Low

UC2854N - 

Controlador PFC, Alimentación 15V a 35V y 10mA, Bloqueo 15V, Ciclo de Servicio 95%, 102kHz, DIP-16

TEXAS INSTRUMENTS UC2854N

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Referencia del fabricante:
UC2854N
Código Farnell:
1470469
Hoja de datos técnicos:
(EN)
Vea todos los documentos técnicos

Información del producto

:
10mA
:
-40°C
:
95%
:
102kHz
:
85°C
:
1.5mA
:
15V
:
Individual
:
DIP
:
35V
:
16Pines
:
-
:
16V
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Resumen del producto

The UC2854N is a High Power Factor Preregulator provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. To do this, it contains a voltage amplifier, an analog multiplier/divider, a current amplifier and a fixed-frequency PWM. In addition, it contains a power MOSFET compatible gate driver, 7.5V reference, line anticipator, load-enable comparator, low-supply detector and over-current comparator. It uses average current-mode control to accomplish fixed-frequency current control with stability and low distortion. Unlike peak current-mode, average current control accurately maintains sinusoidal line current without slope compensation and with minimal response to noise transients.
  • Control boost PWM to 0.99 Power factor
  • Limit line current distortion to <5%
  • World-wide operation without switches
  • Feed-forward line regulation
  • Average current-mode control
  • Low noise sensitivity
  • Low start-up supply current
  • Fixed-frequency PWM drive
  • Low-offset analog multiplier/divider
  • 1A Totem-pole gate driver
  • Precision voltage reference
  • Green product and no Sb/Br

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