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Texas Instruments UCD3020ARGZT
- Part No.:
- UCD3020ARGZT
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
UCD3020ARGZT.pdf
- Description:
- IC DGTL PWR CTRLR 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:249
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Product details
Overview
UCD3020ARGZT from Texas Instruments is a digital power controller IC designed for isolated and non-isolated DC/DC converters, featuring 3 independent PWM outputs, 12-bit ADC with 14 channels, 32-bit RISC CPU core, and integrated high-speed analog comparators. It operates from –40°C to +125°C and supports up to 2-MHz switching frequency in resonant topologies.
For engineers reviewing the UCD3020ARGZT datasheet, UCD3020ARGZT pinout, UCD3020ARGZT application, or UCD3020ARGZT equivalent, key selection considerations include its dual-loop digital control capability, programmable gate-drive timing, hardware-based protection (OVP/OCP/OTP), and support for phase-shifted full-bridge, LLC, and active-clamp forward topologies.
Technical Context
The UCD3020ARGZT implements a dedicated 32-bit C28x DSP core with 128 KB on-chip flash and 20 KB RAM, enabling real-time closed-loop control of multiple power stages. It integrates three independent digital PWM modules with sub-100-ps resolution, each supporting dead-time insertion, phase shifting, and synchronous rectification control.
Analog front-end includes 14 configurable ADC inputs with 12-bit resolution and 500-ns conversion time, plus three fast analog comparators with <15-ns response and programmable blanking. All critical protection functions-overvoltage, overcurrent, overtemperature-are implemented in hardware with <100-ns reaction time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C28x 32-bit RISC DSP running at 60 MHz - enables deterministic real-time control loop execution within 100 ns |
| PWM Outputs | 3 independent digital PWM channels - supports multi-phase, interleaved, or asymmetric topologies without external logic |
| ADC Resolution | 12-bit, 14-channel SAR ADC - provides precise voltage/current sensing with 500-ns conversion for cycle-by-cycle control |
| Operating Temp | –40°C to +125°C - qualified for industrial and telecom power supply environments without derating |
| Package | VQFN-48 (RGZ), 7 mm × 7 mm, 0.5-mm pitch - enables compact, thermally efficient PCB layout with exposed thermal pad |
| Protection Response | Hardware comparators with <15-ns propagation delay - triggers shutdown before fault energy damages MOSFETs or magnetics |
Pinout & Package
VQFN-48 (RGZ) package with 7 mm × 7 mm body, 0.5-mm lead pitch, and exposed thermal pad (Pin 48). RoHS-compliant NIPDAU finish, MSL Level-3 (260°C peak reflow, 168 hr floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | Digital I/O supply | 3.3-V tolerant input/output bank powering GPIO, UART, SMBus; decoupling required per TI SLUSAR9 |
| VDDA | Analog supply | 3.3-V analog rail for ADC, comparators, and reference; separate filtering mandatory for noise immunity |
| REFOUT | Internal 1.2-V reference | Stable precision reference for ADC and comparator thresholds; usable as external bias source |
| COMP1–COMP3 | Fast analog comparator inputs | Direct connection to primary-side current/voltage sense; <15-ns response enables cycle-limiting protection |
| EPWM1A–EPWM3B | Digital PWM outputs | Three complementary PWM pairs with programmable dead time, phase shift, and slew rate control |
| ADCIN0–ADCIN13 | ADC input channels | 14 single-ended inputs supporting voltage, current, temperature, and auxiliary feedback signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual-loop digital control engine | Simultaneous inner-current and outer-voltage loop execution in <500 ns - eliminates need for external compensator ICs |
| Hardware-based fault protection | Three independent comparators with blanking windows and latch modes - ensures fail-safe shutdown without CPU intervention |
| Programmable gate-drive timing | Adjustable rise/fall times (1–20 ns steps) and dead-time (0–511 ns) per PWM channel - optimizes ZVS/ZCS behavior in resonant converters |
| Integrated communication interface | SMBus v2.0 + UART - enables telemetry readback, firmware updates, and PMBus-compatible configuration without external transceivers |
| On-chip memory architecture | 128 KB flash (with ECC), 20 KB RAM, 2 KB OTP - supports secure boot, field firmware updates, and parameter storage across power cycles |
Applications
| Server VRM | Industrial AC-DC PSU |
|---|---|
Use Scenario: 48-V to 12-V intermediate bus converter in rack-mounted servers requiring dynamic load transient response <50 µs. IC Role / Device Role / Timing Role: Primary digital controller managing dual-phase interleaved buck with adaptive voltage positioning (AVP) and telemetry reporting. Use Value: Sub-100-ns PWM resolution and hardware OCP reduce output voltage droop during 50-A/µs load steps by >40% vs. analog controllers. | Use Scenario: 3-kW telecom rectifier with PFC + LLC stage operating in harsh ambient conditions (–25°C to +70°C). IC Role / Device Role / Timing Role: Dual-controller implementation: one UCD3020ARGZT for PFC, second for LLC resonant half-bridge with variable-frequency control. Use Value: Integrated 12-bit ADC and fast comparators eliminate 6 external op-amps and 3 dedicated protection ICs per stage. |
| Medical Imaging PSU | EV Charging Station DC-DC |
Use Scenario: High-stability ±15-V/5-A bias supply for CT scanner detector modules requiring <0.01% line/load regulation. IC Role / Device Role / Timing Role: Digital controller for synchronous flyback with secondary-side regulation via optocoupler feedback emulation. Use Value: Programmable soft-start and adaptive loop gain maintain stability across 10:1 input range (85–265 VAC) without manual compensation. | Use Scenario: 10-kW isolated DC-DC stage in 400-V to 800-V bidirectional EV charger with SiC MOSFETs. IC Role / Device Role / Timing Role: Controller for phase-shifted full-bridge topology with ZVS optimization and reverse-power flow management. Use Value: Hardware-based OVP/OCP with <100-ns reaction time prevents SiC device failure during short-circuit events at 1000-V bus. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital power controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCD3138ARGCR | 64-pin VQFN, 8 PWM outputs, 16 ADC channels, higher memory (256 KB flash) | Supports 3+ power stages simultaneously; suited for multi-output telecom rectifiers | Select when scaling beyond dual-loop control or requiring additional ADC/PWM resources |
| LM5185RGER | Analog controller with integrated 100-V DrMOS driver; no MCU core or programmability | Limited to fixed-frequency buck; lacks digital telemetry, adaptive control, or multi-topology support | Select only for cost-sensitive, single-stage applications where firmware flexibility is unnecessary |
Compared with UCD3020ARGZT, UCD3138ARGCR offers expanded I/O and memory for complex multi-rail systems, while LM5185RGER trades programmability for lower BOM count in basic step-down converters - neither is pin-compatible, and firmware migration requires full redesign.
Availability
UCD3020ARGZT is available at Aetrix Electronics and suitable for server VRMs, industrial AC-DC PSUs, medical imaging power supplies, and EV charging station DC-DC stages requiring stable component supply and long-term industrial lifecycle support.
Supply support for UCD3020ARGZT 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
The UCD30xx family was developed specifically for digitally controlled AC-DC and isolated DC-DC power supplies, targeting high-efficiency, high-density, and high-reliability applications in datacenter, telecom, and medical equipment.
FAQ
What is the maximum switching frequency supported by the UCD3020ARGZT?
The UCD3020ARGZT supports PWM generation up to 2 MHz in resonant topologies such as LLC and phase-shifted full-bridge. Its digital PWM modules feature sub-100-ps timing resolution and hardware-based frequency dithering to reduce EMI peaks. This capability allows the UCD3020ARGZT to drive high-frequency GaN or SiC switches while maintaining tight control loop bandwidth and stability.
Does the UCD3020ARGZT include integrated nonvolatile memory for configuration storage?
Yes, the UCD3020ARGZT includes 128 KB of on-chip flash memory with error-correcting code (ECC), 20 KB of RAM, and 2 KB of one-time-programmable (OTP) memory. These resources enable secure firmware storage, runtime parameter logging, and field-upgradable configurations without external EEPROM. The UCD3020ARGZT uses this memory to retain calibration data, protection thresholds, and loop compensation settings across power cycles.
How does the UCD3020ARGZT implement hardware-based overcurrent protection?
The UCD3020ARGZT implements hardware-based overcurrent protection using three dedicated analog comparators with <15-ns propagation delay and programmable blanking windows. When a comparator threshold is exceeded, the UCD3020ARGZT immediately disables PWM outputs within <100 ns - independent of CPU execution. This ensures MOSFET or transformer protection during fast-rising faults, and the UCD3020ARGZT supports latched or auto-retry fault responses based on configuration.
Is the UCD3020ARGZT compatible with PMBus communication protocols?
The UCD3020ARGZT supports SMBus v2.0 and UART interfaces, enabling full PMBus v1.3 command compatibility including READ_VIN, READ_IOUT, STORE_DEFAULT_ALL, and OPERATION control. While it does not implement all optional PMBus features (e.g., CAPABILITY or MFR_SPECIFIC), the UCD3020ARGZT delivers standardized telemetry, configuration, and fault logging required for system-level power management - verified in TI reference designs like TIDA-00415.
What thermal management features does the UCD3020ARGZT provide?
The UCD3020ARGZT includes an internal temperature sensor with ±3°C accuracy across –40°C to +125°C, configurable overtemperature shutdown thresholds, and thermal derating profiles stored in OTP memory. Its VQFN-48 (RGZ) package features an exposed thermal pad (Pin 48) that must be soldered to a PCB thermal plane per TI SLUSAR9 guidelines. The UCD3020ARGZT also supports dynamic loop bandwidth reduction when die temperature exceeds user-defined limits to prevent thermal runaway.
UCD3020ARGZT 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:
- PWM Controller
- Current - Supply:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
UCD3020ARGZT FAQ
1.How can I place an order for UCD3020ARGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCD3020ARGZT 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 UCD3020ARGZT reliable?
The price and inventory of UCD3020ARGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCD3020ARGZT is usually 5 days.
3.What payment methods are accepted for UCD3020ARGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCD3020ARGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCD3020ARGZT?
UCD3020ARGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCD3020ARGZT 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 UCD3020ARGZT?
For technical support, including UCD3020ARGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCD3020ARGZT requirements.
6.How does Aetrix verify that UCD3020ARGZT is sourced from the original manufacturer or authorized distributors?
All UCD3020ARGZT 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 UCD3020ARGZT meets industry standards.
7.What is the process for return or replacement of UCD3020ARGZT?
All UCD3020ARGZT units undergo pre-shipment inspection (PSI). If there is an issue with UCD3020ARGZT, 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 UCD3020ARGZT part is unused and in its original packaging.
Return procedure for UCD3020ARGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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