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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

Texas Instruments UCD9244RGCR

Name: UCD9244RGCR
Brand: Texas Instruments
SKU: UCD9244RGCR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UCD9244RGCR

Manufacturer:: Texas Instruments

Category:: Power Management - Specialized

Package:: 64-VFQFN Exposed Pad

Datasheet:: UCD9244RGCR.pdf

Description:: IC DGTL PWM SYSTEM CTRLR 64VQFN

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Product details

Overview

UCD9244RGCR from Texas Instruments is a four-rail synchronous buck digital PWM controller for non-isolated DC/DC power applications, integrating hardware-accelerated 3-pole/3-zero compensators, 12-bit ADC monitoring (input/output voltage/current, temperature), and support for 4-/6-/8-bit VID interfaces. It delivers up to 2 MHz switching frequency with 250 ps duty-cycle resolution and 1 mV closed-loop regulation resolution, deployed in FPGA, DSP, and memory power subsystems.

For engineers reviewing the UCD9244RGCR datasheet, UCD9244RGCR pinout, UCD9244RGCR application, or UCD9244RGCR equivalent, this page provides verified technical context on its multi-rail loop management, PMBus 1.2 compliance, VID-configurable voltage sequencing, and real-time fault response times down to 100 µs for over-current events.

Technical Context

The UCD9244RGCR implements four independent Fusion Power Peripherals (FPPs), each with a differential error amplifier, 10-bit DAC reference, fast ADC, and dedicated 3-pole/3-zero IIR digital compensator. Each FPP drives one DPWM output (DPWM1A–DPWM4A) and monitors its rail via dedicated EAP/EAN inputs and CSx current sense channels.

It supports simultaneous VID interface modes across rails-4-bit parallel, 6-bit time-multiplexed, or 8-bit PMBus-based-with configurable lockout intervals and soft-start/stop profiles. Fault detection combines analog comparators (for sub-µs over-current response) and digital ADC monitoring (with programmable intervals from 200 µs to 100 ms).

Key Specifications

Parameter	Value and Actual Design Meaning
Output rails	Four independent synchronous buck controllers, each with dedicated DPWM, error amp, and compensator.
Switching frequency	Up to 2 MHz - enables compact magnetics and high-density power designs.
Duty-cycle resolution	250 ps - supports fine-grained control at high frequencies for stable transient response.
Closed-loop resolution	1 mV - ensures precise regulation for low-voltage, high-current FPGA/DSP cores.
ADC resolution & speed	12-bit, 260 ksps - enables accurate real-time monitoring of V_OUT, I_OUT, V_IN, and temperature across all rails.
VID interface support	Per-rail configurable 4-bit, 6-bit, or 8-bit (PMBus) - allows dynamic voltage scaling from TMS320C6670/C6678 DSPs and ASICs.
Fault response latency	As low as 18 µs (hardware FAULT pin), 100 µs (analog comparator over-current), 250 µs (voltage fault) - critical for protecting sensitive loads.
PMBus compliance	PMBus 1.2, SMBus 2.0, I²C-compatible - supports standard commands plus MFR_SPECIFIC for fusion-specific configuration and logging.

Pinout & Package

UCD9244RGCR uses a 64-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad connected to analog ground. Pin functions are validated per TI SLVSAL6A Rev. February 2011, Table 1 and Figure 2.

Pin/Terminal	Circuit Role	Design Meaning
DPWM1A–DPWM4A	Digital PWM outputs	High-resolution (250 ps) gate drive signals for external MOSFET drivers; each synchronized to its own FPP loop.
EAp1–EAp4 / EAn1–EAn4	Differential voltage feedback inputs	Direct connection to ±V_sense of each buck stage; enables precise regulation with common-mode rejection.
CS1A–CS4A	Analog current sense inputs	Inputs to dedicated analog comparators and ADC channels; used for peak-current limiting and real-time I_OUT measurement.
VID1A–VID4S (mux'd)	Voltage ID interface pins	Support 4-/6-bit parallel VID per rail; JTAG pins (TCK/TDO/TDI/TMS) share VID4x pins - requires mode selection at boot.
PMBus_Clk / PMBus_Data / Alert / Cntrl	PMBus physical layer	100 kHz–1 MHz operation; pull-up resistors required (2 kΩ); supports multi-device address decoding via ADDR0/ADDR1.
V33D / V33A / V33DIO1 / V33DIO2	Power domains	V33D (digital core), V33A (analog), V33DIOx (I/O buffers) - require separate decoupling; BPCap pin connects 0.1 µF to AGND for 1.8V regulator stability.

Key Features

Feature	Design Value
Hardware-accelerated 3P3Z compensator	Enables stable loop tuning without external components; non-linear gain improves load-transient recovery by >40% vs. fixed-gain designs.
12-bit multi-channel ADC monitoring	Simultaneously measures V_OUT, I_OUT, V_IN, internal/external temperature (Temp1–Temp4), and auxiliary inputs - no external sensors needed for full telemetry.
Configurable VID interface per rail	Each of four rails accepts independent VID format (4/6/8-bit), enabling mixed-source systems (e.g., C6670 + C6678 + FPGA + memory controller).
Enhanced nonvolatile memory with ECC	Stores full configuration (compensators, margins, sequences, faults) with error correction; rated for 20K write cycles and 100-year data retention at 25°C.
Multi-level over-current protection	Combines analog comparator (fast shutdown), digital ADC averaging (accurate trip), and external fault inputs - eliminates single-point failure modes.
SyncIn pin for inter-device clock alignment	Aligns DPWM clocks across multiple UCD92xx devices - essential for interleaved multi-phase operation and EMI reduction.

Applications

FPGA Core Power	DSP Voltage Scaling
Use Scenario: Powering Xilinx Kintex/Virtex or Intel Stratix FPGA core rails requiring dynamic voltage scaling under thermal or performance throttling. IC Role / Device Role / Timing Role: Four-rail digital controller managing independent VCCINT, VCCAUX, VCCBRAM, and VCCIO with per-rail VID tracking and sequencing. Use Value: Achieves <1 mV regulation accuracy and <250 µs transient recovery while eliminating discrete compensation networks and external ADCs.	Use Scenario: Supplying TMS320C6670/C6678 DSP cores where voltage must scale dynamically based on processing load and temperature. IC Role / Device Role / Timing Role: VID interface receiver and multi-loop PWM generator, synchronizing rail transitions with DSP command timing via 4-bit parallel VID handshake. Use Value: Enables sub-100 µs voltage step changes with hardware-enforced sequencing order and soft-stop ramping to prevent DSP brownout.
Memory Subsystem Regulation	Telecom Line Card Power
Use Scenario: Delivering tightly regulated DDR3/DDR4 VDDQ, VTT, VREF, and VPP rails in baseband or packet-processing line cards. IC Role / Device Role / Timing Role: Precision four-output controller performing voltage margining, tracking, and real-time current monitoring per rail using integrated ADC and comparators. Use Value: Reduces BOM count by 7+ components (error amps, compensators, ADCs, sequencers) while supporting JEDEC-compliant margining tolerance (±1%).	Use Scenario: Powering multi-ASIC telecom line cards with strict thermal, sequencing, and fault-reporting requirements in NEBS-compliant chassis. IC Role / Device Role / Timing Role: Centralized PMBus-managed power supervisor coordinating up to four isolated/non-isolated buck stages with remote fault signaling via PMBus_ALERT. Use Value: Provides certified fault logging, 125°C junction operation, and ECC-protected configuration storage - meeting telecom reliability and serviceability mandates.

FPGA Core Power

DSP Voltage Scaling

Use Scenario: Powering Xilinx Kintex/Virtex or Intel Stratix FPGA core rails requiring dynamic voltage scaling under thermal or performance throttling.

IC Role / Device Role / Timing Role: Four-rail digital controller managing independent VCCINT, VCCAUX, VCCBRAM, and VCCIO with per-rail VID tracking and sequencing.

Use Value: Achieves <1 mV regulation accuracy and <250 µs transient recovery while eliminating discrete compensation networks and external ADCs.

Use Scenario: Supplying TMS320C6670/C6678 DSP cores where voltage must scale dynamically based on processing load and temperature.

IC Role / Device Role / Timing Role: VID interface receiver and multi-loop PWM generator, synchronizing rail transitions with DSP command timing via 4-bit parallel VID handshake.

Use Value: Enables sub-100 µs voltage step changes with hardware-enforced sequencing order and soft-stop ramping to prevent DSP brownout.

Memory Subsystem Regulation

Telecom Line Card Power

Use Scenario: Delivering tightly regulated DDR3/DDR4 VDDQ, VTT, VREF, and VPP rails in baseband or packet-processing line cards.

IC Role / Device Role / Timing Role: Precision four-output controller performing voltage margining, tracking, and real-time current monitoring per rail using integrated ADC and comparators.

Use Value: Reduces BOM count by 7+ components (error amps, compensators, ADCs, sequencers) while supporting JEDEC-compliant margining tolerance (±1%).

Use Scenario: Powering multi-ASIC telecom line cards with strict thermal, sequencing, and fault-reporting requirements in NEBS-compliant chassis.

IC Role / Device Role / Timing Role: Centralized PMBus-managed power supervisor coordinating up to four isolated/non-isolated buck stages with remote fault signaling via PMBus_ALERT.

Use Value: Provides certified fault logging, 125°C junction operation, and ECC-protected configuration storage - meeting telecom reliability and serviceability mandates.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital multi-rail PWM controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
UCD9246RGCT	6-output variant with identical architecture, pinout, and firmware compatibility; adds two extra DPWM/FPP channels and associated pins.	Suitable when >4 rails are required (e.g., dual-FPGA + memory + aux); not drop-in - requires PCB redesign for added pins and routing.	Select UCD9246RGCT only if sixth rail is mandatory; UCD9244RGCR remains optimal for cost- and space-constrained 4-rail systems.
LM25069GSDX/NOPB	Single-channel hot-swap controller with PMBus, no DPWM generation, no VID support, no multi-loop compensation.	Only manages input-side protection and sequencing - cannot replace UCD9244RGCR's full DC/DC control function.	LM25069GSDX/NOPB serves complementary upstream protection; it is not a functional alternative but may coexist in same system.

Compared with UCD9246RGCT, the UCD9244RGCR reduces pin count, layout complexity, and cost for 4-rail applications without sacrificing resolution, monitoring depth, or VID flexibility; versus LM25069GSDX/NOPB, it provides complete closed-loop digital power control rather than basic power management.

Availability

UCD9244RGCR is available at Aetrix Electronics and suitable for FPGA core power, DSP voltage scaling, memory subsystem regulation, and telecom line card power requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for UCD9244RGCR 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 expertise in high-reliability power IC design.

The UCD9244RGCR belongs to TI's Fusion Digital Power™ controller family, engineered specifically for digitally managed, multi-rail DC/DC conversion in high-performance computing, networking, and telecommunications infrastructure.

FAQ

What is the maximum switching frequency supported by the UCD9244RGCR?

The UCD9244RGCR supports switching frequencies up to 2 MHz, with 250 ps duty-cycle resolution. This enables high-efficiency, compact power designs using small inductors and capacitors - critical for space-constrained FPGA and DSP applications. The device maintains stable operation across its full range, verified per TI SLVSAL6A electrical characteristics.

Does the UCD9244RGCR support both 4-bit and 6-bit VID interfaces simultaneously?

Yes - the UCD9244RGCR allows per-rail VID configuration via PMBus command VID_CONFIG. Rail 1 can operate in 4-bit mode while Rail 2 uses 6-bit, and Rails 3–4 may use 8-bit PMBus VID. This flexibility supports heterogeneous host devices (e.g., C6670 + ASIC + FPGA) on a single controller without external logic.

How does the UCD9244RGCR handle over-current protection?

The UCD9244RGCR implements three-tier over-current protection: (1) analog comparators on CS1A–CS4A for <4-cycle response (<1 µs at 2 MHz), (2) digital ADC monitoring with programmable thresholds and filtering, and (3) external fault inputs (FLT1A–FLT4A). All paths trigger configurable responses including shutdown, retry, or latched fault.

Can the UCD9244RGCR be configured without a PC or Fusion Digital Power Designer?

Yes - the UCD9244RGCR supports full configuration via PMBus 1.2 commands (standard and MFR_SPECIFIC) using any compliant host microcontroller or BMC. While Fusion Digital Power Designer simplifies development, all registers - including compensator coefficients, VID settings, and fault limits - are accessible and writable over PMBus at runtime or boot.

What is the operating temperature range for the UCD9244RGCR?

The UCD9244RGCR is specified for an operating free-air temperature range of –40°C to +125°C, with junction temperature limited to 125°C. Its thermal design - including QFN package with exposed pad and internal thermal sensing - ensures reliable operation in demanding environments like telecom line cards and industrial compute modules.

UCD9244RGCR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 64-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: PWM Controller

Current - Supply:: 8mA

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 64-VQFN (9x9)

UCD9244RGCR FAQ

1.How can I place an order for UCD9244RGCR through Aetrix?

Please submit a Request for Quotation (RFQ) for UCD9244RGCR 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 UCD9244RGCR reliable?

The price and inventory of UCD9244RGCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCD9244RGCR is usually 5 days.

3.What payment methods are accepted for UCD9244RGCR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCD9244RGCR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for UCD9244RGCR?

UCD9244RGCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UCD9244RGCR 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 UCD9244RGCR?

For technical support, including UCD9244RGCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCD9244RGCR requirements.

6.How does Aetrix verify that UCD9244RGCR is sourced from the original manufacturer or authorized distributors?

All UCD9244RGCR 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 UCD9244RGCR meets industry standards.

7.What is the process for return or replacement of UCD9244RGCR?

All UCD9244RGCR units undergo pre-shipment inspection (PSI). If there is an issue with UCD9244RGCR, 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 UCD9244RGCR part is unused and in its original packaging.

Return procedure for UCD9244RGCR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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