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TPS259470ARPW Datasheet Preview

TPS259470ARPW Datasheet

True Reverse Current Blocking eFuse

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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
• 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
• 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
• ±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
– 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
2 Applications
• 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
3 Description
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.
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.
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.
PART NUMBER
TPS25947xxRPW
Device Information
PACKAGE(1)
BODY SIZE (NOM)
QFN (10)
2 mm × 2 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN = 2.7 to 23 V
IN
OUT
EN/UVLO
TPS259470x
AUXOFF
OVLO
FLT
ITIMER dVdt GND ILM
VLOGIC
CITIMER
CDVDT
RILM
VOUT
COUT
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.




etcTI

TPS259470ARPW Datasheet Preview

TPS259470ARPW Datasheet

True Reverse Current Blocking eFuse

No Preview Available !

TPS25947
SLVSFC9A – OCTOBER 2020 – REVISED MARCH 2021
www.ti.com
Table of Contents
1 Features............................................................................1
2 Applications..................................................................... 1
3 Description.......................................................................1
4 Revision History.............................................................. 2
5 Device Comparison Table...............................................3
6 Pin Configuration and Functions...................................4
7 Specifications.................................................................. 6
7.1 Absolute Maximum Ratings ....................................... 6
7.2 ESD Ratings .............................................................. 6
7.3 Recommended Operating Conditions ........................7
7.4 Thermal Information ...................................................7
7.5 Electrical Characteristics ............................................8
7.6 Timing Requirements ............................................... 10
7.7 Switching Characteristics ......................................... 11
7.8 Typical Characteristics.............................................. 12
8 Detailed Description......................................................19
8.1 Overview................................................................... 19
8.2 Functional Block Diagram......................................... 20
8.3 Feature Description...................................................23
8.4 Device Functional Modes..........................................37
9 Application and Implementation.................................. 38
9.1 Application Information............................................. 38
9.2 Single Device, Self-Controlled.................................. 38
9.3 Typical Application.................................................... 39
9.4 Active ORing............................................................. 42
9.5 Priority Power MUXing..............................................44
9.6 USB PD Port Protection............................................51
9.7 Parallel Operation..................................................... 53
9.8 Application Limitations.............................................. 56
10 Power Supply Recommendations..............................57
10.1 Transient Protection................................................ 57
10.2 Output Short-Circuit Measurements....................... 58
11 Layout........................................................................... 59
11.1 Layout Guidelines................................................... 59
11.2 Layout Example...................................................... 60
12 Device and Documentation Support..........................62
12.1 Documentation Support.......................................... 62
12.2 Receiving Notification of Documentation Updates..62
12.3 Support Resources................................................. 62
12.4 Trademarks............................................................. 62
12.5 Electrostatic Discharge Caution..............................62
12.6 Glossary..................................................................62
13 Mechanical, Packaging, and Orderable
Information.................................................................... 63
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision * (October 2020) to Revision A (March 2021)
Page
• Changed status from "Advance Information" to "Production Data".....................................................................1
2
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Product Folder Links: TPS25947
Copyright © 2021 Texas Instruments Incorporated


Part Number TPS259470ARPW
Description True Reverse Current Blocking eFuse
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