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TI TI Power Management > non isolated switch DC/DC regulator  (2017/4/18 18:38:05)
TI TI Power Management > non isolated switch DC/DC regulator
TPS54291 4.5V to 18V 1.5/2.5A, 600kHz input, Dual Synchronous Buck SWIFT converter
TPS54291 description
TPS54290/1/2 is a dual output fully synchronous buck converter capable of supporting applications with a minimal number of external components. It operates from a 4.5 V to 18 V input supply voltage, and supports output voltages as low as and as high 0.8 V as 90% of the input voltage.
Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel1 can provide up to 1.5 A of continuous current, meanwhile Channel2, supports up to 2.5 A.
Current mode control the The external adds flexibility the user to choose different type of compensation output capacitors. for compensation. simplifies
180 out-of-phase operation the current through the input capacitor, providing the of reducing input capacitance, alleviating EMI increasing and capacitor life. reduces (benefit)
TPS54290 TPS54291 TPS54292
Iout (Max) (A) 2.5 2.5 2.5
Iout2 (Max) (A) 1.5 1.5 1.5
Vin (Min) (V) 4.5 4.5 4.5
Vin (Max) (V) 181818
Vout (Min) (V) 0.8 0.8 0.8
Vout (Max) (V) 16.2 15.314
Iq (Typ) (mA) 1.8 1.8 1.8
Switching Frequency (Typ) (kHz) 3006001200
Switch Current Limit (Typ) (A) 3.8 3.8 3.8
Topology Buck Buck Buck
Operating Temperature Range (C) -40 to 145 to 145 -40 to 145
Rating Catalog Catalog Catalog
Duty Cycle (Max) (%) 908578
Vout2 (Min) (V) 0.8 0.8 0.8
Vout2 (Max) (V) 16.2 15.214
Regulated Outputs (#) 222
Thermal Shutdown Yes Yes Yes
TPS54291 characteristics
4.5 V to 18 Input V Range
Output Voltage Range 0.8 to DMAX * VIN V
Fully Integrated Buck Dual, 1.5 A/2.5 A
Three Fixed Switching Frequency Versions:
TPS54290 - 300 kHz
TPS54291 - 600 kHz
TPS54292 - 1.2 MHz
Integrated UVLO
0.8 VREF With 1% Accuracy (C = 0 C to = 85)
Internal Soft-Start
TPS54290 - 5.2 MS
TPS54291 - 2.6 MS
TPS54292 - 1.3 MS
Dual PWM Outputs 180 Out-of-Phase
Dedicated Enable for Each Channel
Current Mode for Simplified Control Compensation
External Compensation
Pulse-by-Pulse Overcurrent Protection, 2.2 A/3.8 Overcurrent A Limit
Integrated Bootstrap Switch
Thermal Shutdown at 145 Protection C
TPS54291 chip ordering Guide
The device state temperature (oC) price ($) package | pin package number | silkscreen package carrier
TPS54291PWP ACTIVE -40 to 1KU HTSSOP (PWP) 1453.25 | | 1690 | TUBE 54291
TPS54291PWPR ACTIVE -40 to 1KU HTSSOP (PWP) 1452.95 | | 162000 | LARGE T&R 54291
TPS54291 quality and lead free data
Environmental protection plan * lead / solder ball coating MSL grade / reflow soldering peak environmental protection information with lead free (Pb-free) DPPM / MTBF / FIT rate
TPS54291PWP Green (RoHS & no Sb/Br) NIPDAU Level-2-260C-1 YEAR CU TPS54291PWP
TPS54291PWPR Green (RoHS & no Sb/Br) NIPDAU Level-2-260C-1 YEAR CU TPS54291PWPR
TPS54291 application technology support and electronic circuit design and development resources download
TPS54291 data download.PDF dataSheet
TI TI non isolated switch DC/DC regulator selection and price reference. Xls
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Glossary of specifications and performance characteristics (Rev. A) (PDF 1993 KB)
Thermal and electrical properties of selected packaging materials (PDF 645 KB)
High speed data conversion (PDF 1967 KB)
TPS54291 related tools
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TPS54291 reference design
Description company
Synchronous Buck Controller as 2-A Buck Inverter PMP4856 Boost Texas Doubles a Instruments © 2006-2017 Internet Thinking(Hong Kong) Electronic Co.,Limited(Copyright)