Texas Instruments UCD9244MRGCTEP

Overview

UCD9244MRGCTEP from Texas Instruments is a radiation-tolerant, four-rail synchronous buck digital PWM controller with integrated ARM7 core, 12-bit ADC (260 ksps), four 3P/3Z IIR compensators, 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 for FPGA, DSP, and multi-rail memory power systems.

For engineers reviewing the UCD9244MRGCTEP datasheet, UCD9244MRGCTEP pinout, UCD9244MRGCTEP application, or UCD9244MRGCTEP equivalent, this page provides verified technical context on its Fusion Power Peripheral architecture, hardware fault detection latency (≤18 µs), PMBus 1.2 compliance, internal temperature sensing (±15°C accuracy), and flash ECC memory retention (100 years at 25°C).

Technical Context

The UCD9244MRGCTEP implements four independent Fusion Power Peripherals (FPPs), each integrating a differential error amplifier, 10-bit DAC reference, programmable-gain AFE, 12-bit ADC, and dedicated 3-pole/3-zero digital IIR filter - enabling simultaneous closed-loop control of four non-isolated DC/DC rails. Each FPP drives a high-resolution DPWM output with 250 ps resolution and supports prebias soft-start, voltage margining, and sequencing.

Hardware-based fault protection includes analog comparators for current sense (OC threshold: 32–2000 mV, 31.25 mV step), external FAULT inputs (response ≤18 µs), and digital over-current monitoring (latency ≤5 ms). The device operates from a single 3.0–3.6 V supply, with internal 3.3 V and 1.8 V regulators, and supports JTAG debug and PMBus 1.2 communication at up to 1 MHz.

Key Specifications

Pinout & Package

UCD9244MRGCTEP is housed in a thermally enhanced 64-pin QFN package (9 mm × 9 mm) with exposed PowerPad connected to analog ground. Pin functions are validated per TI SLVSC86A datasheet Rev. A (March 2014).

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCD9248MRGCT, UCD9244MRGCTEP offers optimal integration for four-rail systems in a smaller footprint and lower cost, while LM25069A serves a fundamentally different role - providing hot-swap and fault management without regulation capability.

Availability

UCD9244MRGCTEP is available at Aetrix Electronics and suitable for networking equipment, telecom base stations, and FPGA/DSP power applications requiring stable component supply, long-term lifecycle support, and radiation-tolerant performance.

Supply support for UCD9244MRGCTEP 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 heritage in high-reliability aerospace and defense solutions.

The UCD9244MRGCTEP belongs to TI's Fusion Digital Power™ controller family, designed specifically for intelligent, configurable, and telemetry-enabled DC/DC power systems in mission-critical infrastructure where precision regulation, fault resilience, and long-term obsolescence management are essential.

FAQ

What is the maximum switching frequency supported by the UCD9244MRGCTEP?

The UCD9244MRGCTEP supports switching frequencies up to 2 MHz, with 250 ps duty-cycle resolution. This capability enables high-efficiency, compact power designs using small inductors and capacitors - particularly valuable in space-constrained telecom and FPGA applications. The device maintains stability and measurement accuracy across the full range, validated per TI SLVSC86A datasheet Section 7.6.

Does the UCD9244MRGCTEP include internal nonvolatile memory, and what is its endurance?

Yes, the UCD9244MRGCTEP integrates flash memory with Error Correction Code (ECC) for storing configuration parameters. It guarantees 100 years of data retention at 25°C and supports 20,000 erase/write cycles, as specified in Section 7.6 of the TI SLVSC86A datasheet. This ensures robust field-upgrade capability and long-term reliability in deployed systems without external EEPROM.

How does the UCD9244MRGCTEP handle over-current protection?

The UCD9244MRGCTEP implements three-tier over-current protection: (1) external FAULT inputs disabling DPWM in ≤18 µs; (2) analog comparators monitoring CSx inputs with 31.25 mV threshold resolution; and (3) continuous digital current monitoring via its 12-bit ADC. All methods trigger configurable responses including shutdown, latch-off, or retry - detailed in Sections 7.5 and 7.8 of the SLVSC86A datasheet.

Can the UCD9244MRGCTEP operate from a single supply, and what voltage range is supported?

Yes, the UCD9244MRGCTEP operates from a single 3.0 V to 3.6 V supply, with internal regulators generating 3.3 V digital and 1.8 V analog rails. Its V33D, V33A, and V33DIO pins are all rated for 3.0–3.6 V operation (Section 7.3), eliminating the need for external LDOs and simplifying system-level power design for ruggedized applications.

Is the UCD9244MRGCTEP compatible with standard PMBus commands and tools?

Yes, the UCD9244MRGCTEP fully complies with PMBus 1.2 and supports the complete command set including READ_VIN, READ_IOUT, READ_TEMPERATURE, STORE_DEFAULT_ALL, and MARGIN commands. It is natively supported by TI's Fusion Digital Power™ Designer GUI, enabling configuration, simulation, and real-time telemetry without custom firmware development.