ZHCSCI5B May 2014 – July 2016 TPS544B20 , TPS544C20
PRODUCTION DATA.
- 1 特性
- 2 應用范圍
- 3 說明
- 4 修訂歷史記錄
- 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器件和文檔支持
- 13機械、封裝和可訂購信息
1 特性
- 啟用 PMBus 的轉換器：20A，30A
- 4.5V 至 18V 輸入，0.6V 至 5.5V 輸出
- 5mm x 7mm 薄型四方扁平無引線 (LQFN) 封裝，焊球間距為 0.5mm
- 單個散熱焊盤
- 集成 4.5mΩ 和 2.0mΩ 堆疊 NexFET™功率級
- 600mV，0.5% 基準
- 無損耗、低側金屬氧化物半導體場效應晶體管 (MOSFET) 電流感測
- 可選 D-CAP™和 D-CAP2™模式控制
- 差分遠程感應
- 單啟動至預偏置輸出
- 輸出電壓裕度和修整
- 輸出電壓和輸出電流報告
- 使用 2N3904 時的外部溫度監(jiān)視
- 可經由 PMBus 編程
- 過流保護
- 欠壓閉鎖 (UVLO)，軟啟動
- 電源正常 (PGOOD)，過壓 (OV)，欠壓 (UV)，過熱 (OT) 電平
- 故障響應
- 接通和關閉延遲
- 熱關斷
- 引腳兼容 20A，30A 轉換器
2 應用范圍
- 測試和測量儀器
- 以太網交換機、光交換機、路由器、基站
- 服務器
- 企業(yè)級存儲固態(tài)硬盤 (SSD)
- 高密度電源解決方案
3 說明
TPS544B20 和 TPS544C20 器件是 PMBus 兼容型非隔離式直流/直流集成式 FET 轉換器，支持高頻運行并提供 20A 或 30A 電流輸出，采用 5mm × 7mm 封裝，可實現高功率密度和快速瞬態(tài)性能，具有最小的 PCB 面積。PMBus 接口用于轉換器配置，并監(jiān)視關鍵參數，其中包括輸出電壓、電流和一個可選外部溫度。由集成 NexFET 功率級和經優(yōu)化驅動器提供的高頻、低損耗開關可實現極高密度電源解決方案以及減小的電感器和濾波電容器尺寸。根據系統要求，對故障情況的響應可被設定為重新啟動或鎖斷。
Table 1. 器件信息(1)
| 部件名稱 | 封裝 | 封裝尺寸（標稱值） |
|---|---|---|
| TPS544B20 | LQFN (40) | 5.00mm x 7.00mm |
| TPS544C20 |
- 如需了解所有可用封裝，請見數據表末尾的可訂購產品附錄。
效率與輸出電流間的關系
4 修訂歷史記錄
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 接收文檔更新通知 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 社區(qū)資源 部分Go