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FSCQ1565RP Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FSCQ1565RP Datasheet(HTML) 1 Page - Fairchild Semiconductor |
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1 / 24 page  ©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev.1.0.0 Features • Optimized for Quasi-Resonant Converter (QRC) • Advanced Burst-Mode operation for under 1 W standby power consumption • Pulse by Pulse Current Limit (11.5A) • Over load protection (OLP) - Auto restart • Over voltage protection (OVP) - Auto restart • Abnormal Over Current Protection (AOCP) - Latch • Internal Thermal Shutdown (TSD) - Latch • Under Voltage Lock Out (UVLO) with hysteresis • Low Startup Current (typical : 25uA) • Low Operating Current (typical : 7mA) • Internal High Voltage SenseFET • Built-in Soft Start (20ms) • Extended Quasi-resonant Switching for Wide Load Range Application •CTV • DVD Receiver • Audio Power Supply Description In general, Quasi-Resonant Converter (QRC) shows lower EMI and higher power conversion efficiency compared to the conventional hard switched converter with a fixed switching frequency. Therefore, it is well suited for applications that are sensitive to the noise, such as color TV and audio. The FSCQ1565RP is an integrated Pulse Width Modulation (PWM) controller and Sense FET specifically designed for Quasi-resonant off-line Switch Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes integrated fixed frequency oscillator, under voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft start, temperature compensated precise current sources for a loop compensation and self protection circuitry. Compared with discrete MOSFET and PWM controller solution, it can reduce total cost, component count, size and weight simultaneously increasing efficiency, produc- tivity, and system reliability. This device is a basic platform well suited for cost effective designs of Quasi resonant switching flyback converters. Table 1. Notes: 1. Maximum practical continuous power in an open frame design at 50 °C ambient. 2. 230 VAC or 100/115 VAC with doubler. Typical Circuit Figure 1. Typical Flyback Application OUTPUT POWER TABLE PRODUCT 230VAC ±15%(2) 85-265VAC Open Frame(1) Open Frame(1) FSCQ0765RT 100 W 85 W FSCQ1265RT 170 W 140 W FSCQ1565RT 210 W 170 W FSCQ1565RP 250 W 210 W Vcc GND Drain Sync Vo PWM V FB AC IN FSCQ1565RP FSCQ1565RP Green Mode Fairchild Power Switch (FPSTM) for Quasi-Resonant Switching Converter |
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