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UCC28502N

UCC28502N
Mfr. #:
UCC28502N
설명:
Power Factor Correction - PFC BiCMOS PFC/PWM Comb Controller
수명 주기:
이 제조업체의 새 제품입니다.
데이터 시트:
UCC28502N 데이터 시트
배달:
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지불:
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추가 정보:
UCC28502N 추가 정보 UCC28502N Product Details
제품 속성
속성 값
제조사:
텍사스 인스트루먼트
제품 카테고리:
역률 보정 - PFC
RoHS:
Y
스위칭 주파수:
115 kHz
최소 작동 온도:
- 40 C
최대 작동 온도:
+ 85 C
장착 스타일:
구멍을 통해
패키지/케이스:
PDIP-20
포장:
튜브
키:
4.57 mm
길이:
24.33 mm
유형:
역률 보정 IC
너비:
6.35 mm
상표:
텍사스 인스트루먼트
상품 유형:
PFC - 역률 보정
공장 팩 수량:
1
하위 카테고리:
PMIC - 전원 관리 IC
단위 무게:
0.079719 oz
Tags
UCC28502, UCC2850, UCC285, UCC28, UCC2, UCC
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Step1: Vacuum Packaging with PL
Step1:
Vacuum Packaging with PL
Step2: Anti-Static Bag
Step2:
Anti-Static Bag
Step3: Packaging Boxes
Step3:
Packaging Boxes
*** Stop Electro
Power Factor Controller With Post Regulator, Current-mode, 1.2A, 120kHz Switching Freq-Max, BICMOS, PDIP20
***ser
Power Factor Correction (PFC) ICs BiCMOS PFC/PWM Comb Controller
***el Electronic
IC PFC CTR AV CURR 100KHZ 20DIP
***i-Key
IC PFC CTRLR AVERAGE CURR 20DIP
***as Instruments
The UCC2850x family provides all of the control functions necessary for an active power-factor-corrected preregulator and a second-stage dc-to-dc converter. The controller achieves near-unity power factor by shaping the ac input line current waveform to correspond to the ac input-line voltage using average current-mode control. The dc-to-dc converter uses peak current-mode control to perform the step-down power conversion. The PFC stage is leading-edge modulated while the second stage is trailing-edge synchronized to allow for minimum overlap between the boost and PWM switches. This reduces ripple current in the bulk-output capacitor.In order to operate with over three-to-one range of input-line voltages, a line feedforward (VFF) is used to keep input power constant with varying input voltage. Generation of VFF is accomplished using IAC in conjunction with an external single-pole filter. This not only reduces external parts count, but also avoids the use of high-voltage components, offering a lower-cost solution. The multiplier then divides the line current by the square of VFF. The UCC2850x PFC section incorporates a low offset-voltage amplifier with 7.5-V reference, a highly-linear multiplier capable of a wide current range, a high-bandwidth, low offset-current amplifier, with a novel noise-attenuation configuration, PWM comparator and latch, and a high-current output driver. Additional PFC features include over-voltage protection, zero-power detection to turn off the output when VAOUT is below 0.33 V and peak current and power limiting. The dc-to-dc section relies on an error signal generated on the secondary-side and processes it by performing peak current mode control. The dc-to-dc section also features current limiting, a controlled soft-start, preset operating range with selectable options, and 50% maximum duty cycle. The UCC28500 and UCC28502 have a wide PFC-UVLO threshold (16.5 V/10 V) for bootstrap bias supply operation. The UCC28501 and UCC28503 are designed with a narrow UVLO range (10.5 V/10 V) more suitable for fixed bias operation. The UCC28500 and UCC28501 have a narrow UVLO threshold for PWM stage (to allow operation down to 75% of nominal bulk voltage), while the UCC28502 and UCC38503 are configured for a much wider operation range for the PWM stage (down to 50% of bulk nominal voltage). Available in 20-pin N and DW packages.
부분 # 설명 재고 가격
UCC28502N
DISTI # UCC28502N-ND		IC PFC CTRLR AVERAGE CURR 20DIP
RoHS: Compliant
Min Qty: 100
Container: Tube		Limited Supply - Call
    UCC28502NG4
    DISTI # UCC28502NG4-ND    		IC PFC CTRLR AVERAGE CURR 20DIP
    RoHS: Compliant
    Min Qty: 100
    Container: Tube    		Limited Supply - Call
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      		 신규 및 오리지널
      유효성
      재고:
      Available
      주문 시:
      4500
      수량 입력:
      UCC28502N의 현재 가격은 참고용이며 최상의 가격을 원하시면 판매팀 [email protected]으로 문의 또는 다이렉트 이메일을 보내주십시오.
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