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UC3879DWTR ACTIVE

Enhanced bipolar phase shifted full bridge controller with selectable UVLO, 0°C to 70°C

custom-reels CUSTOM Custom reel may be available

Pricing


Qty Price (USD)
1-99 7.163
100-249 5.84
250-999 4.59
1,000+ 3.893

Quality information

RoHS Yes
REACH Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information info-circle

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Export classification

  • US ECCN: EAR99

Packaging information

Package | Pins SOIC (DW) | 20
Package qty | Carrier: 2,000 | LARGE T&R
Operating temperature range (°C) 0 to 70
View TI packaging information

Features for the UC3879

  • Programmable Output Turn On Delay; Zero Delay Available
  • Compatible with Voltage Mode orCurrent Mode Topologies
  • Practical Operation at Switching Frequencies to 300 kHz
  • 10-MHz Error Amplifier
  • Pin Programmable Undervoltage Lockout
  • Low Startup Current — 150 µA
  • Soft Start Control
  • Outputs Active Low During UVLO

Description for the UC3879

The UC3879 controls a bridge power stage by phase shifting the switching of one half-bridge with respect to the other. This allows constant frequency pulse width modulation in combination with resonant, zero-voltage switching for high efficiency performance. The UC3879 can be configured to provide control in either voltage mode or current mode operation, with overcurrent shutdown for fast fault protection.

Independently programmable time delays provide dead-time at the turn-on of each output stage, allowing time for each resonant switching interval.

With the oscillator capable of operating in excess of 600 kHz, overall output switching frequencies to 300 kHz are practical. In addition to the standard free running mode, with the CLKSYNC pin, the user may configure the UC3879 to accept an external clock synchronization signal. Alternatively, up to three units can be locked together with the operational frequency determined by the fastest device.

Protective features include an undervoltage lockout and overcurrent protection. Additional features include a 10-MHz error amplifier, a 5-V precision reference, and soft start. The UC3879 is available in 20 pin N, J, DW, and Q and 28 pin L packages.

Pricing


Qty Price (USD)
1-99 7.163
100-249 5.84
250-999 4.59
1,000+ 3.893

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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