3-Segment AC Input HV LED Driver PT6923 datasheet.pdf
3-Segment AC Input HV LED Driver bulb scheme PT6923.pdf
3-Segment AC Input HV LED Driver fluorescent tube scheme PT6923.pdf
PT6923 DESCRIPTION：
PT6923 is a special current regulator to drive HV LED. The proprietary 3-Segment driving topology will improve power factor, THDI and efficiency. EMI issue will be avoided by special technology during segment switching. Few external components design is very flexible in many compact size applications.
PT6923 supports maximum 400V input voltage that ensures the high reliability for HV LED lighting. LED open/short is protected by PT6923. The high voltage will be absorbed by PT6923 itself. LEDs will never face high voltage problem.
PT6923 is integrated temperature compensation function. When internal junction temperature is higher than 130℃, PT6923 will decrease the output current linearly. The output current will be zero when internal junction temperature reaches 150 ℃. This protection method effectively avoids the flicker problem during abnormal environment temperature.
PT6923 FEATURES：
●5V~400V Operating Voltage, 600V ultra high voltage device integration
●Maximum 60mA Output Current
●±5% Current Accuracy
●Proprietary 3-Segment Driving Technology，PT6923A three segment of the current difference is small, high utilization rate of LED.
●Low THDI
●High Power Factor
●Few External Components ,No EMI
●High Efficiency
●Electrical Capacitor Needless
●TRIAC Dimming Compatible
●LED Open/Short Protection
●Temperature Compensation
-When TJ>130℃, output current will decrease.
-Output current will be zero when TJ>150℃
●TO252-5L Package，Thermal resistance of 80 ℃ /W (general can bear 1.5W power, the maximum is 2W)
PT6923 TYPICAL APPLICATION ：
PT6923 BLOCK DIAGRAM ：
PT6923 Typical application parameters：
Electrical parameters
| Electrical specifications
|
Input voltage
| 180~265VAC
|
The output load voltage
| "3014" LED lamp The three section lamp number of 47/17/16 stars |
Output power
| 8W @ 220VAC
|
Efficiency
| 86.8% @ 220VAC
|
PF
| >0.96
|
THD
| <30%
|
| Abnormal protection | Provide open circuit, short circuit, over temperature protection
|
Ultra high pressure linear drive recommended IC-PT6923 selection scheme (9W bulb scheme)
| Model | Input voltage(V) | Input power(W) | Output voltage(V) | Output current(mA) | Output power（W） | Efficiency（%） | PF | THDI（%） | The feature of the scheme |
| PT6923A | SSC 22V/20mA "5630" HV-LED Lamp 24 star；one，two，three section Amount of 8S8P/2S2P/2S2P respectively
| The three section (87%, 93%, 100%) linear constant, without capacitor, PF>0.95, THDI<30%, <>80~90% lamp efficiency, high utilization rate |
| 200 | 7.95 | 270 | 34.1 | 7.19 | 90.4 | 0.96 | 29.0 |
| 220 | 9.34 | 270 | 37.6 | 8.27 | 88.5 | 0.97 | 25.4 |
| 240 | 10.56 | 270 | 39.8 | 8.90 | 84.2 | 0.97 | 23.5 |
PT6923
| SSC 22V/20mA "5630" HV-LED Lamp 24 star；one，two，three section Amount of 7S8P/2S2P/2S2P respectively
| The three section (33%, 67%, 100%) linear constant, without capacitor, PF>0.95, THDI<30%, <>80~90% efficiency |
| 200 | 7.77 | 270 | 31.1 | 7.13 | 91.7 | 0.739 |
|
| 220 | 9.67 | 270 | 35.5 | 8.6 | 88.9 | 0.728 |
| 240 | 11.45 | 270
| 38.9 | 9.85 | 86 | 0.711 |
Typical application of PT6923 products: LED bulb lamp, LED lamp, LED fluorescent tube:
PT6923, PT6923A product advantage:
◆ linear control, no EMI problems, few elements, easy integration, especially suitable for high voltage LED driver, a variety of protection, to ensure the reliability of.
◆ PT6923 a good balance between the power factor and the LED current ripple, in the case of PF>0.7, LED current ripple can be ± 50%
Keywords: PT6923 PTC Pu Cheng technology Taiwan Pu Cheng technology constant current diode LED drive chip high voltage LED driver PT6923 three segment linear HV LED driver with low cost and high voltage LED driving without a transformer without electrolysis capacitor without EMI interference of LED short circuit protection over temperature protection without electrolytic capacitor LED bulb lamp high voltage LED driving linear constant cost very low few element SM2087 SM2082B BP5118
