TPS562201DDCR

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The TPS562201DDCR is an adjustable step down switching DC-DC regulator from Texas Instruments that works with input voltages from 4V to 6V range and can deliver up to 1.5A of output load current. It is an integrated buck regulator designed for point of load (POL) supplies in personal communication, computing, gaming and industrial systems. The TPS562201DDCR\'s integrated high-side MOSFET and low-side MOSFET are used to reduce external component count while delivering high efficiency operation with low RDS(on). The TPS562201DDCR\'s constant on-time control architecture and integrated voltage detection improves system stability and line transient response. The TPS562201DDCR also features an adjustable current limit, adjustable soft-start, and over-temperature protection.

Application Field

The TPS562201DDCR is specifically designed for use in converters that require high output current and low quiescent current consumption. It is ideal for applications including point of load supplies in communication, computing, gaming and industrial systems, which require precise current limit control, fast load transient response, excellence power efficiency and high power density. Specifically, the TPS562201DDCR is designed for applications that require outputs as low as 0 V and as high as 6 V.

Working Principle

The TPS562201DDCR is an adjustable switching DC-DC regulator which works on the principle of constant-on time control architecture. The regulator senses the external output voltage and compares with the set programmable output voltage. To adjust the output voltage, an external resistor divider is required at the output to select the desired output voltage. When the detect voltage exceed the output voltage, a logic signal is generated and it starts to operate in off cycle by turning off the high side MOSFET. In off-cycle, the inductor current begins to ramp down and the voltage compensator begin to monitor the current through the current limit comparator.Once the current reaches the selected threshold it turn on the high side MOSFET again starting the on cycle.

The TPS562201DDCR provides adjustable current limit and adjustable soft-start for easy implementation. It also provides over-temperature protection that helps maintain the system without occurrence of chip overloads. The TPS562201DDCR also incorporates voltage detection which improves system stability and line transient response.

Conclusion

TPS562201DDCR is a highly integrated step down switching DC-DC regulator designed for point of load applications in communication, computing, gaming and industrial systems. It offers adjustable current limit and adjustable soft-start and utilizes constant-on time control architecture with integrated voltage detection for improved system stability and line transient response. It also has over-temperature protection to prevent the chip from overload.

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