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PDF RS2112 Data sheet ( Hoja de datos )
| Número de pieza | RS2112 | |
| Descripción | High Precision CC/CV Primary-Side PWM Power Switch | |
| Fabricantes | PTC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RS2112 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
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DESCRIPTION
RS2112 is a high performance offline PSR controller
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, PFM operations are utilized to
achieve high performance and high efficiency. In
addition, good load regulation is achieved by the built-in
cable drop compensation. The chip consumes very low
operation current (typical 350μA), it can achieve less
than 30mW standby power to meet strict standby
power standard.
RS2112 offers comprehensive protection coverage
with auto-recovery features including Cycle-by-Cycle
current limiting, VDD over voltage protection, feedback
loop open protection, short circuit protection, built‐ in
leading edge blanking, VDD under voltage lockout
(UVLO), etc.
RS2112
High Precision CC/CV Primary-Side
PWM Power Switch
FEATURES
±5% constant voltage regulation at universal
AC input
High precision constant current regulation at
universal AC input
Primary-side sensing and regulation without
TL431 and opto-coupler
Programmable CV and CC regulation
Built-in primary winding inductance compensation
Programmable cable drop compensation
Built-in 700V power BJT
Ultra low start-up current (Typ. 1μA)
VDD over voltage protection
Built-in feedback loop open protection
Built-in short circuit protection
Built-in leading edge blanking (LEB)
Cycle-by-cycle current limiting
VDD under voltage lockout with hysteresis
(UVLO)
SOP-8 green packaging
APPLICATIONS
Low power AC/DC offline SMPS
<5W LED Lighting for bulbs and spot light
TYPICAL CC/CV CURVE
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet RS2112.PDF ] | |
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