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PDF AX2530 Data sheet ( Hoja de datos )
| Número de pieza | AX2530 | |
| Descripción | High Precision CC/CV Primary-Side PWM Power Switch | |
| Fabricantes | AXElite | |
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Hay una vista previa y un enlace de descarga de AX2530 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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AX2530
High Precision CC/CV Primary-Side PWM
Power Switch
GENERAL DESCRIPTION
AX2530 is a high performance offline PWM Power switch for low power AC/DC
charger and adapter applications. It operates in primary-side sensing and regulation.
Consequently, opto-coupler and TL431 could be eliminated. Proprietary Constant Voltage
(CV) and Constant Current (CC) control is integrated as shown in the figure below.
In CC control, the current and output power setting can be adjusted externally by the
sense resistor Rs at CS pin. In CV control, multi-mode operations are utilized to achieve
high performance and high efficiency. In addition, good load regulation is achieved by the
built-in cable drop compensation. Device operates in PFM in CC mode as well at large
load condition and it operates in PWM with frequency reduction at light/medium load.
AX2530 offers power on soft start control and protection coverage with
auto-recovery features including Cycle-by- Cycle current limiting, VDD OVP, VDD clamp
and UVLO. Excellent EMI performance is achieved with Power-Source proprietary
frequency shuffling technique.
High precision constant voltage (CV) and constant current (CC) can be achieved by
AX2530.
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APPLICATION CIRCUIT
AX2530
FUNCTION DESCRIPTIONS
AX2530 is a cost effective PWM power switch optimized for off-line low power
AC/DC applications including battery chargers and adapters. It operates in primary side
sensing and regulation, thus opto-coupler and TL431 are not required. Proprietary built-in
CV and CC control can achieve high precision CC/CV control meeting most adapter and
charger application requirements.
Startup Current and Start up Control
Startup current of AX2530 is designed to be very low so that VDD could be charged
up above UVLO threshold and starts up quickly. A large value startup resistor can
therefore be used to minimize the power loss in application.
Operating Current
The Operating current of AX2530 is as low as 2.0mA. Good efficiency is achieved
with the low operating current together with ‘Muti-mode’ control features.
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Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Mar.26, 2012
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AX2530.PDF ] | |
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