Diodes AP3105NA/NV/NL/NR Manuel d'utilisateur télécharger pdf

AP3105NA/NV/NL/NR

Document number: DS36542 Rev. 1 - 2

1 of 13

www.diodes.com

September 2013

AP3105NA/NV/NL/NR

Product Line o

Diodes Incorporated

COST EFFECTIVE GREEN PWM CONTROLLER

Description

The AP3105NA/NV/NL/NR is a low startup current, current mode

PWM controller with green-mode power-saving operation. The PWM

switching frequency at normal operation is set with 65kHz typically

and the dithering of frequency will also improve the EMI feature.

When the load decreases, the frequency will reduce and when at a

very low load, the IC will enter the ‘burst mode’ to minimize switching

loss.

About 20kHz frequency switching is to avoid the audible noise as well

as reducing the standby loss. The skip mode point can be adjusted

through the external resistor connected to the current sense resistor.

The AP3105NA/NV/NL/NR features a lot of functions such as the

Leading-Edge Blanking (LEB) of the current sensing, internal slope

compensation and several protection functions including cycle-by-

cycle current limit (OCP), VCC Over Voltage Protection (VOVP), OTP

and OLP protection. The versatile latch function can be set by the

customer through few components.

This IC is available in SOT-23-6 package.

Features

 Very Low Start-up Current

 Current Mode Control

 Non-audible-noise Green-mode Control

 Skip Mode Adjustable

 Internal Slope Compensation

 Soft Start During Startup Process

 Frequency Fold Back for High Average Efficiency

 Secondary Short Winding Protection with FOCP

 Soft Switching for Reducing EMI

 VCC Maintain Mode

 Latch Function for OTP/OVP

 Useful Pin Fault Protection:

SENSE Pin Floating

CTRL Pin Short to Ground

FB/Opto-coupler Open/Short

 Comprehensive System Protection Feature:

VCC Over Voltage Protection (VOVP)

Over Load Protection (OLP)

 Mini Size with Packages

 Pin to Pin Compatible with AP3103

Pin Assignments

K Package

(SOT-23-6)

Applications



Switching AC-DC Adapter/Charger

 ATX/BTX Auxiliary Power

 Set-top Box(STB) Power Supply

 Open Frame Switching Power Supply

Pin 1 Mark

GND

CTRL

GATE

VCC

SENSE

1 2 3 4 5 6 ... 12 13

Résumé du contenu

Page 1 - Pin 1 Mark

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Page 7 - Ambient Temperature (

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Page 8 - Operation Description

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Page 9 - Diodes Incorporated

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