UCD3138A

Product Folder Order Now Technical Documents Tools & Software Support & Community UCD3138A SLUSC66E – MARCH 2015 – REVISED FEBRUARY 2017 UCD3138A Highly-Integrated Digital Controller for Isolated Power 1 Device Overview 1.1 Features 1 Digital Control of up to 3 Independent Feedback Loops – Dedicated PID-Based Hardware – 2-Pole, 2-Zero Configurable – Nonlinear Control Soft-Start and Soft-Stop with and without Prebias Fast Input Voltage Feed Forward Hardware Synchronous Rectifier Dead Time Optimization Peripheral to Use with UCD7138 Synchronous Rectifier Driver Up to 16 MHz Error Analog-to-Digital Converter (EADC) – Configurable Resolution as Small as 1 mV/LSB – Automatic Resolution Selection – Up to 8× Oversampling – Hardware-Based Averaging (up to 8×) – 10-Bit Effective DAC With 4 Bits of Dither – Adaptive Sample Trigger Positioning Up to 8 High-Resolution Digital Pulse Width Modulated (DPWM) Outputs – 250-ps Pulse Width Resolution – 4-ns Frequency and Phase Resolution – Adjustable Phase-Shift Between Outputs – Adjustable Dead-band Between Pairs – Cycle-by-Cycle Duty Cycle Matching – Up to 2-MHz Switching Frequency Configurable PWM Edge Movement – Trailing Modulation – Leading Modulation – Triangular Modulation Configurable Feedback Control – Voltage Mode – Average Current Mode – Peak Current Mode Control – Constant Current – Constant Power Configurable Modulation Methods – Frequency Modulation – Phase-Shift Modulation – Pulse Width Modulation Fast,...