TPS25947
SLVSFC9A – OCTOBER 2020 – REVISED MARCH 2021
TPS25947xx, 2.7 - 23 V, 5.5 A, 28-mΩ True Reverse Current Blocking eFuse with Input
Reverse Polarity Protection
1 Features
3 Description
•
Wide operating input voltage range: 2.7 V to 23 V
– 28-V absolute maximum
– Withstands negative voltages up to – 15 V
Integrated back-to-back FETs with low On-
Resistance: RON = 28.3 mΩ (typ)
Ideal diode operation with true reverse current
blocking
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 devices
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. The
devices use linear ORing based scheme to ensure
almost zero DC reverse current and emulate ideal
diode behavior with minimum forward voltage drop
and power dissipation.
•
•
•
Fast overvoltage protection
– Overvoltage clamp (OVC) with pin-selectable
threshold (3.8 V, 5.7 V, 13.8 V) and 5-μs (typ)
response time OR
– Adjustable overvoltage lockout (OVLO) with
1.2-μs (typ) response time
Overcurrent protection with load current monitor
output (ILM)
– Active current limit OR circuit-breaker options
– Adjustable threshold (ILIM) 0.5 A - 6 A
•
Output slew rate and inrush current can be adjusted
using 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. The
devices respond to output overload by actively limiting
the current or breaking the circuit. The output current
limit threshold as well as the transient overcurrent
blanking timer are user adjustable. The current limit
control pin also functions as an analog load current
monitor.
•
±10% accuracy for ILIM > 1 A
– Adjustable transient blanking timer (ITIMER) to
allow peak currents up to 2 x ILIM
– Output load current monitor accuracy: ±6%
(IOUT ≥ 1 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
Digital outputs
– Priority power MUX control (AUXOFF) and
Fault indication (FLT) OR
•
•
•
•
•
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.
– Power Good indication (PG) with adjustable
threshold (PGTH)
•
•
•
UL 2367 recognition (pending)
IEC 62368 CB certification (pending)
Small footprint: QFN 2 mm x 2 mm, 0.45-mm pitch
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
TPS25947xxRPW
QFN (10)
2 mm × 2 mm
2 Applications
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
•
•
•
•
•
•
Power MUX/ORing
Adapter input protection
USB PD protection - PC/Notebook/Monitors/docks
Server/PC motherboard/add-on cards
Enterprise storage - RAID/HBA/SAN/eSSD
Patient monitors
VOUT
VIN = 2.7 to 23 V
IN
OUT
VLOGIC
COUT
EN/UVLO
TPS259470x
AUXOFF
FLT
OVLO
ITIMER dVdt
GND
ILM
RILM
CITIMER
CDVDT
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. PRODUCTION DATA.
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，
