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PDF MP4030A Data sheet ( Hoja de datos )
| Número de pieza | MP4030A | |
| Descripción | Primary-Side-Control Offline LED Controller | |
| Fabricantes | MPS | |
| Logotipo |  |
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The Future of Analog IC Technology
MP4030A
TRIAC-Dimmable, Primary-Side-Control
Offline LED Controller with Active PFC
DESCRIPTION
The MP4030A is a TRIAC-dimmable, primary-
side-control, offline LED lighting controller with
active PFC. It can output an accurate LED
current for an isolated lighting application with a
single-stage converter. The proprietary real-
current-control method can accurately control the
LED current using primary-side information. It
can significantly simplify LED lighting system
design by eliminating secondary-side feedback
components and the optocoupler.
The MP4030A implements power-factor
correction and works in boundary-conduction
mode to reduce MOSFET switching losses.
The MP4030A has an integrated charging circuit
at the supply pin for fast start-up without a
perceptible delay.
The proprietary dimming control expands the
TRIAC-based dimming range.
The MP4030A features multiple protections
including over-voltage protection (OVP), short-
circuit protection (SCP), primary-side over-
current protection (OCP), supply-pin under-
voltage lockout (UVLO), and over temperature
protection (OTP). All of which not only simplifies
circuit design but also enhances system reliability
and safety greatly. All fault protections feature
auto-restart.
The MP4030A is available in an 8-pin SOIC
package.
FEATURES
• Primary-Side-Control without Requiring a
Secondary-Side Feedback Circuit
• Internal Charging Circuit at the Supply Pin for
Fast Start-Up
• Accurate Line & Load Regulation
• High Power Factor and Improved THD
• Flicker-Free, Phase-Controlled TRIAC
Dimming with Expanded Dimming Range 1%
to 100% Full Range
• Operates in Boundary Conduction Mode
• Cycle-by-Cycle Current Limit
• Primary-Side, Over-Current Protection
• Over-Voltage Protection
• Short-Circuit Protection
• Over-Temperature Protection
• Available in an 8-Pin SOIC Package
APPLICATIONS
• Solid-State Lighting, including:
• 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.
MP4030A Rev.1.01
www.MonolithicPower.com
9/27/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
1 page  
MP4030A—PRIMARY-SIDE-CONTROL, OFFLINE, LED CONTROLLER WITH PFC
ELECTRICAL CHARACTERISTICS (continued)
TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Sink Current at TRIAC Dimming OFF ISink_Dim
Current Sense Comparator
Leading-Edge-Blanking Time
Leading-Edge-Blanking Time for
OCP
tLEB
tLEB_OCP
OCP Threshold
Current-Sense Upper Clamp Voltage
VOCP
VS_Clamp_H
Current-Sense Lower Clamp Voltage VS_Clamp_L
Min
60
575
2.63
2.2
0.08
Zero-Current Detector
Zero-Current Detection Threshold
Zero-Current Detection Hysteresis
Zero-Current Detection LEB
Over-Voltage Threshold
OVP Detect LEB
Minimum OFF Time
Starter
Start Timer Period
Internal Main MOSFET
Breakdown Voltage
Drain-Source On-Resistor
VZCD_T
VZCD_HY
tZCD_LEB
VZCD_OVP
tOVP_LEB
tOFF_MIN
Falling Edge
Starts at Gate Turn Off,
VS≥0.25
Starts at Gate Turn Off,
VS<0.25
Starts at Gate Turn Off
ΤStart
BVDSS_Main
RDS(ON)_Main
VGS=0
ID=100mA
Internal Fault Pull Up MOSFET
Breakdown Voltage
Continue Drain Current
BVDSS_D-VCC VGS=0
ID_D-VCC
Internal Dimming Pull Down MOSFET
Breakdown Voltage
Drain-Source On-Resistor
Thermal Shutdown
Thermal Shutdown Threshold
Thermal Shutdown Recovery
Hysteresis
BVDSS_DP
RDS(ON)_DP
VGS=0
ID=50mA
TSD
THYS
Guaranteed by
Characterization
Guaranteed by
Characterization
Notes:
5) The multiplier output is given by: Vs=K•VMULT• (VCOMP-1.5)
0.32
510
1.8
0.85
5.1
1.35
3.6
90
30
200
30
30
24
Typ
70
685
0.7
2. 73
2. 3
0.1
0.35
550
2.5
1.2
5.4
1.85
5.1
115
260
12
28
150
30
Max
80
795
2.83
2.4
0.13
0.38
590
3.1
1.5
5.7
2.35
6.6
140
320
32
Units
µA
ns
tLEB
V
V
V
V
mV
µs
µs
V
µs
µs
µs
V
mΩ
V
mA
V
Ω
°C
°C
MP4030A Rev.1.01
www.MonolithicPower.com
9/27/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
5 Page 
MP4030A—PRIMARY-SIDE-CONTROL, OFFLINE, LED CONTROLLER WITH PFC
OPERATION
The MP4030A is a TRIAC-dimmable, primary-
side-controlled, offline, LED controller designed
for high-performance LED lighting. The MP4030A
can accurately control the LED current using
real-current-control based on primary-side
information. It can also achieve a high power
factor to eliminate noise on the AC line. The
integrated VCC charging circuit can achieve fast
start-up without any perceptible delay. The
MP4030A is suitable for TRIAC-based dimming
with an extended dimming range.
Boundary-Conduction Mode
During the external MOSFET ON time (tON), the
rectified input voltage applied across the primary-
side inductor (LP) increases the primary current
increases linearly from zero to the peak value
(IPK). When the external MOSFET turns off, the
energy stored in the inductor forces the
secondary side diode to turn on, and the inductor
current decreases linearly from the peak value to
zero. When the current decreases to zero, the
parasitic resonance caused by the inductor and
the combined parasitic capacitances decreases
the MOSFET drain-source voltage, which is also
reflected on the auxiliary winding (see Figure 2).
The zero-current detector (ZCD) generates the
external MOSFET turn-on signal when the ZCD
voltage falls below 0.35V after a blanking time
and ensures the MOSFET turns on at a relatively
low voltage (see Figure 3).
VDS
VAC Line + N V OUT
VAC Line
Turn ON
Inductor
current
IP
IS / N
t OFF
t ON
VZCD
0
Figure 2: Boundary-Conduction Mode
Auxiliary Winding
+
Vcc
RZCD1
ZCD
0.35V
RZCD2
CZCD
Figure 3: Zero-Current Detector
As a result, there are virtually no primary-switch
turn-on losses and no secondary-diode reverse-
recovery losses. This ensures high efficiency and
low EMI noise.
Real-Current Control
The proprietary real-current-control method
allows the MP4030A to control the secondary-
side LED current based on primary-side
information. The output LED mean current can
be approximated as:
IO
=
N ⋅ VREF
2 ⋅ RS
Where:
• N is the turn ratio of the primary side to the
secondary side,
• VREF is the reference voltage (typically value
is 0.403V),
• RS is the sense resistor between the
MOSFET source and GND.
Power-Factor Correction
The MULT pin connects to the tap of a resistor
divider from the rectified, instantaneous, line
voltage. The multiplier output is also sinusoidal.
This signal provides the reference for the current
comparator against the primary-side-inductor
current, which shapes the primary-peak current
into a sinusoid with the same phase as the input
line voltage. This achieves a high power factor.
MP4030A Rev.1.01
www.MonolithicPower.com
9/27/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet MP4030A.PDF ] | |
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