MPS MPQ2483DQ 55v, programmable frequency white led driver evaluation board aec-q100 qualified Datasheet

EVQ2483-Q-00A
The Future of Analog IC Technology
55V, Programmable Frequency
White LED Driver Evaluation Board
AEC-Q100 Qualified
DESCRIPTION
FEATURES
The MPQ2483 is a 55V, white LED driver
suitable for either step-down or inverting
step-up/down applications. It achieves 2.5A
peak current over a wide input supply range
with excellent load and line regulation. Current
mode operation provides fast transient
response and eases loop stabilization. Fault
condition protection includes thermal shutdown,
cycle-by-cycle peak current limiting, input over
voltage protection, open strings protection and
output short circuit protection.
•
The MPQ2483 incorporates both DC and PWM
dimming onto a single control pin. The separate
input reference ground pin allows for direct
enable and/or dimming control for a positive to
negative power conversion.
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•
•
•
•
•
•
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Unique Step-up/down Operation (BuckBoost Mode)
Wide 4.5V to 55V Operating Input Range for
Step-Down Applications (Buck Mode)
0.28Ω Internal Power MOSFET Switch
Adjustable Switching Frequency
Analog and PWM Dimming
0.198V Reference Voltage
5μA Shutdown Mode
No minimum LED required
Stable with Low ESR Output Ceramic
Capacitors
Cycle-by-Cycle Over Current Protection
Thermal Shutdown Protection
Open Strings Protection
Output Short Circuit Protection
Available in 10-Pin 3x3 QFN Package
The MPQ2483 is package in QFN10 (3 x 3)mm.
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MPQ2483-Q DEMO BOARDS
APPLICATIONS
Board number
Operating
Mode
Input
(V)
LED#
ILED
(mA)
EVQ2483-Q-00A
Buck-boost
12
1-4
700
EVQ2483-Q-00B
Buck
15-50
3
700
EVQ2483-Q-00C
Boost
12
6-9
500
•
•
•
General LED Illuminations
LCD Backlight Panels
Automotive Lighting
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithic
Power Systems, Inc.
EVQ2483-Q-00A EVALUATION BOARD
(L x W x H) 5cm x 4.5cm x 0.7cm
Board Number
MPS IC Number
EVQ2483-Q-00A
MPQ2483DQ
EVQ2483-Q-00A Rev.1.0
www.MonolithicPower.com
5/17/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
EVQ2483-Q-00A 55V, PROGRAMMABLE FREQUENCY WHITE LED DRIVER
EVALUATION BOARD SCHEMATIC
U1
1
VIN
C3
NS
R1
EN/DIM
0
INGND
VDD
R5
0
C6
100n
SW
EN/DIM
10
LED+
D1
B360
8
6
INGND
RSET
JP1
R3
75k
BST
9
MPQ2483
7
R2
100
3
OVP
FB
VSS
2
COMP
4
C4
1nF
C5
1nF
R4
0
5
JP2
R8
120k
open
(short for buck_boost)
R9
10k
LEDR6
1
D2
B160
R7
400m
short
(open for buck_boost)
EVQ2483-Q-00A BILL OF MATERIALS
Qty
2
Reference
Value
C1, C2
2.2μF
C3
NS
2
C4, C5
1nF
1
C6
0.1μF
1
C7
2.2μF
1
1
D1
D2
B360
B160
1
L1
10μH
3
1
1
1
1
1
1
1
R1, R4, R5
R2
R3
R6
R7
R8
R9
U1
0
100
75kΩ
1Ω
400mΩ
120kΩ
10k
MPQ2483
1
EN/DIM, LED+,
LED-,VIN, GND
JP1, JP2
Description
Ceramic Cap.,
10%, X7R
Package Manufacturer Manufacturer P/N
100V,
1210
muRata
GRM32ER72A225KA35L
Panasonica
GRM188R71H102KA01D
muRata
GRM188R71E104KA01D
muRata
GRM31CR71H225KA88L
Ceramic Cap., 50V,
0603
10%, X7R
Ceramic Cap., 50V,
0603
10%, X7R
Ceramic Cap., 50V,
1206
10%, X7R
Schottky Rect., 60V,3A
SMA
Schottky Rect., 60V,1A
SMA
Inductor, Rdc 28mΩ,
SMD
Isat 4A
Film Res., 5%
0603
Film Res., 5%
0603
Film Res., 1%
0603
Film Res.1%
0805
Film Res. 1%
0805
Film Res., 1%
0603
Film Res., 1%
0603
Power Led Driver
QFN10
Diodes Inc
Diodes Inc
Wurth
Elektronik
Yageo
Yageo
Yageo
ROYALOHM
ROYALOHM
Yageo
Yageo
MPS
B360A-13-F
B160-13-F
11 Pin Header, 2.54mm 2.54mm
Sullins
PCC11SAAN
744066100
RC0603JR-070RL
RC0603JR-07100RL
RC0603FR-0775KL
RC0805FR-071RL
0808F400LT5E
RC0603FR-07120KL
RC0603FR-0710KL
MPQ2483
NS
EVQ2483-Q-00A Rev.1.0
www.MonolithicPower.com
5/17/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
2
EVQ2483-Q-00A 55V, PROGRAMMABLE FREQUENCY WHITE LED DRIVER
EVB TEST RESULTS
Buck Boost Mode, L =10µH, FSW = 330kHz, 3LED, IOUT = 0.7A, TA = 25°C, unless otherwise noted.
95
Efficiency vs.
Input Voltage
Efficiency vs.
String Voltage
LED Line Regulation
10
100
90
6LED
8
95
4LED
4
90
85
2LED
-4
1LED
75
3LED
-2
80
2LED
4LED
2 1LED
0
85
3LED
80
6LED
6
75
-6
70
0
-10
-8
70
0
10
20
30
40
50
VIN VOLTAGE (V)
5
10
15
20
25
LED STRING VOLTAGE (V)
LED Regulation vs.
LED String Voltage
10
20
30
40
50
INPUT VOLTAGE (V)
Steady State
VOUT with Temp
VIN = 10V
8
0
VIN = 40V
6
4
VIN
10V/div.
VIN
25V/div.
VSW
20V/div.
VSW
20V/div.
VOUT
10V/div.
VOUT
10V/div.
IL
2A/div.
IL
2A/div.
2
0
-2
-4
-6
-8
0
5
10
15
20
25
LED STRING VOLTAGE (V)
Power Ramp Up
Power Ramp Down
VIN = 40V
VIN = 40V
VIN
25V/div.
VIN
25V/div.
VDIM
5V/div.
VSW
50V/div.
VSW
50V/div.
VSW
20V/div.
VOUT
10V/div.
IOUT
1A/div.
VOUT
10V/div.
IOUT
1A/div.
VOUT
10V/div.
IOUT
1A/div.
EVQ2483-Q-00A Rev.1.0
www.MonolithicPower.com
5/17/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
3
EVQ2483-Q-00A 55V, PROGRAMMABLE FREQUENCY WHITE LED DRIVER
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Layer
Figure 2—Bottom Layer
EVQ2483-Q-00A Rev.1.0
www.MonolithicPower.com
5/17/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
4
EVQ2483-Q-00A 55V, PROGRAMMABLE FREQUENCY WHITE LED DRIVER
QUICK START GUIDE
1. Connect the load (3LEDs or less) to the output. The Anode of the load to “LED+” and the
Cathode of the load to “LED -”.
2. Connect the input voltage source to the input VIN and INGND. The input voltage source should
be initialed 10V - 45V.
3. Connect the EN or dimming signal to EN/Dim pin.
For PWM dimming, connect the PWM signal to EN/Dim pin, the high level should be higher than
1.4V, the low level should be lower than 0.7V.
For analog dimming, connect a DC dimming signal in range of 0.7V~1.4V to EN/Dim pin.
4. Power up the input voltage source, and then power up the EN/Dim signal, the LEDs should be
ignited.
NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
EVQ2483-Q-00A Rev.1.0
www.MonolithicPower.com
5/17/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
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