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TPS548B22RVFT Fiches technique(PDF) 9 Page - Texas Instruments

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No de pièce TPS548B22RVFT
Description  1.5-V to 18-V VIN, 4.5-V to 22-V VDD, 25-A SWIFT Synchronous Step-Down Converter with Full Differential Sense
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS548B22RVFT Fiches technique(HTML) 9 Page - Texas Instruments

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TPS548B22
www.ti.com
SLUSCE4 – JANUARY 2017
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Copyright © 2017, Texas Instruments Incorporated
(1)
Correlated with closed-loop EVM measurement at load current of 20 A.
(2)
Specified by design. Not production tested.
6.6 Timing Requirements
PARAMETER
CONDITION
MIN
NOM
MAX
UNIT
SWITCHING FREQUENCY
fSW
VO switching
frequency(1)
VIN = 12 V, VVO = 1 V, TA = 25°C
380
425
475
kHz
585
650
740
790
875
995
950
1050
1250
tON(min)
Minimum on time(2)
60
ns
tOFF(min)
Minimum off time(2)
DRVH falling to rising
300
ns
SOFT-START
tSS
Soft-start time
VOUT rising from 0 V to
95% of final set point,
RMODE_HIGH = 100 kΩ
RMODE_LOW = 60.4 kΩ
8
ms
RMODE_LOW = 53.6 kΩ
4
ms
RMODE_LOW = 47.5 kΩ
2
ms
RMODE_LOW = 42.2 kΩ
1
ms
PGOOD COMPARATOR
tPGDLY
PGOOD delay time
Delay for PGOOD going in
1
ms
Delay for PGOOD coming out
2
µs
POWER-ON DELAY
tPODLY
Power-on delay time
1.024
ms
PROTECTIONS AND OOB
tOVPDLY
OVP response time
100-mV over drive
1
µs
tUVPDLY
UVP delay filter delay time
1
ms
tHICDLY
Hiccup blanking time
tSS = 1 ms
16
ms
tSS = 2 ms
24
ms
tSS = 4 ms
38
ms
tSS = 8 ms
67
ms


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