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TPS54291PWPR Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce TPS54291PWPR
Description  1.5-A/2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET
Download  33 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

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TPS54290, TPS54291, TPS54292
SLUS973 – OCTOBER 2009
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TJ = –40°C to 125°C, PVDD1 and 2 = 12V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
BOOTSTRAP (Applied to both channels)
RBOOT
Bootstrap switch resistance
R(BP to BOOT), I external = 10 mA
33
Ω
PGOOD
VUV
Feedback voltage limit for PGOOD
660
730
mV
VPG-HYST
(3)
PGOOD hysteresis voltage on FB
40
mV
OUTPUT STAGE (Applied to both channels)
On resistance of high-side FET
RDS(on1)(HS)
(3)
170
265
m
Ω
and bondwire on CH1
On resistance of high-side FET
RDS(on2)(HS)
(3)
120
190
m
Ω
and bondwire on CH2
On resistance of low-side FET and
m
Ω
RDS(on1)(LS)
(3)
120
190
bondwire on CH1
On resistance of low-side FET and
RDS(on2)(LS)
(3)
90
150
m
Ω
bondwire on CH2
tON_MIN
(3)
Miimum controllable pulse width
150
ns
Minimum duty
VFB = 0.9 V
0%
cycle
HDRV off to LDRV on
20
ns
tDEAD
(3)
Output driver dead time
LDRV off to HDRV on
20
ns
TPS54290
90%
96%
DMAX
Maximum duty cycle
TPS54291
85%
91%
TPS54292
78%
82%
THERMAL SHUTDOWN
TSD
(3)
Shutdown temperature
145
°C
TSD_HYS
(3)
Hysteresis
20
°C
(3)
Specified by design. Not tested in production.
4
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Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s) :TPS54290 TPS54291 TPS54292


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