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Power-Distribution Switches. TPS2557-Q1 Datasheet

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Power-Distribution Switches. TPS2557-Q1 Datasheet






TPS2557-Q1 Switches. Datasheet pdf. Equivalent




TPS2557-Q1 Switches. Datasheet pdf. Equivalent





Part

TPS2557-Q1

Description

Precision Adjustable Current-Limited Power-Distribution Switches



Feature


www.ti.com TPS2556-Q1, TPS2557-Q1 SLVSC 97B – MARCH 20T14P–SR2E5V5I6S-EQD1S ,ETPPTESM2B5E5R72-Q0210 SLVSC97B – MA RCH 2014 – REVISED SEPTEMBER 2020 TP S255x-Q1 Precision Automotive Adjustabl e Current-Limited Power-Distribution S witches 1 Features • AEC-Q100 Qualif ied – Device HBM ESD Classification L evel H2 – Device CDM ESD Classificati on Level C5 • Functional Safety-.
Manufacture

Texas Instruments

Datasheet
Download TPS2557-Q1 Datasheet


Texas Instruments TPS2557-Q1

TPS2557-Q1; Capable – Documentation available to a id functional safety system design • Meets USB current-limiting requirements • Adjustable current limit, 500 mA 5 A (typ.) • ±6.5% current-limit accuracy at 4.5 A • Fast short-circui t response – 3.5 μs (typ.) • 22-m high-side MOSFET • Operating range : 2.5 V to 6.5 V • 2-μA maximum stan dby supply current • Built-in soft-start • .


Texas Instruments TPS2557-Q1

15-kV and 8-kV system-level ESD capable • Safety-related certifications: – UL Recognized for UL 2367 – CB Certif ication for IEC 60950 – CB Certificat ion for IEC 62368 2 Application Automot ive USB Charging Ports 3 Description The TPS2556-Q1 and TPS2557-Q1 powerdist ribution switches are specialized for a utomotive applications which require pr ecision current limiting o.


Texas Instruments TPS2557-Q1

r capacity to handle heavy capacitive lo ads and short circuits. These devices o ffer a programmable currentlimit thresh old between 500 mA and 5 A (typical) vi a an external resistor. Control of the power-switch rise and fall times minimi zes current surges during turnon or tur noff. TPS2556-Q1 and TPS2557-Q1 device s limit the output current to a safe le vel by switching i.

Part

TPS2557-Q1

Description

Precision Adjustable Current-Limited Power-Distribution Switches



Feature


www.ti.com TPS2556-Q1, TPS2557-Q1 SLVSC 97B – MARCH 20T14P–SR2E5V5I6S-EQD1S ,ETPPTESM2B5E5R72-Q0210 SLVSC97B – MA RCH 2014 – REVISED SEPTEMBER 2020 TP S255x-Q1 Precision Automotive Adjustabl e Current-Limited Power-Distribution S witches 1 Features • AEC-Q100 Qualif ied – Device HBM ESD Classification L evel H2 – Device CDM ESD Classificati on Level C5 • Functional Safety-.
Manufacture

Texas Instruments

Datasheet
Download TPS2557-Q1 Datasheet




 TPS2557-Q1
www.ti.com
TPS2556-Q1, TPS2557-Q1
SLVSC97B – MARCH 20T14PSR2E5V5I6S-EQD1S,ETPPTESM2B5E5R72-Q0210
SLVSC97B – MARCH 2014 – REVISED SEPTEMBER 2020
TPS255x-Q1 Precision Automotive Adjustable Current-Limited Power-Distribution
Switches
1 Features
• AEC-Q100 Qualified
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C5
Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Meets USB current-limiting requirements
• Adjustable current limit, 500 mA – 5 A (typ.)
• ±6.5% current-limit accuracy at 4.5 A
• Fast short-circuit response – 3.5 μs (typ.)
• 22-mΩ high-side MOSFET
• Operating range: 2.5 V to 6.5 V
• 2-μA maximum standby supply current
• Built-in soft-start
• 15-kV and 8-kV system-level ESD capable
• Safety-related certifications:
– UL Recognized for UL 2367
– CB Certification for IEC 60950
– CB Certification for IEC 62368
2 Application
Automotive USB Charging Ports
3 Description
The TPS2556-Q1 and TPS2557-Q1 power-
distribution switches are specialized for automotive
applications which require precision current limiting or
capacity to handle heavy capacitive loads and short
circuits. These devices offer a programmable current-
limit threshold between 500 mA and 5 A (typical) via
an external resistor. Control of the power-switch rise
and fall times minimizes current surges during turnon
or turnoff.
TPS2556-Q1 and TPS2557-Q1 devices limit the
output current to a safe level by switching into a
constant-current mode when the output load exceeds
the current-limit threshold. The FAULT logic output
asserts low during overcurrent and overtemperature
conditions.
Use with the TPS2511-Q1 or TPS2513A-Q1 for a low-
loss, automotive-qualified, USB charging-port solution
capable of charging all of today's popular phones and
tablets.
Device Information
ORDER NUMBER
PACKAGE(1)
TPS2556QDRB
S-PVSON (8)
TPS2557QDRB
S-PVSON (8)
BODY SIZE
3 mm × 3 mm
3 mm × 3 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
DC to DC
Converter
or Controller
(LM25117-Q1,
TPS54340-Q1,
TPS54240-Q1,
TPS40170-Q1)
5 V OUT
0.1 μF
100 kΩ
Control Signal
COUT
IN
OUT
IN
OUT
TPS2556-Q1
TPS2557-Q1
FAULT
ILIM
RILIM
EN
GND
Thermal Pad
VIN
DM1
DP1
TPS2513A-Q1
DM2
GND
DP2
USB
Connector
VBUS
D–
D+
GND
CUSB
Recommend TPS2561A-Q1
for the Dual Port Solution
Typical Application as Power Switch of Single-Port Automotive USB Charge Port
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
Copyrighint t©el2le0c2t0uTael xparsoIpnesrtrtuymmeanttsteIrnscoarnpdoraottehder important disclaimers. PRODUCTION DATA.
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 TPS2557-Q1
TPS2556-Q1, TPS2557-Q1
SLVSC97B – MARCH 2014 – REVISED SEPTEMBER 2020
www.ti.com
Table of Contents
1 Features............................................................................1
2 Application....................................................................... 1
3 Description.......................................................................1
4 Revision History.............................................................. 2
5 Device Comparison Table...............................................3
6 Terminal Configuration and Functions..........................3
7 Specifications.................................................................. 3
7.1 Absolute Maximum Ratings........................................ 3
7.2 Handling Ratings.........................................................4
7.3 Recommended Operating Conditions.........................4
7.4 Thermal Information....................................................4
7.5 Electrical Characteristics.............................................5
7.6 Switching Characteristics............................................5
7.7 Typical Characteristics................................................ 6
8 Parameter Measurement Information............................ 7
9 Detailed Description........................................................8
9.1 Overview..................................................................... 8
9.2 Functional Block Diagram........................................... 9
9.3 Feature Description.....................................................9
9.4 Device Functional Modes..........................................10
10 Applications and Implementation.............................. 12
10.1 Application Information........................................... 12
10.2 Typical Application, Design for Current Limit.......... 12
11 Power Supply Recommendations..............................17
12 Layout...........................................................................18
12.1 Layout Guidelines................................................... 18
12.2 Layout Example...................................................... 18
13 Device and Documentation Support..........................19
13.1 Related Links.......................................................... 19
13.2 Trademarks............................................................. 19
13.3 Electrostatic Discharge Caution..............................19
13.4 Glossary..................................................................19
14 Mechanical, Packaging, and Orderable
Information.................................................................... 20
4 Revision History
Changes from Revision A (March 2014) to Revision B (September 2020)
Page
• Added functional safety link and safety-related certifications bullet to the Features section ............................. 1
• Updated the numbering format for tables, figures and cross-references throughout the document...................1
Changes from Revision * (March 2014) to Revision A (March 2014)
Page
• Changed part number in Description from TPS2511-Q to TPS2511-Q1............................................................ 1
• Changed CURRENT LIMIT values in Electrical Characteristics table ............................................................... 5
• Changed Equation 1 ........................................................................................................................................ 12
• Revised Figure 10-2 graph............................................................................................................................... 12
• Changed Equation 2 ........................................................................................................................................ 13
• Changed resistor value from 33.2 kΩ to 33.6 kΩ .............................................................................................13
• Changed Equation 3 ........................................................................................................................................ 13
• Changed Equation 4 ........................................................................................................................................ 14
• Changed current-limit threshold from 4 316 mA to 4 406 mA ..........................................................................14
• Changed values in Table 10-2 ......................................................................................................................... 14
2
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Copyright © 2020 Texas Instruments Incorporated




 TPS2557-Q1
www.ti.com
5 Device Comparison Table
DEVICE
TPS2556-Q1
TPS2557-Q1
TPS2561A-Q1
MAX. OPERATING
CURRENT (A)
5
5
2.5
OUTPUTS
1
1
2
6 Terminal Configuration and Functions
TPS2556-Q1, TPS2557-Q1
SLVSC97B – MARCH 2014 – REVISED SEPTEMBER 2020
ENABLES
Active-low
Active-high
Active-high
TYPICAL rDS(on) (mΩ)
22
22
44
GND 1
IN 2
IN 3
EN 4
Thermal
Pad
8 FAULT
7 OUT
6 OUT
5 ILIM
EN = Active-low for the TPS2556-Q1
EN = Active-high for the TPS2557-Q1
Figure 6-1. 8-Terminal S-PVSON With Thermal Pad DRB Package (Top View)
Terminal Functions
NAME
EN
EN
GND
IN
FAULT
OUT
ILIM
Thermal pad
TERMINAL
TPS2556-Q1
4
1
2, 3
8
6, 7
5
TPS2557-Q1
4
1
2, 3
8
6, 7
5
I/O
DESCRIPTION
I Enable input, logic low turns on power switch.
I Enable input, logic high turns on power switch.
– Ground connection; connect externally to PowerPAD.
I
Input voltage; connect a 0.1 μF or greater ceramic capacitor from
IN to GND as close to the IC as possible.
O
Active-low open-drain output, asserted during overcurrent or
overtemperature conditions.
O Power-switch output.
O
External resistor used to set current-limit threshold; recommended
20 kΩ ≤ R(ILIM) ≤ 187 kΩ.
Internally connected to GND; used to heat-sink the part to the
– circuit board traces. Connect therma pad to GND terminal
externally.
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range unless otherwise noted(1) (2)
Voltage range on IN, OUT, EN or EN, ILIM, FAULT
Voltage range from IN to OUT
I
Continuous output current
Continuous FAULT sink current
ILIM source current
TJ Maximum junction temperature
MIN
MAX(2) UNIT
–0.3
7
V
–7
7
V
Internally limited
25
mA
Internally limited
mA
–40
Internally limited
°C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under
Copyright © 2020 Texas Instruments Incorporated
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