The DCP3603BCMR is a new synchronous step-down converter combining wide input capability and high integration to simplify power designs in industrial 24V bus systems and Internet of Things(IoT) devices. The converter handles input voltages from 3.3V up to 36V and delivers up to 3A output current.
The converter achieves up to 93% efficiency in typical configurations. Designers can choose between low-consumption mode (LCM) for maximum light-load efficiency and low-noise mode (LNM) for constant-frequency operation in EMI-sensitive applications. The DCP3603 operates at a fixed 500kHz or 1MHz switching frequency, allowing the use of small inductors to minimize solution size. An optional frequency dithering feature further reduces electromagnetic interference (EMI) peaks to ease compliance with emission standards.
Minimal external components are needed, only an inductor, two small capacitors, and two resistors, thanks to the DCP3603 internal compensation network and soft-start circuitry. This high level of integration, combined with a peak current mode control scheme, simplifies stability compensation and reduces design effort.
Part supported: DCP3603BCMR
Board part number: STEVAL-3603BC1
STEVAL-3603BC1 evaluation board provides a ready-made 5 V/3 A buck converter solution using the DCP3603 and minimal external parts. It helps engineers quickly evaluate the converter’s performance and jump-start their designs. The board highlights the high efficiency and small footprint achievable with the DCP3603 in applications such as appliances, smart meters, and 24V industrial systems. Using this board, developers can validate the DCP3603’s operation under real-world conditions and accelerate prototyping of their power supply designs.
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