Megmeet MCP300WL Series LED Display Power Supply

Megmeet MCP300WL-5.0 Production Specification

 1.   Megmeet MCP300WL-5.0 Electrical Specification :

1.1   Block diagram

The power supply unit consists of input stage, PFC stage, DC/DC stage, and control circuit. Input stage includes surge protect circuit, EMC circuit, soft-start-up circuit, etc. This circuits help to meet EMC regular of EN55022 etc. DC/DC stage delivers a desired output voltage. Control circuit carries out many functions as OVP, OLP, OTP, loop control.

Main components functions are described as below:

·BG100- input rectifier
·C101- Input Capacitor
·Q100- PFC Mosfet
·D101- PFC Output Diode
·C101- PFC Output Capacitor
·Q201&Q204- DC/DC Mosfet
·Q200&Q205- DC/DC Output Synchronic-Rectifiers
·C200- Output Capacitor
·U- Isolated Opt couple for feedback control

1.2    Input Electrical Characteristics

                                     Table 1

Input voltage range	90Vac to 264Vac
Normal voltage range	100Vac to 240Vac
Frequency range	47Hz-63Hz
Max input ac current	4.5A       max. at full load condition
Inrush current (cold state)	60A typ. peak@230Vac
Efficiency	87.5% min@220Vac, full Load
Leakage Current	Less Than 3.5 mA,@ 240Vac input
Normal output power	300W
Input Fuse	T5AH/250Vac
Power Factor	>0.95@ full Load 220Vac input（Universal AC Input With Active PFC）

1.3.1      Output Voltage & Current Regulation

                                                  Table 2

Output Voltage	Regulation	Min. current	Rated current
+5V	±5%	0A	60A

Note:* The testing of peak current shall be
performed under the peak current pulse width within 100ms conditions.

1.3.2       Input voltage Derating Guideline

 

1.3.3       Operate temperature rating Guideline

 

1.3.4
DC Output Ripple & Noise.

Table 3

Output Voltage	Ripple & Noise (Max.)
+5V	150mVp-p@ 25℃
	300mVp-p@-40℃

Note: 1) Ripple & Noise test: Ripple & Noise bandwidth is set to 20MHz.

2) Use a 0.1uF ceramic capacitor in parallel with a 10uF electrolytic capacitor at output connector terminals for
ripple & noise measurements.

1.3.5     Output Transient Response.

                       Table 4. Test condition.

Voltage Tolerance Limit	Slew Rate	Load Change
+5V /±5%	1A/uS	25% to 50% load and 50% to 75% load

Note: 1) Load change repetition rate: 50Hz to 100Hz. 2)  Ripple & Noise test: Ripple & Noise bandwidth is set to 20MHz. 3)  Use a 0.1uF ceramic capacitor in parallel with a 10uF electrolytic capacitor at output connector terminals for ripple & noise measurements.

1.3.6      Hold-Up Time

                         Table 5

Output Voltage	100Vac input	220Vac input
+5V	≥10 mS	≥10 mS

Note: 1) All of dc output at full load.  2)  Use a 0.1uF ceramic capacitor in parallel with a 10uF electrolytic capacitor at output connector terminals for ripple & noise measurements.

1.3.7   DC Output Overshoot During Turn-On & Turn-Off

                       Table 6

Output Channel	Output(V)	Overshoot voltage(V)
		Turn-on	Turn-off

+5V

+5V

≤10%

≤10%

Note:     All of dc output current from Min. to Max.

1.3.8     DC output voltage rise time

                       Table 7

Output Voltage	120Vac input&Full Load	220Vac input&Full Load
+5V	≤100 mS	≤100mS

Note: The rise time measured is when the output voltages rise from10% to 90% of specified output voltage Vout observed
on the channel waveform.

 1.3.9 Power on delay time 

Table 8

Output Voltage	220Vac input@ 25℃	220Vac input@ -10 ℃
+5V	≤3S	≤5S

Note: The Power delay time measured is when AC power on to 90% of specified output voltage observed on the channel
waveform.

1.1   Protection

 

1.4.1  DC Output Overcurrent Protection

                        Table 9

Output Voltage	Over Current	Comments
+5V	>65A Typ.	Turn off

Note: The over-current protection should be tested at other load rating.

1.4.2  DC Output Short Circuit Protection

                         Table 10

Output Voltage	Comments
+5V	Turn off

 

1.4.3  Over voltage Protection

                          Table 11

Output Voltage	Comments
+5V	6.5V Max.

Note: The power supply shall restart after recycling power.

1.4.4  OTP

OTP	Comments
>70℃	Self-recovery/, 220VAC@4.6V/50A

2.   Isolation

       2.1   Insulation Resistance

Table 12

Input To Output	DC500V 10 MΩ min. (at room temperature)
Input To FG	DC500V 10 MΩ min. (at room temperature)
Output To FG	DC500V 10 MΩ min. (at room temperature)

2.2
Dielectric Strength

                           Table 13

Input To Output			3000Vac 50Hz 1minute ≤10mA
Input	To	FG	1500Vac 50Hz 1minute ≤10mA
Output	to	FG	500V	DC 1minute ≤10mA

Notes: Input line (L&N) should be shorted, and all output should be Shorted.

3.   Safety The power supply shall comply with the following criterion:

1) UL60950/IEC60950/EN60950

2) GB4943-2001

4.   EMC

       4.1   EMI

The power supply shall comply with the following criterion:

1)   Conduction Emission: *EN55032, Class B *FCC PART15    Class B

2)   Radiated Emission:   *EN55032, Class B;  *FCC PART15    Class B

Note: Megmeet can work together with customer to modify the power and the system to meet above criterion.

4.2   EMS

The power supply shall comply with the following criterion:

1)  ESD *GB17626.2-1998/IEC61000-4-2-Level 3

2)  EFT *GB17626.4-1998/IEC61000-4-4-Level 3

3)  SURGE *GB17626.5-1998/IEC61000-4-5-Level 3

4） DIP *GB17626.11-1998/IEC61000-4-11

Fall to	Drop time	Performance judgment
0％Ut	10ms	B
70%Ut	500ms	C
40%Ut	200ms	C
0%Ut	5000ms	C

5） Lighting     NOT APPLICABLE /

5.    Environmental Requirement

 5.1    Temperature

*  Operating: -40℃ to +60℃

Note:   the power can power on and work @ -40℃

*  Storage: -40℃ to +85℃.

5.2   Humidity

*  Operating: From 10% to 90% relative humidity (non-condensing).

*  Storage: From 5 to 95% relative humidity (non-condensing).

5.3   Altitude

*  Operating: -60 to      5000 m

*  Storage: up to 5000 m

5.4   Cooling Method

                       * Ventilation cooling.

5.5   Vibration

                      * 10-55Hz, 19.6m/s²(2G), 20minutes each along X, Y and Z axis.

5.6    Shock

                      * 49m/s²(5G),11ms, once each X, Y and Z axis.

6.    Dimension: 210mm X80mm X 31mm (L*W*H).

7.    Weight: 700 g

8.   MTBF: The MTBF shall be at least 150, 000 hours at 25 ℃, full load and normal input condition

     9.Picture(3D)

     10.  Power supply mount dimension:

     11. Request for the burn-in test.We recommend that the Power Supply should be mounted tightly with the heatsink described as the following heatsink drawing while the products burn in at 40℃ and 220Vac input.