Texas Instruments TPS92551EVM Evaluation Module TPS92551EVM/NOPB TPS92551EVM/NOPB Scheda Tecnica
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TPS92551EVM/NOPB
SNVS805C – MAY 2012 – REVISED MAY 2013
450mA 23W Constant Current Buck LED Driver Micro-Module
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,
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FEATURES
DESCRIPTION
The TPS92551 Constant Current Buck LED Driver
2
•
Integrated All Power Components Including
Micro-Module drives maximum 450mA LED current
the Power Inductor
up to 16 LEDs in a single string (maximum 23W). It
•
Wide Input Voltage Range : 4.5V - 60V
integrates all the power components including the
•
Constant Switching Frequency at 800kHz
power inductor. The TPS92551 provides a full turn-
key, highly efficient solution for wide range of single
key, highly efficient solution for wide range of single
•
High Contrast Ratio (Minimum Dimming
string LED lighting applications with up to 95% power
Current Pulse width < 16µs)
efficiency. It accepts an input voltage ranging from
•
Drives up to 16 LEDs in series at 60V input
4.5V to 60V and delivers a 350mA LED current as
•
±3.5% Typical LED Current Accuracy
default. The LED current is adjustable from 300mA to
450mA by charging a single external resistor.
450mA by charging a single external resistor.
•
LED Current Adjustable from 300mA to 450mA
The module operates at constant switching frequency
•
Up to 95% Efficiency
(800kHz) with low Electro Magnetic Interference(EMI)
•
TPS92551 Modules can be Connected in
complying with EN55015 standard. The module has
Parallel for Higher Current Operation
fast control loop to realize fine LED current pulse
•
Input Under-Voltage Lock-Out (UVLO)
yielding 256–step PWM dimming resolution at 240Hz
for
for
general
lighting.
Protection
features
include
•
Compatible with Ceramic and Low ESR
thermal shutdown, input under-voltage lockout, LED
Capacitors
open-circuit
and
short-circuit
protections.
The
•
Low Electro Magnetic Interference (EMI)
TPS92551 Micro-Module is available in 7-pin PFM
Complies with EN55015 Standard
(1)
power package.
•
LED Open and Short Circuit Protections
•
Thermal Shutdown and RoHS Compliant
•
-40
˚
C to +125
˚
C Junction Temperature Range
APPLICATIONS
•
General Lighting, Desk Lamps
–
Cabinet Lamps
(1)
θ
JA
measured on a 1.705” x 3.0” four layer
board, with one ounce copper , thirty five
–
Decorative Lamps
12 mil thermal vias, no air flow, and 1W
–
Street Lamps
power dissipation.
•
Architecture Lighting, Recess Lights
Figure 1. 7-Pin PFM Package
10.16 x 13.77 x 4.57 mm (0.4 x 0.39 x 0.18 in)
–
Spot Lights
θ
JA
= 20°C/W,
θ
JC
= 1.9°C/W
(1)
–
Underwater Lights
RoHS Compliant
PACKAGE HIGHLIGHTS
•
7-Lead Easy-to-Use Package (Similar to TO-
263)
263)
•
Single Exposed Die Attach Pad for Enhanced
Thermal Performance
Thermal Performance
•
10.2 x 13.8 x 4.6 mm Package
(1)
EN55015, refer to
and
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2012–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.