SLUSBZ8B June   2014  – February 2017 UCD3138128 , UCD3138A64

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Revision History
  4. 4 Description
  5. 5  Product Family Comparison
  6. 6 Product Feature Overview
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  Handling Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information
    5. 8.5  Electrical Characteristics
    6. 8.6  Timing Characteristics
    7. 8.7  PMBUS/SMBUS/IC Timing2
    8. 8.8  Timing Requirements
    9. 8.9  Power On Reset (POR) / Brown Out Detect (BOD)
    10. 8.10 Typical Clock Gating Power Savings
    11. 8.11 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
      1. 9.1.1 ARM Processor
      2. 9.1.2 Memory
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  System Module
        1. 9.3.1.1 Address Decoder (DEC)
        2. 9.3.1.2 Memory Management Controller (MMC)
        3. 9.3.1.3 System Management (SYS)
        4. 9.3.1.4 Central Interrupt Module (CIM)
      2. 9.3.2  Peripherals
        1. 9.3.2.1 Digital Power Peripherals
          1. 9.3.2.1.1 Front End
          2. 9.3.2.1.2 DPWM Module
          3. 9.3.2.1.3 DPWM Events
          4. 9.3.2.1.4 High Resolution DPWM
          5. 9.3.2.1.5 Over Sampling
          6. 9.3.2.1.6 DPWM Interrupt Generation
          7. 9.3.2.1.7 DPWM Interrupt Scaling/Range
      3. 9.3.3  Automatic Mode Switching
        1. 9.3.3.1 Phase Shifted Full Bridge Example
        2. 9.3.3.2 LLC Example
        3. 9.3.3.3 Mechanism For Automatic Mode Switching
      4. 9.3.4  DPWMC, Edge Generation, Intramux
      5. 9.3.5  Filter
        1. 9.3.5.1 Loop Multiplexer
        2. 9.3.5.2 Fault Multiplexer
      6. 9.3.6  Communication Ports
        1. 9.3.6.1 SCI (UART) Serial Communication Interface
        2. 9.3.6.2 PMBUS/I2C
        3. 9.3.6.3 SPI
      7. 9.3.7  Real Time Clock
      8. 9.3.8  Timers
        1. 9.3.8.1 24-Bit Timer
        2. 9.3.8.2 16-Bit PWM Timers
        3. 9.3.8.3 Watchdog Timer
      9. 9.3.9  General Purpose ADC12
      10. 9.3.10 Miscellaneous Analog
      11. 9.3.11 Brownout
      12. 9.3.12 Global I/O
      13. 9.3.13 Temperature Sensor Control
      14. 9.3.14 I/O Mux Control
      15. 9.3.15 Current Sharing Control
      16. 9.3.16 Temperature Reference
    4. 9.4 Device Functional Modes
      1. 9.4.1 DPWM Modes Of Operation
        1. 9.4.1.1 Normal Mode
        2. 9.4.1.2 Phase Shifting
        3. 9.4.1.3 DPWM Multiple Output Mode
        4. 9.4.1.4 DPWM Resonant Mode
      2. 9.4.2 Triangular Mode
      3. 9.4.3 Leading Edge Mode
    5. 9.5 Register Maps
      1. 9.5.1 CPU Memory Map And Interrupts
        1. 9.5.1.1 Memory Map (After Reset Operation)
        2. 9.5.1.2 Memory Map (Normal Operation)
        3. 9.5.1.3 Memory Map (System And Peripherals Blocks)
      2. 9.5.2 Boot ROM
      3. 9.5.3 Customer Boot Program
      4. 9.5.4 Flash Management
    6. 9.6 Synchronous Rectifier MOSFET Ramp And IDE Calculation
  10. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 PCMC (Peak Current Mode Control) PSFB (Phase Shifted Full Bridge) Hardware Configuration Overview
        2. 10.2.2.2 DPWM Initialization for PSFB
        3. 10.2.2.3 DPWM Synchronization
        4. 10.2.2.4 Fixed Signals to Bridge
        5. 10.2.2.5 Dynamic Signals to Bridge
      3. 10.2.3 System Initialization for PCM
        1. 10.2.3.1 Use of Front Ends and Filters in PSFB
        2. 10.2.3.2 Peak Current Detection
        3. 10.2.3.3 Peak Current Mode (PCM)
      4. 10.2.4 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Device Grounding and Layout Guidelines
    2. 12.2 Layout Examples
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Development Support
    2. 13.2 Documentation Support
      1. 13.2.1 Related Links
      2. 13.2.2 Related Documentation
        1. 13.2.2.1 References
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6 Product Feature Overview

FEATURE UCD3138x 80 PIN
ARM7TDMI-S Core Processor 31.25 MHz
High Resolution DPWM Outputs (250ps Resolution) 8
Number of High Speed Independent Feedback Loops (# Regulated Output Voltages) 3
12-bit, 267ksps, General Purpose ADC Channels 15
Digital Comparators at ADC Outputs 4
Flash Memory (Program) (UCD3138A64) 64 kB
Flash Memory (Program) (UCD3138128) 128 kB
Flash Memory (Data) 2 kB
Flash Security √
RAM 8 kB
DPWM Switching Frequency up to 2 MHz
Programmable Fault Inputs 4
High Speed Analog Comparators with Cycle-by-Cycle Current Limiting 7
UART (SCI) 2
PMBus 1
I2C 1
SPI 1
Timers 4 (16 bit) and 2 (24 bit)
Timer PWM Outputs 4
Timer Capture Inputs 2
Watchdog √
On Chip Oscillator √
Power-On Reset and Brown-Out Detector √
Sync IN and Sync OUT Functions √
Total GPIO (includes all pins with multiplexed functions such as, DPWM, Fault Inputs, SCI, etc.) 43
External Interrupts 1