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UCC28502NG4

UCC28502NG4
Mfr. #:
UCC28502NG4
Description:
IC PFC CTRLR AVERAGE CURR 20DIP
Lifecycle:
New from this manufacturer.
Datasheet:
UCC28502NG4 Datasheet
Delivery:
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ECAD Model:
More Information:
UCC28502NG4 more Information UCC28502NG4 Product Details
Product Attribute
Attribute Value
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
***ponent Stockers USA
1.2 A POWER FACTOR CONTROLLER WITH POST REGULATOR 120 kHz SWITCHING FREQ-MAX PDIP20
***ser
Power Factor Correction (PFC) ICs BiCMOS PFC/PWM Comb Controller
***i-Key
IC PFC CTRLR AVERAGE CURR 20DIP
***eco
BICMOS PFC/PWM COMBINATION CONTROLLER
***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.
Part # Description Stock Price
UCC28502NG4
DISTI # UCC28502NG4-ND		IC PFC CTRLR AVERAGE CURR 20DIP
RoHS: Compliant
Min Qty: 100
Container: Tube		Limited Supply - Call
    Image Part # Description
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    Mfr.#: UCC2810DWTR/1

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    Mfr.#: UCC283TD-ADJ

    OMO.#: OMO-UCC283TD-ADJ-1190

    		 Voltage Regulator, Adjustable, +1.5 TO +8.5V, 5 Pin, Plastic, SIP
    UCC28950PW

    Mfr.#: UCC28950PW

    OMO.#: OMO-UCC28950PW-TEXAS-INSTRUMENTS

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    Availability
    Stock:
    Available
    On Order:
    3500
    Enter Quantity:
    Current price of UCC28502NG4 is for reference only, if you want to get best price, please submit a inquiry or direct email to our sales team sales@omo-ic.com
    Reference price (USD)
    Quantity
    Unit Price
    Ext. Price
    1
    $0.00
    $0.00
    10
    $0.00
    $0.00
    100
    $0.00
    $0.00
    500
    $0.00
    $0.00
    1000
    $0.00
    $0.00
    Due to semiconductor in short supply from 2021,below price is the Normal price before 2021.please send inquire to confirm.
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