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Details for TPS40400RHLR by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
TPS40400RHLR
Buy Directly from Texas Instruments (7593 in stock) $1.7600
IC DCDC CTRLR SYNC BUCK 24QFN
TPS40400RHLR image

TPS40400RHLR by Texas Instruments

IC DCDC CTRLR SYNC BUCK 24QFN
Features
24-Pin QFN Package
Inductor Resistance or Series Resistance Used for Current Sensing
Input Operating Voltage Range: 3 V to 20 V
Internal 6-V Regulator and 6-V Gate Drive
Internal Bootstrap Diode
PMBus Enabled Analog Controller
Powergood Indicator
Prebias Output Safe
Programmable Overcurrent Protection
Programmable Soft-Start
Programmable Switching Frequency: 200 kHz to 2 MHz
Reference 600 mV u00b1 1%
Remote Voltage Sense Amplifier
Thermal Shutdown
Part Information
TPS40400RHLR image
RoHS Compliant
Description
The TPS40400 is a cost-optimized flexible synchronous buck controller that operates from a nominal 3-V to 20-V supply. This controller is an analog PWM controller that allows programming and monitoring through the PMBus™ interface. Flexible features found on this device include programmable soft-start time, programmable short circuit limit, and programmable undervoltage lockout (UVLO). An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Gate drive voltage is 6 V to better enhance the power FETs for reduced losses. Short circuit detection occurs by sensing the voltage drop across the inductor or across a resistor placed in series with the inductor. A PMBus programmable threshold is compared to this voltage and is used to detect overcurrent. When the overcurrent threshold is reached, a pulse by pulse current limit scheme is used to limit the current to acceptable levels. If the overcurrent condition persists for more than 7 clock cycles of the converter, a fault condition is declared and the converter shuts down and goes into either a hiccup restart mode or latches off. The behavior can be selected through the PMBus interface. Other PMBus interface features include programmable operating frequency, soft-start time, overvoltage and undervoltage thresholds and the response to those events, output voltage change including margining as well as status monitoring.
Specifications
Supply Voltage Min:
3V
Supply Voltage Max:
20V
No. of Outputs:
1 Output, 1Outputs
Duty Cycle (%):
90%
Controller IC Case Style:
VQFN
No. of Pins:
24Pins
Switching Frequency:
2MHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 2 - 1 year
SVHC:
No SVHC (27-Jun-2018)
Input Voltage Max:
20V
Input Voltage Min:
3V
Operating Temperature Range:
-40°C to +125°C
Output Current:
30A
Primary Input Voltage:
20V
Alternate Descriptions
3.0V - 20V, 30A, Synchronous Buck Controller with PMBus™, including Telemetry Texas Instruments