My Inquiry
My Account
Texas Instruments UCD9248PFCR
- Part No.:
- UCD9248PFCR
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 80-TQFP
- Datasheet:
-
UCD9248PFCR.pdf
- Description:
- IC DGTL PWM SYSTEM CTRLR 80TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,553
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UCD9248PFCR from Texas Instruments is a multi-rail, multi-phase synchronous buck digital PWM controller for non-isolated DC/DC power conversion. It controls up to 4 voltage rails and 8 phases, supports switching frequencies up to 2 MHz with 250 ps duty-cycle resolution, delivers up to 1 mV closed-loop regulation resolution, and integrates hardware-accelerated 3-pole/3-zero digital compensation - deployed in FPGA, DSP, and memory power subsystems.
For engineers reviewing the UCD9248PFCR datasheet, UCD9248PFCR pinout, UCD9248PFCR application, or UCD9248PFCR equivalent, this device is selected for high-precision, multi-output server and telecom power management where phase shedding, voltage tracking, and real-time current/temperature balancing are required.
Technical Context
The UCD9248PFCR implements four independent Fusion Power Peripherals (FPP), each with a dedicated error amplifier, 10-bit DAC reference, fast ADC, and programmable 3P/3Z IIR compensator. Each FPP drives up to two DPWM outputs, enabling flexible rail-to-phase mapping across 4 rails and 8 total phases.
It features dual-domain power supplies (V33A analog, V33D digital core, V33DIO I/O), hardware fault detection via analog comparators (15–4 µs latency), and PMBus 1.1 compliance with 10–1000 kHz operation. Real-time monitoring includes 12-bit ADC sampling at 260 ksps, with configurable intervals per rail and phase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Output Rails | 4 independent voltage rails - enables complex multi-voltage systems like CPU + GPU + memory + I/O rails |
| Max Phases Supported | 8 phases - allows high-current output scaling with current/temperature balancing and phase shedding |
| Switching Frequency | 15.26 kHz to 2 MHz - supports high-efficiency, compact magnetics in telecom and server applications |
| Duty-Cycle Resolution | 250 ps - enables fine-grained control for low-duty-cycle, high-step-down converters |
| Closed-Loop Resolution | 1 mV - achieves tight regulation tolerance for sensitive FPGA/DSP core supplies |
| ADC Monitoring Rate | 260 ksps - provides sub-µs fault response for overvoltage (300 µs worst-case) and overcurrent events |
| PMBus Compliance | PMBus 1.1, SMBus 1.1, I²C - enables standardized configuration, telemetry, and fault logging in system-level power management |
Pinout & Package
The UCD9248PFCR is housed in an 80-pin TQFP package (PFC) with exposed thermal pad, rated for –40°C to +125°C operation. Pin functions are validated per TI SLVSA33A datasheet Rev. August 2012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DPWM-1A / DPWM-1B | Digital PWM outputs (rail 1) | Complementary high-resolution PWM signals driving gate drivers for one synchronous buck stage |
| EAP1 / EAN1 | Differential voltage sense inputs (rail 1) | High-impedance (0.5–3 MΩ), low-offset (±5 µA) inputs for precision feedback loop closure |
| CS-1A / CS-1B | Current sense inputs (phase 1) | Analog comparator inputs with 31.25 mV threshold resolution for fast overcurrent protection |
| SRE-1A / SRE-1B | Synchronous rectifier enable (rail 1) | Active-high outputs controlling external MOSFET gate drivers in synchronous rectification topology |
| PMBus_Clock / PMBus_Data | PMBus interface pins | Open-drain, 3.3 V-tolerant I²C-compatible bus supporting 10–1000 kHz for configuration and telemetry |
| V33A / V33D / V33DIO | Separate analog/digital/I/O supplies | Independent 3.3 V domains minimize noise coupling between ADC, logic, and communication circuits |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-accelerated 3P/3Z compensator | Enables stable loop tuning without external components or firmware intervention - reduces design iteration time |
| Voltage tracking & sequencing | Supports precise power-up/down timing across multiple rails (e.g., core before I/O) using SEQ-1/2/3 pins |
| Phase adding/shedding | Dynamically adjusts active phases based on load - improves light-load efficiency in servers and storage systems |
| 12-bit digital monitoring | Simultaneously measures input/output voltage/current and temperature per rail - eliminates need for external ADCs |
| Enhanced flash with ECC | Stores full configuration with error correction - ensures reliable startup after 20 k erase/write cycles and 100-year retention |
Applications
| FPGA Core Power | Server Memory Subsystem |
|---|---|
Use Scenario: Regulating 0.85 V ±10 mV core supply for high-end FPGA under dynamic load (0–100 A). IC Role / Device Role / Timing Role: Primary digital PWM controller managing 4-phase rail with real-time current balancing and soft-start ramp. Use Value: 1 mV closed-loop resolution and 250 ps duty-cycle control maintain voltage within spec during 50 A/µs transients. |
Use Scenario: Delivering tightly tracked 1.2 V DDR4 VDDQ and 2.5 V VPP rails with synchronized sequencing. IC Role / Device Role / Timing Role: Multi-rail sequencer and tracker using SEQ-x and Vtrack pins to enforce power-up order and voltage offset. Use Value: Hardware-based tracking eliminates software dependency and ensures <100 ns inter-rail skew during state transitions. |
| Telecom Baseband Processor | Industrial ATE Power Shelf |
Use Scenario: Supplying 1.0 V, 1.8 V, and 3.3 V rails to multi-core baseband SoC with strict transient response requirements. IC Role / Device Role / Timing Role: Dual-rail controller with phase shedding and hardware fault detection for overvoltage (300 µs response) and overtemperature (2.5 s). Use Value: Analog comparator-based fault path bypasses ADC latency - critical for protecting expensive RF front-end components. |
Use Scenario: Programmable power shelf delivering configurable 3.3–12 V outputs to DUTs with margining and calibration support. IC Role / Device Role / Timing Role: Calibration-capable controller using PMBus margin commands and internal 12-bit ADC for traceable voltage accuracy. Use Value: ±10 mV setpoint accuracy and ±20 mV over temperature enable automated test equipment compliance with MIL-STD-704 limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase digital PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCD9244PFCR | 4-phase max (vs. 8), no SRE outputs, reduced ADC channels (8 vs. 12) | Suitable for cost-sensitive dual-rail applications without phase shedding or synchronous rectifier control | Select when only 2 rails × 2 phases needed and SRE functionality is unnecessary |
| UCD9224PFCR | 2-rail, 4-phase, no voltage tracking, simplified compensator (2P/2Z), no TMUX support | Targeted at entry-level telecom or networking modules with fixed sequencing and basic telemetry | Choose for lower BOM count where advanced features like tracking, margining, or temp multiplexing are unused |
Compared with UCD9248PFCR, the UCD9244PFCR reduces phase count and removes SRE control for simpler topologies, while the UCD9224PFCR omits tracking, margining, and advanced compensation - making both alternatives suitable only when those UCD9248PFCR capabilities remain unused in the target design.
Availability
UCD9248PFCR is available at Aetrix Electronics and suitable for FPGA power delivery, server memory regulation, and telecom baseband processor supply requiring stable component supply, long-term lifecycle assurance, and full PMBus configurability.
Supply support for UCD9248PFCR 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 ICs, with decades of expertise in high-reliability power control solutions.
The UCD9248PFCR belongs to TI's UCD92xx digital power controller family, designed specifically for non-isolated, multi-phase synchronous buck converters in datacenter, telecom, and industrial applications demanding precision, configurability, and fault resilience.
FAQ
What is the maximum number of power phases supported by the UCD9248PFCR?
The UCD9248PFCR supports up to 8 power phases across 4 independently regulated voltage rails. This enables high-current delivery with automatic current and temperature balancing, phase adding/shedding, and per-phase fault monitoring - essential for modern FPGA and ASIC power delivery where thermal and load distribution must be tightly managed.
Does the UCD9248PFCR include integrated nonvolatile memory, and what is its endurance?
Yes, the UCD9248PFCR includes enhanced flash memory with error correction code (ECC) that stores full configuration parameters. It supports 20,000 erase/write cycles and guarantees 100 years of data retention at 25°C junction temperature - ensuring reliable boot-up and configuration persistence across industrial and telecom deployments.
How does the UCD9248PFCR achieve fast overcurrent fault response?
The UCD9248PFCR uses dedicated analog comparators on each CS-A input (e.g., CS-1A, CS-2A) with hardware fault detection paths that operate independently of the ADC. This enables overcurrent response in as little as 4 switching cycles (≈4 µs at 1 MHz), bypassing software or digital monitoring latency - critical for protecting MOSFETs and inductors during short-circuit events.
Can the UCD9248PFCR perform voltage tracking between multiple rails?
Yes, the UCD9248PFCR supports hardware-based voltage tracking using the Vtrack pin and internal sequencing logic. It can enforce precise proportional ramping (e.g., 1.2 V rail tracking 0.8 V rail at 1.5× ratio) or fixed offset relationships during startup and shutdown - eliminating need for external tracking ICs in multi-rail systems like DDR memory interfaces.
What package type and thermal characteristics does the UCD9248PFCR use?
The UCD9248PFCR is packaged in an 80-pin TQFP (PFC) with exposed thermal pad, rated for operation from –40°C to +125°C ambient. Its internal thermal sensor achieves ±5°C accuracy across 0–125°C, and the package supports standard reflow profiles with JEDEC J-STD-020-compliant moisture sensitivity level (MSL) 3 handling.
UCD9248PFCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Fusion Digital Power™
- Package/Case:
- 80-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Special Purpose
- Current - Supply:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 80-TQFP (12x12)
UCD9248PFCR FAQ
1.How can I place an order for UCD9248PFCR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCD9248PFCR 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 UCD9248PFCR reliable?
The price and inventory of UCD9248PFCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCD9248PFCR is usually 5 days.
3.What payment methods are accepted for UCD9248PFCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCD9248PFCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCD9248PFCR?
UCD9248PFCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCD9248PFCR 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 UCD9248PFCR?
For technical support, including UCD9248PFCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCD9248PFCR requirements.
6.How does Aetrix verify that UCD9248PFCR is sourced from the original manufacturer or authorized distributors?
All UCD9248PFCR 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 UCD9248PFCR meets industry standards.
7.What is the process for return or replacement of UCD9248PFCR?
All UCD9248PFCR units undergo pre-shipment inspection (PSI). If there is an issue with UCD9248PFCR, 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 UCD9248PFCR part is unused and in its original packaging.
Return procedure for UCD9248PFCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCD9248PFCR Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
