MPQ7220
6-Channel, Max 100mA/Ch
Boost LED Driver,
AEC-Q100 Qualified
DESCRIPTION
The MPQ7220 is a boost converter with six
channel current sources. It is designed for
driving automotive tail lights.
The MPQ7220 uses peak current mode as its
PWM control architecture. The switching
frequency can be programmed by a resistor. It
independently regulates the current in each
LED string to the value set by an external
current-setting resistor.
The device applies six internal current sources,
one in each LED string terminal to achieve a
current balance with 2.5% current regulation
accuracy between strings. The low headroom
voltage for LED regulation and on resistance of
switching MOSFETs allows for high efficiency.
The MPQ7220 has rich protection modes to
guarantee safe operation. Protection modes
include OCP (over-current protection), OVP
(over-voltage
protection),
OTP
(overtemperature protection), and LED string short
and open protection. The LED current
decreases at high temperatures.
The MPQ7220 is available in QFN-24
(4mmx4mm) and TSSOP28-EP packages.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
3.5V to 36V Input Voltage Range
Six Channels with Max 100mA per
Channel
Internal 100mΩ, 50V MOSFET
Programmable Up to 2.2MHz fSW
External Sync SW Function
PWM Dimming (Dimming Frequency from
100Hz to 20kHz)
Excellent EMI Performance, Spread
Spectrum
Disconnect VOUT from VIN
2.5% Current Matching
Cycle-by-Cycle Current Limiting
Programmable LED Short Threshold
Programmable OVP Threshold
LED Current Auto-Decrement at High
Temperatures
LED Short/Open, OTP, OCP, Inductor
Short Protection
Fault Indicator Signal Output
Available in QFN-24 (4mmx4mm) and
TSSOP28-EP Packages
AEC-Q100 Grade 1
APPLICATIONS
•
Automotive Tail Lights
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.
For MPS green status, please visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
MPQ7220 Rev. 1.1
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11/3/2022
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© 2022 MPS. All Rights Reserved.
1
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL APPLICATION
L1
D1
VOUT
VIN
C1
C2
GND
R3
FREQ/SYNC
R1
EN
LED6
ISET
FF
COMP
AGND
C4
String 6
String 5
String 4
String 3
String 2
String 1
LED1
MPQ7220
EN
OVP
SW
PGND
R4
LED2
LED3
LED4
LED5
FSP
STH
SD
DIM
PWM
VCC
VIN
C3
R2
R5
MPQ7220 Rev. 1.1
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11/3/2022
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© 2022 MPS. All Rights Reserved.
2
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
ORDERING INFORMATION
Part Number*
Package
Top Marking
MSL Rating**
MPQ7220GR-AEC1
MPQ7220GF-AEC1
QFN-24 (4mmx4mm)
TSSOP28-EP
See Below
See Below
Level 1
Level 2a
* For Tape & Reel, add suffix -Z (e.g. MPQ7220GR-AEC1-Z).
** Moisture Sensitivity Level Rating.
TOP MARKING (MPQ7220GF-AEC1)
MPS: MPS prefix
YY: Year code
WW: Week code
MP7220: Part number
LLLLLLLLL: Lot number
TOP MARKING (MPQ7220GR-AEC1)
MPS: MPS prefix
Y: Year code
WW: Week code
MP7220: Part number
LLLLLL: Lot number
MPQ7220 Rev. 1.1
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© 2022 MPS. All Rights Reserved.
3
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
PACKAGE REFERENCE
TOP VIEW
OVP
1
DIM
SD
19
20 STH
21 FSP
22 VCC
SD
23
24
VIN
TOP VIEW
18
SW
NC
2
17
PGND
FREQ/SYNC
3
16
LED1
EN
4
15
LED2
AGND
5
14
LED3
6
LED4
LED5 12
LED6 11
AGND 10
8
FF
ISET 9
7
13
COMP
AGND
Exposed Pad
QFN-24 (4mmx4mm)
1
28 VCC
NC
2
27 FSP
VIN
3
26 STH
NC
4
25 OVP
DIM
5
24 NC
NC
6
FREQ
/SYNC
7
23 SW
Exposed Pad
22 NC
8
21 PGND
AGND
9
20 LED1
AGND
10
19 LED2
COMP
11
18 LED3
FF
12
17 LED4
ISET
13
16 LED5
AGND
14
15 LED6
EN
TSSOP28-EP
PIN FUNCTIONS
QFN24
Pin #
TSSOP28EP Pin #
Name
1
5
DIM
DIM signal input. Apply a PWM signal on DIM for brightness control.
Pulled low internally. A 100Hz to 20kHz PWM signal is recommended.
Pull this pin high if the dimming function not used.
2
2, 4, 6, 22,
24
NC
Not connected.
3
7
4
8
EN
7
11
COMP
8
12
FF
9
13
ISET
5, 6, 10
11
12
13
14
9, 10, 14
15
16
17
18
AGND
LED6
LED5
LED4
LED3
IC enable pin. Pull this pin to high enable the IC. Pull this pin low to force
the IC to enter shutdown mode.
Compensation pin.
Fault flag pin. Open drain during normal operation, pulled low in any fault
mode. Float FF if not used.
LED current setting. Tie a current-setting resistor from this pin to ground
to program the current in each LED string.
Analog ground.
LED string 6 current input. Connect the LED string 6 cathode to this pin.
LED string 5 current input. Connect the LED string 5 cathode to this pin.
LED string 4 current input. Connect the LED string 4 cathode to this pin.
LED string 3 current input. Connect the LED string 3 cathode to this pin.
15
19
LED2
LED string 2 current input. Connect the LED string 2 cathode to this pin.
Description
Switching frequency setting and SYNC pin. Connect a resistor
FREQ/SYNC between this pin and GND to set the converter’s switching frequency. Or
connect an external clock to sync the boost switching frequency.
MPQ7220 Rev. 1.1
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© 2022 MPS. All Rights Reserved.
4
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
PIN FUNCTIONS (continued)
QFN24
Pin #
TSSOP28EP Pin #
Name
16
20
LED1
17
21
PGND
18
23
SW
19
25
OVP
20
26
STH
21
27
FSP
22
28
VCC
23
1
SD
24
3
VIN
Exposed
pad
Exposed
pad
Exposed
pad
Description
LED string 1 current input. Connect the LED string 1 cathode to this
pin.
Step-up converter power ground.
Drain for the internal low-side MOSFET switch. Connect the power
inductor to SW.
Over-voltage protection pin. Use a voltage divider to program the
OVP threshold (see the Application Information section on page 20). Do
not float this pin.
Short LED protection threshold set pin. An 18µA current source flows
out of this pin. Connect a resistor from STH to GND to set the protection
threshold. The short protection threshold is 5V if this pin is floated.
Switching frequency spread spectrum pin. An 18µA current source
flows out of this pin. Connect a resistor from FSP to GND to set the
voltage. If FSP < 0.4V, the jitter frequency is 1/20 of the central
frequency. If FSP = 0.45V to 1.4V, the jitter frequency is 1/32 of the
central frequency. If FSP > 1.4V or is floated, the frequency spread
spectrum is disabled.
5V LDO output pin. VCC provides power for the internal logic and gate
driver. Place a ceramic capacitor as close as possible to this pin to
reduce noise.
External disconnect PMOS gate drive pin. Turn off the external PMOS
in a fault condition. Float this pin if not used.
Power supply input. VIN supplies the power to the IC.
Exposed pad. It has no internal electrical connection to AGND and
PGND. Connect exposed pad to external GND plane on board for optimal
thermal performance.
MPQ7220 Rev. 1.1
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11/3/2022
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
θJA
θJC
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
VIN .................................................-0.3V to +42V
VSW, VLED1 to VLED6.........................-0.5V to +50V
VSD ................................................ VIN - 6V to VIN
All other pins ................................-0.3V to +6.5V
Junction temperature ................................150°C
Lead temperature .....................................260°C
Storage temperature.................-65°C to +150°C
Continuous power dissipation (TA = 25°C) (2)
QFN-24 (4mmx4mm) ............................... 2.97W
TSSOP28-EP ............................................. 3.9W
QFN-24 (4mmx4mm)
JESD51-7 (4) …......…......….......42 …….9..…°C/W
EVQ7220-R-00A (5) ..…......…...47……..8..…°C/W
TSSOP28-EP
JESD51-7 (4) ….......….......….....32……..6..…°C/W
EVQ7220-F-00A (5) ..…......……44 …….7..…°C/W
Electrostatic Discharge (ESD)
HBM (human body model)
LED1-6 .......................................................±7kV
All other pins ..............................................±2kV
CDM (charged device model) ................. ±750V
Recommended Operating Conditions
Supply voltage (VIN) ......................... 3.5V to 36V
Operating junction temp (TJ) -40°C to +125°C (3)
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX) - TA) / θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) Operation devices at junction temperature up to 150°C
is possible; contact MPS for details.
4) Measured on JESD51-7, 4-layer PCB.
5) Measured on MPS standard EVB of MPQ7220, 2-layer, 1oz.
PCB.
MPQ7220 Rev. 1.1
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© 2022 MPS. All Rights Reserved.
6
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
ELECTRICAL CHARACTERISTICS
VIN = 12V, VEN = 2V, TJ = -40°C to +125°C, typical values at TJ = 25°C, unless otherwise noted.
Parameter
Operating input voltage
Supply current (quiescent)
Supply current (shutdown)
Input UVLO threshold
Input UVLO hysteresis
LDO output voltage
EN on threshold
EN off threshold
EN pull-down resistance
Symbol Condition
VIN
IQ
IST
VIN_UVLO
VCC
VEN_ON
VEN_OFF
No switching
VEN = 0V, VIN = 12V
Rising edge
VEN = 2V, 6V < VIN < 24V,
0 < IVCC < 10mA
VEN rising
VEN falling
RDS_LS
VIN = 3.7V
ISW_LK
Switching frequency
fSW
VSW = 45V
RFREQ = 10kΩ
RFREQ = 46.8kΩ
FREQ float
Current limit protection
ISW_LIMIT
ICL
SYNC input low threshold
SYNC input high threshold
VSYNC_LO
VSYNC_HI
COMP trans-conductance
GCOMP
COMP source current limit
COMP sink current limit
Current Dimming
DIM input low threshold
DIM input high threshold
ICOMP_SO
ICOMP_SI
Max
Units
36
3.1
100
V
mA
μA
V
mV
5
V
5
1
1.2
0.4
REN
VFREQ
IFSP
DMAX
Typ
3.5
Step-Up Converter
Low-side MOS on
resistance
SW leakage current
FREQ voltage
FSP pull-up current
Maximum duty cycle
Cycle-by-cycle current limit
Min
fSW = 1MHz
Duty = 90%
To trigger current limit
protection
VSYNC falling
VSYNC rising
ΔICOMP ≤ 10μA
VDIM_LO VDIM falling
VDIM_HI VDIM rising
-10%
-10%
-20%
-5%
90
2.3
V
V
1
MΩ
100
mΩ
4
μA
MHz
kHz
kHz
V
μA
%
A
8
A
2.2
470
400
0.6
18
1
+10%
+10%
+20%
+5%
0.4
1.2
V
V
100
μA/V
90
30
μA
μA
0.4
1.2
MPQ7220 Rev. 1.1
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© 2022 MPS. All Rights Reserved.
V
V
7
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, VEN = 2V, TJ = -40°C to +125°C, typical values at TJ = 25°C, unless otherwise noted.
Parameter
Led Current Regulator
LEDX regulation voltage
Symbol Condition
VHD
Current matching (6)
ISET voltage
LED current
ILED = 20mA
ILED = 100mA
ILED = 20mA
ILED = 100mA
700
-2.5
-2.5
VISET
ILED
mA
+2.5%
RISET = 24.9kΩ, TJ = -40°C
to +125°C, no overtemperature LED current
decrement
-4%
50
+4%
mA
1.9
2
200
100
2.1
V
mV
mV
4.3
4.7
5.1
V
6
7.7
100
170
20
55
6
18
10
ms
mV
°C
°C
µA
V
μA
VLEDX_OV STH floating or VSTH = 0.5V
VLEDX_UV
ISD
VSD-IN
ISTH
1000
+2.5
+2.5
mV
mV
%
%
V
50
LEDX over-voltage threshold
SD pull-down current
SD voltage (with respect to VIN)
STH pull-up current
Units
-2.5%
VOVP_UV Step-up converter fails
TST
300
850
Max
RISET = 24.9kΩ, TJ = 25°C
VOVP
Thermal shutdown threshold (7)
Typ
1.2
Protection
Over-voltage protection threshold
OVP hysteresis
OVP UVLO threshold
LEDX over-voltage fault timer
LEDX UVLO threshold
Min
Rising edge
Hysteresis
40
VIN = 12V, VIN - VSD
STH pull-up current
70
Notes:
6) Matching is defined as the difference of the maximum to minimum current divided by the setting current.
7) Not tested in production. Guaranteed by design and characterization.
MPQ7220 Rev. 1.1
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8
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted.
Quiescent Current vs.
Temperature
60.0
7.5
50.0
6.5
40.0
5.5
IQ (mA)
IST (nA)
Shutdown Current vs.
Temperature
30.0
4.5
20.0
3.5
10.0
2.5
0.0
1.5
-50 -30 -10 10
30
50
70
TEMPERATURE
(oC)
90 110 130
-50 -30 -10 10
VIN UVLO Threshold vs.
Temperature
TEMPERATURE
(oC)
90 110 130
4.4
4.2
ISW _LIMIT (A)
VIN_UVLO (V)
70
4.6
Rising
Falling
3.2
3.0
2.8
2.6
2.4
4.0
3.8
3.6
3.4
2.2
3.2
-50 -30 -10 10 30 50 70 90 110 130
TEMPERATURE (oC)
-50 -30 -10 10
30
50
70
TEMPERATURE
Current Limit Protection vs.
Temperature
90 110 130
(oC)
LS-FET On Resistance vs.
Temperature
8.8
200.0
8.6
180.0
8.4
160.0
RON_LS (mΩ)
8.2
ICL (A)
50
Cycle-by-Cycle Current Limit vs.
Temperature
3.6
3.4
30
8.0
7.8
7.6
140.0
120.0
100.0
80.0
7.4
7.2
60.0
-50 -30 -10 10
30
50
70
90 110 130
TEMPERATURE (oC)
-50 -30 -10 10
30
50
70
90 110 130
TEMPERATURE (oC)
MPQ7220 Rev. 1.1
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9
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to +125°C, unless otherwise noted.
OVP Threshold vs.
Temperature
510
2.5
500
2.4
2.2
490
VOVP (V)
fSW (KHz)
Switching Frequency vs.
Temperature
480
470
2.1
1.9
1.8
460
1.6
450
-50 -30 -10 10
30
50
70
TEMPERATURE (oC)
90 110 130
1.5
-50 -30 -10
10
30
50
70
90 110 130
TEMPERATURE ( oC)
MPQ7220 Rev. 1.1
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10
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency with 6P8S LED
Efficiency with 6P12S LED
VLED = 23V, ILED = 6 x ISET
VLED = 34V, ILED = 6 x ISET
97
97
94
94
91
91
EFFICIENCY (%)
EFFICIENCY (%)
VIN = 12V, L = 22μH, LED = 6P12S, fSW = 470kHz, ISET = 100mA, TA = 25°C, unless otherwise noted.
88
85
82
79
76
ISET=100mA
ISET=50mA
73
88
85
82
79
76
ISET=100mA
ISET=50mA
73
70
70
8
10
12
14
16
INPUT VOLTAGE (V)
18
20
9
12
15
18
21
24
27
30
INPUT VOLTAGE (V)
MPQ7220 Rev. 1.1
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, L = 15μH, LED = 6P12S, fSW = 450kHz, ISET = 100mA, with EMI filters, TA = 25°C, unless
otherwise noted. (8)
CISPR25 Class 5 Peak Conducted
CISPR25 Class 5 Average Conducted
Emissions
Emissions
150kHz to 108MHz
CISPR25 CLASS 5 LIMITS
AVERAGE CONDUCTED EMI (dBµV)
PEAK CONDUCTED EMI (dBµV)
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
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
108
10
NOISE FLOOR
Frequency (MHz)
1
0.1
CISPR25 Class 5 Peak Radiated
Emissions
150kHz to 30MHz
150kHz to 30MHz
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
-5
45
40
35
CISPR25 CLASS 5 LIMITS
30
25
20
15
10
5
0
-5
-10
-15
0.1
1
NOISE FLOOR
-10
Frequency (MHz)
10
30
-15
0.1
CISPR25 Class 5 Peak Radiated
Emissions
Horizontal, 30MHz to 200MHz
30
10
Horizontal, 30MHz to 200MHz
HORIZONTAL POLARIZATION
50
HORIZONTAL POLARIZATION
45
CISPR25 CLASS 5 LIMITS
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
Frequency (MHz)
55
50
40
35
30
25
20
15
10
5
1
CISPR25 Class 5 Average Radiated
Emissions
55
45
108
10
CISPR25 Class 5 Average Radiated
Emissions
60
PEAK RADIATED EMI (dBµV/m)
CISPR25 CLASS 5 LIMITS
40
35
30
25
15
10
5
NOISE FLOOR
0
CISPR25 CLASS 5 LIMITS
20
NOISE FLOOR
0
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
-5
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
Frequency (MHz)
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, L = 15μH, LED = 6P12S, fSW = 450kHz, ISET = 100mA, with EMI filters, TA = 25°C, unless
otherwise noted. (8)
CISPR25 Class 5 Peak Radiated
CISPR25 Class 5 Average Radiated
Emissions
Emissions
Vertical, 30MHz to 200MHz
Vertical, 30MHz to 200MHz
55
55
VERTICAL POLARIZATION
50
45
CISPR25 CLASS 5 LIMITS
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
VERTICAL POLARIZATION
50
45
40
35
30
25
20
15
10
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
NOISE FLOOR
0
0
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
-5
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
Frequency (MHz)
CISPR25 Class 5 Peak Radiated
Emissions
CISPR25 Class 5 Average Radiated
Emissions
Horizontal, 200MHz to 1GHz
Horizontal, 200MHz to 1GHz
55
55
HORIZONTAL POLARIZATION
50
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
45
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
HORIZONTAL POLARIZATION
50
45
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
NOISE FLOOR
-5
200
300
400
500
600
700
800
900
1000
900
1000
Frequency (MHz)
CISPR25 Class 5 Peak Radiated
Emissions
CISPR25 Class 5 Average Radiated
Emissions
Vertical, 200MHz to 1GHz
Vertical, 200MHz to 1GHz
55
55
VERTICAL POLARIZATION
50
45
45
CISPR25 CLASS 5 LIMITS
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
VERTICAL POLARIZATION
50
40
35
30
25
20
15
10
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
NOISE FLOOR
-5
200
300
400
500
600
700
800
Frequency (MHz)
Notes:
8) The EMC test results are based on the application circuit with EMI filters (see Figure 4 on page 25).
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13
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
CISPR25 Class 5 Peak Conducted
Emissions
CISPR25 Class 5 Average Conducted
Emissions
150kHz to 108MHz
150kHz to 108MHz
CISPR25 CLASS 5 LIMITS
AVERAGE CONDUCTED EMI (dBµV)
PEAK CONDUCTED EMI (dBµV)
VIN = 12V, L = 15μH, LED = 6P12S, fSW = 410kHz, ISET = 100mA, with EMI filters, TA = 25°C, unless
otherwise noted. (9)
NOISE FLOOR
1
0.1
108
10
Frequency (MHz)
150kHz to 30MHz
150kHz to 30MHz
60
55
CISPR25 CLASS 5 LIMITS
50
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
50
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
0.1
1
30
10
Frequency (MHz)
CISPR25 CLASS 5 LIMITS
30
-5
NOISE FLOOR
0.1
1
30
10
Frequency (MHz)
CISPR25 Class 5 Peak Radiated
Emissions
CISPR25 Class 5 Average Radiated
Emissions
Horizontal, 30MHz to 200MHz
Horizontal, 30MHz to 200MHz
55
55
HORIZONTAL POLARIZATION
50
50
HORIZONTAL POLARIZATION
45
AVERAGE RADIATED EMI (dBµV/m)
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
5
108
10
Frequency (MHz)
CISPR25 Class 5 Average Radiated
Emissions
55
45
1
CISPR25 Class 5 Peak Radiated
Emissions
60
PEAK RADIATED EMI (dBµV/m)
75
70
65
60
CISPR25 CLASS 5 LIMITS
55
50
45
40
35
30
25
20
15
10
5 NOISE FLOOR
0
-5
-10
-15
-20
0.1
NOISE FLOOR
40
35
30
25
15
10
5
0
CISPR25 CLASS 5 LIMITS
20
NOISE FLOOR
0
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
-5
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
Frequency (MHz)
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, L = 15μH, LED = 6P12S, fSW = 410kHz, ISET = 100mA, with EMI filters, TA = 25°C, unless
otherwise noted. (9)
CISPR25 Class 5 Peak Radiated
CISPR25 Class 5 Average Radiated
Emissions
Emissions
Vertical, 30MHz to 200MHz
Vertical, 30MHz to 200MHz
55
VERTICAL POLARIZATION
55
50
VERTICAL POLARIZATION
50
CISPR25 CLASS 5 LIMITS
45
40
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
45
35
30
25
20
15
10
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
NOISE FLOOR
5
0
0
-5
30
40
50
60
70
80
90
100 110 120
Frequency (MHz)
130
140
150
160
170
180
190
200
-5
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
Frequency (MHz)
CISPR25 Class 5 Peak Radiated
Emissions
CISPR25 Class 5 Average Radiated
Emissions
Horizontal, 200MHz to 1GHz
Horizontal, 200MHz to 1GHz
55
55
HORIZONTAL POLARIZATION
50
45
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
HORIZONTAL POLARIZATION
50
45
CISPR25 CLASS 5 LIMITS
40
35
30
25
20
15
10
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
NOISE FLOOR
-5
1000
200
400
500
600
700
800
900
1000
Frequency (MHz)
CISPR25 Class 5 Peak Radiated
Emissions
CISPR25 Class 5 Average Radiated
Emissions
Vertical, 200MHz to 1GHz
Vertical, 200MHz to 1GHz
55
55
VERTICAL POLARIZATION
50
VERTICAL POLARIZATION
50
45
45
CISPR25 CLASS 5 LIMITS
AVERAGE RADIATED EMI (dBµV/m)
PEAK RADIATED EMI (dBµV/m)
300
40
35
30
25
20
15
10
NOISE FLOOR
5
40
35
30
25
CISPR25 CLASS 5 LIMITS
20
15
10
5
0
0
-5
200
300
400
500
600
Frequency (MHz)
700
800
900
1000
NOISE FLOOR
-5
200
300
400
500
600
700
800
900
1000
Frequency (MHz)
Notes:
9) The EMC test results are based on the application circuit with EMI filters (see Figure 6 on page 26).
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15
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, L = 22μH, LED = 6P12S, fSW = 470kHz, ISET = 100mA, TA = 25°C, unless otherwise noted.
Steady State
Frequency Spread Spectrum
ISET = 100mA
CH2: VOUT
1/20 of the center frequency
CH3: ILED
CH2: VOUT
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
Start-Up through VIN
Shutdown through VIN
ISET = 100mA
ISET = 100mA
CH2: VIN
CH2: VIN
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
Start-Up through EN
Start-Up through EN
ISET = 100mA
ISET = 100mA
CH2: VEN
CH2: VEN
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1: VSW
CH1: VSW
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16
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, L = 22μH, LED = 6P12S, fSW = 470kHz, ISET = 100mA, TA = 25°C, unless otherwise noted.
PWM Dimming Steady State
PWM Dimming Steady State
Dimming frequency = 100Hz
Dimming frequency = 2kHz
CH2: VDIM
CH2: VDIM
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1:VSW
CH1:VSW
PWM Dimming
Start-Up through VIN
PWM Dimming
Shutdown through VIN
CH2：VIN
CH2：VIN
CH1：VDIM
CH1：VDIM
CH3: ILED
CH3: ILED
CH4：IL
CH4：IL
R1：VSW
R1：VSW
PWM Dimming On
PWM Dimming Off
CH2: VDIM
CH2: VDIM
CH3: ILED
CH3: ILED
CH4:IL
CH4:IL
CH1:VSW
CH1:VSW
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17
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, L = 22μH, LED = 6P12S, fSW = 470kHz, ISET = 100mA, TA = 25°C, unless otherwise noted.
All 6 Strings LED Open Power On
CH3: VIN
All 6 Strings LED Open Entry
CH2: VFF
CH3: ILED
CH2: VFF
CH4: IL
CH4: IL
CH1:VSW
CH1:VSW
1 String LED Open Entry
1 String LED Open Recovery
CH2: VFF
CH2: VFF
CH3: ILED
CH3: ILED
CH4: IL
CH4: IL
CH1:VSW
CH1:VSW
VOUT Short to LEDx Steady State
VOUT Short to LEDx Entry
CH3: ILED
CH3: ILED
CH2: VFF
CH2: VFF
CH4: IL
CH4: IL
CH1:VSW
CH1:VSW
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18
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 12V, L = 22μH, LED = 6P12S, fSW = 470kHz, ISET = 100mA, TA = 25°C, unless otherwise noted.
VOUT Short to LEDx Recovery
Short 1 String at Working
CH3: ILED
CH3: ILED
CH2: VFF
CH2: VFF
CH4: IL
CH4: IL
CH1:VSW
CH1:VSW
Short 1 String Recovery
LEDx Short to GND Entry
CH2: VFF
CH3: ILED
CH2: VFF
CH3: ILED
CH4: IL
CH4: IL
CH1:VSW
CH1:VSW
Inductor Short Entry
CH2: VFF
CH3: ILED
CH4: IL
CH1:VSW
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19
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
FUNCTIONAL BLOCK DIAGRAM
VIN
L
D
VOUT
COUT
CIN
PGND
VIN
SW
SD
VCC
Regulator
Control
Logic
AGND
+
EN
EN
BG &
Logic
Slope
COMP
OCP
2V
OVP
OVP
EA
Min
Fault
Control
REF
FREQ/
SYNC
LED1-6
UVP
FF
100mV
LED_S
Oscillator
COMP
Saturated
OTP
Max
LED Short
Threshold
STH
FSP
LED1
Max
DIM
DIM Control
DIM
Min
Feedback
Control
LED2
LED3
Current Control
LED4
LED5
2V
Fault
Flag
FF
FF
FF
LED6
ISET
VCC
Figure 1: Functional Block Diagram
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
OPERATION
The MPQ7220 employs a programmable,
constant-frequency, peak current mode, stepup converter with up to six channels of
regulated current sources to drive the array of
white LEDs.
Internal 5V Regulator
The MPQ7220 includes an internal linear
regulator (VCC). When VIN exceeds 6V, this
regulator outputs a 5V power supply to the
internal MOSFET switch gate driver and the
internal control circuitry. The VCC voltage drops
to 0V when the chip shuts down. The chip
remains disabled until VCC exceeds the UVLO
threshold.
System Start-Up
If both VIN and EN exceed their respective
thresholds, the IC starts up. The IC pulls (VIN VSD) to 6V to turn on the external disconnect
PMOS (if this PMOS is used). After a 500µs
delay, the IC monitors the OVP pin tfo
determine whether the output is shorted to
GND. If the OVP pin voltage drops below
100mV for 10µs, then the IC latches off and the
SD pin is pulled to VIN to turn the PMOS off.
Then the MPQ7220 continues to check other
safety limits (e.g. LED open and over-voltage
protection). If the device passes all of the
protection tests, the IC starts to boost the stepup converter with an internal soft start.
The recommended start-up sequence is listed
below:
1. VIN starts up
2. EN starts up
3. PWM dimming signal starts up
Step-Up Converter
The MPQ7220 employs peak current mode
control to regulate the output energy. At the
beginning of each switching cycle, the internal
clock turns on the internal MOSFET (in normal
operation, the minimum on time is about 100ns).
A stabilizing ramp added to the output of the
current-sense amplifier prevents sub-harmonic
oscillations for duty cycles greater than 50%.
This result is fed into the PWM comparator.
When the summed voltage reaches the output
voltage of the error amplifier, the internal
MOSFET turns off.
The output voltage of the internal error amplifier
is an amplified signal of the difference between
the reference voltage and the feedback voltage.
The converter automatically chooses the lowest
active LEDx pin voltage to provide a high
enough output voltage to power all the LED
arrays.
If the feedback voltage drops below the
reference, the output of the error amplifier
increases. This results in more current flowing
through the MOSFET, thus increasing the
power delivered to the output. This forms a
closed loop that regulates the output voltage.
Under light-load conditions, especially in the
case of VOUT ≈ VIN, the converter runs in pulseskipping mode where the MOSFET turns on for
a minimum on time, and then the converter
discharges the power to the output for the
remaining period. The internal MOSFET
remains off until the output voltage needs to be
boosted again.
LED Current Setting
The LED current amplitude is set by an external
resistor from ISET to GND. The LED current
amplitude setting follows Equation (1):
ILED (mA) =
1245
RISET (k )
(1)
For RISET = 12.4kΩ, the LED current is 100mA.
PWM Dimming Control
Applying an external 100Hz to 20kHz PWM
waveform to DIM pin for PWM dimming. During
PWM dimming, the part stops switching when
DIM is below 0.4V and the LED current is zero.
The part resumes normal operation with a
nominal LED current when DIM exceeds 1.2V.
Unused LED Channel Setting
The MPQ7220 automatically detects the
unused LED string and removes it from the
control loop during start-up by connecting the
LEDx pin of an unused channel to GND. If
employing 5 strings, connect the LED6 to GND.
If using 4 strings, connect the LED5 and LED6
to GND, and so on.
Frequency Spread Spectrum
The MPQ7220 uses switching frequency jitter to
spread the switching frequency spectrum. It
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
reduces the spectrum spike around the
switching frequency
and its
harmonic
frequencies.
The FSP pin can program the dithering range,
and the modulation frequency is fixed to 1/150
of the switching frequency. FSP is a currentsource output (18μA). Connect a resistor to
program its voltage.
If FSP < 0.4V, the jitter frequency is 1/20 of the
central frequency.
If FSP = 0.45V to 1.4V, the jitter frequency is
1/32 of the central frequency.
If FSP > 1.4V or is left floating, the frequency
spread spectrum is disabled.
Programming
and
Synchronizing
the
Switching Frequency
The switching frequency is programmed
through an external resistor or an external clock
on the FREQ/SYNC pin. The switching
frequency can be determined with Equation (2):
FSW (kHz) =
22000
RFRE (k )
(2)
For ROSC = 46.4kΩ, the switching frequency is
set to 470kHz.
Synchronize the switching frequency using an
external clock to improve EMI, efficiency, and
thermal performance.
Protection
The MPQ7220 includes open string protection,
short string protection, short LEDx to GND
protection, over-current protection, short out to
GND protection, and thermal protection. Once
the protection is triggered, the fault flag (FF) pin
pulls to GND. FF is released to high with a
750μs delay after the IC recovering from
protection.
Open String Protection
Open string protection is achieved through
detecting the voltage of the OVP pin and the
LED1-6 pins. During operation, if one string is
open, the respective LEDx pin voltage is pulled
low to ground. The IC keeps charging the
output voltage until it reaches the over-voltage
protection (OVP) threshold. If the OVP point
has been triggered, the chip stops switching
and marks off the fault string that has a LEDx
pin voltage below 100mV. Once marked, the
remaining LED strings force the output voltage
back into normal regulation. The string with the
largest voltage drop determines the output
regulation value. The marked-off string sends a
10μs pulse current to check whether an open
fault is removed after every 500μs delay, so
open string protection is recoverable.
Short String Protection
The MPQ7220 monitors the LEDx pin voltages
to determine whether a short string fault has
occurred. If one or more strings are shorted, the
respective LEDx pins tolerate high voltage
stress. If an LEDx pin voltage exceeds the
protection threshold, an internal counter is
started. If this fault condition lasts for 7.7ms, the
fault string is marked off and disabled. Once a
string is marked off, it disconnects from the
output voltage loop until the short is removed.
The short protection threshold is set by the
external STH pin. An 18µA current flows out of
the pin. Connect a resistor from STH to AGND
to get a voltage (VSTH). The threshold is 10
times VSTH when VSTH < 1.4V. When STH is
floating or VSTH > 1.4V, the short protection
threshold is set to 5V.
When all LEDx voltages exceed the threshold
for 480ms, all strings are marked off. The IC is
on standby until the strings release from
shorting.
Short LEDx to GND Protection
When LEDx shorts to GND, the COMP voltage
increases and saturates. When the COMP
saturated time lasts for 20ms, protection is
triggered, the FF pin pulls low, and the SD pin
is pulled high to turn off the external PMOS.
The IC also latches off.
Short VOUT to GND Protection
If VOUT shorts to GND, the OVP voltage
decreases and triggers the OVP UVLO
threshold (100mV) for 10μs. Then the OVP
UVLO protection is triggered. The SD pin is
pulled up to VIN to turn the external PMOS off,
VOUT is disconnected from VIN, and the IC
latches off. The OVP voltage should be below
100mV; otherwise, the protection cannot be
triggered. Caution should be taken if a VOUT
short to GND occurs during start-up, since there
is a 500μs delay before OVP pin detection is
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
active (see the System Start-Up section). If a
VOUT short to GND occurs before OVP detection
is active, the output current may rise too high
and damage the PMOS and diode.
Cycle-by-Cycle Current Limit
To prevent the external components from
exceeding the current stress rating, the IC has
cycle-by-cycle current limit protection. When the
current exceeds the current limit value, the IC
stops switching until the next clock cycle.
Latch-Off Current Limit Protection
Extreme conditions like excess current or an
inductor short may cause device damage.
Therefore, the MPQ7220 provides a latch-off
current limit protection when the current flowing
through an internal MOSFET reaches the
threshold (8A) and lasts for five switching
cycles.
Over-Temperature LED Current Decrement
When the die temperature exceeds 140°C, the
MPQ7220 automatically decreases the LED
current amplitude.
ILED
100%
Brightness
140
Temperature (°C)
Figure 2: ILED Decreases with Temperature
Thermal Shutdown
When the die temperature exceeds the upper
threshold (TST), the IC shuts down. It recovers
to normal operation when the die temperature
drops below the lower threshold. The hysteresis
value is typically 20°C.
Thermal Protection
To prevent the IC from damage when operating
at exceedingly high temperatures, thermal
protection is implemented in this chip by
detecting the silicon die temperature.
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
APPLICATION INFORMATION
LED Current Setting
The LED current amplitude is set by an external
resistor connected from ISET to GND. The LED
current amplitude setting is determined with
Equation (3):
ILED (mA) =
1245
RISET (k )
(3)
For RISET = 12.4kΩ, the LED current is 100mA.
Setting the Over-Voltage Protection (OVP)
The voltage divider sets the over-voltage
protection (OVP) point (see Figure 3). Calculate
VOVP with Equation (4):
VOVP (V) = 2 V
R3 + R 4
R4
(4)
Normally, the OVP point is set about 10% to
30% higher than the LED voltage.
Switching Frequency
The frequency can be programed by an
external resistor or an external clock on the
FREQ/SYNC pin. Calculate the switching
frequency using Equation (5):
fSW (kHz) =
22000
R FRE (k)
(5)
For RFRE = 46.4kΩ, the switching frequency is
set to 470kHz.
Synchronize the switching frequency using an
external clock to improve EMI, efficiency, and
thermal performance.
Selecting the Input Capacitor
The input capacitor reduces the surge current
drawn from the input supply and the switching
noise from the device. The input capacitor
impedance at the switching frequency should
be less than the input source impedance to
prevent the high-frequency switching current
from passing through to the input. Use ceramic
capacitors with X5R or X7R dielectrics for their
low ESR and small temperature coefficients.
For most applications,
capacitor is sufficient.
a
10μF
ceramic
Selecting the Inductor
The MPQ7220 requires an inductor to supply a
higher output voltage while being driven by the
input voltage. A larger-value inductor results in
less ripple current, lower peak inductor current,
and less stress on the internal MOSFET.
However, the larger-value inductor has a larger
physical size, higher series resistance, and
lower saturation current.
Choose an inductor that does not saturate
under worst-case load conditions. Select the
minimum inductor value to ensure that the
boost converter works in continuous conduction
mode with high efficiency and good EMI
performance.
Calculate the required inductance value using
Equation (6) and Equation (7):
L
η VOUT D (1− D)2
2 fSW ILOAD
D = 1−
VIN
VOUT
(6)
(7)
Where VIN and VOUT are the input and output
voltages, respectively. fSW is the switching
frequency, ILOAD is the LED load current, and η
is the efficiency.
With the given inductor value, the inductor DC
current rating is at least 40% greater than the
maximum input peak inductor current for most
applications. The inductor’s DC resistance
should be as small as possible for higher
efficiency.
Selecting the Output Capacitor
The output capacitor keeps the output voltage
ripple small and ensures feedback loop stability.
The output capacitor impedance must be low at
the switching frequency. Ceramic capacitors
with X7R dielectrics are recommended for their
low ESR characteristics. For most applications,
a 10μF ceramic capacitor is sufficient.
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
PCB Layout Guidelines
Efficient PCB layout is critical for stable
operation. A 4-layer layout is strongly
recommended to improve thermal performance.
For the best results, refer to Figure 3 and
Figure 4, and follow the guidelines below:
5.
Make the connection between the input
capacitor and VIN as short and wide as
possible.
6.
Place the VCC capacitor as close to the
VCC and PGND pins as possible.
7.
Use an internal PCB layer for the GND
plane to keep radiated noise away from the
device to reduce EMI.
1.
Use a large ground plane to connect PGND
directly.
2.
If the bottom layer is a ground plane, add
vias near PGND.
8.
Route the high-speed switching nodes
away from the sensitive analog areas.
3.
Connect the high-current paths at PGND
and VIN using short, direct, and wide traces.
9.
Use multiple vias to connect the power
planes to the internal layers.
4.
Place the ceramic input capacitor,
especially the input bypass capacitor in a
small package (0603), as close to the VIN
and PGND pins as possible to minimize
high-frequency noise.
Top Layer
Mid-Layer 1
Mid-Layer 2
Bottom Layer
Figure 3: Recommended PCB Layout for the QFN-24 Package (10)
Note:
10) The recommended PCB layout is based on Figure 6 on page 27.
MPQ7220 Rev. 1.1
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
Top Layer
Mid-Layer 1
Mid-Layer 2
Bottom Layer
Figure 4: Recommended PCB Layout for the TSSOP-28 Package (11)
Note:
11) The recommended PCB layout is based on Figure 8 on page 28.
MPQ7220 Rev. 1.1
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26
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
TYPICAL APPLICATION CIRCUITS
M1
AM4841P
C1B
4.7µF/50V
GND
C2
1µF
1
VCC
SD
19
SW
18
PGND
17
LED1
16
4 EN
LED2
5
AGND
6 AGND
DIM
SYNC
R7
3
GND
FREQ/SYNC
R8
R9
GND
GND
LED1
LED1
15
LED2
LED2
LED3
14
LED3
LED3
LED4
13
LED4
LED4
LED5
LED5
MPQ7220GR
46.4kΩ
1kΩ
C5
100pF
GND
100kΩ
2 NC
EN
GND
R4
10kΩ
OVP
R6
GND
22
23
24
VIN
R5
1kΩ
R2
10kΩ
VCC
0.1µF/50V
4.7µF/50V 4.7µF/50V 0.1µF/50V
20
GND
C2C
C2B
R3
191kΩ
STH
R1
100Ω
C1
GND
DIM
OUT
C2A
21
C1A
4.7µF/50V
ILED = 0.6A
22µH
D2
GND B240
FSP
VIN
D1
B360
L1
100kΩ
AGND
270Ω
C3
1nF
LED5
12
11 LED6
AGND
R11
R10
PGND
10
ISET
9
8
7
FF
COMP
GND
LED6
LED6
GND
100kΩ
R12
12.4kΩ
C4
470nFVCC
GND
GND
FF
Figure 5: Typical Application Circuit for the QFN-24 Package (ISET = 100mA, fSW = 470kHz)
D1
VIN
M1
4.7µH
GND
5, 6, 7, 8
B140
L2
4.7µF
GND
4
CIN7
22µF
GND
DIM
1
C4
C6
C5
10nF
GND
DIM
GND
OVP
19
23
24
21
FSP
100k
R10
NS
OVP
SD
U1
VIN
GND
VIN
C3
R11
191k
VCC
100nF
R1
R9
0
C7
1µF
C1
22
GND
VCC
GND
C2
0.1µF 4.7µF 4.7µF 4.7µF
GND
R8
100
R12
10k
OVP
22nF 22nF 22nF 22nF 4.7µF 4.7µF
15µH/XAL4040
20
CIN1 CIN2 CIN3 CIN4 CIN5 CIN6
FB1
D2 B260A
LED+
C8
AM4841P
STH
L1
3.5V to 36V
VEMI
1, 2, 3
Input EMI Filter
SW
C9
100pF
18
GND
GND
GND
2
NC
PGND
17
C12 270pF
SYNC
FREQ/SYNC
R2
GND
3
FREQ/SYNC
LED1
VIN
GND
GND
LED1
MPQ7220GR
48.7k
R3
16
4
GND
EN
LED2
15
LED2
14
LED3
100k
R4
GND
NS
EN
LED1
C13 270pF
LED2
C14 270pF
GND
5
AGND
LED3
LED3
C15 270pF
GND
LED5
13
LED4
LED4
C16 270pF
GND
LED5
12
LED6
11
10
9
FF
ISET
AGND
LED4
8
AGND
COMP
6
7
GND
LED5
C17 270pF
FF
GND
AGND
PGND
C10
1nF
R5
270
LED6
FF
C11
R6
10k
LED6
GND
R7
12.4k
470nF
GND
VCC
GND
Figure 6: Typical Application Circuit for the QFN-24 Package with EMI Filters (ISET = 100mA, fSW = 450kHz)
MPQ7220 Rev. 1.1
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11/3/2022
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
M1
AM4841P
VIN
C1A
4.7µF/50V
D1
B360
L1
4.7µF/50V
ILED = 0.6A
22µH
D2
GND B240
C1B
C2A
GND
R1
100Ω
GND
4.7µF/50V 4.7µF/50V 0.1µF/50V
C4
1µF
R3
191kΩ
VCC
C3
STH
SD
3
GND
26
28
GND
VCC
1
OUT
C2C
C2B
SW
23
25
OVP
VIN
R4
10kΩ
C9
100pF
GND
0.1µF/50V
6
GND
GND
R2
10kΩ
MPQ7220GF
R6
1kΩ
27
FSP
NC
R5
DIM
5
DIM
LED1
FREQ/SYNC
LED2
EN
LED3
AGND
LED4
AGND
LED5
COMP
LED6
20
LED1
19
LED2
LED2
18
LED3
LED3
17
LED4
LED4
16
LED5
LED5
LED6
LED6
LED1
100kΩ
SYNC
R7
7
GND
46.4kΩ
R8
EN
8
R9
1kΩ
GND
100kΩ
9
GND
10
C7
1nF
11
GND
15
C8
R10
470nF 270Ω
12
ISET
13
GND
14
AGND
21
NC
NC
22
24
NC
4
2
FF
PGND
FF
R11
100kΩ
NC
VCC
R12
12.4kΩ
GND
GND
Figure 7: Typical Application Circuit for the TSSOP-28 Package (ISET = 100mA, fSW = 470kHz)
Input EMI Filter
3.5V to 36V
VEMI
CIN1 CIN2 CIN3 CIN4 CIN5 CIN6
L1
M1
AM4841P
VIN
CIN7
22µF
22nF 22nF 22nF 22nF 4.7µF 4.7µF
C8
R8
100
GND
GND
C2
3
C6
C5
10nF
26
SW
C1
GND
C4
GND
STH
SD
C3
0.1µF 4.7µF 4.7µF 4.7µF
R11
191k
VCC
1
LED+
C7
1µF
VCC
28
GND
4.7µF
FB1
15µh/XAL4040
D1
GND B140
GND
4.7µH
GND
D2
B260A
L2
OVP
VIN
R12
10k
23
GND
C9
100pF
GND
25
0.1µF
6
DIM
VIN
FSP
NC
27
R1
5
LED1
DIM
GND
C12 220pF
R9
0
MPQ7220GF
GND
LED1
20
SYNC
R2
GND
7
GND
LED2
FREQ/SYNC
LED2
19
LED2
C14 220pF
53.6k
GND
8
EN
LED1
C13 220pF
100k
R3
LED3
EN
LED3
18
LED3
C15 220pF
VIN
GND
100k
9
LED4
AGND
LED4
17
LED4
C16 220pF
GND
GND
10
LED6
15
13
LED6
R7
12.4k
GND
AGND
14
PGND
21
NC
ISET
NC
FF
NC
LED6
24
12
COMP
2
FF
LED5
GND
11
22
C11
R5
470nF 270
VCC
R6
10k
LED5
16
C17 220pF
4
GND
LED5
AGND
NC
C10
1nF
GND
GND
Figure 8: Typical Application Circuit for the TSSOP-28 Package with EMI Filters (ISET = 100mA,
fSW = 410kHz)
MPQ7220 Rev. 1.1
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11/3/2022
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28
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
CARRIER INFORMATION
QFN-24 (4mmx4mm)
1
Pin1
1
1
1
ABCD
ABCD
ABCD
ABCD
Feed Direction
TSSOP28-EP
1
Pin1
1
1
1
ABCD
ABCD
ABCD
ABCD
Feed Direction
Part Number
MPQ7220GR
MPQ7220GF
Package
Description
QFN-24
(4mmx4mm)
TSSOP28-EP
Quantity/Reel
Quantity/Tube
Reel
Diameter
Carrier
Tape Width
Carrier
Tape Pitch
2500
NA
13in
12mm
8mm
2500
50
13in
16mm
8mm
MPQ7220 Rev. 1.1
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
PACKAGE OUTLINE DRAWING FOR 24L QFN (4X4mm)
PACKAGE INFORMATIONMF-PO-D-0049 revision 2.0
QFN-24 (4mmx4mm)
PIN 1 ID
0.30X45° TYP
PIN 1 ID
MARKING
PIN 1 ID
INDEX AREA
0.10x45º
BOTTOM VIEW
TOP VIEW
SIDE VIEW
NOTE:
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE
MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.08
MILLIMETERS MAX.
4) JEDEC REFERENCE IS MO-220
5) DRAWING IS NOT TO SCALE.
RECOMMENDED LAND PATTERN
MPQ7220 Rev. 1.1
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11/3/2022
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30
MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
PACKAGE OUTLINE DRAWING FOR 28-TSSOP w/ EXPOSED PADDLE
MF-PO-D-0055 revision 2.0
PACKAGE INFORMATION
TSSOP28-EP
6.00
TYP
9.60
9.80
0.65
BSC
0.40
TYP
28
15
1.60
TYP
4.30
4.50
PIN 1 ID
3.20
TYP
6.20
6.60
5.80
TYP
14
1
TOP VIEW
RECOMMENDED LAND PATTERN
0.80
1.05
1.20 MAX
SEATING PLANE
0.19
0.30
0.65 BSC
0.00
0.15
0.09
0.20
SEE DETAIL "A"
FRONT VIEW
SIDE VIEW
GAUGE PLANE
0.25 BSC
5.40
5.90
0o-8o
0.45
0.75
DETAIL “A”
2.60
3.10
BOTTOM VIEW
NOTE:
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.10 MILLIMETERS MAX.
5) DRAWING CONFORMS TO JEDEC MO-153, VARIATION AET.
6) DRAWING IS NOT TO SCALE.
MPQ7220 Rev. 1.1
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11/3/2022
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MPQ7220 – 6-CHANNEL BOOST LED DRIVER WITH MAX 100mA/CHANNEL
REVISION HISTORY
Revision #
1.0
1.1
Revision Date
07/30/2019
11/3/2022
Description
Initial Release
Removed the qualification and updated “–Z” to “-Z” in the
Ordering Information section
Added EMI test results
Updated the System Start-Up section
Updated the Short VOUT to GND Protection section
Added the PCB Layout Guidelines section
Added Figure 6 and Figure 8; updated figure titles
Updated Figure 4
Updated the Carrier Information section
Updated header and footer formatting
Pages Updated
3
12–15
21
22
25
27–28
28
29
All
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.
MPQ7220 Rev. 1.1
MonolithicPower.com
11/3/2022
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32
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