MP4051 [MPS]
Non-isolated Solution Offline LED Controller with Active PFC;
| 型号： | MP4051 |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Non-isolated Solution Offline LED Controller with Active PFC 功率因数校正 |
| 文件： | 总16页 (文件大小：600K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP4051
Non-isolated Solution
Offline LED Controller with Active PFC
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP4051 is a non-isolated offline LED lighting
controller that achieves high power factor and
accurate LED current for single-stage PFC
lighting applications in a single SOIC8 package.
•
Unique Architecture for Superior Line
Regulation
Achieve <1% Line and Load Regulation
High Power Factor≥0.9 Over Universal Input
Voltage
Boundary Conduction Mode improves
Efficiency
Ultra-low (20µA) Start-up Current
Low (1mA) Quiescent Current
Input UVLO
Cycle-by-cycle Current Limit
Over-voltage Protection
Short-circuit Protection
Over-temperature Protection
Available in an SOIC8 Package
•
•
The MP4051 integrates power factor correction
and works in boundary conduction mode to
reduce the MOSFET switching losses.
•
•
•
•
•
•
•
•
•
The extremely low start-up current and quiescent
current reduces the total power consumption and
provides a high-efficiency solution for non-
isolated lighting applications.
The multi-protection features of MP4051 greatly
enhance system reliability and safety. The
MP4051 features over-voltage protection, short-
circuit protection, cycle-by-cycle current limiting,
VCC UVLO, and auto-restart over-temperature
protection.
APPLICATIONS
•
•
•
Solid-state Lighting
Industrial and Commercial Lighting
Residential Lighting
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
The MP4051 is under patent pending.
TYPICAL APPLICATION (HIGH-SIDE BUCK-BOOST TOPOLOGY)
4
1
3
2
5
7
6
8
GATE
MULT
VCC
CS
FB
GND
COMP
ZCD
EMI
Filter
MP4051
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
1
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
ORDERING INFORMATION
Part Number*
Package
Top Marking
SOIC8
MP4051GS
MP4051
* For Tape & Reel, add suffix –Z (e.g. MP4051GS–Z);
PACKAGE REFERENCE
TOP VIEW
MULT
ZCD
COMP
FB
1
2
3
4
8
7
6
5
VCC
GND
CS
GATE
SOIC8
Thermal Resistance (4)
θJA θJC
ABSOLUTE MAXIMUM RATINGS (1)
SOIC8 ...................................96 ......45 ...°C/W
Input Voltage VCC......................... -0.3V to +30V
ZCD Pin............................................-7V to +7V
Other Analog Inputs and Outputs..... -0.3V to 7V
Max. Gate Current ....................................±1.2A
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-to-
ambient 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.
Continuous Power Dissipation
(TA = +25°C) (2)
SOIC8........................................................1.3W
Junction Temperature..............................150°C
Lead Temperature ...................................260°C
Storage Temperature...............-65°C to +150°C
Recommended Operating Conditions (3)
3) The device is not guaranteed to function outside of its
operation conditions.
4) Measured on JESD51-7 4-layer board.
Supply Voltage VCC ....................... 10.3V to 23V
Operating Junction Temp. (TJ). -40°C to +125°C
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
2
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
ELECTRICAL CHARACTERISTICS
VCC = 14V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Supply Voltage
Operating Range
Turn-on Threshold
Turn-off Threshold
Hysteretic Voltage
Supply Current
Start-up Current
Quiescent Current
Operating Current
Multiplier
VCC
After turn on
10.3
12.6
8.4
23
14.6
9.6
V
V
V
V
VCC_ON
VCC rising edge
13.6
9.0
VCC_OFF VCC falling edge
VCC_HYS
4.5
ISTARTUP VCC=11V
20
0.75
2
30
1
µA
mA
mA
IQ
No switching
Fs =70kHz
ICC
3
Operation Range
Gain
VMULT
K(5)
0
3
V
1
1/V
Error Amplifier
Feedback Voltage
Transconductance (6)
VFB
GEA
0.403
0.414
222
5.65
1.5
0.425
V
µA/V
V
Upper Clamp Voltage
VCOMP_H
VCOMP_L
ICOMP
5.3
1.3
6
Lower Clamp Voltage
1.7
V
Max Source Current (6)
Max Sink Current (6)
75
µA
µA
ICOMP
-400
Current Sense Comparator
Leading Edge Blanking Time
Current Sense Clamp Voltage
Zero Current Detector
Zero Current Detect threshold
Zero Current Detect Hysteresis
ZCD Blanking Time
tLEB
280
2.5
ns
V
VCS_CLAMP
2.3
2.7
VZCD_T
VZCD falling edge
0.31
650
2.5
V
mV
μs
μs
V
VZCD_HYS
tLEB_ZCD After turn-off
1.8
5.1
3.2
5.7
Over-voltage Blanking Time
Over-voltage Threshold
tLEB_OVP After turn-off
1.5
VZCD_OVP 1.5μs delay after turn-off
5.4
After turn-on,
tLEB_OCP
Over-current Blanking Time
280
ns
same as tLEB
Over-current Threshold
Minimum Off Time
Starter
VZCD_OCP 280ns delay after turn-on
tOFF_MIN
0.57
2
0.60
3.5
0.63
5
V
µs
Start Timer Period
tSTART
130
µs
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
3
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
ELECTRICAL CHARACTERISTICS (Continued)
VCC = 14V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Gate Driver
Output Clamp Voltage
VGATE_CLAMP VCC=23V
VGATE_MIN VCC=VCC_OFF + 50mV
IGATE_SOURCE
12
13.5
15
V
V
A
A
Minimum Output Voltage
Max Source Current(6)
Max Sink Current(6)
Notes:
6.0
1
IGATE_SINK
-1.2
5) The multiplier output is given by: VCS=K•VMULT• (VCOMP-1.5)
6) Guaranteed by design.
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
4
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
PIN FUNCTIONS
Pin #
Name
Pin Function
Multiplier input. Connect this pin to the tap of resistor divider from the rectified voltage of the
AC line. The half-wave sinusoid signal to this pin provides a reference signal for the internal
current control loop.
1
MULT
Zero-current detection. A negative going-edge triggers the turn-on signal of the external
MOSFET. Connect this pin to a resistor divider between the auxiliary winding to GND. Over-
voltage condition is detected through ZCD. Every switching turn-off interval, if ZCD voltage
is higher than the over-voltage-protection (OVP) threshold after the 1.5µs blanking time, the
over-voltage protection will be triggered and the system will stop switching until auto-restart
comes. ZCD pin can also monitor over-current condition. Connect this pin thru a diode to a
resistor divider between CS to GND. Every switching turn-on interval, if ZCD voltage is
higher than the over-current-protection (OCP) threshold after the 280ns blanking time, the
over-current protection will trigger and the system will stop switching until auto-restart
comes.
2
ZCD
Power supply input. This pin supplies the power for the control signal and the high-current
MOSFET grade drive output. Bypass this pin to ground with an external bulk capacitor of
typically 22µF in parallel with a 100pF ceramic cap to reduce noise.
3
4
VCC
Gate drive output. This totem pole output stage is able to drive a high-power MOSFET with
a peak current of 1A source capability and 1.2A sink capability. The high level voltage of
this pin is clamped to 13.5V to avoid excessive gate drive voltage. And the low level voltage
is higher than 6V to guarantee enough drive capacity.
GATE
Current sense. The MOSFET current is sensed via a sensing resistor to its source lead. The
comparison between the resulting voltage and the internal sinusoidal-current reference
signal determines when the MOSFET turns off. In Buck-Boost solution (both high side and
low side), CS Pin is also used for current sample.
5
CS
A feed-forward from the rectified AC line voltage connected to the current sense pin
maximizes the line regulation. If the pin voltage is higher than the current limit threshold of
2.5V (after turn-on blanking) the gate drive will turn off.
6
7
GND
Ground. Current return for the control signal and the gate drive signal.
Feedback signal. This Pin is used for current sample in high side Buck-Boost or Buck, and
FB/NC it’s benefit for load regulation to sample the current through FB Pin.
Leave this pin floating (NC) in low side Buck-Boost solution.
Loop compensation input. Connect a compensation network to stabilize the LED drive and
maintain an accurate LED current.
8
COMP
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
5
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
TYPICAL PERFORMANCE CHARACTERISTICS
VIN =120VAC/220VAC, VO =300V, ILED=80mA, Lm=1.88mH, NP:NAUX =161: 13, unless otherwise noted.
Efficiency vs. V
IN
100
90
80
70
60
50
40
30
20
10
0
92.0
91.0
90.0
89.0
88.0
87.0
86.0
85.0
84.0
83.0
82.0
120
100kHz
1 MHz
10 MHz
EN55015Q
110
PF
SGL
TDS
1 PK 100
CLRWR
90
2 AV
CLRWR 80
70
60
50
40
30
20
EN55015A
6DB
THD
165
10
0
9kHz
30MHz
85
125
205
245 265
85
125
165
205
245 265
VIN (VAC)
VIN (VAC)
120
EN55015Q
100kHz
1 MHz
10 MHz
110
SGL
1 PK
CLRWR
100
90
2 AV
TDS
6DB
CLRWR 80
70
60
50
40
30
20
EN55015A
10
0
9kHz
30MHz
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
6
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN =120VAC/220VAC, VO =300V, ILED=80mA, Lm=1.88mH, NP:NAUX =161: 13, unless otherwise noted.
V
IN
V
100V/div.
COMP
2V/div.
V
V
CC
ZCD
10V/div.
2V/div.
V
FB
500mV/div.
I
IN
200mA/div.
V
MULT
V
GATE
2V/div.
I
5V/div.
LED
20mA/div.
V
IN
V
200V/div.
COMP
2V/div.
V
CC
V
ZCD
10V/div.
2V/div.
V
FB
500mV/div.
I
IN
200mA/div.
V
MULT
V
GATE
2V/div.
I
5V/div.
LED
20mA/div.
V
V
IN
IN
100V/div.
200V/div.
V
CC
10V/div.
V
ZCD
2V/div.
I
I
IN
IN
200mA/div.
200mA/div.
V
I
I
GATE
LED
LED
10V/div.
20mA/div.
20mA/div.
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
7
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN =120VAC/220VAC, VO =300V, ILED=80mA, Lm=1.88mH, NP:NAUX =161: 13, unless otherwise noted.
V
CC
V
CC
10V/div.
10V/div.
V
ZCD
V
ZCD
2V/div.
V
OUT
2V/div.
100V/div.
I
LED
20mA/div.
V
V
FB
GATE
500mV/div.
10V/div.
V
CC
10V/div.
V
ZCD
2V/div.
V
OUT
100V/div.
I
LED
20mA/div.
V
FB
500mV/div.
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
8
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
FUNCTION DIAGRAM
Figure 1—MP4051 Function Block Diagram
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
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© 2014 MPS. All Rights Reserved.
9
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
OPERATION
The MP4051 is a non-isolated control offline LED
controller which incorporates all the features for
high-performance LED lighting. Active Power
Factor Correction (PFC) eliminates unwanted
harmonic noise to pollute the AC line.
In low-side Buck-Boost, the mean output LED
current is calculated through the peak current
sensed from the MOSFET (through CS Pin). And
the mean output LED current can be calculated
approximately as:
Start Up
VFB
Io ≈
Initially, VCC of the MP4051 is charged through
the start up resistor from the AC line. When VCC
reaches 13.6V, the control logic works and the
gate drive signal begins to switch. Then the
power supply is taken over by the auxiliary
winding.
2⋅Rs
VFB—The feedback reference voltage (typical
0.4V)
RFB—The sensing resistor connected between
the FB RC filter and GND in high-side solution.
The MP4051 will shut down when VCC drops
below 9V.
Rs—The sensing resistor connected between the
MOSFET source and GND in low-side Buck-
Boost.
Boundary Conduction Mode Operation
VDS
During the external MOSFET on time (tON), the
rectified input voltage (VBUS) applies to the
inductor (Lm), and the inductor current (ILm)
increases linearly from zero to the peak value
(Ipk). When the external MOSFET turns off, the
output diode is turned on and the energy stored
in the inductor is transferred to the load. Then the
inductor current (ILm) begins to decrease linearly
from the peak value to zero. The auxiliary
winding is coupled with the inductor to supply the
Vcc voltage and turn on signal detection for ZCD.
The zero-current detector in the ZCD pin
generates the turn-on signal of the external
MOSFET when the ZCD voltage falls below
0.31V (see Figure 3).
VBUS+ VOUT
VBUS
turn-on
toff
ton
Ipk ILm
ILm
VZCD
0
As a result, there are virtually no MOSFET turn-
on losses and no output-diode reverse-recover
losses. It ensures high efficiency and low EMI
noise.
Figure 2—Boundary Conduction Mode
(Buck-Boost for example)
Auxiliary Winding
Real Current Control
+
In high-side solution (including both Buck and
Buck-Boost), the current is controlled through FB
Pin, the mean output LED current is directly
sampled by FB pin, so the load regulation of
high-side solution is good. The output LED
current can be set as:
Vcc
RZCD1
turn-on
signal
ZCD
0.31V
RZCD2
CZCD
VFB
Io =
RFB
Figure 3—Zero Current Detector
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
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© 2014 MPS. All Rights Reserved.
10
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
Power Factor Correction
off, if ZCD fails to send out another turn on signal
after 130µs, the starter will automatically send
out the turn on signal which can avoid the IC
unnecessary shut down by ZCD missing
detection.
The MULT pin is connected to the tap of the
resistor divider from the rectified instantaneous
line voltage and fed as one input of the Multiplier.
The output of the multiplier will be shaped as
sinusoid too. This signal provides the reference
for the current comparator and comparing with
the inductor current which sets the inductor peak
current shaped as sinusoid with the input line
voltage. High power factor can be achieved.
Minimum Off Time
The MP4051 operates with variable switching
frequency, the frequency is changing with the
input instantaneous line voltage. To limit the
maximum frequency and get a good EMI
performance, MP4051 employs an internal
minimum off time limiter—3.5µs, show as Figure
6.
Multiplier output
Inductor current
ZCD
Figure 4—Power Factor Correction Scheme
GATE
The maximum voltage of the multiplier output to
the current comparator is clamped to 2.5V to get
a cycle-by-cycle current limitation.
3.5us
Figure 6—Minimum Off Time
Leading Edge Blanking
VCC Under-voltage Lockout
When the VCC voltage drops below UVLO
threshold 9V, the MP4051 stops switching and
totally shuts down, the VCC will restart charging
by the external start up resistor from AC line.
Figure 5 shows the typical waveform of VCC
under-voltage lockout
In order to avoid the premature termination of the
switching pulse due to the spike at MOSFET
turning on, an internal leading edge blanking
(LEB) unit is employed between the CS Pin and
the current comparator input. During the blanking
time, the path, CS Pin to the current comparator
input, is blocked. Figure 7 shows the leading
edge blanking.
Protection happens
Auxiliary Winding Takes Charge
And Regulates the VCC
Vcc
13.6V
9V
VCS
Gate
tLEB =280 ns
Switching Pulses
Figure 5—VCC Under-Voltage Lockout
Auto Starter
t
The MP4051 integrates an auto starter, the
starter starts timing when the MOSFET is turned
Figure 7—Leading Edge Blanking
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
11
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
VZCD
Output Over-Voltage Protection (OVP)
Sampling Here
Output over voltage protection can prevent the
components from damage in the over voltage
condition. The positive plateau of auxiliary
winding voltage is proportional to the output
voltage, the OVP uses the auxiliary winding
voltage instead of directly monitoring the output
voltage, the OVP sample is shown in Figure 8.
Once the ZCD pin voltage is higher than 5.4V
after a 1.5us blanking time, the OVP signal will
be triggered and latched, the gate driver will be
turned off and the IC work at quiescent mode, the
VCC voltage dropped below the UVLO which will
make the IC shut down and the system restarts
again. The output OVP setting point can be
calculated as:
0V
tLEB_OVP
Figure 9—ZCD Voltage and OVP Sample
Output Short Circuit Protection
The MP4051 clamps the CS pin voltage to less
than 2.5V to limit the available output power.
When the short circuit of the LED load occurs,
the voltage of the auxiliary winding will fall down
following the voltage of the Load and the VCC
drops to less than UV threshold and re-start the
system.
NAUX
RZCD2
VOUT _OVP
⋅
⋅
= 5.4V
NSEC RZCD1 + RZCD2
As supplementary, tie a resistor divider form CS
sensing resistor to ZCD pin, shown in Figure 10.
When the power MOSFET is turned on, the ZCD
pin monitors the rising inductor current, once the
ZCD pin reaches OCP threshold, typical 0.6V,
the gate driver will be turned off to prevent the
chip form damage and the IC works at quiescent
mode, the VCC voltage dropped below the UVLO
which will make the IC shut down and the system
restarts again. Please note that the value of the
resistors to set the OCP threshold (ROCP1 & ROCP2
should be much smaller than those of the ZCD
zero-current detector (RZCD1 & RZCD2).
V
OUT_OVP—Output over voltage protection point
NAUX—The auxiliary winding turns
NSEC—The secondary winding turns
Auxiliary Winding
+
Vcc
RZCD1
)
OVP
signal
ZCD
Latch
RZCD2
5.4V
CZCD
Primary Winding
VBUS
1.5µs
Blanking
Figure 8—OVP Sample Unit
To avoid the mis-trigger OVP by the oscillation
spike after the switch turns off, the OVP sampling
has a tLEB_OVP blanking period, typical 1.5µs,
shown in Figure 9.
GATE
CS
PSR
control
RCS
ROCP1
OCP
ZCD
The current-limiting resistor between the output
of the aux-winding and the ZCD resistor divider
can also work as suppresser to avoid the OVP
mis-trigger.
signal
D
Latch
0.6V
ROCP2
280ns
Blanking
Figure 10—OCP Sample Unit
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
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© 2014 MPS. All Rights Reserved.
12
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
The OCP setting point can be calculated as:
Thermal Shut Down
To prevent from any lethal thermal damage,
when the inner temperature exceeds OTP
threshold, the MP4051 shuts down switching
cycle and latched until VCC drop below UVLO
and restart again.
ROCP2
IPRI_ OCP ⋅RCS
⋅
− VD = 0.6V
ROCP1 + ROCP2
I
PRI_OCP—Primary-side over current protection
point.
Design Example
For some applications, the inductor value is very
small, the minimal-off time feature could make
the system work in DCM at the zero-crossing of
the BUS voltage. To improve the OCP function in
this condition, please remove CZCD and reduce
the value of RZCD1 and RZCD2 proportionally.
For the design example, please refer to MPS
application note AN0xx for the detailed design
procedure and information.
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
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© 2014 MPS. All Rights Reserved.
13
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
TYPICAL APPLICATION CIRCUIT
LED-
R9
D5
2.2/1%
1206
R8
1.1/1%
1206
HER208
1kV/2A
R16
OUTPUT:
BD1
KBP206
600V/2A
150k/1%
1206
R10
3.3/1%
1206
200-300V/80mA
R3
1M
R5
510k
R6
51
LED+
161Ts
0.33mm
U1
1
2
3
4
8
7
6
5
R13
100
MULT
PGND
AGND
COMP
FB
R4
10k
1%
C2
L2
3.3mH
500mA
13Ts
L1
22nF
16V
R1
1k/1%
1206
0.20mm
PGND
3.3mH
500mA
C1
R2
1k/1%
1206
ZCD
220nF
400V
CX1
R11
510/1%
MP4051
R15
16k/1%
R12
1k/1%
R16
100nF/275VAC
3k/1%
AGND
D1
VCC
GND
D3
D4
L3
20mH
500mA
1N4148WS
75V/0.15A
75V/0.15A
1N4148WS
BZT52C27
27V/2mA
GATE
CS
PGND
AGND
R7
PGND
AGND
RV1
ERZ-V10D431
430V/2500A
F1
250V/2A
D2
BAV21W
200V/0.2A
51/1%
1206
85-265VAC
Figure 11—Universal Input, Non-isolated High-side Buck-boost Converter,
Drive 200V-300V/80mA LED Lamp
M1
SM K0870F/700V/8A
LED+
C5
100nF/400VAC
D1
S3J/600V/4A
LED-
GND
GND
GATE
GND
GND
LED+
U1
GND
WGC10GH/400V/1A
D4
ZCD
1
2
3
4
8
MULT
COMP
FB
D2
1N4148WT/75V/0.15A
7
6
5
ZCD
R12
4k/1%/0603
GND
VCC
GATE
R7
5k/1206
CS
GATE
MP4051
D3
BZT52C16/16V/5mA
R16
1M/0603
N
L
VCC
Figure 12—100VAC Input, Non-isolated High-side Buck Converter, Drive 12 LEDs in Series,
150mA LED Current for 6W LED Bulb Lighting
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
14
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
MULT COMP
ZCD
FB
GND
CS
VCC
GATE
MP4051
Figure 13—Universal Input, Non-isolated Low-side Buck-boost Converter, Drive 19 LEDs in
Series, 350mA LED Current for 21W LED Tube Lighting
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
15
MP4051—NON-ISOLATED OFFLINE LED CONTROLLER WITH ACTIVE PFC
PACKAGE INFORMATION
SOIC8
0.189(4.80)
0.197(5.00)
0.050(1.27)
0.024(0.61)
0.063(1.60)
8
5
0.150(3.80)
0.157(4.00)
0.228(5.80)
0.244(6.20)
0.213(5.40)
PIN 1 ID
1
4
TOP VIEW
RECOMMENDED LAND PATTERN
0.053(1.35)
0.069(1.75)
SEATING PLANE
0.004(0.10)
0.010(0.25)
0.0075(0.19)
0.0098(0.25)
0.013(0.33)
0.020(0.51)
SEE DETAIL "A"
0.050(1.27)
BSC
SIDE VIEW
FRONT VIEW
0.010(0.25)
0.020(0.50)
x 45o
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
GAUGE PLANE
0.010(0.25) BSC
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSIONS.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
0.016(0.41)
0.050(1.27)
0o-8o
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA.
6) DRAWING IS NOT TO SCALE.
DETAIL "A"
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.
MP4051 Rev. 1.01
1/21/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
16
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