UC2879DW The Texas Instruments UC2879DW is a phase shift resonant controller designed for AC/DC switching applications. It operates with a supply voltage range of 9.25V to 20V and a switching frequency up to 300kHz.
Mfr Part #:

UC2879DW

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC2879DW is a phase shift resonant controller designed for AC/DC switching applications. It operates with a supply voltage range of 9.25V to 20V and a switching frequency up to 300kHz.
✓ Total Stock: 11,300 pcs
$ Price Range: $6.99

UC2879DW Available from 1 distributor

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UC2879DW Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Duty Cycle
Fault Protection
Frequency
Mounting Type
Operating Temperature
Output Isolation
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UC2879DW Description

Short technical summary and product information.

The UC2879DW from Texas Instruments is an AC/DC switching regulator that utilizes a phase shift resonant controller. This device is designed to manage a bridge power stage by phase shifting the switching of one half-bridge relative to the other, enabling constant frequency pulse width modulation combined with resonant, zero-voltage switching for high efficiency.

 

Key electrical specifications include a wide operating voltage range from 9.25V to 20V and a practical operation at switching frequencies up to 300kHz. It also features a 10-MHz error amplifier, programmable undervoltage lockout, and a low startup current of 150 μA. The controller supports both voltage mode and current mode operation, with overcurrent shutdown for fault protection.

 

Packaged in a 20-SOIC (0.295", 7.50mm Width) surface mount package, the UC2879DW is suitable for applications requiring efficient power conversion. Its operating temperature range is -40°C to 85°C (TA). The device offers control features such as frequency control, soft start, and synchronization.

 

Note: This part is not recommended for new designs.

UC2879DW Quick Information

Product Type: AC/DC Switching Regulator
Canonical Name: Phase Shift Resonant Controller
Subcategory: Offline Switches

UC2879DW Compliance

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

UC2879DW Estimated Pricing

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1+ $6.99 $6.99

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

UC2879DW Features

  • Phase shift resonant controller for high efficiency.
  • Operates at switching frequencies up to 300 kHz.
  • Wide supply voltage range of 9.25V to 20V.
  • Supports voltage or current mode operation.
  • Surface mount 20-SOIC package.

UC2879DW Applications

  • Enables zero-voltage switching for efficiency.
  • Suitable for full-bridge power stages.
  • Provides constant frequency pulse width modulation.
  • Offers overcurrent fault protection.

UC2879DW FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC2879DW?

The UC2879DW operates from a minimum supply voltage of 9.25 V to a maximum of 20 V.

What is the maximum switching frequency of the UC2879DW?

The maximum switching frequency is 300 kHz.

What is the operating temperature range of the UC2879DW?

The operating temperature range is -40°C to 85°C.

What package does the UC2879DW come in?

The UC2879DW is housed in a 20-SOIC surface-mount package with a 7.50 mm body width.

What topology does the UC2879DW use?

The UC2879DW uses a full-bridge topology with non-isolated output.

What fault protection does the UC2879DW include?

The UC2879DW includes current limiting fault protection.

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