TPS62223DDCR

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The Texas Instruments TPS62223DDCR is an integrated synchronous DC-DC converter optimized for mobile platforms, portable equipment, and USB3.0 applications. The device is a step-down, adjustable low-noise power solution capable of delivering up to 3 A of continuous output current at high efficiency and offers a wide input voltage range of 2.7 V to 5.5 V. It also offers low noise operation and high efficiency. This makes it suitable for most battery-powered applications.

Application Field

The wide 2.7 V to 5.5 V input voltage range and 3 A continuous current capability makes the TPS62223DDCR DC-DC converter suitable for many applications. This includes battery operated equipment such as mobile phones, tablets, laptops, wearable electronics, and portable health monit0ors. It is also suitable for USB3.0 applications and high power LED lighting. The TPS62223DDCR is also suitable for networking equipment and other embedded systems.

Working Principle

The TPS62223DDCR is a synchronous step-down DC-DC converter. It operates by using a high frequency, low noise voltage switch, which is modulated using Pulse Width Modulation (PWM). The pulses are fed through an inductor, creating a high frequency ripple current in the secondary winding of the inductor. This current is rectified by a Schottky diode and passed through an output capacitor to the load. The capacitor filters the ripple current, resulting in a low noise, smooth output voltage.

The output voltage is adjustable via an External Voltage Divider Network (EVDN). This is used to set the voltage at the Non-inverting input of the error amplifier. The error amplifier compares the voltage of the output to the voltage of the EVDN and creates an error signal. This signal is then used to modulate the output voltage in order to maintain the desired voltage level.

The TPS62223DDCR can also be used in a Forced PWM mode. In this mode, the output voltage is modulated using an external pulse signal. This signal is compared with the output voltage of the error amplifier and then used to modulate the output voltage in order to maintain a predetermined voltage level.

The TPS62223DDCR converter also features Low-Noise Mode (LNM). This mode reduces the ripple voltage at the output. It achieves this by reducing the duty cycle of the voltage switch, allowing the output voltage to settle in a slower fashion. This eliminates the high frequency noise associated with higher frequency ripple currents.

The TPS62223DDCR is also capable of operating in different power saving modes. These include Burst Mode Control, Forced PWM mode, and LNM. These different modes, when used in combination, can provide high efficiency over a wide range of output voltages.

The TPS62223DDCR has integrated over-scale, over-voltage, and over-temperature protection to protect against any damage caused by over-stressing the device. It also has a thermal shutdown circuit, which will shut down the output if the device gets too hot.

The TPS62223DDCR is a versatile DC-DC converter capable of delivering up to 3 A of continuous current. It is suitable for a wide range of applications and has a wide input voltage range. It offers high efficiency and low noise operation, which makes it suitable for most battery operated applications.

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