SLUSC66E March   2015  – February 2017 UCD3138A

PRODUCTION DATA.  

  1. 1 Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2 Device Comparison
    1. 2.1 Product Selection Matrix
  3. 3 Pin Configuration and Functions
    1. 3.1 UCD3138A RGC Package
    2. 3.2 UCD3138A RMH Package
    3. 3.3 UCD3138A RJA Package
  4. 4 Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 ESD Ratings
    3. 4.3 Recommended Operating Conditions
    4. 4.4 Thermal Information
    5. 4.5 Electrical Characteristics
    6. 4.6 PMBus/SMBus/I2C Timing
    7. 4.7 Peripherals
      1. 4.7.1 Digital Power Peripherals (DPPs)
        1. 4.7.1.1 Front End
        2. 4.7.1.2 DPWM Module
        3. 4.7.1.3 DPWM Events
        4. 4.7.1.4 High Resolution DPWM
        5. 4.7.1.5 Oversampling
        6. 4.7.1.6 DPWM Interrupt Generation
        7. 4.7.1.7 DPWM Interrupt Scaling/Range
        8. 4.7.1.8 DPWM Synchronization
        9. 4.7.1.9 Synchronous Rectifier Dead-Time Optimization Peripheral
    8. 4.8 Typical Temperature Characteristics
  5. 5 Parametric Measurements Information
    1. 5.1 Power-On Reset (POR) and Brown-Out Reset (BOR)
  6. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 ARM Processor
    3. 6.3 Memory
      1. 6.3.1 CPU Memory Map and interruptions
      2. 6.3.2 Boot ROM
      3. 6.3.3 Customer Boot Program
      4. 6.3.4 Flash Management
    4. 6.4 System Module
      1. 6.4.1 Address Decoder (DEC)
      2. 6.4.2 Memory Management Controller (MMC)
      3. 6.4.3 System Management (SYS)
      4. 6.4.4 Central Interrupt Module (CIM)
    5. 6.5 Feature Description
      1. 6.5.1  Sync FET Ramp and IDE Calculation
      2. 6.5.2  Automatic Mode Switching
        1. 6.5.2.1 Phase Shifted Full Bridge Example
        2. 6.5.2.2 LLC Example
        3. 6.5.2.3 Mechanism for Automatic Mode Switching
      3. 6.5.3  DPWMC, Edge Generation, IntraMux
      4. 6.5.4  Filter
        1. 6.5.4.1 Loop Multiplexer
        2. 6.5.4.2 Fault Multiplexer
      5. 6.5.5  Communication Ports
        1. 6.5.5.1 SCI (UART) Serial Communication Interface
        2. 6.5.5.2 PMBus Interfacte
        3. 6.5.5.3 General Purpose ADC12
        4. 6.5.5.4 Timers
          1. 6.5.5.4.1 24-bit PWM Timer
          2. 6.5.5.4.2 16-Bit PWM Timers
          3. 6.5.5.4.3 Watchdog Timer
      6. 6.5.6  Miscellaneous Analog
      7. 6.5.7  Package ID Information
      8. 6.5.8  Brownout
      9. 6.5.9  Global I/O
      10. 6.5.10 Temperature Sensor Control
      11. 6.5.11 I/O Mux Control
      12. 6.5.12 Current Sharing Control
      13. 6.5.13 Temperature Reference
  7. 7 Device Functional Modes
    1. 7.1 Normal Mode
    2. 7.2 DPWM Multiple Output Mode
    3. 7.3 DPWM Resonant Mode
    4. 7.4 Triangular Mode
    5. 7.5 Leading Edge Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 PCMC (Peak Current Mode Control) PSFB (Phase-Shifted Full Bridge) Hardware Configuration Overview
        2. 8.2.2.2 DPWM Initialization for PSFB
      3. 8.2.3 Fixed Signals to Bridge
      4. 8.2.4 Dynamic Signals to Bridge
      5. 8.2.5 System Initialization for PCM
        1. 8.2.5.1 Use of Front Ends and Filters in PSFB
        2. 8.2.5.2 Peak Current Detection
        3. 8.2.5.3 Peak Current Mode (PCM)
      6. 8.2.6 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Power Supply Decoupling and Bulk Capacitors
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 Tools and Documentation
    2. 11.2 Documentation Support
      1. 11.2.1 References
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical Packaging and Orderable Information
    1. 12.1 Packaging Information

Package Options

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

2 Device Comparison

2.1 Product Selection Matrix

FEATURE UCD3138A 64 PIN
(RGC)		 UCD3138A 40 PIN
(RMH)		 UCD3138A 40 PIN
(RJA)
ARM7TDMI-S core processor 31.25 MHz 31.25 MHz 31.25 MHz
High resolution DPWM outputs (250-ps resolution) 8 8 8
Number of high speed independent feedback loops (number of regulated output voltages) 3 3 3
12-bit, 267-ksps, general-purpose ADC channels 14 7 7
Digital comparators at ADC outputs 4 4 4
Flash memory (program) 32 kB 32 kB 32 kB
Flash memory (data) 2 kB 2 kB 2 kB
Flash security √ √ √
RAM 4 kB 4 kB 4 kB
DPWM switching frequency up to 2 MHz up to 2 MHz up to 2 MHz
Programmable fault inputs 4 1 + 2 1 + 2
High speed analog comparators with cycle-by-cycle current limiting 7(1) 6(1) 6(1)
UART (SCI) 2 1 1
PMBus √ √ √
Timers 4 (16 bit) and
1 (24 bit)		 4 (16 bit) and
1 (24 bit)		 4 (16 bit) and
1 (24 bit)
Timer PWM outputs 2 1 1
Timer capture inputs 1 1 1
Watchdog √ √ √
On-chip oscillator √ √ √
Power-on reset and brown-out reset √ √ √
Package offering 64 Pin VQFN
(9 mm × 9 mm)		 40 Pin WQFN
(6 mm × 6 mm)		 40 Pin WQFN
(6 mm × 6 mm)
Sync IN and sync OUT functions √ √ √
Total GPIO (includes all pins with multiplexed functions such as, DPWM, fault inputs, SCI, and so forth) 30 18 18
External interruptions 1 0 0
(1) To facilitate simple OVP and UVP connections both comparators B and C are connected to the AD03 pin.