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UCD3138128_15 Datasheet, PDF (1/80 Pages) Texas Instruments – UCD3138x Highly-Integrated Digital Controller For Isolated Power | |||
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UCD3138128, UCD3138A64
SLUSBZ8A â JUNE 2014 â REVISED SEPTEMBER 2014
UCD3138x Highly-Integrated Digital Controller For Isolated Power
1 Features
â¢1 64 kB and 128 kB Program Flash Derivative of
UCD3138 Family
â 2-32 kB or 4-32 kB Program Flash Memory
Banks
â Supports Execution From 1 Bank, While
Programming Another
â Capability to Update Firmware Without
Shutting Down the Power Supply
â Additional Communication Ports Compared to
the UCD3138 (+1 SPI, +1 I2C)
â Boot Flash Based Dual Memory Image
Support for âOn the Flyâ Firmware Updates
⢠Digital Control of up to 3 Independent Feedback
Loops
â Dedicated PID Based Hardware
â 2-pole/2-zero Configurable, Non-Linear Control
⢠Up to 16 MSPS Error A/D Converter (EADC)
â Configurable Resolution (min: 1mV/LSB)
â Up to 8x Oversampling and Adaptive Sample
Positioning
â Hardware Based Averaging (up to 8x)
â 14 bit Effective Reference DAC
⢠Up to 8 High Resolution Digital Pulse Width
Modulated (DPWM) Outputs
â 250 ps Pulse Width Resolution
â 4 ns Frequency and Phase Resolution
â Adjustable Phase Shift and Dead-bands
â Cycle-by-Cycle Duty Cycle Matching
â Up to 2 MHz Switching Frequency
⢠Configurable Trailing/Leading/Triangular
Modulation
⢠RTC support
⢠Configurable Feedback Control
â Voltage, Average Current and Peak Current
Mode Control
â Constant Current, Constant Power
⢠Configurable FM, Phase Shift Modulation and
PWM
⢠Fast, Automatic and Smooth Mode Switching
â Frequency Modulation and PWM
â Phase Shift Modulation and PWM
⢠High Efficiency and Light Load Management
â Burst Mode & Ideal Diode Emulation
â Synchronous Rectifier Soft On/Off
â Low IC Standby Power
⢠Primary Side Voltage Sensing
⢠Current Share (Average & Master/Slave)
⢠Feature Rich Fault Protection Options
â 7 Analog / 4 Digital Comparators,
â Cycle-by-Cycle Current Limiting
â Programmable Blanking Time and Fault
Counting
â External Fault Inputs
⢠Synchronization of DPWM Waveforms Between
Multiple UCD3138x Devices
⢠15 channel, 12 bit, 267 ksps General Purpose
ADC
⢠Internal Temperature Sensor
⢠Fully Programmable High-Performance 31.25
MHz, 32-bit ARM7TDMI-S Processor
â 64 kB Program Flash (2-32 kB Banks)
â 2 kB Data Flash with ECC
â 8 kB Data RAM
â 4 kB Boot ROM Enables Firmware Boot-Load
⢠Communication Peripherals,
â 2 - I2C/PMBus interfaces
â 2 - UARTs, 1 - SPI
⢠Timer Capture with Selectable Input Pins
⢠80-pin QFP Package
⢠Operating Temperature: â40°C to 125°C
2 Applications
⢠Power Supplies and Telecom Rectifiers
⢠Power Factor Correction
⢠Isolated DC-DC Modules
⢠Phase Shifted Full Bridge with Peak Current Mode
Control, LLC, HSFB, Forward, etc.
Typical Applications and Tools
UCD3138A64
UCD3138128
Best in Class Firmware
Development Tools
Advanced Configuration &
Debug Tools
Advanced Topology Control
VIN
Q1
Q3
Transformer
LR
LK
VIN
Q1
Q2
SR2
n2
LM n1
n2
Q3
Q4
SR1
Q2
L0
C0
LM
CR
CO
Q4
esr
+ Forward, Flyback,
Half-bridge, etc...
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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