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Texas Instruments UCD3020RGZT
- Part No.:
- UCD3020RGZT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
UCD3020RGZT.pdf
- Description:
- IC DGTL PWR CTRLR 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,480
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Product details
Overview
UCD3020RGZT from Texas Instruments is a digital power controller IC implementing dual high-resolution digital PWM control loops for isolated and non-isolated DC-DC topologies. It features two 250-ps resolution DPWM outputs per loop, 31.25-MHz ARM7 CPU, 32-KB program flash with ECC, 2-KB data flash, and dedicated error ADCs with 1-mV sense resolution - deployed in telecom rectifiers and server VRMs.
For engineers reviewing the UCD3020RGZT datasheet, UCD3020RGZT pinout, UCD3020RGZT application, or UCD3020RGZT equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for digital power system design and migration.
Technical Context
The UCD3020RGZT integrates two independent Fusion Digital Power™ peripherals (FDPP), each comprising a dedicated error ADC, three-pole/three-zero digital compensator, and dual DPWM outputs. Its ARM7 core executes real-time control algorithms, configures peripherals, and manages PMBus/SCI/SPI communications.
It supports voltage-mode, average-current-mode, and resonant-mode control across topologies including phase-shifted full-bridge and LLC resonant converters. Synchronization of DPWM waveforms between multiple UCD30xx devices is enabled via SYNC_IN/SYNC_OUT pins on the RGZ package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DPWM resolution | 250-ps pulse-width resolution enables precise duty-cycle control for high-frequency switching up to 2 MHz. |
| Feedback loops | Two independent high-speed feedback loops support dual-output or multiphase regulation with dedicated EADCs. |
| CPU core | 31.25-MHz 32-bit ARM7 RISC processor executes real-time control law, communication stack, and fault management. |
| Memory | 32-KB program flash + 2-KB data flash (both with ECC) and 4-KB RAM ensure robust firmware execution and parameter storage. |
| ADC capability | 12-bit, 200-ksps general-purpose ADC with 9 channels plus two dedicated 1-mV-resolution error ADCs per loop. |
| Operating range | –40°C to 125°C ambient temperature rating supports industrial and telecom power supply deployment. |
| Package | 48-pin QFN (RGZ), 7 mm × 7 mm, thermally enhanced with exposed thermal pad for efficient heat dissipation. |
Pinout & Package
UCD3020RGZT uses a 48-pin QFN (RGZ) package with 7 mm × 7 mm footprint and exposed thermal pad. Pin functions are multiplexed across DPWM, fault inputs, SCI, PMBus, and timer resources.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GPIO_00/DPWM-1A | Digital PWM output A, Loop 1 | High-resolution (250-ps) PWM channel for primary switch control in first regulated loop. |
| GPIO_01/DPWM-1B | Digital PWM output B, Loop 1 | Complementary DPWM output with adjustable dead-band for synchronous rectification or half-bridge drive. |
| EAP1 / EAN1 | Error ADC input, Loop 1 | Differential analog input pair for precision voltage/current feedback sensing with 1-mV resolution. |
| GPIO_02/DPWM-2A & GPIO_03/DPWM-2B | Digital PWM outputs, Loop 2 | Second independent DPWM pair supporting dual-output or interleaved phase control. |
| GPIO_08/FAULT-1A & GPIO_09/FAULT-1B | External fault inputs, Loop 1 | Asymmetric fault detection inputs enabling fast shutdown on overcurrent or overvoltage events. |
| PMBUS-CLK / PMBUS-DATA | PMBus interface | Standardized two-wire interface for telemetry readback, configuration, and fault logging in compliant systems. |
| RESET | Active-low reset input | Hardware-initiated device reset; synchronized with internal POR/BOD for deterministic startup behavior. |
| V33FB | Linear regulator feedback | Monitors internal 3.3-V LDO output to maintain stable core and I/O rail under load transients. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable control modes | Voltage-mode, average-current-mode, and resonant-mode control selectable per loop for topology flexibility. |
| Dual FDPP hardware accelerators | Each loop includes dedicated 3P3Z digital compensator and error ADC - offloads CPU and ensures deterministic loop timing. |
| Adjustable DPWM parameters | Programmable phase shift, dead-band, polarity, and pulse width enable fine-tuned gate-drive timing for efficiency optimization. |
| Integrated protection suite | Four high-speed analog comparators, 12-bit ADC-based fault detection, and programmable fault inputs provide layered safety coverage. |
| Multi-protocol communication | PMBus, SCI (UART), and SPI interfaces allow integration into diverse host ecosystems without external protocol translators. |
Applications
| Telecom Rectifier Module | Server Voltage Regulator Module (VRM) |
|---|---|
|
Use Scenario: High-efficiency 48-V to 12-V conversion in distributed power architecture for 5G base station RF units. IC Role / Device Role / Timing Role: Dual-loop digital controller managing interleaved LLC resonant stage and post-regulation buck stage. Use Value: 250-ps DPWM resolution enables precise zero-voltage switching timing control, reducing conduction losses by >3% vs. analog counterparts. |
Use Scenario: Multiphase 48-V to 0.8-V conversion for AI accelerator cards requiring dynamic current slew rates >1000 A/μs. IC Role / Device Role / Timing Role: Master controller coordinating four-phase buck regulation with current balancing via adjustable DPWM phase shift. Use Value: Dedicated EADCs with 1-mV resolution deliver accurate per-phase current monitoring, enabling <±1.5% current imbalance across phases. |
| Industrial AC-DC Power Supply | Medical Imaging Power System |
|
Use Scenario: 3-kW PFC + LLC combo supply for factory automation PLCs requiring EN 61000-3-2 compliance and wide input range. IC Role / Device Role / Timing Role: Configured in average-current-mode for boost PFC front-end and resonant-mode for isolated LLC secondary. Use Value: Single-chip dual-loop control eliminates discrete compensator components and reduces BOM count by 12+ parts versus analog solution. |
Use Scenario: Low-noise, tightly regulated ±15-V and 5-V supplies for CT scanner detector bias and FPGA logic rails. IC Role / Device Role / Timing Role: Dual-loop controller regulating isolated flyback outputs with adaptive compensation for load-dependent stability. Use Value: On-chip 3P3Z compensator coefficients programmable in real time allow dynamic loop tuning during imaging sequence transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCD3028RHAT | 40-pin QFN; only two DPWM pairs but identical dual-loop FDPP architecture and ARM7 core. | Limited GPIO count and no SYNC_IN/SYNC_OUT - unsuitable for multi-device synchronization in modular PSUs. | Select when board space is constrained and inter-device sync is unnecessary; same firmware compatibility. |
| UCD3040RGCT | 64-pin QFN; four independent FDPP loops, eight DPWM outputs, 15-channel ADC, and JTAG debug support. | Supports quad-output or 4-phase designs; higher pin count enables more analog monitoring and fault inputs. | Choose for complex multi-rail systems requiring >2 regulated outputs or advanced telemetry and debug access. |
Compared with UCD3020RGZT, UCD3028RHAT offers identical control capability in a smaller package but sacrifices synchronization and GPIO flexibility, while UCD3040RGCT extends scalability to four loops at the cost of larger footprint and higher complexity.
Availability
UCD3020RGZT is available at Aetrix Electronics and suitable for telecom rectifiers, server VRMs, and industrial AC-DC power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for UCD3020RGZT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with decades of power conversion IP leadership.
The UCD30xx product line delivers single-chip digital power controllers targeting high-frequency, high-efficiency isolated and non-isolated DC-DC conversion in telecom, computing, and industrial infrastructure.
FAQ
What is the maximum DPWM switching frequency supported by the UCD3020RGZT?
The UCD3020RGZT supports DPWM switching frequencies up to 2 MHz. This capability enables operation in high-frequency resonant topologies like LLC and phase-shifted full-bridge, reducing magnetics size and improving transient response. The 4-ns DPWM frequency resolution ensures precise frequency tuning across the entire range, critical for ZVS optimization in resonant converters.
Does the UCD3020RGZT include integrated memory with error correction?
Yes, the UCD3020RGZT includes 32-KB of program flash memory and 2-KB of data flash memory, both implemented with error correction code (ECC). This ECC protection prevents silent data corruption in field-deployed power systems, ensuring reliable firmware execution and parameter retention over extended operating life and temperature cycling.
How many independent digital control loops does the UCD3020RGZT implement?
The UCD3020RGZT implements two independent digital control loops, each based on Texas Instruments' Fusion Digital Power™ peripheral (FDPP). Each loop includes a dedicated error ADC with 1-mV resolution, a configurable three-pole/three-zero digital compensator, and two high-resolution DPWM outputs - enabling true dual-output or interleaved multiphase control without CPU intervention.
Which communication interfaces are available on the UCD3020RGZT?
The UCD3020RGZT provides PMBus, SCI (UART), and SPI interfaces. PMBus enables standardized telemetry readback and configuration in power-supply management systems; SCI supports host MCU communication with minimal pin count; SPI allows high-speed firmware updates or auxiliary sensor interfacing. All interfaces operate independently and can be used concurrently.
What package type and thermal characteristics define the UCD3020RGZT?
The UCD3020RGZT is housed in a 48-pin QFN (RGZ) package measuring 7 mm × 7 mm with an exposed thermal pad. This thermally enhanced construction supports junction-to-board thermal resistance (θJB) of 12.5°C/W, enabling reliable operation at full load in ambient temperatures up to 125°C when properly mounted on a 4-layer PCB with adequate copper pour and thermal vias under the pad.
UCD3020RGZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Fusion Digital Power™
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Special Purpose
- Current - Supply:
- 60mA
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
UCD3020RGZT FAQ
1.How can I place an order for UCD3020RGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCD3020RGZT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for UCD3020RGZT reliable?
The price and inventory of UCD3020RGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCD3020RGZT is usually 5 days.
3.What payment methods are accepted for UCD3020RGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCD3020RGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCD3020RGZT?
UCD3020RGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCD3020RGZT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for UCD3020RGZT?
For technical support, including UCD3020RGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCD3020RGZT requirements.
6.How does Aetrix verify that UCD3020RGZT is sourced from the original manufacturer or authorized distributors?
All UCD3020RGZT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UCD3020RGZT meets industry standards.
7.What is the process for return or replacement of UCD3020RGZT?
All UCD3020RGZT units undergo pre-shipment inspection (PSI). If there is an issue with UCD3020RGZT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The UCD3020RGZT part is unused and in its original packaging.
Return procedure for UCD3020RGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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