TL594 — 300 kHz — 12.4 7 to 40 6.1/6 5 1 45% No Yes No No 0.2/0.2 Yes SOIC16, TSSOP16, 0.27
DIP16, SOP16
TL598 — 300 kHz — 15 7 to 40 6.1/6 5 1 45% No Yes No No 0.2/0.2 Yes SOIC16, DIP16 0.72
UC3524A 50 to 500 W 250 kHz 4 mA 5 8 to 40 7.5/7 5 2.0 Prog. Yes Yes Yes No 0.2/0.2 Yes DIL16, SOIC16, PLCC20 1.61
UC3525A/B 50 to 500 W 250 kHz — 14 8 to 40 7/7 5 2.0 Prog. Yes Yes Yes No 0.2/0.2 Yes DIL16, SOIC16, PLCC20 0.99
UC3526A 50 to 500 W 250 kHz — 14 8 to 35 — 5.1 1.3 Prog. Yes Yes Yes No 0.2/0.2 Yes DIL18, SOIC18, PLCC20 2.87
UC3823 50 to 750 W 1 MHz 1.1 mA 22 9 to 30 9.2/8.4 5.1 1.0 Prog. Yes Yes No No 1.5/1.5 Yes DIL16, SOIC16, PLCC20 1.50
UC3823A/B 50 to 750 W 1 MHz 100 µA 28 9 to 22 16/10 5.1 1.5 Prog. Yes Yes No No 2/2 Yes DIL16, SOIC16, PLCC20 4.65
UC3824 50 to 250 W 1 MHz 1.1 mA 22 9 to 30 9.2/8.4 5.1 1.0 Prog. Yes Yes No No 1.5/1.5 Yes DIL16, SOIC16, PLCC20 4.26
UC3825 50 to 750 W 1 MHz 1.1 mA 22 9 to 30 9.2/8.4 5.1 1.0 Prog. Yes Yes No No 1.5/1.5 Yes DIL16, SOIC16, PLCC20 1.50
UC3825A/B 50 to 750 W 1 MHz 100 µA 28 9 to 22 16/10 5.1 1.5 Prog. Yes Yes No No 2/2 Yes DIL16, SOIC16, PLCC20 2.50
9.2/8.4
Soft Switching Controllers
UC3875-8 200 W to 2 kW 1+ MHz 150 µA 45 10.7 to 20 10.7/9.3 5 2.0 Prog. Yes Yes No No Four @ 2/2 Yes DIL20, SOIC20, PLCC28 4.60

TEXAS INSTRUMENTS
15/9
UC3879 200 W to 2 kW 500 kHz 150 µA 27 11 to 20 15.2/9 5 2.5 Prog. Yes Yes No No Four @ 0.1/0.1 Yes DIL20, SOIC20, PLCC28 3.50
10.7/ 9
UCC3580-1/-2 50 to 500 W 500 kHz 100 µA 1.5 7 to 15 15/8.5 5 1.0 Prog. Yes Yes Yes Yes 0.5/1, 0.3/0.3 No DIL16, SOIC16, PLCC20 2.25
9/8.5
UCC3895 200 W to 2 kW 1 MHz 150 µA 5 11 to 17 11/9 5 3.0 Yes Yes Yes Yes No Four @ 0.1/0.1 Yes DIL20, SOIC20, PLCC20 4.09
1Suggested resale price in U.S. dollars in quantities of 1,000 New devices indicated in red

2Q 2003
2Q 2003 TEXAS INSTRUMENTS SINE ON POWER SUPPLY CONTROL 11

Evaluation Modules
E VA L UAT ION
To order any of the following evaluation modules (EVMs), TI WORLDWIDE TECHNICAL SUPPORT
please call the order desk, 1-800-477-8924, ext. 5800, in Internet
MODULE

North America. To order from other regions, please contact TI Semiconductor Product Information Center Home Page
the TI Product Information Center (see listings on page 15) or support.ti.com
local TI distributor. TI Semiconductor KnowledgeBase Home Page
TPS2817 Power Supply Evaluation Module with TPS2817
support.ti.com/sc/knowledgebase
MOSFET Driver $50
UCC27222EVM 12-V to 1.8 V, 20-A High Efficiency Synchronous Product Information Centers
Buck Converter Using the UCC27222 $49 Americas
UCC27222EVM-001 Synchronous Buck Converter Providing a Variable Output Phone +1(972) 644-5580
(available 3Q ‘03) Between 0.9 V and 1.8 V at 20 A from a 0.5 V Input $49 Fax +1(972) 927-6377
UCC38500EVM UCC38500 Evaluation Module: 100W, Universal Internet/Email support.ti.com/sc/pic/americas.htm
Line to 12V Regulated Output $49 Europe, Middle East, and Africa
UCC3817EVM UCC3817EVM Evaluation Module: 385 V, 250 W Phone
PFC Boost Converter $49 Belgium (English) +32 (0) 27 45 55 32
UCC3895EVM-001 Configuring The UCC3895 For Direct Control Driven Finland (English) +358 (0) 9 25173948
Synchronous Re (Rev. A) $99 France +33 (0) 1 30 70 11 64
UCC3809EVM 10-Watt Flyback Converter Utilizing the UCC3809 $49 Germany +49 (0) 8161 80 33 11
UCC3889EVM Off-Line Low-Voltage Power Supply Evaluation Module $49 Israel (English) 1800 949 0107
Italy 800 79 11 37
Application Reports Netherlands (English) +31 (0) 546 87 95 45
Spain +34 902 35 40 28
APP
REPORT To access any of the following application reports, type Sweden (English) +46 (0) 8587 555 22
the URL www-s.ti.com/sc/techlit/litnumber and replace United Kingdom +44 (0) 1604 66 33 99
litnumber with the number in red.
Fax +(49) (0) 8161 80 2045
UCC27221/2 Predictive Gate DriveTM Boosts Synchronous Email epic@ti.com
DC/DC Power Converter Efficiency SLUA281 Internet support.ti.com/sc/pic/euro.htm
UCC27221/2 UCC27221/2 Predictive Gate DriveTM Frequently Japan
Asked Questions SLUA280 Fax International +81-3-3344-5317
UCC27221/2 Predictive Gate DriveTM Frequently Domestic 0120-81-0036
Asked Questions SLUA285 Internet/Email International support.ti.com/sc/pic/japan.htm
UCC38050 MathCAD application design tool for use with Domestic www.tij.co.jp/pic
the UCC38050 (Note: this is a compressed .zip file) SLVC018
Asia
UCC38050 UCC38050 100-W Critical Conduction Power Factor Phone
Corrected (PFC) Preregulator SLUU138
International +886-2-23786800
UCC28517 Prototype Reference Design Module SLUU117
Domestic Toll-Free Number
UCC3819 UCC3819 250-W Power Factor Corrected (PFC) Australia 1-800-999-084
Boost Follower PreRegulator Design SLUA269
China 108-00-886-0015
UCC3817 Synchronizing a PFC Controller from a Downstream
Hong Kong 800-96-5941
Converter’s Gate Drive SLUA245
Indonesia 001-803-8861-1006
UCC3809 Comparing the UC3842, UCC3802, and UCC3809
Primary Side PWM Controllers SLUA213
Korea 080-551-2804
Malaysia 1-800-80-3973
UCC3802 Design Considerations for Transitioning from the
UC3842 to the New UCC3802 Family SLUA084
New Zealand 0800-446-934
Philippines 1-800-765-7404
UCC3806 UC3846, UC3856 and UCC3806 Push Pull PWM
Current Mode Control ICs SLUA178 Singapore 800-886-1028
UCC3806 Programming the UCC3806 Features SLUA183
Taiwan 0800-006800
Thailand 001-800-886-0010
UCC3809 Programming the UCC3809 for 90% Maximum
Duty Cycle Clamp SLUA251 Fax 886-2-2378-6808
UCC3843A A Revolutionary Power Management Solution
Email tiasia@ti.com
for Highly Efficient, Multiple Output Applications SLUA255 Internet support.ti.com/sc/pic/asia.htm C010203
UCC38C42 The UCC38C42 Family of High-Speed, BiCMOS
Important Notice: The products and services of Texas Instruments Incorporated and its subsidiaries described
Current Mode PWM Controllers SLUA257 herein are sold subject to TI’s standard terms and conditions of sale. Customers are advised to obtain the most
UCC38C44 UCC38C44 12-V Isolated Bias Supply SLUA274 current and complete information about TI products and services before placing orders. TI assumes no liability for
applications assistance, customer’s applications or product designs, software performance, or infringement of
UCC3895 UCC3895 OUTC/OUTD Asymmetric Duty patents. The publication of information regarding any other company’s products or services does not constitute TI’s
Cycle Operation SLUA275 approval, warranty or endorsement thereof.

UCC38C42 UCC38C42 25-Watt Self-Resonant Reset Forward Real World Signal Processing, the black/red banner, Sine On, Predictive Gate Drive, TrueDrive
Converter SLUA276 PowerPAD, TPS40K and SWIFT are trademarks of Texas Instruments. Other trademarks are
UCC27221 Low Voltage Feedback in PWM Applications SLUA286 property of their respective owners.
UCC3895 Control Driven Synchronous Rectifiers in Phase © 2003 Texas Instruments Incorporated
Shifted Full Bridge Converters SLUA287 Printed in U.S.A. at _____________________________
UCC35705 48-V to 3.3-V RCD Forward with UCC35705 Printed on recycled paper
Voltage-Mode Control and Self-Driven
Synchronous Rectification SLUU141
 TM

R E A L W O R L D S I G N A L P R O C E S S I N G

TI’s MOSFET NEW!

Learn MORE about TI’s
Gate Drivers brochure Distributed Power Solutions
The NEW MOSFET Gate For more in-depth
Drivers brochure information on TI's
from Texas Instruments
contains the latest
Distributed Power
information on: Solutions, including:
• Pin-Compatible Cross • DC/DC Controllers
References to Industry
Standard Drivers • SWIFT™ DC/DC

• MOSFET Driver Converters

selection guide tables
• Plug-In Power
• A summary of the Modules
popular "Predictive
Gate Drive™ • Low Dropout
Technology"
Regulators
And a complete MOSFET Drive Resource Listing
To download a copy of the latest
To download this brochure, go to: Distributed Power Solutions Sine On go to:
power.ti.com/mosfetgatedrivers power.ti.com/distributedpowersineon
Printed copies are available by calling: Printed copies are available by calling:
1-800-477-8924, ext. 9822 1-800-477-8924, ext. 9248

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AN ANALOG
PRODUCT CATALOG

this issue:

Power Supply Control

2Q 2003 SLUM002D