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As peças usadas certificadas pela Utsource fornecem as seguintes garantias:
1. A Utsource inspecionará as mercadorias, incluindo a inspeção da aparência (sem danos graves à aparência), selecionará fornecedores qualificados e honestos e garantirá uma taxa de qualificação de 98%.
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Descrição do produto
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.
Título
Enhanced bipolar phase shifted full bridge controller with selectable UVLO, -40°C to 85°C
Todos os nomes de produtos, marcas registradas, marcas e logotipos usados neste site são de propriedade de seus respectivos proprietários. A representação, descrição ou venda de produtos com esses nomes, marcas registradas, marcas e logotipos é apenas para fins de identificação e não se destina a indicar qualquer afiliação ou autorização de qualquer detentor de direitos.
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10-MHz Error Amplifier Pin Programmable Undervoltage Lockout Low Startup Current 150 µA Soft Start Control Outputs Active Low During UVLO
DESCRIPTIONThe 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.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
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.
PARAMETER Supply voltage (VC, VIN) Output current, source or sink, dc Output current, source, sink peak for µs at max frequency of 300 kHz Analog inputs
(1) Pin references are to 20-pin DIL and SOIC packages. All voltages are with respect to ground unless otherwise stated. Currents are positive into, negative out of the specified terminal.
over operating free-air temperature range (unless otherwise noted)(1) JC data values stated were derived from MIL-STD-1835B. MIL-STD-1835B states "The baseline values shown are worst case (mean +2s) for x 60 mil microcircuit device silicon die and aplicable for devices with die sizes to 14400 square mils. For devices die sizes greater than 14400 square mils use the following values; dual-in-line, 11°C/W; flat pacl 10°C/W; pin grid array, 10°C/W".
(2) Specified JA (junction-to-ambient) is for devices mounted FR4 PC board with one ounce copper wire where noted. When resistance range is given, lower values are for 5-in2 aluminum PC board. Test PWB was 0.062 in thick and typically used 0.635-mm
trace widths for power packages and 1.3-mm trace widths for non-power packages with x 100 mil probe land area at the end of
each trace. (3) JC estimated for backside of device, through the metalized thermal conduction pads.Algum número de peça do mesmo fabricante
mesma categoria
466 comentários de compradores de Brazil
max
Length of registration:3 years
Everything is super, I take them for smooth ignition
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11/23/2022
Joao Carlos Cecato
Length of registration:13 years
Arrived well packed and quickly. Got technical feedback test, product as described, the quality and the working condition is good, thank you seller.
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10/27/2022
gabriel
Length of registration:12 years
About Utsource, if you want guaranteed good parts. They have a huge selection and they both accept small orders. Data sheets are online for everything they’ve got. If you open an account (free) you can check your order status and order history and re-order off past orders. The cheapest shipping option for both of them isPostal Service.
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10/11/2022
eduardo pagliuca
Length of registration:11 years
tudo certo otimo vendedor
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12/23/2016
LUIZ ANTONIO PAVAO
Length of registration:12 years
ok. Conforme o anunciado.
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12/21/2016
Francisco Manuel de ávila Goulart Junior
Length of registration:7 years
Received ok
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12/08/2016
Solucao Eletronica Industrial
Length of registration:8 years
VERY GOOD
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11/09/2016
Marconi A Rocha
Length of registration:1 years
Everything allright Thks.
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10/21/2016
Fernando Torres
Length of registration:8 years
bom
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10/18/2016
Luiz Henrique Amancio de Oliveira
Length of registration:13 years
All right. Fast shipping!
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09/14/2016
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UC2879DWTR
UC2879DWTR tem várias marcas em todo o mundo que podem ter nomes alternativos para UC2879DWTR devido a diferenças ou aquisições regionais. UC2879DWTR também pode ser conhecido como os seguintes nomes:
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