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LTC1922EG-1#PBF

Description
IC REG CTRLR FULL-BRIDGE 20SSOP
CategoryPower/power management    The power supply circuit   
File Size301KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric Compare View All

LTC1922EG-1#PBF Overview

IC REG CTRLR FULL-BRIDGE 20SSOP

LTC1922EG-1#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP, SSOP20,.3
Contacts20
Manufacturer packaging codeG
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
Other featuresALSO CONFIGURABLE IN CURRENT MODE
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPHASE-SHIFT CONTROL
Maximum input voltage9.5 V
Minimum input voltage6.5 V
Nominal input voltage9.5 V
JESD-30 codeR-PDSO-G20
JESD-609 codee3
length7.2 mm
Humidity sensitivity level1
Number of functions1
Number of terminals20
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.05 A
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP20,.3
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height2 mm
surface mountYES
Switch configurationPHASE-SHIFT
Maximum switching frequency1000 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width5.3 mm
Base Number Matches1
FEATURES
s
s
LTC1922-1
Synchronous Phase
Modulated Full-Bridge Controller
DESCRIPTIO
The LTC
®
1922-1 phase shift PWM controller provides all
of the control and protection functions necessary to imple-
ment a high performance, zero voltage switched, phase
shift, full-bridge power converter with synchronous recti-
fication. The part is ideal for developing isolated, low
voltage, high current outputs from a high voltage input
source. The LTC1922-1 combines the benefits of the full-
bridge topology with fixed frequency, zero voltage switch-
ing operation (ZVS). Adaptive ZVS circuity controls the
turn-on signals for each MOSFET independent of internal
and external component tolerances for optimal perfor-
mance.
The LTC1922-1 also provides secondary side synchro-
nous rectifier control. The device uses peak current mode
control with programmable slope comp and leading edge
blanking.
The LTC1922-1 features extremely low operating and
start-up currents to simplify off-line start-up and bias
circuitry. The LTC1922-1 also includes a full range of
protection features and is available in 20-pin through hole
(N) and surface mount (G) packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
DirectSense is a trademark of Linear Technology Corporation.
s
s
s
s
s
s
s
s
s
s
Adaptive DirectSense
TM
Zero Voltage Switching
Integrated Synchronous Rectification Control for
Highest Efficiency
Output Power Levels from 50W to Kilowatts
Very Low Start-Up and Quiescent Currents
Compatible with Voltage Mode and Current Mode
Topologies
Programmable Slope Compensation
Undervoltage Lockout Circuitry with 4.2V Hysteresis
and Integrated 10.3V Shunt Regulator
Fixed Frequency Operation to 1MHz
50mA Outputs for Bridge Drive and Secondary Side
Synchronous Rectifiers
Soft-Start, Cycle-by-Cycle Current Limiting and
Hiccup Mode Short-Circuit Protection
5V, 15mA Low Dropout Regulator
20-Pin PDIP and SSOP Packages
APPLICATIO S
s
s
s
s
Telecommunications, Infrastructure Power Systems
Distributed Power Architectures
Server Power Supplies
High Density Power Modules
TYPICAL APPLICATIO
BIAS
SUPPLY
V
IN
48V
V
OUT
3.3V
EFFICIENCY (%)
LTC1922-1
ISOLATED
FEEDBACK
1922 TA01a
U
U
U
Efficiency
100
90
V
IN
= 48V
V
IN
= 36V
80
70
60
0
10
20
LOAD CURRENT (A)
30
40
1922 • TA01b
1

LTC1922EG-1#PBF Related Products

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Description IC REG CTRLR FULL-BRIDGE 20SSOP IC reg ctrlr iso pwm 20-ssop IC reg ctrlr iso pwm 20-ssop IC REG CTRLR FULL-BRIDGE 20SSOP IC REG CTRLR FULL-BRIDGE 20SSOP IC REG CTRLR FULL-BRIDGE 20DIP IC REG CTRLR FULL-BRIDGE 20DIP IC REG CTRLR FULL-BRIDGE 20SSOP
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? conform to incompatible incompatible conform to conform to conform to conform to conform to
Parts packaging code SSOP SSOP SSOP SSOP SSOP DIP DIP SSOP
package instruction SSOP, SSOP20,.3 SSOP, SSOP, SSOP, SSOP, SSOP20,.3 DIP, DIP20,.3 DIP, DIP20,.3 SSOP,
Contacts 20 20 20 20 20 20 20 20
Manufacturer packaging code G G G G G N N G
Reach Compliance Code compliant not_compliant compli compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Other features ALSO CONFIGURABLE IN CURRENT MODE ALSO CONFIGURABLE IN CURRENT MODE ALSO CONFIGURABLE IN CURRENT MODE ALSO CONFIGURABLE IN CURRENT MODE ALSO CONFIGURABLE IN CURRENT MODE ALSO CONFIGURABLE IN CURRENT MODE ALSO CONFIGURABLE IN CURRENT MODE ALSO CONFIGURABLE IN CURRENT MODE
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE VOLTAGE-MODE
Control Technology PHASE-SHIFT CONTROL PHASE-SHIFT CONTROL PHASE-SHIFT CONTROL PHASE-SHIFT CONTROL PHASE-SHIFT CONTROL PHASE-SHIFT CONTROL PHASE-SHIFT CONTROL PHASE-SHIFT CONTROL
Maximum input voltage 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V
Minimum input voltage 6.5 V 6.5 V 6.5 V 6.5 V 6.5 V 6.5 V 6.5 V 6.5 V
Nominal input voltage 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V 9.5 V
JESD-30 code R-PDSO-G20 R-PDSO-G20 R-PDSO-G20 R-PDSO-G20 R-PDSO-G20 R-PDIP-T20 R-PDIP-T20 R-PDSO-G20
JESD-609 code e3 e0 e0 e3 e3 e3 e3 e3
Humidity sensitivity level 1 1 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1 1 1
Number of terminals 20 20 20 20 20 20 20 20
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP SSOP SSOP DIP DIP SSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH IN-LINE IN-LINE SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 235 255 260 260 250 250 260
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 2 mm 2 mm 2 mm 2 mm 2 mm 3.937 mm 3.937 mm 2 mm
surface mount YES YES YES YES YES NO NO YES
Switch configuration PHASE-SHIFT PHASE-SHIFT PHASE-SHIFT PHASE-SHIFT PHASE-SHIFT PHASE-SHIFT PHASE-SHIFT PHASE-SHIFT
Maximum switching frequency 1000 kHz 1000 kHz 1000 kHz 1000 kHz 1000 kHz 1000 kHz 1000 kHz 1000 kHz
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING THROUGH-HOLE THROUGH-HOLE GULL WING
Terminal pitch 0.65 mm 0.65 mm 0.65 mm 0.65 mm 0.65 mm 2.54 mm 2.54 mm 0.65 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 20 40 30 30 40 40 30
width 5.3 mm 5.3 mm 5.3 mm 5.3 mm 5.3 mm 7.62 mm 7.62 mm 5.3 mm
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) - -
length 7.2 mm 7.2 mm 7.2 mm 7.2 mm 7.2 mm - - 7.2 mm
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