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Semtech - New 1MHz dual-ended PWM controller provides design flexibilityPublished Mar 31 2006 [Printer friendly version] [Email article to a friend] [More like this] A new dual-ended, pulse-width modulation (PWM) controller that features low power consumption and high speed, making it ideal for designing compact high-power isolated off-line and telecom power supplies, has been introduced by Semtech.

"The SC4806 is the ultimate versatile PWM controller," said Ven Shan, vice president of marketing for Semtech's power management products.

"The feature set is augmented by a small package size, high operating frequency and high integration that can deliver high power density to isolated DC to DC converter designs for the networking, telecom and server markets." The SC4806 has very low 90uA start-up current and can be configured in either current mode or voltage mode.

The controller can operate in peak current mode or in voltage mode by programming the slope compensation using a single external resistor.

Operating in voltage mode feed forward allows fast line transient response and eliminates the need for current sensing elements.

The current mode control simplifies the loop dynamics and reduces transformer saturation problems in full-bridge and push-pull topologies.

The SC4806 contains all of the control circuitry required for isolated applications where a secondary side error amplifier is used.

Operating fro...

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Please email your comments to DailyNews@gov.bw Return to main news index Next: Bill on MPs salaries goes through Batswana consumer driven 31 March, 2006 GABORONE - Batswana live beyond their means and end up in a debt trap circle with little or no accumulated wealth, says Bank of Botswana governor Linah Mohohlo.

Speaking at the launch of three financial literacy booklets by Stanbic Bank Botswana in Gaborone.

The booklets are aimed at improving the level of financial literacy and education in Botswana Wednesday; Mohohlo said Batswana are consumer driven with an obsession for expensive vehicles and clothes.

For years that I have been in the banking profession, I have bee...