TPS54240DGQR is a non-synchronous step-down DC-DC power supply chip from Texas Instruments. TOPCHIP ELECTRONICS, which sells Texas Instruments' full range of IC electronic components as an agent, will provide you with detailed explanations of TPS54240DGQR parameters, functional features, application fields, etc.
Detailed explanation of TPS54240DGQR parameters
Brand: Texas Instruments
Product Series: Power Management IC - DC-DC Power Chip
Packaging: Tape and Reel (TR), Cut Tape (CT)
Series: SWIFT, Eco-Mode?
Part status: active
Function: step down
Output configuration: positive
Topology: Buck, divider rail
Output type: adjustable
Number of outputs: 1
Voltage - Input (minimum): 3.5V
Voltage - Input (maximum): 42V
Voltage - Output (min/fixed): 0.8V
Voltage - Output (max): 39V
Current - Output: 2.5A
Frequency-Switch: 100kHz ~ 2.5MHz
Synchronous rectifier: none
Working temperature: -40°C ~ 150°C (TJ)
Installation type: surface mount type
Product packaging: 10-TFSOP, 10-MSOP (0.118, 3.00mm wide)
TPS54240DGQR features
1. Wide input voltage range: suitable for a variety of different power input conditions.
2. High efficiency: Using advanced power MOSFET devices and control algorithms to achieve efficient power conversion.
3. Adjustable output voltage: The output voltage can be adjusted through external components to meet the needs of different applications.
4. Ultrasonic transmission mode: Using constant frequency PWM control, it is helpful to reduce the size of the output filter and improve system efficiency.
5. Protection function: It has multiple protection functions such as overload protection and over-temperature protection to improve the reliability of the system.
TPS54240DGQR application fields
TPS54240DGQR is widely used in power systems that require step-down voltage regulation. Specific applications include but are not limited to:
1. Communication equipment: such as base stations, communication servers, etc.
2. Industrial automation: used for industrial control systems, robots, sensors and other equipment.
3. Automotive electronics: Suitable for power management and voltage stabilization in automotive electronic systems.
4. Consumer electronics: such as TVs, monitors, audio equipment, etc.
TPS54240DGQR pin diagram and detailed explanation of pin functions
1. TPS54240DGQR pin diagram
2. Detailed explanation of TPS54240DGQR pin functions:
1. BOOT (Pin 1): A bootstrap capacitor is required between BOOT and PH. If the voltage across this capacitor is below the minimum required by the output device. The output is forced off until the capacitor redischarges 1s
2. VIN (Pin 2): Error amplifier output and input to the output switch current comparator. Connect the Frequency Compensation Compensation 8O component to this pin.
3.EN (Pin 3): Enable pin, internal pull-up current source. Pull below 1.2V to disable. Float enabled. Adjusting input EN3 I implement undervoltage lockout via two resistors
4.SS/TR (Pin 4): Slow start and tracking. An external capacitor connected to this pin sets the output rise time. Since the SS/TR4I voltage on this pin overrides the internal reference, it can be used for tracking and sequencing.
5.RT/CLK (Pin 5): Resistor timing and external clock. An internal amplifier maintains this pin at a fixed voltage when an external resistor to ground is used to set the switching frequency. If the pin is pulled above the PLL upper threshold, a mode change occurs for RT/CLK Type 5I and the pin becomes a synchronization input. The internal amplifier is disabled, and this pin is the high-impedance clock input to the internal PLL. If the clock edge is stopped, the internal amplifier is re-enabled and the mode returns to the resistor setting function.
6.PWRGD (pin 6): open-drain output, if the output voltage is turned off due to thermal shutdown, dropout, overvoltage or 6OEN of PWRGD.
7.VSENSE (Pin 7): Current detection pin.
8.COMP (Pin 8): Compensation pin, used to connect external compensation network.
9.GND (Pin 9): Ground
10.PH (Pin 10): Phase node of the PWM controller.
TPS54240DGQR working principle
TPS54240DGQR uses a non-synchronous buck topology to achieve voltage conversion through a PWM controller and external components (inductor, diode, output capacitor). When the input voltage is applied to the VIN pin, the controller starts to work and adjusts the working state of the circuit through the internal PWM controller and MOSFET switch to output a stable buck voltage. By controlling the duty cycle of PWM, the output voltage can be adjusted.
Instructions for use of TPS54240DGQR
1. Input voltage range: Make sure the input voltage is within the specified range to avoid damaging the device.
2. Output load: Connect the appropriate inductor and output capacitor according to the data sheet requirements to ensure stable output voltage and current.
3. Temperature: During use, pay attention to heat dissipation and temperature control to avoid overheating that affects performance and lifespan.
4. External components: Correctly connect external components such as inductors, diodes and output capacitors according to the data sheet requirements.
5. Protection function: Understand the protection function of the chip and rationally design the circuit to ensure the safety and reliability of the system.
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