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| TPS2549-Q1 Datasheet, PDF (1/43 Pages) Texas Instruments – Automotive USB Charging Port Controller | |||
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TPS2549-Q1
SLUSCE3A â OCTOBER 2015 â REVISED OCTOBER 2015
TPS2549-Q1 Automotive USB Charging Port Controller and Power Switch With Cable
Compensation
1 Features
â¢1 AEC-Q100 Qualified With the Following Results:
â Device HBM ESD Classification Level H2
â Device CDM ESD Classification Level C5
⢠4.5-V to 6.5-V Operating Range
⢠47-mΩ (typ.) High-Side MOSFET
⢠3-A Maximum Continuous Output Current
⢠±5% CS Output for Cable Compensation
⢠CDP Mode per USB Battery Charging
Specification 1.2
⢠Automatic DCP Modes Selection:
â Shorted Mode per BC1.2 and YD/T 1591-2009
â 2.7-V Divider 3 Mode
â 1.2-V Mode
⢠D+ and Dâ Client Mode for System Update
⢠D+ and Dâ Short-to-VBUS Protection
⢠D+ and Dâ ±8-kV Contact and ±15-kV Air
Discharge ESD Rating (IEC 61000-4-2)
⢠â40°C to 125°C Junction Operating Temperature
⢠16-Pin QFN (3-mm à 3-mm) Package
2 Applications
⢠Automotive USB Ports (Host and Hubs)
⢠Automotive Infotainment System
3 Description
The TPS2549-Q1 device is a USB charging port
controller and power switch with a current-sense
output that is able to control an upstream supply. This
allows it to maintain 5 V at the USB port even with
heavy
heavy charging currents. This is important in systems
with long USB cables where significant voltage drops
can occur while fast-charging portable devices.
The TP2549-Q1 47-mΩ power switch has two
selectable, programmable current limits that support
port power management by providing a lower current
limit that can be used when adjacent ports are
experiencing heavy loads. This is important in
systems with multiple ports and an upstream supply
unable to provide full current to all ports
simultaneously.
The DCP_Auto scheme detects and selects the
proper D+ and Dâ settings to communicate with the
attached device, so that it can fast-charge at full
current. The integrated CDP detection enables up to
1.5-A fast charging of most portable devices with
simultaneous data communication.
The unique client-mode feature allows software
updates to client devices, but avoids power conflicts
by turning off the internal power switch while keeping
the data line connection.
Additionally, the TPS2549-Q1 device integrates short-
to-VBUS protection for D+ and Dâ to prevent damage
when D+ and/or Dâ unexpectedly short to VBUS. To
save space in the application, the TPS2549-Q1
device also integrates ESD protection to pass
IEC61000-4-2 without external circuitry on D+ and
Dâ.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS2549-Q1
WQFN (16)
3.00 mm à 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
V(BAT)
5V
Voltage
Regulator
LMR14030
LM53603-Q1
LM25117-Q1
TPS54340-Q1
FB
GND
R(FA)
R(FB)
R(G)
Simplified Schematic
4.5 V to 6.5 V
0.1 µF
C(COMP)
R(FAULT)
R(STATUS)
FAULT
STATUS
Power S witch EN
Mode Select I/O
IN
OUT
TPS2549-Q1
FAULT
STATUS
CS
EN
CTL1
CTL2
CTL3
DM_IN
DP_IN
GND
ILIM_LO
ILIM_HI
DM_OUT
DP_OUT
C(OUT)
R(CABLE1)
R(CABLE2)
To Host R_HI
Controller
R_LO
1
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.
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