Power Supplies Manufacturers

QLF12 12W High Quality AC-DC Switch power modules

The productis easy to install and can be mounted on the main board of socket (AC inputVH3.96-3A2/DC output VH3.96-2A). The plug can be directly inserted and used, and the welding hole can be reserved.

  • Brand:

    QINXPOWER
  • Model:

    QLF12A
  • Input Voltage:

    85-264V AC or 110-370V DC.
  • Working Mode:

    AC-DC
  • Power:

    12W
Products description

QLF12 12W High Quality AC-DC Switch power modules

Product features

  • Fixed mounting holes are arranged at the four corners to prevent the product from power failure due to movement/vibration. The straight length of the fixed holes is 4 mm.
  • International Universalinput voltage: 85-264V AC or 110-370V DC.
  • High efficiency, highpower density, low output ripple noise
  • High isolation between input and output
  • Over current protection, shortcircuit protection and temperature protection.
  • Output built-infilter without external filter circuit.
  • 3 years of quality assurance.
Item 

Condition

Common models of this series we have (we can customize any products with different output voltage and current

or other requirements according to customer’s requirements)

QLF12A-05QLF12A-09QLF12A- 12QLF12A- 15QLF12A-24
1、Input Features
AC Input(VAC)85-264VAC
DC Input(VDC)110-370VDC
Frequency Range(Hz)47-63Hz
Input Current(mA)0.5/ 115VAC   0.25/230VAC
Surge current(A)Cold Boot:10A/230VAC
Efficiency(TYP.)75%76%78%78%81%
Stand-by power consumption(mW)≤ 150mW/230VAC
2 、Output Features
Output Voltage(VDC)5V9V12V15V24V
Output voltage accuracy± 1%
Rated current(ADC)2A1.35A1A0.8A0.5A
Rated power(W)10W12W12W12W12W
Ripple&Noise(mv p-p)Rated input voltage, 20MHz bandwidth≤ 100mV
Linear adjustment rateFull-load± 1%
Load regulation10- 100% Load±3%
Start up and rise timeFull-load2000ms ,30ms/ 115VAC    1000ms ,30ms/230VAC
Retention time(ms)Full-load16ms/ 115VAC  50ms/230VAC
Overload

protection

Rated input voltage115%- 150% of the rated output power
Protection mode: hiccup mode, auto-response after removal of abnormal
Short-circuit protection 

Rated input voltage

Automatic recovery after long-term short circuit
Over-current protection≥ 1. 1 Times Io
Start delay time(ms) 

Vin :230VAC

500ms
Power-off protection time(ms)20ms
3 、General Features
Working      temperature(C)/-30-70C
Working    humidity(RH)/20-90%RH ,non-condensing
temperature

coefficient

/±0.02%/C
Storage temperature and humidity-40~+85C 10-95%RH
Switching frequency(KHz)20-65KHz
Isolation     voltage(VAC)Input-to-output,  test lasted 60s ,≤

5mA

 

3000VAC

Insulation     resistance(MΩ)Input-to-output,500VDC100MΩ
Leakage   current(mA)500VDCInput to output     ≤ 1mA/RMS
MTBF@25C215000h
Safety level/Adaptation:CLASS B
Vibration resistance/10—500Hz 2G 10 minutes/cycle. 60 minutes each for X, Y and Z.
Electro-magnetic compatibility/Adaptation:EN55022(CISPR22) Class B  EN61000-3-2-3
                                   Remarks
  1.  Except for special instructions, the parameters of this specification are measured at 230VAC input, rated load and 25C.
  2. Measurement of ripple and noise: Using a  12” twisted pair, and the terminal has two capacitors, 0. 1uF and 10uF in parallel. Measured at 20MHz bandwidth.
  3. Accuracy: Including errors, linear adjustment rate and load adjustment rate.
  4. The power supply should be regarded as part of the components in the system, and electro-magnetic compatibility related confirmation should be carried out with the terminal equipment.
  5.  Reduced output is required under low input voltage. Please refer to the reduction graph.

Output Parts

Output VoltageC1C2TVS
5V47uF/35V1uF/50VSMBJ7.0A
9VSMBJ12.0A
12VSMBJ15A
15VSMBJ18.0A
24VSMBJ28A

Remarks:

  • C1:Connecting/couplingfilter electrolytic capacitors, high frequency and low resistance capacitors are recommended. Capacitance withstand voltage drop more than 75%, remove noise caused by connectors.
  • C2:Removinghigh frequency noise for Ceramic capacitors
  • TVS:Itis recommended to protect the back-stage circuit when the power supply is abnormal.

EMC Solution–Recommended Circuit

EMC Solution--Recommended Circuit

Input Parts

Original Bit                Number/Recommended DeviceEffectsRecommended values
R1:Discharge resistanceSuppression of differential mode interference1MΩ 1/2W
C5:X2 Capacitance0.33uF/275VAC
NF:common mode chokeCommon mode interference is suppressed to improve the anti-interference

ability of equipment and the reliability of the system.

10 mH -30 mH

Product Packaging and Pin Definition Diagram

POWER SUPPLY PCB SIZE

Product selection and Notes:

1.Please refer to the specifications in detail for selection and use, otherwise the reliability of power supply will not be guaranteed.

2.All parameters of this specification are measured according to the internal standards of our company.

3.It is suggested that the load power of the power supply should not exceed 80% of the rated power of the power supply.

4.With multi-output power supply, each output circuit must be loaded and used at the same time according to the corresponding ratio.

5.Our company can provide customized products.

6.We reserve the right to change specifications without prior notice.

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