TPS56121DQPT

Name: TPS56121DQPT
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

Operating temperature -40 to 125 degrees

7,108 Effective Inventory

TPS56121DQPT

Effective Inventory7,108

Operating temperature -40 to 125 degrees

Manufacturer Part # : TPS56121DQPT
Package/Case: LSON-CLIP (DQP)-22
Brand: Texas Instruments
Product Categories : Voltage Regulators , DC DC Switching Regulators
Series : TPS56121

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TPS56121DQPT DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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TPS56121DQPT Details

The TPS56121DQPT is a highly efficient synchronous step-down DC-DC converter from Texas Instruments, designed for various power supply applications. This converter provides an output voltage range of 0.6V to VIN, making it suitable for a wide range of devices requiring efficient power conversion. It features a high switching frequency, integrated FETs, and a small package size, offering compact and efficient power solutions.

Pinout

1 (VIN): Input Voltage
2 (ENA): Enable Input
3 (VOUT): Output Voltage
4 (PGND): Power Ground
5 (BST): Bootstrap Capacitor Connection
6 (SW): Switch Node Connection
7 (SS/TR): Soft Start/Track Control
8 (FB): Feedback Voltage
9 (AGND): Analog Ground

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

High Efficiency: Provides high conversion efficiency for optimal power usage.
Wide Input Voltage Range: Accepts input voltages ranging from 2.95V to 6V.
Integrated FETs: Features integrated power MOSFETs for simplified design and space-saving.
Small Package Size: Housed in a compact package for easy integration and space-constrained applications.
Fixed Frequency Operation: Operates at a fixed switching frequency for predictable performance.

Application

Power Supply: Ideal for power supply applications requiring efficient and precise power conversion.
Portable Devices: Suitable for use in portable electronic devices where power efficiency and small form factor are critical.
Embedded Systems: Used in embedded systems to provide reliable and efficient power solutions.

Where to Use

The TPS56121DQPT is suitable for various applications that require efficient and compact power conversion. It can be used in power supply designs for portable devices, embedded systems, and any other application where efficient power conversion is essential.

How to Use

Connect the TPS56121DQPT to your circuit by wiring the VIN pin to the input voltage source. The ENA pin is used to enable or disable the converter. The VOUT pin provides the output voltage. Carefully follow the datasheet guidelines for component selection, feedback loop design, and input/output capacitor requirements. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the TPS56121DQPT illustrates how to connect the converter to your power supply design. It includes connections for input voltage, output voltage, and feedback loop components, ensuring proper operation and efficient power conversion.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

TPS56120DQPT: A similar DC-DC converter from Texas Instruments offering comparable features and performance.
LTC3620: An alternative synchronous step-down converter from Linear Technology with equivalent functionality.

Complementary

The TPS56121DQPT can be complemented by the TPS56321DQPT, which offers additional features such as higher output current capability and wider input voltage range, suitable for more demanding power supply applications.

When selecting complementary converters, ensure that their features and specifications align with your specific power requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the input voltage range supported by the TPS56121DQPT?

A: The TPS56121DQPT accepts input voltages ranging from 2.95V to 6V. For more details, refer to the datasheet for specific operating conditions and limitations.

Q: Can the TPS56121DQPT be used in battery-powered devices?

A: Yes, the TPS56121DQPT is suitable for battery-powered applications, offering high efficiency and compact size for power-constrained devices.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Vin (min) (V)	4.5	Vin (max) (V)	14
Vout (min) (V)	0.6	Vout (max) (V)	12
Iout (max) (A)	15	Iq (typ) (mA)	2.5
Switching frequency (min) (kHz)	300	Switching frequency (max) (kHz)	1000
Features	Adjustable current limit, Enable, Forced PWM, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Fixed	Operating temperature range (°C)	-40 to 125
Rating	Catalog	Regulated outputs (#)	1
Control mode	Voltage mode	Duty cycle (max) (%)	93
Type	Converter

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification TPS56121DQPT PDF Download

FAQs

What is TPS56121DQPT?

The TPS56121DQPT is a high efficiency, 5.5V input, 1.5A step-down regulator from Texas Instruments. It is designed to provide a regulated output voltage from an input voltage source for various industrial and consumer applications.

How Does TPS56121DQPT Work?

The TPS56121DQPT works by efficiently converting a higher input voltage to a lower regulated output voltage using a step-down (buck) topology. It utilizes pulse-width modulation (PWM) to control the output voltage and current based on the input and output conditions. The regulator features a power good indicator for monitoring the output voltage status.

How Many Pins does TPS56121DQPT have and What are the Functions of the Pinout Configuration?

The TPS56121DQPT is housed in a 20-pin HTSSOP (PowerPAD™) package. The pinout configuration includes:

VIN: Input voltage pin.
PGND: Power ground pin.
BST: Bootstrap capacitor pin for high-side MOSFET gate drive.
SW: Switching node for the internal MOSFET switch.
RT/SS: External resistor divider or soft start pin.
COMP: Compensation pin for loop stability.
FB: Voltage feedback pin.
SENSE: Current sense input pin for cycle-by-cycle overcurrent protection.
EN: Enable pin for turning the regulator on/off.
PWRGD: Power good indicator output pin.
AGND: Analog ground pin.
VOUT: Regulated output voltage pin.

What are the Pros and Cons of TPS56121DQPT?

Pros:

High Efficiency: Provides high efficiency power conversion for extended battery life or reduced heat dissipation.
Wide Input Voltage Range: Supports a wide input voltage range, enhancing versatility in various applications.
Power Good Indicator: Includes a power good output for system monitoring and sequencing.
External Synchronization: Allows synchronization to an external clock for noise-sensitive applications.
Protection Features: Offers thermal shutdown and overcurrent protection for robust system operation.

Cons:

Layout Considerations: Requires careful attention to layout and thermal management for optimal performance.
External Components: May require external components such as inductors, capacitors, and resistors for proper operation.
Complexity: Buck regulators may have a steeper learning curve compared to linear regulators for some designers.

Are There Any Equivalents/Alternatives to TPS56121DQPT for Recommendation?

The TPS563200 from Texas Instruments is a similar 1.5A step-down regulator with additional features.
Alternatives to the TPS56121DQPT include the LM2675 from Texas Instruments and the LT1763 from Analog Devices.