TPS40193DRCT Part Information

Details for TPS40193DRCT by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

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Part Description

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.

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Part Features

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

Part Specifications

Supply Voltage Min 4.5V
Supply Voltage Max 18V
No. of Outputs 1 Output, 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
RoHS Compliant

Alternative Part Descriptions

  • 4.5-V to 18-V, 20-A, 300-kHz synchronous buck controller with power good | Texas Instruments

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