BD7690FJ
临界模式控制 功率因数校正控制器IC
BD7690FJ
BD7690FJ
临界模式控制 功率因数校正控制器IC
作为AC/DC用功率因数校正转换器（Power Factor Correction: PFC），本产品为所有需要改善功率因数的产品提供优良系统。PFC部采用临界模式（BCM），可通过Zero Current Detection降低开关损耗和噪声。采用基于电阻的零电流检测方式，无需ZCD用辅助绕组。
主要规格
特性：
Controller Type
PFC
Channel
1
Zero Detect
Auxiliary Winding
W/W Input IEC61000-3-2 Class-C Support
No
Vin1 (Typ.)[V]
2.5
Reference Voltage Accuracy (%)
1.5
Brown Out
No
VCC Discharge
No
OVP System
1 way
FET
-
VS Pin Over Voltage Protection (L/A)
Auto Restart
Vin1(Max.)[V]
26
VS Dynamic OVP (L/A)
Auto Restart
VS Short Protection (L/A)
Auto Restart
BR PIN
No
SW Frequency (Max.)[kHz]
220
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
Package Size [mm]
4.9x6 (t=1.65)
特点：
- Boundary Conduction Mode
- Low Power consumption
- VCCUVLO
- The ZCD detection by auxiliary winding
- 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
- Restart timer
- Stable MOSFET gate drive by the Clamper
