描述 Description

TPS25990 是采用小型封裝的集成式大電流電路保護(hù)和電源管理器件。該器件只需很少的外部元件即可提供多種保護(hù)模式，能夠非常有效地抵御過載、短路和過多浪涌電流。

集成的 PMBus? 接口允許主機(jī)控制器實(shí)時(shí)監(jiān)測(cè)、控制和配置系統(tǒng)。關(guān)鍵系統(tǒng)參數(shù)可以通過遠(yuǎn)程遙測(cè)進(jìn)行回讀。各種保護(hù)、警告閾值和系數(shù)可通過 PMBus? 進(jìn)行配置或存儲(chǔ)在非易失性配置存儲(chǔ)器中。黑盒故障記錄功能有助于調(diào)試現(xiàn)場(chǎng)故障和退貨。

該器件可用作獨(dú)立電子保險(xiǎn)絲，也可作為并聯(lián)電子保險(xiǎn)絲配置中的主控制器進(jìn)行連接，以支持更高的電流。所有器件在啟動(dòng)和穩(wěn)態(tài)期間均主動(dòng)同步其運(yùn)行狀態(tài)并共享電流，以避免某些器件上出現(xiàn)過載情況而導(dǎo)致并行鏈過早關(guān)閉或部分關(guān)閉。

集成的快速、準(zhǔn)確檢測(cè)模擬負(fù)載電流監(jiān)測(cè)器有助于進(jìn)行預(yù)測(cè)性維護(hù)，并且先進(jìn)的動(dòng)態(tài)平臺(tái)電源管理技術(shù)（如 Intel PSYS 和 PROCHOT）可更大限度地提高系統(tǒng)吞吐量和電源利用率。這與集成的數(shù)字示波器功能和黑盒相結(jié)合，有助于在關(guān)鍵系統(tǒng)中進(jìn)行預(yù)測(cè)性維護(hù)。

此類器件的額定工作結(jié)溫范圍為 –40°C 至 +125°C。

特性 Features

? Input operating voltage range: 2.9 V to 16 V
? 20-V absolute maximum at input
? Withstands up to –1 V at output

? Integrated low on-resistance FET: 0.79 mΩ (typ.)
? Rated for 50 A RMS and 60 A peak current

? Can be used as standalone eFuse or primary controller in parallel configuration
? Supports parallel connection of multiple eFuses for higher current support
? Active device state synchronization and load sharing during start-up and steady-state

? PMBus interface for telemetry, control, configuration and debug
? PIN/EIN/VIN/VOUT/IIN/temperature/fault monitoring
? Power cycle with single command
? On-chip non-volatile configuration memory
? Blackbox fault recording in external EEPROM

? Robust overcurrent protection
? Programmable overcurrent threshold (IOCP): 7 A to 50 A with accuracy of ±5%
? Circuit-breaker response during steady-state with programmable transient blanking timer (OC_TIMER) to support peak load currents
? Active current limit during start-up (ILIM)

? Robust short-circuit protection
? Fast-trip response (280 ns)
? Programmable and fixed thresholds
? Immune to supply line transients — no nuisance tripping

? Programmable overtemperature protection (OTP)
? Guaranteed FET SOA: 8 W√s

? Integrated FET health monitoring and reporting
? Precise analog load current monitoring (IMON)
? 500-kHz analog bandwidth

? Fast overvoltage protection
? Programmable output slew rate control (dVdt)
? Programmable insertion delay timer
? Programmable undervoltage lockout (UVLO)
? Analog die temperature monitor output (TEMP)
? Four configurable general purpose I/O pins
? Small footprint: QFN 4.5-mm × 5-mm, 0.6-mm pitch
? 29-mil clearance between power and GND pins

? 100% Pb Free