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TPS24771 Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza TPS24771
Descripción Electrónicos  2.5 to 18-V High Performance Hot Swap
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TPS24771 Datasheet(HTML) 6 Page - Texas Instruments

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TPS24772
TPS24771
TPS24770
SLVSCZ3 – MARCH 2015
www.ti.com
Electrical Characteristics (continued)
Unless otherwise noted these limits apply to the following: -40°C < TJ<125°C; 2.5V < VVDD, VOUT < 18V; VENHS = 2 V; VOV = 0
V; VHGATE, VPGHS, VFLTB, and VIMONBUF are floating; CINR = 1nF; CFLT = 1nF; RSET = 44.2 Ω; RIMON = 2.98k Ω; RFSTP = 200 Ω;
RPLIM = 52 kΩ.
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
POWER LIMIT PROGRAMING (PLIM)
VPLIM,BIAS
Bias voltage
Sourcing 10
μA
0.65
0.675
0.7
V
RPLIM = 52 kΩ; VSENM-OUTH=12V
114.75
135
155.25
RPLIM = 105 kΩ; VSENM-OUTH=12V
56.95
67
77.05
VIMON,PL
Regulated IMON voltage during power limit
RPLIM = 261 kΩ; VSENM-OUTH=12V
18.9
27
35.1
mV
RPLIM = 105 kΩ; VSENM-OUTH=2V
341.7
402
462.3
RPLIM = 105 kΩ; VSENM-OUTH=18V
38.25
45
51.75
SLOW TRIP THRESHOLD (SET)
VOS_SET
Input referred offset (VSNS to VIMON scaling)
–150
150
µV
RSET = 44.2Ω; RIMON=3kΩ to 1.2kΩ (VSNS,CL=10mV
to 25mV)
VGE_SET
Gain error (VSNS to VIMON scaling)
(1)
–0.4%
0.4%
FAST TRIP THRESHOLD PROGRAMMING (FSTP)
IFSTP
FSTP input bias current
VFSTP=12V
95
100
105
µA
RFSTP = 200 Ω, VSNS when VHGATE
18
20
22
VFASTRIP
Fast trip threshold
RFSTP = 1 kΩ, VSNS when VHGATE
95
100
105
mV
RFSTP = 4 kΩ, VSNS when VHGATE
380
400
420
CURRENT SUMMING NODE (IMON)
VIMON,CL
Slow trip threshold at summing node
VIMON↑, when ITFLT starts sourcing
660
675
690
mV
IIMON-LKG
IMON leakage current
VENHS =0V, VIMON = 1.5V
–200
200
nA
CURRENT MONITOR (IMONBUF)
VOS_IMONBUF
Buffer offset
VIMON = 50mV to 675mV, Input referred
–3
0
3
mV
GAINIMONBUF
Buffer voltage gain
ΔVIMONBUF / ΔVIMON
2.97
2.99
3.01
V
BWIMONBUF
Buffer closed loop bandwidth
CIMONBUF = 75pF
1
MHz
Hot Swap GATE DRIVER (HGATE)
5
≤ VVDD ≤ 16V; measure VHGATE-OUTH
12
13.6
15.5
V
VHGATE
HGATE output voltage
2.5V <VVDD < 5V;
7
7.95
15
V
16V <VVDD < 20V measure VHGATE-OUTH
VHGATEmax
Clamp voltage
Inject 10
μA into HGATE, measure V(HGATE – OUTH)
12
13.9
15.5
V
IHGATEsrc
Sourcing current
VHGAT-OUTH = 2V-10V
44
55
66
µA
IHGATEfastSink
Sinking current for fast trip
VHGATE-OUTH = 2V–15V; V(FSTP – SENM) = 20mV
0.45
1
1.6
A
IHGATEsustSink
Sustained sinking current
Sustained, VHGATE-OUTH = 2V – 15V; VENHS = 0
30
44
60
mA
INRUSH TIMER (TINR)
ITINRsrc
Sourcing current
VTINR = 0V, In power limit or current limit
8
10.25
12.5
µA
ITINRsink
Sinking current
VTINR = 2V, In regular operation
1.5
2
2.5
µA
VTINRup
Upper threshold voltage
Raise VTINR until HGATE starts sinking
1.3
1.35
1.4
V
Raise VTINR to 2V. Reduce VTINR until ITINR is
VTINRlr
Lower threshold voltage
0.33
0.35
0.37
v
sourcing.
RTINR
Bleed down resistance
VVDD = 0V, VTINR = 2V
70
104
130
k
Ω
ITINR-PD
Pulldown current
VTINR = 2V, when VENHS = 0V
2
4.2
7
mA
RETRYCYCLE
Cycle number
# of timer cycles before retry (TPS24771 only)
64
64
64
TFLT and TINR connected (TPS24771 only)
0.70%
RETRYDUTY
Retry duty cycle
TFLT and TINR not connected (TPS24771 only)
0.35%
RPLIM = 52kΩ, VSENM = 12V, VOUTH = 0 V. Raise
See Using Soft Start - IHGATE and TINR
VIMON,TINR
IMON voltage and record IMON when TINR starts
47.75
90
132.25
mV
Considerations
sourcing current.
RPLIM = 52kΩ, VSENM-OUTH = 12V, Raise IMON
See Using Soft Start - IHGATE and TINR
VIMON,PL
voltage and record IMON when IHGATE starts sinking
114.75
135
155.25
mV
Considerations
current.
See Using Soft Start - IHGATE and TINR
ΔVIMON,TINR
ΔVIMON,TINR = VIMON,PL - VIMON,TINR
23
45
67
mV
Considerations
(1)
Specified by characterization.
6
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Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: TPS24772 TPS24771 TPS24770


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