Overview
The UCD9248PFCR is a multi-rail, multi-phase synchronous buck digital PWM controller designed by Texas Instruments for non-isolated DC/DC power applications. This device integrates dedicated circuitry for DC/DC loop management, including flash memory and a serial interface to support configurability, monitoring, and management. It is part of the Fusion Digital Power™ series and is optimized to minimize the total system component count by reducing the need for external circuits. The UCD9248PFCR supports a wide range of features to enhance system efficiency and reliability, including multi-loop management, sequencing, margining, tracking, and intelligent phase management.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | 80-TQFP (12x12) |
| Pins | 80 |
| Operating Temperature Range | -40°C to 125°C |
| Supply Voltage | 3 V ~ 3.6 V |
| Mounting Type | Surface Mount |
| Switching Frequency | Up to 2 MHz |
| Duty-Cycle Resolution | 250 ps |
| Closed Loop Resolution | Up to 1 mV |
| RoHS Compliance | Yes, RoHS Version 2011/65/EU, 2015/863 |
Key Features
- Fully configurable multi-output and multi-phase non-isolated DC/DC PWM controller
- Controls up to 4 voltage rails and up to 8 phases
- Supports switching frequencies up to 2 MHz with 250 ps duty-cycle resolution
- Up to 1 mV closed loop resolution
- Hardware-accelerated, 3-pole/3-zero compensator with non-linear gain for improved transient performance
- Supports multiple soft-start and soft-stop configurations, including prebias start-up
- Supports voltage tracking, margining, and sequencing
- Supports current and temperature balancing for multi-phase power stages
- Supports phase adding/shedding for multi-phase power stages
- Sync In/Out pins align DPWM clocks between multiple UCD92xx devices
- 12-bit digital monitoring of power supply parameters, including input/output current and voltage, and temperature at each power stage
- Multiple levels of over-current fault protection, including external current fault inputs and analog comparators monitoring current sense voltage
- Over- and under-voltage fault protection, and over-temperature fault protection
- Enhanced nonvolatile memory with error correction code (ECC)
- Device operates from a single supply with an internal regulator controller, allowing operation over a wide supply voltage range
- Supported by Fusion Digital Power Designer, a full-featured PC-based design tool to simulate, configure, and monitor power supply performance
Applications
The UCD9248PFCR is designed for special purpose power management applications, particularly in non-isolated DC/DC power systems. It is suitable for use in various high-performance electronic systems that require multiple voltage rails and precise power management, such as data centers, cloud computing infrastructure, high-end servers, and other advanced electronic equipment. The device's ability to support multiple phases and voltage rails, along with its advanced monitoring and control features, makes it an ideal choice for complex power supply designs.
Q & A
- What is the UCD9248PFCR used for?
The UCD9248PFCR is a multi-rail, multi-phase synchronous buck digital PWM controller used for non-isolated DC/DC power applications.
- What package type does the UCD9248PFCR come in?
The UCD9248PFCR comes in an 80-TQFP (12x12) package.
- What is the operating temperature range of the UCD9248PFCR?
The operating temperature range is -40°C to 125°C.
- What is the maximum switching frequency supported by the UCD9248PFCR?
The UCD9248PFCR supports switching frequencies up to 2 MHz.
- Does the UCD9248PFCR support multiple voltage rails and phases?
Yes, it controls up to 4 voltage rails and up to 8 phases.
- What kind of fault protection does the UCD9248PFCR offer?
The UCD9248PFCR offers multiple levels of over-current fault protection, over- and under-voltage fault protection, and over-temperature fault protection.
- Is the UCD9248PFCR RoHS compliant?
Yes, the UCD9248PFCR is RoHS compliant under versions 2011/65/EU and 2015/863.
- What tool is used to configure and monitor the UCD9248PFCR?
The Fusion Digital Power Designer is used to configure, simulate, and monitor the power supply performance of the UCD9248PFCR.
- Does the UCD9248PFCR support digital monitoring of power supply parameters?
Yes, it supports 12-bit digital monitoring of power supply parameters, including input/output current and voltage, and temperature at each power stage.
- What is the supply voltage range for the UCD9248PFCR?
The supply voltage range is 3 V to 3.6 V.
- Is the UCD9248PFCR suitable for high-performance electronic systems?
Yes, it is designed for use in high-performance electronic systems that require precise power management.
