Product category:
Power Supply ICs and Controllers
News Release from: ON Semiconductor | Subject: NCP1605, NCP1606, NCP1654, NCP1655 PFC controllers
Edited by the Electronicstalk Editorial
Team on 08 March 2007
PFC controllers for efficient power
management
Four new devices in a family of power-factor correction (PFC) controllers are designed for use in lighting, adapters, ATX supplies, flat-panel TVs and other power applications.
ON Semiconductor has brought out four new devices in its family of power-factor correction (PFC) controllers Designed for use in lighting, adapters, ATX supplies, flat-panel TVs and other power applications, the new devices enable the development of highly efficient power supplies that meet emerging global energy-efficiency and power-factor standards
This article was originally published on Electronicstalk on 31 Mar 2003 at 8.00am (UK)
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"The introduction of these devices extends ON Semiconductor's leadership position in power factor controllers", says Andy Williams, Senior Vice President and General Manager of the Automotive and Power Regulation Group.
"The four new devices complement our existing PFC product portfolio by providing industry-standard replacements with improved features, new and innovative control methods, and added functions that ease both the time and effort required to design highly efficient switch-mode power supplies".
"To address our customers' ongoing demand for ever more efficient power management, we will continue to develop PFC solutions targeted to meet their design challenges".
Further reading
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The NCP1605 is an enhanced, high voltage and efficient standby-mode power-factor controller that can work in fixed-frequency discontinuous conduction mode (DCM) or/and in critical conduction mode (CRM).
The device has all the features necessary for building robust PFC stages.
The NCP1605 can operate as a PFC master, ensuring that a power supply's second stage only starts up under safe conditions.
In addition, it integrates the skip-cycle capability to minimise stand-by losses.
Offered in a lead-free SOIC-16 package, the NCP1605 is priced at US $1.07 per unit in 1,000 unit quantities.
The NCP1606 series are CRM power-factor controllers specifically designed for use as preconvertors in electronic ballast, AC adapters, flat TVs and other low to mid-power off-line convertors, typical up to 300W.
These devices incorporate adjustable over-voltage protection, and built-in under-voltage protection.
The NCP1606A and NCP1606B provide a pin-to-pin compatible replacement for industry standard devices.
The NCP1606B further reduces power losses by proposing a lower over-voltage protection current and a lower current sense threshold.
The devices are offered in a lead-free SOIC-8 package, priced at $0.335 per unit in 2,500 unit quantities.
They are also available in a lead-free PDIP-8 package, budgetary priced at $0.405 per unit in 1,000 unit quantities.
The NCP1654 and NCP1655 are continuous conduction-mode power-factor correction controllers.
They control the power switch conduction time in a fixed-frequency mode and in dependence on the instantaneous coil current.
They also integrate high safety protection features like a brown-out function, an effective input power runaway clamping circuitry, and minimise the number of external components required for circuit implementation.
The NCP1654 is pin-to-pin compatible with industry standard devices, and the NCP1655 offers a pin-to-pin upgrade to ON Semiconductor's popular NCP1653 fixed-frequency current-mode PFC controller.
The new devices are offered in a lead-free SOIC-8 package, priced at $0.80 USD per unit in 2,500 unit quantities.
They are also available in a lead-free PDIP-8 package, priced at $0.88 USD per unit in 1,000 unit quantities.
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