STMicroelectronics Launches Efficient Buck Converter for Smart Meters

2025-03-05 analog

Catania, Wednesday, 5 March 2025.
The DCP3601, a highly integrated buck converter, offers 91% efficiency and operates across a 3.3V to 36V range, supporting smart meters and industrial systems with minimal additional components.

Advanced Integration and Efficiency

The DCP3601’s design emphasizes simplicity and efficiency, requiring only six external components to complete the circuit, including inductor, bootstrap and filter capacitors, and feedback resistors [1][2]. The device achieves peak efficiency of 91% at 600mA with 12V input and 5V output through synchronous rectification and a fixed 1MHz switching frequency [2]. This high-performance converter integrates power switching and compensation functions into a single 3mm x 1.6mm SOT23 6-lead package [1].

Flexible Operating Modes

The converter offers multiple operational modes to suit various application requirements. It features both forced-PWM operation for noise-sensitive applications and pulse-skipping capability for light loads, optimizing power consumption [2]. A standout feature is the extremely low quiescent current of 110µA, complemented by an Enable pin that allows complete shutdown for maximum power savings [3][4]. The device also incorporates frequency dithering technology to minimize electromagnetic interference (EMI) in industrial environments [8].

Market Applications and Availability

Launched in February 2025, the DCP3601 is positioned as a versatile solution for smart meters, domestic appliances, and industrial 24V conversion systems [2]. STMicroelectronics has included this converter in their 10-year longevity program, ensuring long-term component availability and support [6]. For rapid development, designers can access the STEVAL-3601CV1 evaluation board, which comes ready to use with screw terminals and headers [2]. The device is commercially available at $0.48 for orders of 1000 pieces [2].

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buck converter smart meters