TPS40193DRCT

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Details for Texas Instruments

TPS40193DRCT

4.5V to 18V Input, 20A Synchronous Buck Controller with Power Good, 300kHz
Buy Directly from Texas Instruments (250 in Stock)
$1.0000 per unit
Series Information for TPS40193DRCT - Texas Instruments

Features

  • feature
    0.5%, 591-mV Reference
  • feature
    10-Pin 3 mm u00d7 3 mm SON Package
  • feature
    Hiccup Restart from Faults
  • feature
    High-Side and Low-Side MOSFET ON-resistance (RDS(on)) Current Sensing
  • feature
    Input Operating Voltage Range: 4.5 V to 18 V
  • feature
    Internal 4-ms Soft-Start Time
  • feature
    Internal 5-V Regulator
  • feature
    Supports Pre-Biased Outputs
  • feature
    Switching Frequency u2013 TPS40192: 600 kHz u2013 TPS40193: 300 kHz
  • feature
    Thermal Shutdown Protection at 145u00b0C
  • feature
    Three Selectable Thermally Compensated Short- Circuit Protection Levels
  • feature
    Up to 20-A Output Currents

Description

CONTROLLER BUCK SYNCH 4.518V SMD
TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltagemode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact powersupply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Short circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external resistor connected from COMP to GND. This resistor is sensed at startup and the selected threshold is latched. Pulse-by-pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This behavior provides limited power dissipation in the event of a sustained fault.

Specifications

Supply Voltage Min:
4.5V
Supply Voltage Max:
18V
No. of Outputs:
1Outputs
Duty Cycle (%):
85%
Controller IC Case Style:
SON
No. of Pins:
10Pins
Switching Frequency:
360kHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 2 - 1 year
SVHC:
No SVHC (27-Jun-2018)
Base Number:
40193
Controller Type:
Synchronous Buck
Frequency:
300kHz
Operating Temperature Range:
-40°C to +85°C
Output Current:
20A
Output Voltage:
14.4V
Primary Input Voltage:
18V
Termination Type:
Surface Mount Device
Voltage Regulator Type:
Synchronous Buck

Alternate Descriptions

Avnet America

DC DC Cntrlr Single-OUT Sync Buck 4.5V to 18V Input 10-Pin VSON EP T/R

Avnet Europe

DC DC Cntrlr Single-OUT Sync Buck 4.5V to 18V Input 10-Pin VSON EP T/R

Texas Instruments

4.5V to 18V Input, 20A Synchronous Buck Controller with Power Good, 300kHz

Texas Instruments product