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PDF MBI6812 Data sheet ( Hoja de datos )
| Número de pieza | MBI6812 | |
| Descripción | High Power Factor AC/DC LED Driver | |
| Fabricantes | Macroblock | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MBI6812 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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Macroblock
Preliminary Datasheet
MBI6812
High Power Factor AC/DC LED Driver
Features
Constant current LED driver
Primary side regulation without photocoupler
Built-in active power factor correction
Quasi-resonant switching
Universal input voltage range
Support up to 50W output
Full protection: Thermal shutdown
VDD over voltage (OVP)
Under voltage lock-out (UVLO)
LED open-/short- circuit
Current sensing resistor open/short-circuit
Compensating capacitor open/short-circuit
Available in SOP-8 package
Product Description
MBI6812 is a universal input AC-DC converter designed to deliver constant current with primary side regulation
(PSR) control. The built-in active power factor correction circuit maintains high power factor over a wide input
voltage range. MBI6812 is optimized for applications of output power up to 50 Watt, and the efficiency is enhanced
with quasi-resonant switching technique. MBI6812 is also featured with under voltage lock-out (UVLO), over
temperature protection (OTP), LED open-circuit protection and LED short-circuit protection to protect the converter
from being damaged accidentally. MBI6812 is specifically designed with current sensing resistor short protection to
prevent MOSFET over-current and transformer saturation caused by manufacturing defect such as solder splash or
abnormal operation such as accidental short-circuit by earthquake.
Applications
T8 light tube LED alternative solutions
E26/E27 light bulb LED alternative solutions
PAR light LED alternative solutions
External LED power supply
©Macroblock, Inc., 2014
6F-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30072, R.O.C.
TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail: [email protected]
- 1 - March 2014, V.1.00
1 page  
MBI6812
High Power Factor AC/DC LED Driver
Electrical Characteristics
Test condition: VDD=20V, CIN=10μF, and TA=25°C unless otherwise specified.
Characteristics
Symbol
Conditions
Supply Voltage
Continuous operating voltage
Start-up voltage
Under-voltage lockout
VDD over-voltage protection
Operating current
Stand-by current
VOP
VSTART_UP
VUVLO
VDD-OVP
IDD-OP
IDD-ST
start-up
UVLO
CL=1nF, FSW=25kHz
IDD before start-up
Error Amplifier
Reference Voltage
COMP Pre-charge Voltage
COMP Clamping Voltage
Maximum COMP Charging Current
VREF
VPC
VCLAMP
ICOMP
Current Sense
Propagation delay to GATE output
Leading edge blanking time
Threshold voltage for current limit
TPD
TLEB_CS
VCSTH
Voltage Sense
Open protection threshold
VS Leading Edge Blanking
VS Pin Sourcing Current
VS-open
TLEB_VS
ISource_VS
Gate Driver
Maximum duty ratio
Output high voltage
Output low voltage
Rising time
Falling time
Maximum On-time
Minimum On-time
Maximum Off-time
Minimum Off-time
Maximum Switching Frequency
DMAX
VOH
VOL
TR
TF
TON_Max
TON_min
TOFF_Max
TOFF_min
FSwitch_Max
20%-80% of swing
20%-80% of swing
Thermal Shutdown
Thermal shutdown threshold
TSD Hysteresis=30℃
Min Typ Max Unit
14 V
14.6 16 17.6 V
5.8 6.5 7.2 V
19.5 21.5 23.5 V
- 2.8 5 mA
- 30 50 uA
0.588 0.6 0.612 V
- 1.4 - V
- 3.2 - V
- 60 - uA
- 100 200 ns
- 170 - ns
0.5 0.6 0.7 V
1.4 1.5 1.6 V
1.0 us
- 1.2
mA
- 50 - %
12 V
- - 0.5 V
- 50 100 ns
- 40 80 ns
11.5 us
200 ns
36 us
1.5 us
120 kHz
140 155 170 °C
- 5 - March 2014, V1.00
5 Page 
MBI6812
High Power Factor AC/DC LED Driver
Current Sensing Resistor Open/Short Protection
MBI6812 is designed with current sensing resistor open/short protection to prevent extreme fault conditions from
irrecoverably damaging the converter, such as cold welding or solder splash during manufacturing process, and
accidental short circuit caused by earthquake or abnormal vibration during normal operations.
Compensating Capacitor Open/Short Protection
In normal operation without additional protection, floating or short-circuit of the compensating capacitor would lead
to unexpected behavior of the internal error amplifier, which primarily guarantee the close-loop stability. MBI6812
specially provides compensating capacitor open/short protection against these fault conditions from destabilizing
the converter.
- 11 -
March 2014, V1.00
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MBI6812.PDF ] | |
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