|
|
PDF MP4021A Data sheet ( Hoja de datos )
| Número de pieza | MP4021A | |
| Descripción | Primary Side Control Offline LED Controller | |
| Fabricantes | MPS | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MP4021A (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
The Future of Analog IC Technology
MP4021A
Primary Side Control
Offline LED Controller with Active PFC
DESCRIPTION
The MP4021A is a primary-side–control offline
LED lighting controller that achieves high power
factor and accurate LED current for isolated
single-power-stage lighting applications in a
single SOIC8 package. The proprietary real-
current control method accurately controls LED
current from primary-side information. Eliminating
the secondary-side feedback components and
the optocoupler significantly simplifies the LED
lighting system design.
The MP4021A 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 lighting
applications.
The multi-protection features of MP4021A greatly
enhance system reliability and safety. The
MP4021A features over-voltage protection, short-
circuit protection, cycle-by-cycle current limiting,
VCC UVLO, and auto-restart over-temperature
protection.
FEATURES
• Real current control without secondary-
feedback circuit
• Typical ±1.5% load regulation
• Unique architecture for superior line
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
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 MP4021A is under patent pending.
TYPICAL APPLICATION
EMI
filter
Optional for wide output
voltage applications
+
+
1 MULT COMP 8
2
ZCD
FB/NC 7
3
VCC
GND 6
45
GATE CS
MP4021A
MP4021A Rev.1.04
www.MonolithicPower.com
7/5/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
1
1 page  
MP4021A—PRIMARY SIDE CONTROL OFFLINE LED CONTROLLER WITH ACTIVE PFC
PIN FUNCTIONS
Pin #
1
2
3
4
5
6
7
8
Name Pin Function
MULT
ZCD
VCC
GATE
CS
GND
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.
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 trigger 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.
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.
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.
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. 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.
Ground. Current return for the control signal and the gate drive signal.
FB/NC Feedback signal. Leave this pin floating (NC) for primary-side control.
COMP
Loop compensation input. Connect a compensation network to stabilize the LED drive and
maintain an accurate LED current.
MP4021A Rev.1.04
www.MonolithicPower.com
7/5/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
5
5 Page 
MP4021A—PRIMARY SIDE CONTROL OFFLINE LED CONTROLLER WITH ACTIVE PFC
FUNCTION DIAGRAM
N:1
EMI
filter
MULT
Multiplier
PWM/PFC
COMP
Current control
OTP
Protection
FB/NC
Real Current
Control
Latch off
or
Restart
GND
OVP
OCP
Zero Current
Detection
Zero current detection
GATE
Control Gate
driver
Current sense
Current
Sense
Current
LImit
CS
Power supply
UVLO
VCC
Power Supply
ZCD
Figure 1—MP4021A Function Block Diagram
MP4021A Rev.1.04
www.MonolithicPower.com
7/5/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet MP4021A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MP4021 | Primary Side Control Offline LED Controller | MPS |
| MP4021 | Pulse Motor Drive and Inductive Load Switching |  Toshiba Semiconductor |
| MP4021A | Primary Side Control Offline LED Controller | MPS |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |