ZHCSCI5B May 2014 – July 2016 TPS544B20 , TPS544C20
PRODUCTION DATA.
- 1 特性
- 2 应用范围
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Turn-On and Turn-Off Delay and Sequencing
- 8.3.2 Pre-Biased Output Start-Up
- 8.3.3 Voltage Reference
- 8.3.4 Differential Remote Sense and Output Voltage Setting
- 8.3.5 PMBus Output Voltage Adjustment
- 8.3.6 Switching Frequency
- 8.3.7 Soft-Start
- 8.3.8 Linear Regulators BP3 and BP6
- 8.3.9 External Bypass (BPEXT)
- 8.3.10 Current Monitoring and Low-Side MOSFET Overcurrent Protection
- 8.3.11 High-Side MOSFET Short-Circuit Protection
- 8.3.12 Over-Temperature Protection
- 8.3.13 Input Undervoltage Lockout (UVLO)
- 8.3.14 Output Overvoltage and Undervoltage Protection
- 8.3.15 Fault Protection Responses
- 8.3.16 PMBus General Description
- 8.3.17 PMBus Address
- 8.3.18 PMBus Connections
- 8.3.19 Auto ARA (Alert Response Address) Response
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6
Register Maps
- 8.6.1 OPERATION (01h)
- 8.6.2 ON_OFF_CONFIG (02h)
- 8.6.3 CLEAR_FAULTS (03h)
- 8.6.4 WRITE_PROTECT (10h)
- 8.6.5 STORE_USER_ALL (15h)
- 8.6.6 RESTORE_USER_ALL (16h)
- 8.6.7 CAPABILITY (19h)
- 8.6.8 VOUT_MODE (20h)
- 8.6.9 VIN_ON (35h)
- 8.6.10 VIN_OFF (36h)
- 8.6.11 IOUT_CAL_OFFSET (39h)
- 8.6.12 IOUT_OC_FAULT_LIMIT (46h)
- 8.6.13 IOUT_OC_FAULT_RESPONSE (47h)
- 8.6.14 IOUT_OC_WARN_LIMIT (4Ah)
- 8.6.15 OT_FAULT_LIMIT (4Fh)
- 8.6.16 OT_WARN_LIMIT (51h)
- 8.6.17 TON_RISE (61h)
- 8.6.18 STATUS_BYTE (78h)
- 8.6.19 STATUS_WORD (79h)
- 8.6.20 STATUS_VOUT (7Ah)
- 8.6.21 STATUS_IOUT (7Bh)
- 8.6.22 STATUS_TEMPERATURE (7Dh)
- 8.6.23 STATUS_CML (7Eh)
- 8.6.24 STATUS_MFR_SPECIFIC (80h)
- 8.6.25 READ_VOUT (8Bh)
- 8.6.26 READ_IOUT (8Ch)
- 8.6.27 READ_TEMPERATURE_2 (8Eh)
- 8.6.28 PMBUS_REVISION (98h)
- 8.6.29 MFR_SPECIFIC_00 (D0h)
- 8.6.30 VREF_TRIM (MFR_SPECIFIC_04) (D4h)
- 8.6.31 STEP_VREF_MARGIN_HIGH (MFR_SPECIFIC_05) (D5h)
- 8.6.32 STEP_VREF_MARGIN_LOW (MFR_SPECIFIC_06) (D6h)
- 8.6.33 PCT_VOUT_FAULT_PG_LIMIT (MFR_SPECIFIC_07) (D7h)
- 8.6.34 SEQUENCE_TON_TOFF_DELAY (MFR_SPECIFIC_08) (D8h)
- 8.6.35 OPTIONS (MFR_SPECIFIC_21) (E5h)
- 8.6.36 MASK_SMBALERT (MFR_SPECIFIC_23) (E7h)
- 8.6.37 DEVICE_CODE (MFR_SPECIFIC_44) (FCh)
-
9 Applications and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1 Design Requirements
- 9.2.2
Detailed Design Procedure
- 9.2.2.1 Switching Frequency Selection
- 9.2.2.2 Inductor Selection
- 9.2.2.3 Output Capacitor Selection
- 9.2.2.4 D-CAP Mode and D-CAP2 Mode Stability
- 9.2.2.5 Input Capacitor Selection
- 9.2.2.6 Bootstrap Capacitor and Resistor Selection
- 9.2.2.7 BP6, BP3 and BPEXT
- 9.2.2.8 R-C Snubber and VIN Pin High-Frequency Bypass
- 9.2.2.9 Temperature Sensor
- 9.2.2.10 Key PMBus Parameter Selection
- 9.2.2.11 Output Voltage Setting and Frequency Compensation Selection
- 9.2.3 Application Curves
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
1 特性
- 启用 PMBus 的转换器：20A，30A
- 4.5V 至 18V 输入，0.6V 至 5.5V 输出
- 5mm x 7mm 薄型四方扁平无引线 (LQFN) 封装，焊球间距为 0.5mm
- 单个散热焊盘
- 集成 4.5mΩ 和 2.0mΩ 堆叠 NexFET™功率级
- 600mV，0.5% 基准
- 无损耗、低侧金属氧化物半导体场效应晶体管 (MOSFET) 电流感测
- 可选 D-CAP™和 D-CAP2™模式控制
- 差分远程感应
- 单启动至预偏置输出
- 输出电压裕度和修整
- 输出电压和输出电流报告
- 使用 2N3904 时的外部温度监视
- 可经由 PMBus 编程
- 过流保护
- 欠压闭锁 (UVLO)，软启动
- 电源正常 (PGOOD)，过压 (OV)，欠压 (UV)，过热 (OT) 电平
- 故障响应
- 接通和关闭延迟
- 热关断
- 引脚兼容 20A，30A 转换器
2 应用范围
- 测试和测量仪器
- 以太网交换机、光交换机、路由器、基站
- 服务器
- 企业级存储固态硬盘 (SSD)
- 高密度电源解决方案
3 说明
TPS544B20 和 TPS544C20 器件是 PMBus 兼容型非隔离式直流/直流集成式 FET 转换器，支持高频运行并提供 20A 或 30A 电流输出，采用 5mm × 7mm 封装，可实现高功率密度和快速瞬态性能，具有最小的 PCB 面积。PMBus 接口用于转换器配置，并监视关键参数，其中包括输出电压、电流和一个可选外部温度。由集成 NexFET 功率级和经优化驱动器提供的高频、低损耗开关可实现极高密度电源解决方案以及减小的电感器和滤波电容器尺寸。根据系统要求，对故障情况的响应可被设定为重新启动或锁断。
Table 1. 器件信息(1)
| 部件名称 | 封装 | 封装尺寸（标称值） |
|---|---|---|
| TPS544B20 | LQFN (40) | 5.00mm x 7.00mm |
| TPS544C20 |
- 如需了解所有可用封装，请见数据表末尾的可订购产品附录。
效率与输出电流间的关系
4 修订历史记录
Changes from A Revision (February 2016) to B Revision
- Changed From: PGND to GND in the Pin Functions table Description for pins BP6 and BPEXT.Go
- Changed Pin Functions table Description for VDD pin To: "Bypass with a 0.1-µF to 1.0-µF capacitor to GND (thermal pad or GND pins) or through a dedicated connection to AGNDSNS." Go
- Changed From: "PGND" To: "GND" in Linear Regulators BP3 and BP6 and External Bypass (BPEXT) Section text. Go
- Changed instances From: "PGND" To: "GND" in the Device Functional ModesGo
- Changed From: " a value of 4.7 μF" To: " a value of 0.1 μF to 1.0 μF" in the Input Capacitor SelectionGo
- Changed text string From: "...one 4.7-μF, 25-V ceramic capacitor..." To: "...one 1.0-μF, 25-V ceramic capacitor..." in the Input Capacitor Selection description.Go
- Changed From: "PGND" To: "GND" in the BP6, BP3 and BPEXT section Go
- Added text to Layout Guidelines section for emphasis on grounding schemes. Go
- Changed PCB Layout Recommendation figure. Go
- Added 接收文档更新通知 部分Go
Changes from * Revision (May 2014) to A Revision
- Deleted package suffix and reel quantities from Device Comparison Table Go
- Changed "Handling" Ratings table to "ESD" Ratings and moved Tstg spec to the Absolute Maximum Ratings table.Go
- Added sentence in Switching Frequency description.Go
- Changed "Hiccup" to "Shutdown and latch-off" as the Default Behavior for CMD Command; and, changed Default Register Value from 3Fh to 07h in Table 5, CMD Code 47h Go
- Changed "address" to "frequency" in the PMBus Command Description for CMD Code 80h in Table 5. Go
- Changed Default Value for Bit Position 5, 4, and 3 from 1 1 1 to 0 0 0 respectively in the IOUT_OC_FAULT_RESPONSE (47h) table. Go
- Changed "IVADDR" to "IVFREQ" for Function at Bit Position 4 of the STATUS_MFR_SPECIFIC (80h); and also in the accompanying description. Go
- Added 社区资源 部分Go