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TI UCC28512DWR
PFC IC Average Current 200kHz 20-SOIC
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Marcas: Texas Instruments
Parte do fabricante #: UCC28512DWR
Ficha de dados: UCC28512DWR Ficha de dados (PDF)
Pacote/Caso: 20-SOIC
Status RoHS:
Condição de estoque: 5.493 peças, novo original
Tipo de Produto: PFC (Power Factor Correction)
Warranty: 1 Year Ovaga Warranty - Find Out More
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*Todos os preços estão em USD
Quantidade | Preço unitário | Preço Externo |
---|---|---|
1 | $3,195 | $3,195 |
200 | $1,237 | $247,400 |
500 | $1,194 | $597,000 |
1000 | $1,173 | $1173,000 |
Em estoque: 5.493 PCS
UCC28512DWR Descrição geral
The UCC28510 series of combination PFC/PWM controllers provide complete control functionality for any off-line power system requiring compliance with the IEC100032 harmonic reduction requirements. By combining the control and drive signals for the PFC and the PWM stages into a single device, significant performance and cost benefits are gained. By managing the modulation mechanisms of the two stages (leading-edge modulation for PFC and trailing-edge modulation for PWM), the ripple current in the boost capacitor is minimized.
Based on the average current mode control architecture with input voltage feedforward of prior PFC/PWM combination controllers, these devices offer performance advantages. Two new key PWM features are programmable maximum duty cycle and the 2x PWM frequency options to the base PFC frequency. For the PFC stage, the devices feature an improved multiplier and the use of a transconductance amplifier for enhanced transient response.
The core of the PFC section is in a three-input multiplier that generates the reference signal for the line current. The UCC28510 series features a highly linearized multiplier circuit capable of producing a low distortion reference for the line current over the full range of line and load conditions. A low-offset, high-bandwidth current error amplifier ensures that the actual inductor current (sensed through a resistor in the return path) follows the multiplier output command signal. The output voltage error is processed through a transconductance voltage amplifier.
The transient response of the circuit is enhanced by allowing a much faster charge/discharge of the voltage amplifier output capacitance when the output voltage falls outside a certain regulation window. A number of additional features such as UVLO circuit with selectable hysteresis levels, an accurate reference voltage for the voltage amplifier, zero power detect, OVP/enable, peak current limit, power limiting, high-current output gate driver characterize the PFC section.
The PWM section features peak current mode control (with a ramp signal available to add slope compensation), programmable soft-start, accurate maximum duty cycle clamp, peak current limit and high-current output gate driver. The oscillator for the combination controller is available in two versions. In UCC28510, UCC28511, UCC28512, and UCC28513, the PWM and the PFC circuits are switched at the same frequency. In the UCC28514, UCC28515, UCC28516, and UCC28517, the PWM stage frequency is twice that of the PFC frequency. The PWM stage is suppressed until the PFC output has reached 90% of its programmed value during startup. During line dropout and turn off, the device allows the PWM stage to operate until the PFC output has dropped to 47% (UCC28512, UCC28513, UCC28516, and UCC28517) or 71% (UCC28510, UCC28511, UCC28514, and UCC28515) of its nominal value. See available options table on page 1 for a summary of options.
The UCC28510 family also features leading-edge modulation for the PFC stage and trailing-edge modulation for the PWM stage in order to reduce the ripple current in the boost output capacitor. The current amplifier implementation associated with this scheme also results in better noise immunity.
Available in 20-pin N and DW packages.
Características
- Provides Control of PFC and PWM Power Stages In One Device
- Leading-Edge PFC, Trailing-Edge PWM Modulation for Reduced Ripple
- Built-In Sequencing of PFC and PWM Turn-On
- 2-A Source and 3-A Sink Gate Drive for Both PFC and PWM Stages
- Typical 16-ns Rise Time and 7-ns Fall Time into 1-nF Loads
- PFC Features
- Average-Current-Mode Control for Continuous Conduction Mode Operation
- Highly-Linear Multiplier for Near-Unity Power Factor
- Input Voltage Feedforward Implementation
- Improved Load Transient Response
- Accurate Power Limiting
- Zero Power Detect
- PWM Features
- Peak-Current-Mode Control Operation
- 1:1 or 1:2 PFC:PWM Frequency Options
- Programmable maximum duty cycle
- Programmable Soft-Start
- Two Hysteresis Options for Differing Hold-Up Time Requirements
Especificações
Parâmetro | Valor | Parâmetro | Valor |
---|---|---|---|
Manufacturer | Texas Instruments | Product Category | Power Factor Correction - PFC |
RoHS | Details | Switching Frequency | 500 kHz |
Minimum Operating Temperature | - 40 C | Maximum Operating Temperature | + 105 C |
Mounting Style | SMD/SMT | Package / Case | SOIC-20 |
Brand | Texas Instruments | Features | Average Current Mode, Enable, OVP |
Height | 2.35 mm | Length | 12.8 mm |
Product Type | PFC - Power Factor Correction | Series | UCC28512 |
Factory Pack Quantity | 2000 | Subcategory | PMIC - Power Management ICs |
Type | Power Factor Correction IC | Width | 7.52 mm |
Unit Weight | 0.017662 oz |
Envio
Tipo de envio | Taxa de envio | Tempo de espera | |
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 dias |
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FedEx | $20.00-$40.00 (0.50 KG) | 2-5 dias |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 dias |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 dias |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 dias |
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CORREIO AÉREO REGISTADO | $20.00-$40.00 (0.50 KG) | 2-5 dias |
Tempo de processamento: A taxa de envio depende de diferentes zonas e países.
Pagamento
Termos de pagamento | Taxa de mão | |
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Transferência bancária | cobrar taxa bancária de US$ 30,00. |
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PayPal | cobrar taxa de serviço de 4,0%. |
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Cartão de crédito | cobrar taxa de serviço de 3,5%. |
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Western Union | charge US.00 banking fee. |
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Grama de dinheiro | cobrar taxa bancária de US$ 0,00. |
Garantias
1.Os componentes eletrônicos que você compra incluem garantia de 365 dias, garantimos a qualidade do produto.
2. se alguns dos itens que você recebeu não forem de qualidade perfeita, providenciaremos seu reembolso ou substituição com responsabilidade. Mas os itens devem permanecer em sua condição original.
Embalagem
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Todos os produtos serão embalados em saco antiestático. Envio com proteção antiestática ESD.
Fora da etiqueta da embalagem ESD serão utilizadas as informações da nossa empresa: Número da peça, marca e quantidade.
Iremos inspecionar todas as mercadorias antes do envio, garantir que todos os produtos estejam em boas condições e garantir que as peças sejam novas folhas de dados originais.
Depois que todas as mercadorias forem garantidas sem problemas na pós-embalagem, embalaremos com segurança e enviaremos por expresso global. Apresenta excelente resistência a perfurações e rasgos, além de boa integridade de vedação.
Oferecemos produtos de alta qualidade, serviço atencioso e garantia pós-venda
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Temos produtos ricos que podem atender às suas diversas necessidades.
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A quantidade mínima de pedido começa em 1 unidade.
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A menor taxa de envio internacional começa em US$ 0,00
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365 dias de garantia de qualidade para todos os produtos