Description
TPS57140QDRCRQ1
Overview
The TPS57140QDRCRQ1 is a 4A, 42V step-down converter with integrated high-side and low-side MOSFETs. This device is designed to provide high efficiency, high reliability, and a compact solution for a wide range of applications, including industrial and consumer electronics.
Features
- High Efficiency: Up to 95% efficiency at heavy loads
- Input Voltage Range: 4.5V to 42V
- Output Voltage Range: 0.9V to 15.5V
- Output Current: Up to 4A
- Switching Frequency: 100 kHz to 2.5 MHz
- Power Good Indication: Dedicated open-drain power good (PG) output
- Overcurrent Protection: Cycle-by-cycle current limiting
- Overvoltage Protection: Overvoltage clamp and output overvoltage protection
- Undervoltage Protection: Input undervoltage lockout
- Thermal Shutdown: Protection against overheating
- Package: 10-pin QFN package, 3mm x 3mm (DRC)
Applications
- Industrial power supplies
- Point of load (POL) converters
- Automotive systems
- Telecom and datacom equipment
- Consumer electronics
Functionality
The TPS57140QDRCRQ1 step-down converter operates in pulse-width modulation (PWM) mode. It includes an internal voltage reference, error amplifier, and internal soft-start circuitry to reduce inrush current during start-up. The device has an enable (EN) pin to control the output voltage and to implement remote shutdown.
Seamless Transition Between PWM and PFM Modes
For improved efficiency at light loads, the device can automatically switch between PWM and pulse-frequency modulation (PFM) modes, reducing switching losses.
Setting the Output Voltage
The output voltage is set using an external resistor divider. The device has internal compensation and does not require external components for stability, making the design simpler and more cost-effective.
Protection Features
The TPS57140QDRCRQ1 incorporates several protection features, including overcurrent protection (OCP), overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown (TSD). These features enhance the reliability of the power supply system.
Technical Specifications
- Input Voltage: 4.5V to 42V
- Output Voltage: 0.9V to 15.5V
- Output Current: Up to 4A
- Switching Frequency: Adjustable from 100 kHz to 2.5 MHz
- Maximum Duty Cycle: 98%
- Minimum Duty Cycle: 5%
- Input Undervoltage Lockout: Typically 4.3V
- Enable Threshold: Typically 1.15V
- Soft-Start Time: Typically 4.1ms
- Thermal Shutdown: Typically 160°C
Package Information
- Package Type: QFN
- Package Size: 3mm x 3mm
- Pin Count: 10
- Package Code: DRC
- Eco Plan: Lead-free, RoHS compliant
Ordering Information
To order the TPS57140QDRCRQ1, please contact your local authorized distributor or Texas Instruments directly.
For any further details, including datasheets, application notes, or to inquire about pricing and availability, visit the official website of the manufacturer.