TPS61230ARNSR IC

Technical Specifications of TPS61230ARNSR

Datasheet	TPS61230ARNSR datasheet
Category	Integrated Circuits (ICs)
Family	PMIC – Voltage Regulators – DC DC Switching Regulators
Manufacturer	Texas Instruments
Series	–
Packaging	Tape & Reel (TR)
Part Status	Active
Function	Step-Up
Output Configuration	Positive
Topology	Boost
Output Type	Adjustable
Number of Outputs	1
Voltage – Input (Min)	2.5V
Voltage – Input (Max)	4.5V
Voltage – Output (Min/Fixed)	2.5V
Voltage – Output (Max)	5.5V
Current – Output	6A (Switch)
Frequency – Switching	1.15MHz
Synchronous Rectifier	Yes
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	7-VFQFN
Supplier Device Package	7-VQFN-HR (2×2)

TPS61230ARNSR Description

The TPS61230A is a very efficient synchronous boost converter that features full integration. It can produce up to 2.4 A at 5 V from a 2.5 V input and has power switches rated at 6 A, 21 m, and 18 m. With low RDS_ON switches, it is possible to achieve a power conversion efficiency of up to 96% while keeping thermal stress to a minimum in a relatively compact system.

The normal working frequency is 1.15 MHz, which lets small inductors and capacitors be used to make a small solution. The TPS61230A has an extra resistor divider that lets you change the output voltage. When there isn’t much load on the TPS61230A, it instantly switches to PFM mode to get the best efficiency with the lowest standby current.

When the EN pin is set to a logic low, the input is cut off from the load, and the input current drops to less than 1 microampere (A). The device goes into hiccup protection mode when the output is shorted and resumes normally once the short is removed. Protections against things like overvoltage at the output and overheating that force a shutdown are built in as well. The device is offered in a very small (2.50 mm x 2.50 mm x 0.90 mm) VQFN package and works with a minimum of external parts.

TPS61230ARNSR Feature Description

● Startup

When the high-side FET is turned on, the pre-charge phase begins. During this phase, a DC current is used to charge the output capacitor in a straight line. The pre-charge startup step is done when the output voltage is close to the input voltage (usually VOUT = VIN -115 mV). After the output capacitor is set close to the input voltage, the device goes into the boost soft start phase. During this time, a soft start voltage controls the FB pin voltage, and the output voltage grows at a rate that is usually proportional to the soft start voltage’s slew rate. The soft start phase is over when the soft start voltage hits the internal reference voltage. The device goes back to normal operation, and the output voltage stays at the number set by the user.

● Enable and disable

By giving the EN pin a voltage bigger than 1.2 volts, the device is turned on. First, turn on the internal reference and make sure the analog hardware is stable. Once the starting process has begun, the output voltage slowly goes up. When the EN pin is connected directly to ground, the device turns off. When the TPS61230A is in shutdown mode, the switching and internal control circuits are turned off.

● Under-Voltage Lockout (UVLO)

When the battery is overcharged and the input voltage drops to a dangerous level, an undervoltage lockout circuit goes in to keep the device from breaking. When the under-voltage lockout (UVLO) is turned on by a rise in the VIN, the device starts working. When VIN falls below the UVLO dropping level, the output stage of the converter is turned off.

● Thermal Shutdown

The internal junction temperature, TJ, is measured by a temperature gauge built into the TPS61230A. If the junction temperature goes above the threshold, which is usually 160 °C, the low-side and high-side FETs power down as the device enters thermal shutdown. When the junction temperature drops below the level for thermal shutdown (usually 150 °C), the device starts working again.

TPS61230ARNSR Features

• Works with input voltages between 2.5 V and 4.5 V.
• Range from 2.5 V to 5.5 V.
• 6-A is the most current that can be switched in the valley.
• Switching at a frequency of 1.15 MHz, which is almost always the same.
• PFM operation with a light load
• Only 1.05 ms. is needed for the slow start.
• Real disconnecting of load.
• Protection from shorts in the output.
• Safety from too much voltage.
• Power-down due to heat.

TPS61230ARNSR Application Information

The TPS61230A can take a source voltage between 2.5 V and 4.5 V, and the most current it can send out is 2.4 A. The device changes to PWM mode for moderate to high loads and to PFM mode for low loads.

The TPS61230A converter has a switching frequency of 1.15 MHz, which means that the frequency can change in a controlled way across the range of input voltages when it is working in PWM mode. As the load current drops, the converter changes to PFM mode. This lowers the switching frequency and limits the quiescent current to maintain high efficiency across the whole range of load currents.

Applications

• Power banks and battery backup units
• USB Power Supply
• Tablet PCs.
• Audio power amplifier.
• battery-powered products.

Device Functional Modes

● PWM Mode

The TPS61230ARNSR uses pulse width modulation (PWM) to operate at a nearly constant frequency of 1.15 MHz while handling moderate to high load currents. The reliable and efficient delivery of power makes it suitable for a wide range of applications.

● PFM Mode

The device has a power-saving mode and pulse frequency modulation (PFM) to make it work as well as possible when the load is low. In PFM mode, switching starts when the output voltage goes below a certain level. When the output voltage goes above the PFM level, the device stops switching. The DC output voltage is 1.2% higher in PFM mode than it is in PWM mode.

Power Supply Recommendations

The tool can get power from a voltage source between 2.5 V and 4.5 V. This source of information needs to be closely watched. If the input source is more than a few inches away from the converter, the ceramic bypass capacitors may not be enough. Instead, the converter may need more bulk capacitance. Electrolytic or tantalum capacitors often have a value of 47 F.

Layout

● Layout Guidelines

Layout is very important when making a switching power source, especially for high peak currents and fast switching frequencies. The stability and EMI performance of the regulator could be hurt by poor design. So, the main current path and the power ground tracks should be wide and short. The input capacitor, the output capacitor, and the inductor should all be as close to the IC as possible. Connect the power ground and the control ground to different ground points to cut down on ground noise.

Connect these pins to the GND pin on the IC. All boost converters have a key current path that goes from the switching FET to the synchronous FET to the output capacitors and then back to the switching FET’s ground. Because of this, the output capacitors and the traces that connect them should be on the same layer of the board as the IC and as close as possible to the VOUT and GND pins of the IC.

Conclusion

The TPS61230ARNSR from Texas Instruments is the best choice if you want a power converter that won’t break the bank. It works very well because it can convert power with an efficiency of up to 96%, has a high output current capacity, and lets you change the output voltage.

Its start-up and “soft-start” stages let the voltage rise slowly, and its “enable” and “disable” modes make it easier to use. The device also has important safety features like a lockout for low voltage, a defense against high voltage, and a thermal shutdown.

The TPS61230ARNSR is used in a wide range of battery-powered products and applications, such as portable chargers, USB power supplies, tablet computers, audio power amplifiers, and more. To get the best performance with the least amount of electromagnetic interference, you must pay close attention to the plan’s design Contact ICRFQ, a reputable company, toget the information you need about the TPS61230ARNSR and get this great boost converter for your specific needs.

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