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

X  

TPS2321 Datasheet(PDF) 3 Page - Texas Instruments

Click here to check the latest version.
No. de pieza TPS2321
Descripción Electrónicos  DUAL HOT SWAP POWER CONTROLLER WITH INDEPENDENT CIRCUIT BREAKER
Download  22 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS2321 Datasheet(HTML) 3 Page - Texas Instruments

  TPS2321 Datasheet HTML 1Page - Texas Instruments TPS2321 Datasheet HTML 2Page - Texas Instruments TPS2321 Datasheet HTML 3Page - Texas Instruments TPS2321 Datasheet HTML 4Page - Texas Instruments TPS2321 Datasheet HTML 5Page - Texas Instruments TPS2321 Datasheet HTML 6Page - Texas Instruments TPS2321 Datasheet HTML 7Page - Texas Instruments TPS2321 Datasheet HTML 8Page - Texas Instruments TPS2321 Datasheet HTML 9Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 22 page
background image
TPS2320, TPS2321
DUAL HOT SWAP POWER CONTROLLER
WITH INDEPENDENT CIRCUIT BREAKER
SLVS276A – MARCH 200 – REVISED APRIL 2000
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description
DISCH1, DISCH2 – DISCH1 and DISCH2 should be connected to the sources of the external N-channel
MOSFET transistors connected to GATE1 and GATE2, respectively. These pins discharge the loads when the
MOSFET transistors are disabled. They also serve as reference-voltage connections for internal gate
voltage-clamp circuitry.
ENABLE or ENABLE – ENABLE for TPS2320 is active low. ENABLE for TPS2321 is active high. When the
controller is enabled, both GATE1 and GATE2 voltages will power up to turn on the external MOSFETs. When
the ENABLE pin is pulled high for TPS2320 or the ENABLE pin is pulled low for TPS2321 for more than 50
µs,
the gate of the MOSFET is discharged at a controlled rate by a current source, and a transistor is enabled to
discharge the output bulk capacitance. In addition, the device turns on the internal regulator PREREG (see
VREG) when enabled and shuts down PREREG when disabled so that total supply current is much less than
5
µA.
FAULT – FAULT is an open-drain overcurrent flag output. When an overcurrent condition in either channel is
sustained long enough to charge TIMER to 0.5 V, the overcurrent channel latches off and pulls FAULT low. The
other channel will run normally if not in overcurrent.
GATE1, GATE2 – GATE1 and GATE2 connect to the gates of external N-channel MOSFET transistors. When
the device is enabled, internal charge-pump circuitry pulls these pins up by sourcing approximately 15
µA to
each. The turnon slew rates depend upon the capacitance present at the GATE1 and GATE2 terminals. If
desired, the turnon slew rates can be further reduced by connecting capacitors between these pins and ground.
These capacitors also reduce inrush current and protect the device from false overcurrent triggering during
powerup. The charge-pump circuitry will generate gate-to-source voltages of 9 V–12 V across the external
MOSFET transistors.
IN1, IN2 – IN1 and IN2 should be connected to the power sources driving the external N-channel MOSFET
transistors connected to GATE1 and GATE2, respectively. The TPS2320/TPS2321 draws its operating current
from IN1, and both channels will remain disabled until the IN1 power supply has been established. The IN1
channel has been constructed to support 3-V, 5-V, or 12-V operation, while the IN2 channel has been
constructed to support 3-V or 5-V operation
ISENSE1, ISENSE2, ISET1, ISET2 – ISENSE1 and ISENSE2, in combination with ISET1 and ISET2,
implement overcurrent sensing for GATE1 and GATE2. ISET1 and ISET2 set the magnitude of the current that
generates an overcurrent fault, through external resistors connected to ISET1 and ISET2. An internal current
source draws 50
µA from ISET1 and ISET2. With a sense resistor from IN1 to ISENSE1 or from IN2 to ISENSE2,
which is also connected to the drains of external MOSFETs, the voltage on the sense resistor reflects the load
current. An overcurrent condition is assumed to exist if ISENSE1 is pulled below ISET1 or if ISENSE2 is pulled
below ISET2.
TIMER – A capacitor on TIMER sets the time during which the power switch can be in overcurrent before turning
off. When the overcurrent protection circuits sense an excessive current, a current source is enabled which
charges the capacitor on TIMER. Once the voltage on TIMER reaches approximately 0.5 V, the circuit-breaker
latch is set and the power switch is latched off. Power must be recycled or the ENABLE pin must be toggled
to restart the controller. In high-power or high-temperature applications, a minimum 50-pF capacitor is strongly
recommended from TIMER to ground, to prevent any false triggering.
VREG – The VREG pin is the output of an internal low-dropout voltage regulator. This regulator draws current
from IN1. A 0.1-
µF ceramic capacitor should be connected between VREG and ground. VREG can be
connected to IN1, IN2, or to a separated power supply through a low-resistance resistor. However, the voltage
on VREG must be less than 5.5 V.


Número de pieza similar - TPS2321

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS2321 TI-TPS2321 Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
TPS2321 TI-TPS2321 Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
TPS2321 TI-TPS2321 Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
TPS2321ID TI-TPS2321ID Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
TPS2321ID TI-TPS2321ID Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
More results

Descripción similar - TPS2321

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Texas Instruments
TPS2320IDRG4 TI-TPS2320IDRG4 Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
TPS2320IPW TI-TPS2320IPW Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
TPS2321IPW TI-TPS2321IPW Datasheet
503Kb / 26P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER
TPS2300 TI-TPS2300 Datasheet
422Kb / 22P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLER WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TPS2300IPWR TI1-TPS2300IPWR Datasheet
456Kb / 25P
[Old version datasheet]   DUAL HOT-SWAP POWER CONTROLLERS WITH INDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TPS2310 TI-TPS2310 Datasheet
423Kb / 22P
[Old version datasheet]   DUAL HOT SWAP POWER CONTROLLER WITH INTERDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
TPS2330 TI-TPS2330 Datasheet
345Kb / 20P
[Old version datasheet]   SINGLE HOT SWAP POWER CONTROLLER WITH CIRCUIT BREAKER AND POWER-GOOD REPORTING
TPS2310 TI1-TPS2310_15 Datasheet
1Mb / 27P
[Old version datasheet]   DUAL HOT-SWAP POWER CONTROLLERS WITH INTERDEPENDENT CIRCUIT BREAKER AND POWER-GOOD REPORTING
logo
Linear Technology
LT4220 LINER-LT4220_15 Datasheet
265Kb / 16P
   Dual Supply Hot Swap Controller
LTC1646 LINER-LTC1646 Datasheet
407Kb / 20P
   CompactPCI Dual Hot Swap Controller
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


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