TPS62130ARGTR IC

Technical Specifications of TPS62130ARGTR

Datasheet	TPS62130ARGTR datasheet
Category	Integrated Circuits (ICs)
Family	PMIC – Voltage Regulators – DC DC Switching Regulators
Manufacturer	Texas Instruments
Series	DCS-Control?
Packaging	Tape & Reel (TR)
Part Status	Active
Function	Step-Down
Output Configuration	Positive
Topology	Buck
Output Type	Adjustable
Number of Outputs	1
Voltage – Input (Min)	3V
Voltage – Input (Max)	17V
Voltage – Output (Min/Fixed)	0.9V
Voltage – Output (Max)	6V
Current – Output	3A
Frequency – Switching	2.5MHz
Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	16-VFQFN Exposed Pad
Supplier Device Package	16-QFN (3×3)

TPS62130ARGTR Introduction

The TPS62130ARGTR is a synchronous step-down DC-DC converter with a high level of efficiency. It is made to work from a single-cell Li-Ion battery or a 5V input voltage, and the output voltage is regulated between 0.9V and 6V.

The device has a 1.5A switch and synchronous rectifier built in. This reduces the number of external parts and cuts down on power loss. The converter’s control architecture lets it work well with low-load currents and achieve high efficiency. This makes it perfect for portable and battery-powered applications.

TPS62130ARGTR Description

The TPS6213x family comprises synchronous step-down DC-DC converters that are easy to use and do a great job of packing a lot of power into a small space. The high switching frequency, usually 2.5 MHz, makes it possible for the DCSControl topology to respond quickly to changes in load and an accurate output voltage. This makes it possible to use small inductors. The devices can work with input voltages from 3 V to 17 V, which makes them useful for systems that use Li-Ion batteries, alternative power sources, or 12-V intermediate power rails. In 100% duty cycle mode, they can continuously output up to 3 A of current at voltages between 0.9 V and 6 V.

By controlling how the output voltage rises when the power supply starts up, the soft-start pin lets the power supply be used on its own or as part of a tracking system. The open-drain and allow Power Good pins can also be set up for power sequencing. When the devices are in power-saving mode, they use about 17 A of current from VIN. High efficiency is kept at all load levels by switching automatically to a power-saving mode when the load is low. When a device is in shutdown mode, its power is turned off, and its current use drops to less than 2 A. The device comes in a 3 mm x 3 mm, 16-pin VQFN package with output voltages that can be changed or fixed (RGT).

Detailed Description

DCS-Control powers synchronous switched-mode power converters like the TPS6213x. DCS-Control is a cutting-edge regulation topology that combines the best parts of hysteretic control, voltage mode control, current mode control, and an AC loop directly related to the output voltage. This control loop sends changes in the output voltage to a quick comparator stage. It decides the switching frequency, which stays the same when the load is in a steady state and lets the switch respond instantly to sudden changes in the load. A voltage feedback loop is used to get accurate control of a DC load.

The internal regulation network works quickly and reliably thanks to the low-ESR capacitors and few external parts. The DCS-Control topology supports a Pulse Width Modulation (PWM) mode for medium and heavy loads and a power-saving mode for light loads. During PWM, the device normally works, called continuous conduction mode. This frequency can range from about 2.5 MHz to about 1.25 MHz, depending on the voltage. When the load current drops, the converter goes into power-saving mode. This keeps the efficiency high even when the load is very light. In power-saving mode, the switching frequency drops in a straight line with the load current.

DCS-Control supports both modes of operation in a single building block, so switching from PWM to power-saving mode is smooth and doesn’t affect the output voltage. Versions with a fixed output voltage only need four extra parts, so the solution is small and uses little current. An internal current limiter lets you use nominal output currents of up to 3 A. The TPS6213x family has a very low ripple in the output voltage, good control over the DC voltage, and excellent control over load transients, causing very little interference to RF circuits.

Feature Description

Switch on or off (EN) When the Enable (EN) switch is set to High, the device starts to work. If EN is pulled low, the device turns off, usually with a 1.5 A shutdown current. All control circuitry and internal power MOSFETs are turned off during the shutdown. The voltage at the output is slowly lowered by the built-in resistive divider. An outside source sets the High or Low state of the EN signal. If Low is set at the start and the pin floats, An inbuilt 400 k pulldown resistor keeps EN logic low. If the pin is set to “High,” it breaks the connection. By connecting the EN pin to an output signal on another power rail, you can set the order of the power rails.

● Soft Start / Tracking (SS/TR)

The built-in soft start circuitry controls the output voltage slope when the device is first turned on. This stops output voltage spikes that can’t be controlled and keeps inrush current to a minimum. It also keeps the voltage from dropping because of batteries or other power sources with a high impedance. When the device is turned on (shown by the setting of EN), there is a delay of about 50 s before switching starts, and VOUT starts to rise at a rate set by an external capacitor connected to the SS/TR pin.

The device starts up as quickly as possible with a very small capacitor (or if you don’t connect the SS/TR pin). Theoretically, a startup process can take as long as it needs to. At startup, the TPS6213x has an output that is already biased. During a monotonic pre-biased start-up, both power MOSFETs are turned off until the internal ramp of the device creates an output voltage larger than the pre-bias voltage. Internally, if the output is below about 0.5 V, a lower current limit of about 1.6 A is set.

● Power Good (PG)

If the TPS6213x’s output voltage has been properly set, the power good (PG) function will light up. Several railways’ starts can be sequenced using the PG signal. A pull-up resistor is needed for the PG pin because it is an open-drain output (to any voltage below 7 V). It can take in 2 mA of electricity while staying at its logic low level. When the TPS62130 is disabled, whether, via EN, UVLO, or thermal shutdown, the output has a high impedance. To actively discharge VOUT, you can utilize the TPS62130A, which has PG = Low.

Device Functional Modes

Using Pulse Width Modulation, or PWM, With the FSW pin, you can set the TPS6213x to run at either a switching frequency of 2.5 MHz or 1.25 MHz in continuous conduction mode (CCM). The voltage at the input, the voltage at the output, and the inductance all affect the frequency of PWM. The device will keep running in PWM mode as long as the output current is higher than 50% of the inductor’s ripple current. When the device switches to discontinuous conduction mode, it goes into a power-saving mode that runs efficiently even with light loads (DCM). This happens when the output current falls below 0.5 times the inductor’s ripple current.

● Power Save Mode Operation

If the load current decreases, the TPS6213x automatically goes into its built-in power-saving mode. This keeps the efficiency high when the load is low. The device stays in power-saving mode as long as the current through the inductor isn’t steady. Power-saving mode lowers switching frequency depending on current use. This keeps efficiency at a high level. The change from power save mode to normal mode happens within the control system and is smooth in both directions.

Conclusion

The TPS62130ARGTR is an excellent choice for portable and battery-powered applications demanding long battery life and high efficiency. By considering the key factors involved in its design, such as input and output capacitor selection, inductor selection, feedback resistor selection, soft-start time selection, PCB layout, and thermal considerations, you can ensure optimal performance and reliability of your circuit. At ICRFQ, we offer affordable, affordable electronic parts, including the TPS62130ARGTR. So if you have any questions or wish to place an order, please don’t hesitate to contact us. We’re always here to help.

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