EVQ7200A-L-00B
42V, 1.2A, 410kHz, Synchronous LED Driver
Buck-Boost Mode Evaluation Board,
AEC-Q100 Qualified
DESCRIPTION
The EVQ7200A-L-00B is an evaluation board
designed to demonstrate the capabilities of the
MPQ7200A, a constant-current LED driver with
integrated power MOSFETs. It offers a very
compact solution to achieve 1.2A of continuous
output current (IOUT), with excellent load and line
regulation across a wide input supply range.
Constant frequency hysteretic control mode
provides extremely fast transient response
without loop compensation. The switching
frequency (fSW) is 410kHz in buck-boost mode
for
optimized
efficiency
and
thermal
performance.
The MPQ7200A is available in a QFN-19
(3mmx4mm) package with wettable flanks, and
is available in AEC-Q100 Grade 1.
The EVQ7200A-L-00B is a fully assembled and
tested buck-boost mode LED driver evaluation
board. It generates an LED current up to 1.2A
from a 6V to 20V input range.
PERFORMANCE SUMMARY
Specifications are at TA = 25°C, unless otherwise noted.
Parameters
Input voltage (VIN) range
Maximum output current (IOUT)
Typical efficiency
Peak efficiency
Switching frequency (fSW)
Conditions
VIN = 6V to 20V
VIN = 13.5V, 4 LEDs, IOUT = 1.2A
VIN = 13.5V, 4 LEDs, IOUT = 0.75A
Value
6V to 20V
1.2A
89.95%
91.06%
410kHz
EVALUATION BOARD
LxWxH (8.3cmx8.3cmx1.3cm)
Board Number
MPS IC Number
EVQ7200A-L-00B
MPQ7200AGLE-AEC1
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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© 2022 MPS. All Rights Reserved.
1
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
QUICK START GUIDE
-
V +
1. Preset the power supply between 6V and 20V, then turn off the power supply (see Figure 1). Note
that the input voltage (VEMI) plus output voltage (VOUT) should be below 40V.
VEMI = 6V to 20V
LED+
LED-
ILED Max to 1.2A
Figure 1: Measurement Equipment Set-Up
2. If longer cables (>0.5m total) are being used between the source and the evaluation board, install a
damping capacitor at the input terminals. This is especially critical when VEMI exceeds 24V.
3. Connect the power supply terminals to:
a. Positive (+): VEMI
b. Negative (-): GND
4. Connect the load terminals to:
a. Positive (+): VLED+
b. Negative (-): VLED5. After making the connections, turn on the power supply.
6. To use the enable (EN) function, apply a digital input to the EN/DIM pin. Drive EN above 2.5V to
turn the regulator on; drive EN below 1V to turn it off.
7. When two-step dimming is inactive (RDUTY = 4.87kΩ), an external 100Hz to 2kHz pulse-width
modulation (PWM) waveform can be applied to the EN/DIM pin.
8. To initiate two-step dimming, use the EN/DIM pin. Table 1 on page 3 shows the proposed resistor
(R3) in E96 series for different dimming duty cycles. When EN/DIM is high, the dimming duty cycle
is 100%; when EN/DIM is low, the dimming duty cycle percentage varies.
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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© 2022 MPS. All Rights Reserved.
2
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
QUICK START GUIDE (continued)
Table 1: Two-Step Dimming Duty vs. R3
Two-Step Dimming Duty
R3 (Ω)
15%
61900
14%
41200
13%
27400
12%
18200
11%
12100
10%
7870
Two-step dimming off
4870
9%
3090
8%
2050
7%
1370
6%
887
5%
576
9. The external resistor (R5) connected to the ISET pin sets the LED current (ILED). R5 can be
calculated using Equation (1):
R5
16
(kΩ)
ILED (A)
(1)
To get better ILED precision, Table 2 shows the recommended LED setting resistor values in buckboost mode when ILED is below 0.7A (see Figure 2).
Table 2: Resistor Selection when ILED ≤ 700mA in Buck-Boost Mode
ILED (A)
R5 (kΩ)
0.7
0.65
0.6
0.55
0.5
0.45
0.4
22.6
24.4
26.3
28.6
31.5
34.9
39.1
700
650
ILED (mA)
600
550
500
450
400
20.0
25.0
30.0
RISET (kΩ)
35.0
40.0
Figure 2: ILED vs. RISET when ILED ≤ 700mA in Buck-Boost Mode
EVQ7200A-L-00B Rev. 1.0
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1/26/2022
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© 2022 MPS. All Rights Reserved.
3
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVALUATION BOARD SCHEMATIC
L1
4.7µH
VIN
VEMI
GND
CIN7
CIN1
CIN2
CIN3
CIN4
CIN5
CIN6
22nF
50V
0603
22nF
50V
0603
22nF
50V
0603
22nF
50V
0603
10µF
50V
1210
10µF
50V
1210
CIN7 is for damping the input LC oscillation
47µF
63V
Input EMI Filter
C2
0.1µF
VIN
U1
4, 13
C1A
C1B
C1C
C1D
4.7µF
50V
1210
4.7µF
50V
1210
0.1µF
50V
0603
0.1µF
50V
0603
EN/DIM
R7 for EMC
L2
10µH
14
3
INGND
SW
8,9
EN/DIM
IREF
VLED+
Buck-Boos t Mode:
1.05kΩ < R6 < 9.09kΩ
17
PWM Dimming Frequency from 100Hz to 2kHz
R2
VIN
100kΩ
FAULT
R7
20Ω
MPQ7200A
R1
100kΩ
VIN
7
BST
IN
10
ISET
FAULT
C2A
C2B
C2C
4.7µF
25V
1206
4.7µF
25V
1206
1nF
50V
0603
C2D
1nF
50V
0603
L3
240nH
C2E
C2F
10nF
25V
0603
10nF
25V
0603
D1
VLED-
18
VIN
19
NTC
DUTY
GND
C3A
C3B
C3C
C3D
0.47µF
50V
1206
0.47µF
50V
1206
100nF
50V
0603
100nF
50V
0603
1
R4
10kΩ
VCC
NC
2
R3
4.87kΩ
R5
13.3kΩ
16
AGND PGND
5, 6,
15
11,12
R6
2.32kΩ
C1
10µF
16V
ILED (A)
1.2
0.7
0.5
0.4
R5 (kΩ)
13.3
22.6
31.5
39.1
When R3 = 4.87kΩ, two-step dimming mode is off and PWM dimming is available.
Figure 3: Evaluation Board Schematic
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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© 2022 MPS. All Rights Reserved.
4
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVQ7200A-L-00B BILL OF MATERIALS
Qty
Ref
Value
1
L1
4.7μH
1
L2
10μH
1
L3
240nH
4
CIN1,
CIN2,
CIN3, CIN4
22nF
2
CIN5, CIN6
10μF
1
CIN7
47μF
2
C1A, C1B
4.7μF
4
C1C, C1D,
C3C, C3D
0.1μF
2
C2A, C2B
4.7μF
2
C3A, C3B
0.47μF
2
C2C, C2D
1nF
2
C2E, C2F
10nF
1
C1
10μF
1
C2
0.1μF
2
1
1
1
1
1
1
1
R1, R2
R9
R4
R7
R5
R6
R3
D1
VEMI,
GND,
VLED+,
VLEDEN, GND,
DIM,
FAULT
100kΩ
10Ω
10kΩ
20Ω
13.3kΩ
2.32kΩ
4.87kΩ
40V
U1
MPQ7200A
4
4
1
Description
Inductor, 44.1mΩ
DCR, 4.6A
Inductor, 61mΩ DCR,
4A
Inductor, 27mΩ DCR,
3.8A
Ceramic capacitor,
50V, X7R
Package
Manufacturer
Manufacturer PN
SMD
Coilcraft
XAL4030-472MEB
SMD
Cyntec
VCMT063T-100MN5
SMD
Cyntec
VCUW20161B-R24MS5-89
0603
TDK
C1608X7R1H223K
1210
Murata
GRM32ER71H106KA8
SMD
Panasonic
EEHZC1J470P
1210
Murata
GRM32ER71H475KA8
0603
Murata
GRM188R71H104KA93D
1206
TDK
C3216X7R1E475M
1206
TDK
C3216X7R1H474K
0603
Murata
GRM1885C1H02JAC
0603
Wurth
885012206065
0603
Murata
GRM188Z71A106KA73D
Ceramic capacitor,
50V, X7R
Electrolytic capacitor,
63V
Ceramic capacitor,
50V, X7R
Ceramic capacitor,
50V, X7R
Ceramic capacitor,
25V, X7R
Ceramic capacitor,
50V, X7R
Ceramic capacitor,
50V, C0G
Ceramic capacitor,
25V, X7R
Ceramic capacitor,
10V, X7R
Ceramic capacitor,
16V, X7R
Film resistor, 5%
Film resistor, 1%
Film resistor, 1%
Film resistor, 1%
Film resistor, 1%
Film resistor, 1%
Film resistor, 1%
Schottky diode, 1A
0603
Murata
GRM188R71C104KA01D
0603
0604
0603
0402
0603
0603
0603
SMA
Yageo
Yageo
Yageo
Yageo
Yageo
Yageo
Yageo
Diodes, Inc.
RC0603JR-07100KL
RC0603FR-0710RL
RC0603FR-0710KL
RC0402FR-0720RL
RC0603FR-0713K3L
RC0603FR-072K32L
RC0603FR-074K87L
B140
2mm
Golden pin
DIP
Custom
1mm
Golden pin
DIP
Custom
QFN-19
Buck-boost regulator,
AEC-Q100
(3mmx4mm)
MPS
MPQ7200AGLE-AEC1
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2022 MPS. All Rights Reserved.
5
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
CISPR25 Class 5 Peak Conducted
Emissions
CISPR25 Class 5 Average Conducted
Emissions
150kHz to 108MHz
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
150kHz to 108MHz
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
NOISE FLOOR
Frequency (MHz)
1
0.1
108
10
NOISE FLOOR
108
10
CISPR25 Class 5 Average Radiated
Emissions
150kHz to 30MHz
150kHz to 30MHz
60
60
55
55
CISPR25 CLASS 5 LIMITS
50
50
AVERAGE RADIATED EMI (dBµV/m)
45
40
35
30
25
20
15
10
5
NOISE FLOOR
0
45
40
35
25
20
15
10
5
0
-5
-10
-10
-15
-15
Frequency (MHz)
0.1
10
30
CISPR25 CLASS 5 LIMITS
30
-5
NOISE FLOOR
0.1
1
Horizontal, 30MHz to 200MHz
30
10
Horizontal, 30MHz to 200MHz
55
55
HORIZONTAL POLARIZATION
50
50
CISPR25 CLASS 5 LIMITS
AVERAGE RADIATED EMI (dBµV/m)
45
Frequency (MHz)
CISPR25 Class 5 Average Radiated
Emissions
CISPR25 Class 5 Peak Radiated
Emissions
PEAK RADIATED EMI (dBµV/m)
Frequency (MHz)
1
0.1
CISPR25 Class 5 Peak Radiated
Emissions
PEAK RADIATED EMI (dBµV/m)
CISPR25 CLASS 5 LIMITS
AVERAGE CONDUCTED EMI (dBµV)
PEAK CONDUCTED EMI (dBµV)
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
NOISE FLOOR
5
HORIZONTAL POLARIZATION
45
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0 NOISE FLOOR
-5
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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© 2022 MPS. All Rights Reserved.
160
170
180
190
200
6
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
CISPR25 Class 5 Peak Radiated
Emissions
CISPR25 Class 5 Average Radiated
Emissions
Vertical, 30MHz to 200MHz
Vertical, 30MHz to 200MHz
55
55
VERTICAL POLARIZATION
50
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
NOISE FLOOR
5
45
40
35
30
25
15
10
0 NOISE FLOOR
-5
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
30
CISPR25 Class 5 Peak Radiated
Emissions
Horizontal, 200MHz to 1GHz
HORIZONTAL POLARIZATION
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
HORIZONTAL POLARIZATION
50
45
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
60
Horizontal, 200MHz to 1GHz
45
CISPR25 CLASS 5 LIMITS
35
30
25
20
15
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
NOISE FLOOR
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
CISPR25 Class 5 Average Radiated
Emissions
CISPR25 Class 5 Peak Radiated
Emissions
Vertical, 200MHz to 1GHz
Vertical, 200MHz to 1GHz
55
55
VERTICAL POLARIZATION
50
VERTICAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
45
PEAK RADIATED EMI (dBµV/m)
50
55
50
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
40
CISPR25 Class 5 Average Radiated
Emissions
55
10
CISPR25 CLASS 5 LIMITS
20
5
0
40
VERTICAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
45
NOISE FLOOR
5
45
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
NOISE FLOOR
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
200
300
400
500
600
Frequency (MHz)
700
800
EVQ7200A-L-00B Rev. 1.0
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1/26/2022
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900
1000
7
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted. (1)
Efficiency vs. Input Voltage vs.
Power Loss
90
4.0
3.0
92
3.5
2.5
88
2.0
ILED = 1.2A
ILED = 1.0A
ILED = 0.75A
86
1.5
84
1.0
82
0.5
Power_Loss
80
8
10
12
14
16
18
INPUT VOLTAGE (V)
86
82
1.0
8
86
84
92
1.8
90
1.2
0.9
0.6
82
80
0.3
Power_Loss
78
8
10
12
14
16
18
INPUT VOLTAGE (V)
20
15
ILED = 1.2A
ILED = 1.0A
ILED = 0.75A
0
8
10
12
14
16
18
INPUT VOLTAGE (V)
2.1
88
1.8
1.5
ILED = 0.4A
ILED = 0.5A
ILED = 0.6A
86
84
1.2
0.9
82
0.6
Power_Loss
80
0.3
0
10
12
14
16
18
INPUT VOLTAGE (V)
20
Case Temperature Rise vs.
Input Voltage
25
5
0.0
20
Efficiency
8
20
3 LEDs (VLED = 9V), L = 10µH
10
12
14
16
18
INPUT VOLTAGE (V)
4 LEDs (VLED = 12V), ILED = 0.6A,
L = 15µH, ILED = 0.4A/0.5A, L = 22μH
Case Temperature Rise vs.
Input Voltage
30
10
78
0
20
CASE TEMPERATURE RISE (°C)
CASE TEMPERATURE RISE (°C)
2.1
EFFICIENCY (%)
ILED = 0.4A
ILED = 0.5A
ILED = 0.6A
0.5
Power_Loss
Efficiency vs. Input Voltage vs.
Power Loss
1.5
88
2.0
1.5
78
POWER LOSS (W)
EFFICIENCY (%)
90
2.5
84
80
0.0
Efficiency
ILED = 1.2A
ILED = 1.0A
ILED = 0.75A
88
Efficiency vs. Input Voltage vs.
Power Loss
92
3.0
90
20
3 LEDs (VLED = 9V), ILED = 0.6A,
L = 15µH, ILED = 0.4A/0.5A, L = 22μH
Efficiency
POWER LOSS (W)
92
3.5
POWER LOSS (W)
Efficiency
4 LEDs (VLED = 12V), ILED = 1.2A/1A,
94 L = 10µH, ILED = 0.75A, L = 15μH
EFFICIENCY (%)
3 LEDs (VLED = 9V), ILED = 1.2A/1A,
L = 10µH, ILED = 0.75A, L = 15μH
POWER LOSS (W)
EFFICIENCY (%)
94
Efficiency vs. Input Voltage vs.
Power Loss
40
4 LEDs (VLED = 12V), L = 10µH
35
30
25
20
15
ILED = 1.2A
ILED = 1.0A
ILED = 0.75A
10
5
0
8
10
12
14
16
18
INPUT VOLTAGE (V)
20
Note:
1)
The inductor details about the efficiency curves follow: L = 15μH (XAL5050-153MEB), L = 22μH (XAL5050-223MEB).
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2022 MPS. All Rights Reserved.
8
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
Steady State
Start-Up through VIN
ILED = 1.2A
ILED = 1.2A
R1: VIN
10V/div.
CH2:
VLED+ - VLED-
CH3: ILED
CH2:
VLED+ - VLEDCH4: IL
CH3: ILED
CH4: IL
CH1: VSW
CH1: VSW
Shutdown through VIN
Start-Up through EN
ILED = 1.2A
ILED = 1.2A
R1: VEN/DIM
2V/div.
CH2:
VLED+ - VLED-
R1: VIN
10V/div.
CH2:
VLED+ - VLEDCH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
R1: VEN/DIM
2V/div.
Shutdown through EN
PWM Dimming Steady State
ILED = 1.2A
Dimming frequency = 100Hz
CH2:
VEN/DIM
CH2:
VLED+ - VLED-
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2022 MPS. All Rights Reserved.
9
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
PWM Dimming Steady State
PWM Dimming
Dimming frequency = 2kHz
Start-up through VIN
CH2: VIN
CH2:
VEN/DIM
CH1: VEN/DIM
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
R1: VSW
10V/div.
CH1: VSW
PWM Dimming
Two-Step Dimming
Shutdown through VIN
Steady state
CH2: VIN
CH2:
VLED+ - VLEDCH4: IL
CH1:
VEN/DIM
CH3: ILED
CH3: ILED
CH4: IL
R1: VSW
10V/div.
CH2: VIN
CH1: VSW
Two-Step Dimming
Two-Step Dimming
Start-up through VIN
Shutdown through VIN
CH2: VIN
CH4: IL
CH4: IL
CH3: ILED
CH3: ILED
CH1: VSW
CH1: VSW
EVQ7200A-L-00B Rev. 1.0
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EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
No Dimming
No Dimming
LED open during VIN start-up
LED open entry
R1: VFAULT
10V/div.
CH3: VIN
CH2:
VLED+ -VLEDCH3: ILED
CH2: VFAULT
CH4: IL
CH4: IL
CH1: VSW
VSW
PWM Dimming
PWM Dimming
LED open during VIN start-up
LED open entry
CH2:
FAULT
CH3: VIN
CH2:
FAULT
CH1:
VLED+ -VLEDCH4: IL
CH1:
VLED+ - VLEDCH3: ILED
CH4: IL
R1: VSW
20V/div.
R1: VSW
20V/div.
CH3: VIN
Two-Step Dimming
Two-Step Dimming
LED open during VIN start-up
LED open entry
CH2:
VFAULT
CH4: IL
CH2: VFAULT
CH4: IL
CH1:VSW
CH3: ILED
CH1:
VLED+ - VLEDR1: VSW
20V/div.
EVQ7200A-L-00B Rev. 1.0
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1/26/2022
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EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
No Dimming
No Dimming
LED+ short to LED- during VIN start-up
LED+ short to LED- entry
CH2: VFAULT
CH3: VIN
CH3: ILED
CH2:
VFAULT
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
PWM Dimming
PWM Dimming
LED+ short to LED- during VIN start-up
LED+ short to LED- entry
CH3: VIN
CH2: VFAULT
CH2: VFAULT
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
CH3: VIN
Two-Step Dimming
Two-Step Dimming
LED+ short to LED- during VIN start-up
LED+ short to LED- entry
CH2:
VLED+ -VLEDCH3: ILED
CH2: VFAULT
CH4: IL
CH1: VSW
CH4: IL
CH1: VSW
EVQ7200A-L-00B Rev. 1.0
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1/26/2022
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12
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
IREF Short before VIN Start-Up
IREF Open before VIN Start-Up
CH3: VIN
CH3: VIN
CH2: VFAULT
CH2: VFAULT
CH4: VIREF
CH4: VIREF
CH1: VSW
CH1: VSW
IREF Short after VIN Start-Up
IREF Open after VIN Start-Up
CH2: VFAULT
CH2: VFAULT
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
IREF Short after VIN Start-Up
IREF Open after VIN Start-Up
PWM dimming
PWM dimming
CH2: VFAULT
CH2: VFAULT
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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© 2022 MPS. All Rights Reserved.
13
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
ISET Short before VIN Start-Up
ISET Open before VIN Start-Up
CH3: VIN
CH3: VIN
CH2:
VFAULT
CH4: VISET
CH2: VFAULT
CH4: VISET
CH1: VSW
CH1: VSW
ISET Short after VIN Start-Up
ISET Open after VIN Start-Up
CH2: VFAULT
CH2: VFAULT
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
ISET Short after VIN Start-Up
ISET Open after VIN Start-Up
PWM dimming
PWM dimming
CH3: ILED
CH2:
VFAULT
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
CH2: VFAULT
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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© 2022 MPS. All Rights Reserved.
14
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
EVB TEST RESULTS (continued)
Performance curves and waveforms are tested on the evaluation board, VIN = 13.5V, 4 LEDs in
series (VLED = 12V), fSW = 410kHz, L = 10μH, TA = 25°C, unless otherwise noted.
IDUTY Short before VIN Start-Up
IDUTY Open before VIN Start-Up
CH3: VIN
CH3: VIN
CH2: VFAULT
CH2: VFAULT
CH4: VDUTY
CH4: VDUTY
CH1: VSW
CH1: VSW
FAULT Short during VIN Start-Up
FAULT Short after VIN Start-Up
CH2: VFAULT
CH3: VIN
CH3: ILED
CH2: VFAULT
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
False Mode Detection during VIN
Start-Up
CH3: VIN
CH2: VFAULT
CH4: IL
CH1: VSW
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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15
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
PCB LAYOUT
Figure 4: Top Silk and Top Layer
Figure 5: Mid-Layer 1
Figure 6: Mid-Layer 2
Figure 7: Bottom Layer and Bottom Silk
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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16
EVQ7200A-L-00B – 1.2A, BUCK-BOOST LED DRIVER EVAL BOARD, AEC-Q100
REVISION HISTORY
Revision #
1.0
Revision Date
1/26/2022
Description
Initial Release
Pages Updated
-
Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications.
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.
EVQ7200A-L-00B Rev. 1.0
MonolithicPower.com
1/26/2022
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