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UC2879DWTR

Resonant Controllers 100mA 300kHz 20-Pin SOIC T/R

Manufacturer: Texas Instruments, Inc
Mfr.Part #: UC2879DWTR
Datasheet: UC2879DWTR Datasheet (PDF)
Package/Case: SOP20
Product Type: Power Management ICs
RoHS:
Lifecycle: Active

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UC2879DWTR General Description

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.

Key Features

Programmable Output Turn On Delay; Zero Delay Available
Compatible with Voltage Mode or Current 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

Specifications

Topology	Phase-shifted full bridge	Control mode	Current, Feedforward, Voltage
Duty cycle (max) (%)	100	Switching frequency (max) (kHz)	300
Features	Adjustable switching frequency, Current limiting, Error amplifier, Soft start, Soft switching, Synchronization pin	UVLO thresholds on/off (V)	10.75/9
Operating temperature range (°C)	-40 to 85	Rating	Catalog, Military
Gate drive (typ) (A)	0.1	Vin (max) (V)	20
feature-type	Resonant Controllers	feature-control-method	Voltage
feature-topology	Full-Bridge	feature-number-of-pwm-outputs	4
feature-switching-frequency-khz	300	feature-maximum-duty-cycle-	100
feature-process-technology		feature-output-voltage-v
feature-minimum-operating-supply-voltage-v	10.75	feature-maximum-operating-supply-voltage-v	20
feature-maximum-supply-current-ma	35	feature-maximum-power-dissipation-mw
feature-synchronous-pin	No	feature-packaging	Tape and Reel
feature-rad-hard		feature-pin-count	20
feature-supplier-package	SOIC	feature-standard-package-name	SO
feature-cecc-qualified	No	feature-esd-protection
feature-escc-qualified		feature-military	No
feature-aec-qualified	No	feature-aec-qualified-number
feature-eccn-code	EAR99	feature-svhc	No
feature-svhc-exceeds-threshold	No

Shipping

Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

DHL
Fedex
UPS
EMS
Registered Air Mail

Payment

We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

Wire Transfer
Paypal
Credit Card
Western Union
Money Gram

Guarantees

Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.

Packing

AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.

ESD
Tape and Reel
Cut Tape
Tube or Tray

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Buying Guide

What is the lifespan of UC2879DWTR?
The lifespan of UC2879DWTR depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.
Where can I find the full specification of UC2879DWTR?
You can find it with PDF Datasheet for UC2879DWTR on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.
How to check the quality of UC2879DWTR?
Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.
Can I purchase samples for testing?
Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.
Where can I check the delivery after the order is completed?
Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.
Where to view my order of UC2879DWTR or my history order record?
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