TPS61193-Q1 Datasheet, PDF (1/35 Pages) Texas Instruments – High-Performance 3-Channel LED Driver

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TPS61193-Q1
SNVSAC7 – OCTOBER 2015
TPS61193-Q1 High-Performance 3-Channel LED Driver for Automotive Lighting
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: -40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• Input Voltage Operating Range 4.5 V to 40 V
• Three High-Precision Current Sinks
– Current Matching 1% (typical)
– Output Current up to 100 mA per Channel
– Outputs can be combined externally for higher
current per string
• High Dimming Ratio 10 000:1 at 200 Hz
• Integrated DC-DC for LED String Power
– Boost and SEPIC modes supported
– Output Voltage up to 45 V
– Switching Frequency 300 kHz to 2.2 MHz
• EMI Minimization
– DC-DC Synchronization Input
– Spread Spectrum Option
• Extensive Fault Detection Features
– Fault Output
– Input Voltage OVP and UVLO
– Open and Shorted LED Fault Detection
– Thermal Shutdown
• Minimum Number of External Components
VIN 4.5...40 V
Simplified Schematic
L1
CIN
D1
VOUT up to 45 V
COUT
SW
R2
R1
FB
VIN
BRIGHTNESS
EN
CLDO
RFSET
LDO
TPS61193-Q1 OUT1
OUT2
FSET
OUT3
SYNC
PWM
VDDIO/EN
FAULT
ISET
PGND GND PAD
CFB
Up to 100 mA/string
RISET
2 Applications
Automotive Infotainment, Instrument Clusters, and
Backlighting Systems
3 Description
The TPS61193-Q1 is an automotive high-efficiency,
low-EMI, easy-to-use LED driver with integrated DC-
DC converter. DC-DC converter supports both boost
and SEPIC mode operation. Device has three high-
precision current sinks that can provide high dimming
ratio brightness control with a PWM input signal.
The DC-DC converter has adaptive output voltage
control based on the LED current sink headroom
voltages. This feature minimizes the power
consumption by adjusting the voltage to the lowest
sufficient level in all conditions. DC-DC supports
spread spectrum for switching frequency and an
external synchronization with dedicated pin. The high
switching frequency allows the TPS61193-Q1 to
avoid disturbance for AM radio band.
The input voltage range for the TPS61193-Q1 is from
4.5 V to 40 V to support automotive stop/start and
load dump condition. The device supports PWM
brightness dimming ratio 10 000:1 for 200-Hz input
PWM frequency. The TPS61193-Q1 integrates
extensive fault detection features.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61193-Q1
HTSSOP (20)
6.50 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
space
space
100
95
90
85
80
75
70
65
60
55
50
0
System Efficiency
VIN=5V
VIN=8V
VIN=12V
VIN=16V
10 20 30 40 50 60 70 80 90 100
Brightness (%)
D001
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.