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UC3855BDWTR The Texas Instruments UC3855BDWTR is a PFC controller designed for high power, high frequency boost converters. It features average current mode control and operates up to 500kHz.
Mfr Part #:

UC3855BDWTR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3855BDWTR is a PFC controller designed for high power, high frequency boost converters. It features average current mode control and operates up to 500kHz.
✓ Total Stock: 146 pcs
$ Price Range: $0.75

UC3855BDWTR Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
146 pcs
On Request
146 pcs On Request 1 On Request On Request 0619+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

UC3855BDWTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Frequency
Mode
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Operating Temperature
Operating Voltage
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UC3855BDWTR Description

Short technical summary and product information.

The UC3855BDWTR from Texas Instruments is a high-performance power factor preregulator designed for boost converters. It utilizes a fixed frequency average current mode control method to minimize line current distortion and achieve near unity power factor.

 

This controller features a built-in active snubber (ZVT) that allows operation up to 500kHz, contributing to improved EMI and efficiency. It also incorporates an inductor current synthesizer for single current transformer sensing, enhancing efficiency and noise margin. The device includes an accurate analog multiplier with line compensation for universal input voltage operation.

 

Key electrical specifications include an operating voltage range of 10.5V to 20V and a precision 1% 7.5V reference. The operating temperature range is 0°C to 70°C. The UC3855BDWTR is available in a 20-SOIC package and is surface mountable.

 

This part is not recommended for new designs. Consider alternate products for new projects.

UC3855BDWTR Quick Information

Product Type: PFC Controller
Canonical Name: UC3855BDWTR Power Factor Correction Controller
Subcategory: Power Factor Correction

UC3855BDWTR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

UC3855BDWTR Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

UC3855BDWTR Features

  • Controls boost PWM to near unity power factor.
  • Fixed frequency average current mode control.
  • Built-in active snubber (ZVT) allows 500kHz operation.
  • Integrated inductor current synthesizer.
  • 20-SOIC package, surface mountable.

UC3855BDWTR Applications

  • High power, high frequency PFC boost converters.
  • Applications requiring stable low distortion AC line current.
  • Designs needing reduced EMI emissions.
  • Systems benefiting from higher efficiency.

UC3855BDWTR FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC3855BDWTR?

The operating voltage range is 10.5V to 20V.

What is the operating temperature range of the UC3855BDWTR?

The operating temperature range is 0°C to 70°C.

What package is the UC3855BDWTR available in?

It is available in a 20-SOIC (0.295", 7.50mm Width) surface-mount package.

What is the switching frequency of the UC3855BDWTR?

The switching frequency is 500kHz.

Does the UC3855BDWTR have a built-in reference voltage?

Yes, it includes a precision 1% 7.5V reference.

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