TPS562208DDCR Integrated Circuits (ICs)

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TPS562208DDCR application field and working principle

The TPS562208DDCR is a non-synchronous step-down DC-DC converter from Texas Instruments, designed for low power and space saving applications. The configuration of the device makes it readily applicable to many different applications and markets. The TPS562208DDCR has a wide range of voltage and current options, making it suitable for applications such as mobile phones, tablets, data cards, wireless LANs, and many others.

The TPS562208DDCR features a slightly different topology than traditional DC-DC converters. It employs an “internal synchronous rectification” technique that allows it to operate efficiently and with minimum switching losses. The internal switching topology consists of two N-channel MOSFETs and two P-channel MOSFETs connected in a totem-pole configuration. The device runs in a synchronous rectification mode when Vin is greater than Vout, as shown in Figure 1.

Figure 1: Internal switch topology of the TPS562208DDCR

When Vin is greater than Vout, the internal low-side switch (N1) is on and works as a low-side opposing switch. This allows the device to reduce the conduction losses by modulating the duty cycle to keep N1 on while the MOSFETs are circuit is actively switching. The low-side switch also ensures that the DC-DC converter operates at high efficiency even when the input voltage is higher than the output voltage.

The TPS562208DDCR also features an integrated voltage supervisor, which monitors the output voltage and regulates the switching frequency accordingly. This ensures that the output voltage remains regulated regardless of changes in the input voltage. The device also features an adjustable current limit and integrated feedback compensation, making it well-suited for applications with tight voltage regulation requirements.

The TPS562208DDCR has a power rating of 8 W and is available in a compact 4 mm × 6 mm VQFN package. It has a wide operating temperature range of -40 °C to +85 °C, making it suitable for a wide range of applications. The device also features a start-up circuit, which allows the converter to start up at any input voltage. The device is also protected against overvoltage and overcurrent conditions, ensuring reliable operation in the harshest conditions.

In summary, the TPS562208DDCR is a high-performance, space-saving DC-DC converter featuring advanced power management capabilities. Its wide voltage and current range, combined with an adjustable current limit and integrated feedback compensation, make it ideal for applications requiring tight voltage regulation. The integrated voltage supervisor and start-up circuit ensure reliable operation and the device’s small size, wide operating temperature range, and robust protection circuits make it well-suited for small, space-constrained applications. The TPS562208DDCR is a perfect fit for many different applications and markets and is sure to become a popular choice for power managers.

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