TPS25947
SLVSFC9 – OCTTOPBSE2R52904270
SLVSFC9 – OCTOBER 2020
www.ti.com
TPS25947xx, 2.7 - 23 V, 5.5 A, 28 mΩ True Reverse Current Blocking eFuse with Input
Reverse Polarity Protection
•
Patient Monitors
1 Features
3 Description
•
•
•
•
Wide operating input voltage range: 2.7 V to 23 V
28-V absolute maximum
Withstands negative voltages up to (VOUT – 19 V)
Integrated back-to-back FETs with low On-
Resistance: RON = 28 mΩ (typ)
The TPS25947xx family of eFuses is a highly
integrated circuit protection and power management
solution in a small package. The devices provide
multiple protection modes using very few external
components and are a robust defense against
overloads, short-circuits, voltage surges, reverse
polarity and excessive inrush current. With integrated
back-to-back FETs, reverse current flow from output
to input is blocked at all times, making the device well
suited for power MUX/ORing applications as well as
systems which need load side energy hold up storage
in case input power supply fails.
•
•
Ideal diode operation with true reverse current
blocking
Fast overvoltage protection
– Overvoltage clamp (OVC) with pin-selectable
threshold (3.8 V, 5.7 V, 13.8 V) with 5-μs (typ)
response time OR
– Adjustable overvoltage lockout (OVLO) with
1.2-μs (typ) response time
Output current limit level can be set with a single
external resistor. It is also possible to get an accurate
sense of the output load current by measuring the
voltage drop across the current limit resistor.
•
Overcurrent protection with load current monitor
output (ILM)
– Active current limit OR circuit breaker options
– Adjustable threshold with ±10% accuracy over
ILIM = 0.5 A to 6 A
Applications
with
particular
inrush
current
requirements can set the output slew rate with a
single external capacitor. Loads are protected from
input overvoltage conditions, either by clamping the
output to a safe fixed maximum voltage (pin
selectable), or by cutting off the output if input
exceeds an adjustable overvoltage threshold.
– Adjustable transient blanking timer
– Output load current monitor accuracy: ±15%
over IOUT = 0.5 A to 5.5 A
Fast-trip response for short-circuit protection
– 500-ns (typ) response time
– Adjustable (2 x ILIM) and fixed thresholds
Active High Enable input with adjustable
undervoltage lockout threshold (UVLO)
Adjustable output slew rate control (dVdt)
Overtemperature protection
•
•
The devices are available in a 2-mm x 2-mm, 10-pin
HotRod QFN package for improved thermal
performance and reduced system footprint.
•
•
•
The devices are characterized for operation over a
junction temperature range of –40°C to +125°C.
Digital outputs
– Priority power MUX control (AUXOFF) and
Fault indication (FLT) OR
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
– Power Good indication (PG) with adjustable
threshold (PGTH)
UL 2367 recognition (pending)
TPS25947xxRPW
QFN (10)
2 mm x 2 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
•
•
•
IEC 62368 CB certification (pending)
Small footprint: QFN 2 mm x 2 mm, 0.45-mm pitch
VOUT
VIN
= 2.7 to 23 V
IN
OUT
VLOGIC
COUT
2 Applications
EN/UVLO
TPS259470x
AUXOFF
FLT
•
•
•
•
•
•
Power MUX/ORing
Adapter Input Protection
USB PD port protection
Server/PC Motherboard/Add-on cards
Enterprise storage - RAID/HBA/SAN/eSSD
Monitors/Docks
OVLO
ITIMER dVdt
GND
ILM
RILM
CITIMER
CDVDT
Figure 3-1. Simplified Schematic
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change
Copyright © 2020 Texas Instruments Incorporated
Submit Document Feedback
1
without notice.
Product Folder Links: TPS25947
5秒后页面跳转
解析光耦仿真器：升级光耦合器技术的必要性
英伟达新一代Blackwell GPU过热问题致交付延迟
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
