UCC38500DWTRG4

Mfr. #:: UCC38500DWTRG4
描述:: IC PFC/PWM CONTROLLER 20SOIC
生命週期:: 製造商新產品
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產品屬性
屬性值

製造商: 德州儀器

產品分類: PMIC - PFC（功率因數校正）

系列: -

打包: 捲帶 (TR) 替代包裝

包裝盒: 20-SOIC (0.295", 7.50mm Width)

工作溫度: 0°C ~ 70°C

安裝型: 表面貼裝

電壓供應: 9.7 V ~ 18 V

供應商-設備-包: 20-SOIC

頻率切換: 100kHz

模式: 平均電流

當前啟動: 150μA

Tags: UCC38500D, UCC38500, UCC3850, UCC385, UCC38, UCC3, UCC

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Quality Guarantees

We provide 90-360 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.
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Step1:
Vacuum Packaging with PL

Step2:
Anti-Static Bag

Step3:
Packaging Boxes

UCC38500DWTRG4 描述

***et Europe: Power Factor Correction PWM CONTRLR 0.15mA 115KHz 20-Pin SOIC T/R

***ark: Power Factor Controller IC; Frequency:0.2MHz; Supply Voltage Max:18V; Package/Case:20-SOIC; No. of Pins:20; Operating Temperature Range:0°C to +70°C; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes ;RoHS Compliant: Yes

***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.

Market price

型號	描述	庫存	價格
UCC38500DWTRG4 DISTI # UCC38500DWTRG4-ND	IC PFC/PWM CONTROLLER 20SOIC RoHS: Compliant Min Qty: 2000 Container: Tape & Reel (TR)	Limited Supply - Call
UCC38500DWTRG4 DISTI # 595-UCC38500DWTRG4	Power Factor Correction - PFC BiCMOS PFC/PWM Comb Controller RoHS: Compliant	0

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