UCD3138ARJAT

Furthermore, specific power management peripherals have been added to ensure high efficiency, increased power density, reliability, and low overall system cost. These include features like synchronous rectification, constant current control, ideal diode emulation, and high-resolution current sharing, among others. The UCD3138A supports a wide array of control schemes and topologies, making it a versatile solution for various power conversion needs. For even greater improvements, the UCD3139A offers enhanced functionality over its predecessor, the UCD3138A, making it an even more compelling choice for digital power control applications

Key Features

• 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, Automatic, and Smooth Mode Switching
  • Frequency Modulation and PWM
  • Phase-Shift Modulation and PWM
  • Frequency Modulation and Phase-Shift Modulation
• High Efficiency and Light Load Management
  • Burst Mode
  • Ideal Diode Emulation
  • Synchronous Rectifier Soft On/Off
  • Low IC Standby Power
• Primary Side Voltage Sensing
• Copper Trace Current Sensing
• Flux and Phase Current Balancing
• Current Share Bus Support
  • Average or Master and Slave
• Feature Rich Fault Protection Options
  • 7 High-Speed Analog Comparators
  • Cycle-by-Cycle Current Limiting
  • Programmable Fault
  • External Fault Capability
  • 10 Digital Comparators
  • Programmable Blanking Time
• Synchronization of DPWM Waveforms Between Multiple UCD3138A devices
• 14-Channel, 12-Bit, 267-ksps General-Purpose ADC
  • Programmable Averaging Filters
  • Dual Sample and Hold
• Internal Temperature Sensor
• Fully Programmable High-Performance 31.25-MHz, 32-Bit ARM7TDMI-S Processor
  • 32 KB of Program Flash
  • 2 KB of Data Flash with ECC
  • 4 KB of Data RAM
  • Firmware Boot-Load in the Field via PMBus or UART
• Communication Peripherals
  • PMBus
  • 1 UART
• UART Auto-baud Rate Adjustment
• Timer Capture with Selectable Input Pins
• Up to 5 Additional General Purpose Timers
• Built In Watchdog: BOD and POR
• 64-Pin QFN and 40-Pin QFN Package
• Operating Temperature: –40°C to +125°C
• Debug Interface
  • Code Composer Studio with JTAG Interface
  • Fusion Digital Power Designer GUI Support