Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

TPS24720 Datasheet(PDF) 9 Page - Texas Instruments

Click here to check the latest version.
No. de pieza TPS24720
Descripción Electrónicos  2.5-V to 18-V High-Efficiency Adjustable Power-Limiting Hot-Swap Controller With Current
Download  37 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TPS24720 Datasheet(HTML) 9 Page - Texas Instruments

Back Button TPS24720 Datasheet HTML 5Page - Texas Instruments TPS24720 Datasheet HTML 6Page - Texas Instruments TPS24720 Datasheet HTML 7Page - Texas Instruments TPS24720 Datasheet HTML 8Page - Texas Instruments TPS24720 Datasheet HTML 9Page - Texas Instruments TPS24720 Datasheet HTML 10Page - Texas Instruments TPS24720 Datasheet HTML 11Page - Texas Instruments TPS24720 Datasheet HTML 12Page - Texas Instruments TPS24720 Datasheet HTML 13Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 37 page
background image
LIM
PROG
SENSE
3125
P
R
R
=
´
J(MAX)
C(MAX)
LIM
θJC(MAX)
T
T
P
<
R
-
SET
LIM
IMON
SENSE
0.675 V
R
I
=
R
R
´
´
T
FLT
10 A
C =
t
1.35 V
´
TPS24720
www.ti.com
SLVSAL1B
– MARCH 2011 – REVISED MAY 2011
VENSD is below its threshold.
VVCC drops below the UVLO threshold.
VOV is above its rising threshold.
Die temperature exceeds the OTSD threshold.
This pin can be left floating when not used.
PROG: A resistor from this pin to GND sets the maximum power permitted in the external MOSFET M1 during
inrush. Do not apply a voltage to this pin. If the constant power limit is not desired, use a PROG resistor of
4.99 k
Ω. To set the maximum power, use Equation 1,
(1)
where PLIM is the allowed power limit of MOSFET M1. RSENSE is the load-current-monitoring resistor connected
between the VCC pin and the SENSE pin. RPROG is the resistor connected from the PROG pin to GND. Both
RPROG and RSENSE are in ohms and PLIM is in watts. PLIM is determined by the maximum allowed thermal stress of
MOSFET M1, given by Equation 2,
(2)
where TJ(MAX) is the maximum desired transient junction temperature and TC(MAX) is the maximum case
temperature prior to a start or restart. RӨJC(MAX) is the junction-to-case thermal impedance of the pass MOSFET
M1 in units of °C/W. Both TJ(MAX) and TC(MAX) are in °C.
SENSE: This pin connects to the negative terminal of RSENSE. It provides a means of sensing the voltage across
this resistor, as well as a way to monitor the drain-to-source voltage across the external FET. The current limit
ILIM is set by Equation 3.
(3)
A fast-trip shutdown occurs when V(VCC – VSENSE) exceeds 60 mV.
SET: A resistor RSET is connected from this pin to the positive terminal of RSENSE. This resistor scales the current
limit and power limit settings. It coordinates with RIMON and RSENSE to determine the current limit value. The value
of RSET can be calculated from Equation 3 (see SENSE).
TIMER: A capacitor CT connected from the TIMER pin to GND determines the overload fault timing. TIMER
sources 10
µA when an overload is present, and discharges CT at 10 µA otherwise. M1 is turned off when VTIMER
reaches 1.35 V. In an application implementing auto-retry after a fault, this capacitor also determines the period
before the external MOSFET is re-enabled. A minimum timing capacitance of 1 nF is recommended to ensure
proper operation of the fault timer. The value of CT can be calculated from the desired fault time tFLT, using
Equation 4.
(4)
As is explained in the description of the LATCH pin, either latch mode or retry mode occurs if the load current
exceeds the current limit threshold or the fast-trip shutdown threshold, depending on the status of the LATCH
pin. While in latch mode, the TIMER pin continues to charge and discharge the attached capacitor periodically. In
retry mode, the external MOSFET is disabled for sixteen cycles of TIMER charging and discharging. The TIMER
pin is pulled to GND by a 2-mA current source at the end of the 16th cycle of charging and discharging. The
external MOSFET is then re-enabled. The TIMER pin capacitor, CT, can also be discharged to GND during latch
mode or retry mode in the following two ways:
1. A 2-mA current sinks TIMER whenever any of the following occurs:
– VEN is below its falling threshold.
– VVCC drops below the UVLO threshold.
– VOV is above its rising threshold.
2. A 100-k
Ω resistor is connected to TIMER and discharges CT at the moment when VENSD drops below its
threshold.
Copyright
© 2011, Texas Instruments Incorporated
Submit Documentation Feedback
9
Product Folder Link(s): TPS24720


Número de pieza similar - TPS24720

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS24700 TI1-TPS24700 Datasheet
1Mb / 29P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Hot-Swap Controller
TPS24700DGK TI1-TPS24700DGK Datasheet
1Mb / 29P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Hot-Swap Controller
TPS24700DGKR TI1-TPS24700DGKR Datasheet
1Mb / 29P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Hot-Swap Controller
TPS24701 TI1-TPS24701 Datasheet
1Mb / 29P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Hot-Swap Controller
TPS24701DGK TI1-TPS24701DGK Datasheet
1Mb / 29P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Hot-Swap Controller
More results

Descripción similar - TPS24720

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS24710 TI1-TPS24710 Datasheet
2Mb / 34P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Power-Limiting Hot-Swap Controller
TPS24710 TI1-TPS24710_17 Datasheet
2Mb / 38P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Power-Limiting Hot-Swap Controller
TPS24700 TI1-TPS24700 Datasheet
1Mb / 29P
[Old version datasheet]   2.5-V to 18-V High-Efficiency Hot-Swap Controller
TPS24710 TI1-TPS24710_15 Datasheet
2Mb / 38P
[Old version datasheet]   High-Efficiency Power-Limiting Hot-Swap Controller
TPS24740 TI1-TPS24740 Datasheet
2Mb / 61P
[Old version datasheet]   2.5-V to 18-V High Performance Hot Swap and ORing Controller
TPS24772 TI1-TPS24772 Datasheet
2Mb / 51P
[Old version datasheet]   2.5 to 18-V High Performance Hot Swap
logo
National Semiconductor ...
LM5067 NSC-LM5067 Datasheet
768Kb / 24P
   Negative Hot Swap / Inrush Current Controller with Power Limiting
logo
Texas Instruments
LM5067 TI1-LM5067_14 Datasheet
2Mb / 33P
[Old version datasheet]   Negative Hot Swap / Inrush Current Controller with Power Limiting
logo
National Semiconductor ...
LM5069 NSC-LM5069 Datasheet
1Mb / 22P
   Positive High Voltage Hot Swap / Inrush Current Controller with Power Limiting
LM5069 NSC-LM5069_08 Datasheet
1,006Kb / 22P
   Positive High Voltage Hot Swap / Inrush Current Controller with Power Limiting
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com