TPS61043DRBT

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The popular LED driver chip TPS61043DRBT, which falls under PMIC – LED Drivers category, finds application for several LED applications. The chip is gaining popularity as it has smaller form factor and offers superior performance. This article discusses the application field and working principle of the TPS61043DRBT.

The converter chip has a wide application field as it can be used as a battery charger, isolated dc-dc converter, isolated ac-dc converter, isolated battery charger, and dc-ac converter. Some of the applications which use the TPS61043DRBT chip include automotive and industrial applications, medical and portable electronics, lighting, and HVAC.

The working principle of the converter chip is based on a recirculation current loop. The chip comprises of two resistors, one for regulating the voltage of the output and the other for adjusting the current of the output. The output voltage is adjusted using the Diodes D1 and D2 which forms a recirculation current loop. The current flow through the recirculation loop is proportional to the applied voltage.

The resistance of the resistor R1 is less than the resistance of R2 and this causes an output voltage to be generated. The output voltage is then fed to the gate of the MOSFET which is used to adjust the current of the output. The MOSFET with its gate connected to the output voltage adjusts the current, thus adjusting the output current also. The output current of the TPS61043DRBT chip can be adjusted by changing the resistance of R2.

The chip also contains some other components such as transistors, capacitors, diodes, and resistors which are used for protection and for enabling the switching power supply. The TG pin is connected to the internal temperature sensing circuit and this sensing circuit is used to control the power supply. It also protects the chip from over-temperature by turning off the power device if the temperature reaches a certain point.

The TPS61043DRBT chip also offers a wide voltage and current range. The chip is available in different versions with different voltage and current ranges. The voltage range for the chip is from 1.2V to 12V and the output current range is from 10mA to 1A. The chip is capable of providing a maximum power of 14W.

The overall design of the TPS61043DRBT chip is quite simple and the chip works reliably in various environmental conditions. The chip also offers a high degree of efficiency and a wide range of protection features. It is easy to operate and offers an excellent solution for LED applications. Its wide voltage and current range makes it ideal for various applications and it is increasingly being used in automotive, industrial, medical and portable electronics, lighting, and HVAC applications.

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