UCD9248 数字 PWM 系统控制器
UCD9248 描述
The UCD9248 is a multi-rail, multi-phase synchronous buck digital PWM controller designed for non-isolated DC/DC power applications. This device integrates dedicated circuitry for DC/DC loop management with flash memory and a serial interface to support configurability, monitoring and management.
The UCD9248 was designed to provide a wide variety of desirable features for non-isolated DC/DC converter applications while minimizing the total system component count by reducing external circuits. The solution integrates multi-loop management with sequencing, margining, tracking and intelligent phase management to optimize for total system efficiency. Additionally, loop compensation and calibration are supported without the need to add external components
|
UCD9224 |
UCD9244 |
UCD9246 |
UCD9248 |
| No. of Outputs |
2 |
4 |
4 |
4 |
| No. of Phases |
4 |
4 |
6 |
8 |
| Fs(Max)(kHz) |
2000 |
2000 |
2000 |
2000 |
| PWM Resolution(ps) |
250 |
250 |
250 |
250 |
| Compensator |
3-pole/3-zero |
3-pole/3-zero |
3-pole/3-zero |
3-pole/3-zero |
| Non-Volatile Memory |
Yes w/ECC |
Yes w/ECC |
Yes w/ECC |
Yes w/ECC |
| Pin/Package |
48VQFN |
64VQFN |
64VQFN |
80TQFP |
| Operating Temperature Range(°C) |
-40 to 125 |
-40 to 125 |
-40 to 125 |
-40 to 125 |
UCD9248 特性
- Fully Configurable Multi-Output and Multi- Phase Non-Isolated DC/DC PWM Controller
- Controls Up to 4 Voltage Rails and Up to 6 Phases
- Supports Switching Frequencies Up to 2MHz with 250 ps Duty-Cycle Resolution
- Up To 1mV 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
- Temperature at Each Power Stage
- Multiple Levels of Over-current Fault Protection:
- External Current Fault Inputs
- Fast Overcurrent Protection
- Current Continually Digitally Monitored
- Over- and Under-voltage Fault Protection
- Over-temperature Fault Protection
- Enhanced Nonvolatile Memory with Error Correction Code (ECC)
UCD9248 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| UCD9248PFC |
ACTIVE |
-40 to 125 |
5.85 | 1ku |
TQFP (PFC) | 80 |
96 | JEDEC TRAY (10+1) |
|
| UCD9248PFCR |
ACTIVE |
-40 to 125 |
4.85 | 1ku |
TQFP (PFC) | 80 |
1000 | LARGE T&R |
|
UCD9248 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| UCD9248PFC |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCD9248PFC |
UCD9248PFC |
| UCD9248PFCR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UCD9248PFCR |
UCD9248PFCR |
UCD9248 应用技术支持与电子电路设计开发资源下载
- UCD9248 数据资料 dataSheet 下载.PDF
- TI 德州仪器Fusion Digital Power(TM) 控制器产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- QFN Layout Guidelines (PDF 1279 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPAD™ Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
UCD9248 相关工具
