数字电源控制器 UCD3040 UCD3028 UCD3020 手册

Current-Mode, and Resonant-Mode Control

23 • Digital Control of up to Four Voltage Feedback

• Allows Synchronization of DPWM Waveforms Loops

Between Multiple UCD3040, UCD3020 and

• Up to Eight High-Resolution Digital Pulsewidth

UCD3028 (UCD30xx) Devices

Modulated (DPWM) Outputs for Supporting a

• Adjustable DPWM Pulse Width Enables Wide Range of Offline, Isolated and Non-

Support for Current Balancing in a Multiphase Isolated DC-to-DC Topologies

Application.

– 250-ps DPWM Pulse-Width Resolution

• High-Performance 31.25-MHz, 32-Bit ARM7

– 4-ns DPWM Frequency Resolution

Processor

– Adjustable Phase Shift Between DPWM

• 32-KByte Program Flash and 2-KByte Data

Outputs

Flash Memory With Error Correction Code

– Adjustable Dead Band Between Each

(ECC)

DPWM Pair

• 4-KByte Data RAM

– Active-High or -Low DPWM Polarity

• 4-KByte Boot ROM

– Up to 2-MHz DPWM Switching Frequency

• Communication Peripherals

• Dedicated High-Speed Error Analog-to-Digital

– PMBus

Converter (EADC) for Each Feedback Loop

– UART With Sense Resolution of up to 1 mV

– SPI • On-Chip 10-Bit D and A Converter (DAC) for

Setting EADC Reference Voltage – JTAG (Not Available in the UCD3028)

• Dedicated Hardware Accelerated Digital • Single-Supply Solution: Internal Regulator

Compensators or Control Law Accelerators Controls External Pass Element

(CLA)

• Internal Temperature Sensor

– Three-Pole, Three-Zero Configurable

• Up to Five Additional Timers

Compensator

• Built-In Watchdog, BOD, and POR

– Features Non-Linear Digital Control

• 80-Pin QFP (PFC), 64-Pin QFN (RGC), 48-Pin

– Multiple Programmable Coefficient

QFN (RGZ), and 40-Pin QFN (RHA and RMH)

Registers for Adaptive Digital

Package Offerings

Compensation

• Operating Temperature Range: –40°C to 125°C

• Up to 15-Channel, 12-Bit, 200-ksps, Analog-to-

Digital Converter (ADC) APPLICATIONS

• Multiple Levels of Fault Protection

• Isolated AC-to-DC and DC-to-DC Power

– Four High-Speed Analog Comparators

Supplies

– External Fault Inputs

• Power-Factor Correction

– 12-Bit ADC

• Non-Isolated DC-to-DC Power Supplies