Mfr Part #:

UC2855BDWTR

The Texas Instruments UC2855BDWTR is an average current mode PFC controller designed for high power, high frequency boost converters. It operates up to 500kHz and comes in a 20-SOIC package.

✓ Total Stock: 2,000 pcs

$ Price Range: $11.05

UC2855BDWTR Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Components Technology Group, Inc. ✓ Non-Authorised Inventory information	2,000 pcs On Request	2000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

UC2855BDWTR Description

Short technical summary and product information.

The UC2855BDWTR from Texas Instruments is a high-performance power factor preregulator IC. It provides control features for high power, high frequency PFC boost converters, utilizing an average current mode control method for stable, low distortion AC line current programming.

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

Protection features include overvoltage and overcurrent protection. The UC2855BDWTR operates within a -40°C to 85°C temperature range and is available in a 20-pin SOIC package suitable for surface mounting.

This controller is designed for applications requiring efficient power factor correction, such as in power supplies for various electronic equipment.

UC2855BDWTR Quick Information

Product Type: PFC Controller

Canonical Name: UC2855B Average Current Mode PFC Controller

Subcategory: Power Factor Correction

UC2855BDWTR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

UC2855BDWTR Estimated Pricing

Qty	Low	High
1+	$11.05	$11.05

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

UC2855BDWTR Features

Controls boost PWM to near unity power factor.
Fixed frequency average current mode control.
Built-in active snubber (ZVT) for high efficiency.
Operates up to 500kHz switching frequency.
20-SOIC package for surface mounting.

UC2855BDWTR Applications

Power factor correction in AC-DC power supplies.
High-efficiency switch-mode power converters.
Universal input voltage power systems.
Industrial and telecom power supplies.

UC2855BDWTR FAQs

5 frequently asked questions generated from this part’s specifications.

What is the operating voltage range for the UC2855BDWTR?

The operating voltage range for the UC2855BDWTR is 10.5V to 20V.

What is the operating temperature range of the UC2855BDWTR?

The UC2855BDWTR operates within a temperature range of -40°C to 85°C.

What package type is the UC2855BDWTR available in?

The UC2855BDWTR is available in a 20-SOIC package.

What is the switching frequency of the UC2855BDWTR?

The UC2855BDWTR can operate at switching frequencies up to 500kHz.

What type of control mode does the UC2855BDWTR use?

The UC2855BDWTR uses Fixed Frequency Average Current Mode Control.

Category	PFC (Power Factor Correction)
Manufacturer Name	Texas Instruments
Bandwidth	5 MHz
Current	150 µA
Frequency	500 kHz
Mode	Average Current
Mounting Type	Surface Mount
Operating Temperature	[{'limit_type': 'minimum', 'value': -40, 'unit': '°C', 'display_value': '-40°C'}, {'limit_type': 'maximum', 'value': 85, 'unit': '°C', 'display_value': '85°C'}]
Protection Features	Overvoltage and Overcurrent protection
Supplier Device Package	20-SOIC
Supplier Package	20-SOIC
Voltage	[{'limit_type': 'minimum', 'value': 10.5, 'unit': 'V', 'display_value': '10.5 V'}, {'limit_type': 'maximum', 'value': 20, 'unit': 'V', 'display_value': '20 V'}]