臨界模式控制 功率因數校正控制器IC - BD7691FJ
作為AC/DC用功率因數校正轉換器（Power Factor Correction: PFC），本產品為所有需要改善功率因數的產品提供最佳系統。PFC部採用臨界模式（BCM），可透過Zero Current Detection降低開關損耗和雜訊。採用基於電阻的零電流檢測方式，無需ZCD用輔助繞組。
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規格:
FET
-
Controller Type
PFC
Vin1(Min.)[V]
10.0
Vin1(Max.)[V]
26.0
SW frequency(Max.)[kHz]
220.0
BR PIN
-
Channel
1
Light Load mode
No
EN
No
Thermal Shut-down
Yes
Under Voltage Lock Out
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
105
功能:
- Boundary Conduction Mode
- Low Power consumption
- VCCUVLO
- Resister detection for ZCD
- Switching loss reduction, noise reduction by ZCD
- Improving the efficiency by the max frequency control
- Dynamic and Static OVP by the VS pin
- High accuracy over current detection (±4%)
- Error amplifier input short protection
- Stable MOSFET gate drive by the Clamper
- Protection function by the OVP pin