功率因数校正 - PFC
250 kHz
SOIC-16
0 C to + 70 C
企业名:深圳市中立信电子科技有限公司
类型:贸易/代理/分销
电话:
0755-23956688
0755-23956688
手机:13410226883
联系人:叶先生/王先生
邮箱:sales@zlxele.com
地址:广东深圳深圳市福田区彩田路彩虹新都大厦彩荟阁7A室
1 Features
1• Controls Boost Preregulator to Near-Unity Power
Factor
• Limits Line Distortion
• World Wide Line Operation
• Overvoltage Protection
• Accurate Power Limiting
• Average Current Mode Control
• Improved Noise Immunity
• Improved Feed-Forward Line Regulation
• Leading Edge Modulation
• 150-μA Typical Start-Up Current
• Low-Power BiCMOS Operation
• 12-V to 17-V Operation
• Frequency Range of 6 kHz to 220 kHz
2 Applications
• PC Power
• Consumer Electronics
• Lighting
• Industrial Power Supplies
• IEC6100-3-2 Compliant Supplies Less Than
300 W
3 Description
The UCC3817A and the UCC3818A family provides
all the functions necessary for active power factor
corrected preregulators. The controller achieves near
unity power factor by shaping the ac input line current
waveform to correspond to that of the ac input line
voltage. Average current mode control maintains
stable, low distortion sinusoidal line current.
Designed in Texas Instrument's BiCMOS process, the
UCC3817A/UCC3818A offers new features such as
lower start-up current, lower power dissipation,
overvoltage protection, a shunt UVLO detect circuitry,
a leading-edge modulation technique to reduce ripple
current in the bulk capacitor and an improved, lowoffset
(±2 mV) current amplifier to reduce distortion at
light load conditions.
企业名:深圳市中立信电子科技有限公司
类型:贸易/代理/分销
电话:
0755-23956688
0755-23956688
手机:13410226883
联系人:叶先生/王先生
邮箱:sales@zlxele.com
地址:广东深圳深圳市福田区彩田路彩虹新都大厦彩荟阁7A室