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Infineon introduces new synchronous buck regulators


12A and 20A devices use fast constant on-time (COT) control scheme to optimise performance

Infineon has announced the TDA388xx family, targeting the server, AI, datacom, telecom, and storage markets. The 12 A and 20 A synchronous buck regulators use a fast constant on-time (COT) control scheme to optimise performance.

According to the company, this approach ensures rapid transient response, minimises passive component count, and reduces board space. They are versatile and are designed to operate over a wide input voltage range from 4.0 V to 16 V. An external bias supply further extends the application range in various DC-DC scenarios. Infineon’s introduction of these regulators represents a significant leap in power system efficiency and compactness.

The TDA388xx family of four buck regulators (TDA38812, TDA38813, TDA38825, and TDA38826) features internal compensation, which improves ease of use and reduces the need for external components. This family also includes selectable switching frequencies and a soft-start functionality.

In addition, the regulators offer a programmable current limit for precise control and support fixed frequency continuous conduction mode (FCCM) and discontinuous conduction mode (DCM). Voltage tracking is enabled through an external reference input.

Built-in protection include pre-bias startup and thermally compensated current limiting. Overvoltage protection (OVP) and undervoltage protection (UVP) are also built in. Additionally, a thermal shutdown is included for added safety. The series is housed in a ROHS-compliant QFN-21 package. It operates effectively over a temperature range of -40 to 125°C.

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