UCD3138RMHR

The UCD3138RMHR from Texas Instruments is a highly integrated digital controller designed for isolated power applications. This device features digital control of up to 3 independent feedback loops and provides up to 8 high-resolution Digital Pulse Width Modulated (DPWM) outputs with 250-ps pulse width resolution.

Key electrical specifications include an operating voltage range of 3V to 3.6V and a current rating of 100 mA. The controller incorporates a 16 MHz Error Analog-to-Digital Converter (EADC) with configurable resolution as low as 1mV/LSB and a 14-bit effective Digital-to-Analog Converter (DAC). It supports various control modes such as Voltage Mode, Average Current Mode, and Peak Current Mode Control, along with configurable modulation methods like Frequency Modulation and Phase Shift Modulation.

Packaged in a 40-WQFN (6x6 mm) surface-mount configuration, the UCD3138RMHR operates within a temperature range of -40°C to 125°C. Its design facilitates high efficiency and light load management through features like Burst Mode and Ideal Diode Emulation. The device also includes robust fault protection options with 7 high-speed analog comparators and cycle-by-cycle current limiting.

This controller is suitable for applications requiring precise digital power control, including AC/DC switching regulators and DC/DC power modules. Its comprehensive feature set makes it a versatile component for demanding power supply designs.