© Semiconductor Components Industries, LLC, 2012
May, 2012 − Rev. 1
1Publication Order Number:
EVBUM2111/D
NCP5030MTTXGEVB
NCP5030 High Power
Lighting Evaluation Board
User's Manual
Overview
The NCP5030 is a fixed frequency PWM buck−boost
converter optimized for constant current applications such
as driving high−powered white LED. The buck−boost is
implemented in an H−bridge topology and has an adaptive
architecture where it operates in one of three modes: boost,
buck−boost, or buck depending on the input and load
condition. This device has been designed with
high−efficiency for use in portable applications and is
capable of driving up to 1.2 A pulse current and 900 mA
continuous current into a high power LED for camera flash,
flashlight, torch and similar applications. To protect the
device cycle by cycle current limiting and a thermal
shutdown circuit have been incorporated as well as output
OVP (Over−Voltage Protection). The high switching
frequency allows the use of a low value 4.7 mH inductor and
ceramic capacitors. The NCP5030 is in a low profile and
efficient thermally enhanced 3 x 4 mm DFN package.
NCP5030 High Power Lighting Evaluation Board
This evaluation board demonstrates the overall NCP5030
capabilities and offers very easy current programming. The
output current is fully configurable via the usage of 4
external resistors and corresponding jumper headers. The
NCP5030 lighting evaluation board schematic is depicted in
Figure 2.
Figure 1. NCP5030MTTXGEVB Board Picture
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EVAL BOARD USER’S MANUAL
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2
SCHEMATIC
Figure 2. NCP5030 High Power Lighting Evaluation Board Schematic
200 mV
L101 4.7 mH
CTRL
PCA
VS
VOUT
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
J101
HEADER 2
J110
HEADER 2
J103
CONN RECT 2
PVIN
PVIN
J107
3*AA Bat Holder
J106
CONN RECT 3
J102
CONN RECT 3
Fixed Hole
H1
Fixed Hole
H2
Fixed Hole
H3
Fixed Hole
H4
J108
HEADER 6
AGND
PGND
FB
COMP
LX2
LX1
LX1
PVIN
VIN
C104
1 m
C105
10 m
TP103
TP104
J104
J111J105
D101 D102
C103
22 m
TP102
TP101
PVIN
R101
100 k
C101
330 p
C102
22 p
1
1
1
1
1
2
1
2123
1
2
2
1
R107
39 k R108
82 k
123 13
12
10
U101
456 7
11
12
8
9
1
2
1
2
1
LXCL−PWF1 Lambertian
VLF5014 4R7/RLF7030 4R7
11 2 1 13
2
1
3
4
5
6
J109
CONN RECT 5x2
NCP5030 DFN
6810 4 2
57931
GND
R102
R103
R104
R105
R106
0.51
0.51
0.51
1
2
+
−
Operation
L101 selection depends on the output current,
VLF5014A4R7M1R1 is recommended at output current
under 500 mA, and RLF7030T4R7M3R4 is recommended
when output current is larger than 700 mA.
The power supply of NCP5030 should be from 2.7 V to
5.5 V. Maximum input voltage is 7.0 V and maximum
continuous output current is 900 mA.
CAUTION:
1. Exceeding the maximum input voltage may
damage NCP5030 permanently!
2. Too long time duration at over output current
may decrease LED life time or even damage
LED!
Table 1. Input Power Connector
Symbol Descriptions
J101−1Positive terminal of external power supply
J101−2GND of external power supply
J107−1Positive terminal of 3*AA batteries in serial
J107−2GND of 3*AA batteries in serial
Table 2. Output Power Connector
J108−1/2 VOUT of NCP5030
J108−5/6 FB of NCP5030
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Table 3. Jumper Setup
Symbol Descriptions
J102−1/2 Peak current set to about 3 A, peak current and setting resistor selection can reference the datasheet of
NCP5030
J102−2/3 Peak current set to about 1.5 A, peak current and setting resistor selection can reference the datasheet of
NCP5030
J103 Short will connect CTRL to PVIN and enable NCP5030
J110 GND test jumper
J104 Must be connected to ensure NCP5030 work properly, can measure inductor current here, such as peak
current of inductor
J105 Select D101 as load of NCP5030, be careful if J111 or J108 is connected
J111 Select D102 as load of NCP5030, be careful if J105 or J108 is connected
J109 Output current setting, reference to table 5(Output current setting table)
Table 4. Test Points
TP101 CTRL and enable of NCP5030.
TP102 FB, feedback, reference voltage is 200 mV.
TP103 Switch LX1
TP104 Switch LX2
Current Setting Selection
The output is determined by the resistor or resistors
connected between FB pin and GND. R102 to R106 and
J109 are used for output current setting according to eq. 1:
Iout(A) +0.2
R(W)(eq. 1)
Where R is the total resistance between FB and GND,
J109 allows parallel connections of several resistors to select
output current.
Following is the output current setting table of J109
(1 = short connected; 0 = left open)
Table 5. Output Current Setting Table
PIN9−10 PIN7−8 PIN5−6 PIN3−4 PIN1−2Output Current (mA)
0 0 0 0 1 100
0 0 0 1 0 200
0 0 0 1 1 300
0 0 1 0 0 400
0 0 1 0 1 500
0 0 1 1 0 600
0 0 1 1 1 700
0 1 1 0 0 800
0 1 1 0 1 900
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Efficiency Test
Figure 3 and Figure 4 describe efficiency results in different conditions.
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
5.50
5.40
5.30
5.20
5.10
5.00
4.90
4.80
4.70
4.60
4.50
4.40
4.30
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.10
3.00
2.90
2.80
2.70
2.60
350 mA
500 mA
700 mA
900 mA
Figure 3. Efficiency vs. Input Voltage, Rpca = 82 KW, load = LXHL − PW09,
Inductor = VLF5014A4R7M1R1 for Iout = 350 mA, 500 mA and 700 mA, RLF7030T4R7M3R4 for Iout = 900 mA
Efficiency vs. VIN
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
5.50
5.40
5.30
5.20
5.10
5.00
4.90
4.80
4.70
4.60
4.50
4.40
4.30
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.10
3.00
2.90
2.80
2.70
2.60
VLF5014A4R7M1R1
RLF7030T4R7M3R4
Figure 4. Efficiency vs. Input Voltage @ Inductor, Iout = 900 mA,
Rpca = 82 KW, load = LXHL − PW09, Vf = 3.9 V
Efficiency vs. VIN
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Output Current Regulation
Figure 5 shows the relationship between output current regulation Rpca and input voltage. There may be a tradeoff between
output current and input current limit.
0.0
100.0
200.0
300.0
400.0
500.0
600.0
700.0
800.0
900.0
1000.0
5.50
5.40
5.30
5.20
5.10
5.00
4.90
4.80
4.70
4.60
4.50
4.40
4.30
4.20
4.10
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.10
3.00
2.90
2.80
2.70
2.60
Figure 5. Output Current Regulation vs. Input Voltage @ Rpca, Iout = 900 mA
Inductor = RLF7030T4R7M3R4; Load = LXHL − PW09, Vf = 3.9 V
Efficiency vs. VIN
Rpca = 82 KW
Rpca = 39 KW
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PCB LAYOUT
Figure 6. Assembly Layer
Figure 7. Top Layer Routing
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BILL OF MATERIALS
Table 6. BILL OF MATERIALS FOR THE NCP5030MTTXGEVB HIGH POWER LIGHTING EVALUATION BOARD
Designator
Qty Description Value
Tolerance
Footprint MFG
MFG Part
Number
Substitution
Allowed
ROHS
Compliant
C101 1 Ceramic chip capacitor 330 pF 5% 0603 TDK C1608C0G1H331J Yes Yes
C102 1 Ceramic chip capacitor 22 pF 5% 0603 TDK C1608C0G1H220J Yes Yes
C103 1 Ceramic chip capacitor 22 mF20% 0805 TDK C2012X5R0J226M Yes Yes
C104 1 Ceramic chip capacitor 1 mF20% 0603 TDK C1608X5R0J105M Yes Yes
C105 1 Ceramic chip capacitor 10 mF20% 0805 TDK C2012X5R0J106M Yes Yes
L101 1 Chip winding magnetic
shielded inductor
4.7 mH20% 4.5*4.7 mm TDK VLF5014AT-4R7M1R1 Yes Yes
6.8*7.3 mm RLF7030T-4R7M3R4
R101 1 Chip resistor 100 KW5% 0603 Std. Std. Yes Yes
R102 1 Chip resistor TBD (not
mounted)
NA 0805/1206 Std. NA NA NA
R103,
R104
2Chip resistor 0.51 W1%,1/4W 0805/1206 Std. Std. Yes Yes
R105 1 Chip resistor 1 W1%,1/8W 0805/1206 Std. Std. Yes Yes
R106 1 Chip resistor 2.2 W1%,1/8W 0805/1206 Std. Std. Yes Yes
R107 1 Chip resistor 39 KW5% 0603 Std. Std. Yes Yes
R108 1 Chip resistor 82 KW5% 0603 Std. Std. Yes Yes
TP101-
TP104
4PCB terminal 1 mm NA NA Standard
1mm
Std. Std. Yes Yes
U101 1 Buck−Boost driver for
high power flash LED
NA NA WDFN12,
3*4 mm
NCP5030MTTXG No Yes
ON Semiconductor
J101 1 Header X 2 NA NA SL5.08/2/90 SL5.08/2/90B Weidmüller Yes Yes
J102,
J106
2Header 3 pin, 0.1 inch
spacing
NA NA 0.100*3 Std. Std. Yes Yes
J103,
J104,
J105,
J111
4Header 2 pin, 0.1 inch
spacing
NA NA 0.100*2 Std. Std. Yes Yes
J107 1 3*AA Battery holder NA NA 1.84*2.25 mm MPD BH3AA−PC No Yes
J108 1 Header 6 NA NA 0.100*6 AMP 535676 No Yes
J109 1 Header 2*5,0.1 inch
spacing
NA NA 0.100*2*5 Std. Std. Yes Yes
J110 1 GND jumper
400 mil spacing
NA NA 0.400
spacing
D3082−B01 Harwin Yes Yes
D101 1 LXCL−PWT1 NA NA 2.0*1.6 mm Lumileds LXCL−PWT1 No Yes
D102 1 Lambertian LED
modules
LUXEON I
LUXEON III
NA Lambertian Lumileds LXHL−PW01
LXHL−PW09
Yes Yes
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TEST PROCEDURE
1. Visual inspection the board after solder, there
should be no short, redundant solder ball.
2. Measure the resistance of each pin of NCP5030 to
GND, there should be no short to GND (except pin
GND) or each other. Measure the forward and
backward resistance of D101/D102. Ensure solder
is good.
3. Short J104;
4. Short J103;
5. Short J106 2−3(power supply from J101);
6. Configure J102 in 2−3 position;
7. Short J105, open J111, J108;
8. Configure J109 in 100 mA position (pin1−2
shorted);
9. Configure power supply output voltage to 3.7 V.
10. Power off and connect power supply to J101;
11. Power on, check D101 is lighting;
12. Power off and Configure J109 in 200 mA position
(pin3−4 shorted);
13. Power on, check D101 is lighting;
14. Power off and Configure J109 in 400 mA position
(pin5−6 shorted);
15. Power on, check D101 is lighting;
16. Power off and Configure J109 in 400 mA position
(pin7−8 shorted);
17. Power on, check D101 is lighting;
18. Power off and configure J102 at 1−2 position;
19. Configure J109 in 100 mA position (pin1−2
shorted);
20. Power on, check D101 is lighting;
21. Power off, open J105, short J111 (if D102
mounted);
22. Power on, check D102 is lighting (if D102
mounted);
23. Power off, open J105, J111, connect J108 to
external LED or LED module (if there is);
24. Power on, check external LED or LED module is
lighting (if there is);
25. Power off;
26. Configure board default and connect jumpers
accordingly
•Place board in 300 mA output current
configuration:
•Place jumpers on J109 1−2(100 mA), 3−4(200
mA), 9−10(0 mA);
•Place a jumper on J102 2−3;
•Place jumpers on J103/J104;
•Place a jumper on J105 and make sure J111 is
open;
•Place a jumper on J106 2−3;
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
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associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
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