UCD3139ARHAT Texas Instruments In Stock
UCD3139ARHAT is a high-performance digital PWM controller IC for power conversion by Texas Instruments. Key specs: up to 3 independent control loops, 12-bit ADC, PMBus/I2C communication interface in a 32-pin QFN package. From $8.50, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3 independent digital PWM control loops for multi-phase and multi-rail power supply regulation in data center and telecom equipment
- 12-bit ADC with programmable digital compensators enabling precise closed-loop voltage regulation without analog trimming
- PMBus and I2C interface supporting real-time telemetry, fault logging, and output voltage margining in intelligent power systems
Applications
UCD3139ARHAT is designed for high-efficiency digital power supplies in data centers, telecom infrastructure, and enterprise servers where programmable multi-loop control and PMBus telemetry are required. Its 3-channel architecture supports LLC resonant converters, phase-shifted full-bridge topologies, and interleaved PFC stages with coordinated digital compensation. The device is also used in base station power modules and industrial UPS systems demanding real-time monitoring of output voltage, current, and temperature via PMBus at 400 kHz.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many independent PWM control loops does UCD3139ARHAT provide and what topologies does it support?
UCD3139ARHAT provides 3 independent digital PWM control loops, supporting LLC resonant, phase-shifted full-bridge, and interleaved PFC converter topologies. Each loop includes a 12-bit ADC input and programmable digital PID compensator, enabling switching frequencies up to 300 kHz per phase without external analog compensation networks.
How does UCD3139ARHAT's PMBus interface benefit power supply monitoring in a 1U server or data center rack?
UCD3139ARHAT's PMBus interface at 400 kHz allows the host system management controller to read real-time output voltage, output current, and temperature telemetry at 1 ms polling intervals. Fault events such as overcurrent at 150% of rated load or overvoltage above 5% setpoint are logged to internal registers and reported via SMBALERT, enabling predictive maintenance before a full power supply shutdown disrupts the rack.
When is UCD3139ARHAT a better choice than an analog PWM controller for a 3-kW server power supply design?
For a 3 kW server power supply requiring output voltage accuracy better than 0.5% across a -40°C to +85°C range, digital compensation in UCD3139ARHAT eliminates the drift of analog RC networks that shift corner frequency by 10% to 20% over temperature. The PMBus interface also allows factory calibration of the voltage setpoint via firmware rather than trimmer potentiometers, reducing production test time by approximately 3 minutes per unit at high volume.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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