TPS40400RHLR Semiconductors - ICs by Texas Instruments

IC DCDC CTRLR SYNC BUCK 24QFN

Electronic & Electrical Components>Semiconductors - ICs>Power Management
Status: Unknown
Series: -
RoHS: Unknown
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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.

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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

Alternative Descriptions

3-V to 20-V, 30-A, synchronous buck controller with PMBus™, including Telemetry | Texas Instruments

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The TPS40400RHLR is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.

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This part has not been flagged as RoHS Compliant.

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