전자부품 데이터시트 검색엔진 |
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L6591 데이터시트(PDF) 1 Page - STMicroelectronics |
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L6591 데이터시트(HTML) 1 Page - STMicroelectronics |
1 / 32 page June 2008 Rev 1 1/32 32 L6591 PWM controller for ZVS half-bridge Features ■ Complementary PWM control for soft-switched half-bridge with programmable dead-time ■ Up to 500 kHz operating frequency ■ On-board high-voltage start-up ■ Advanced light load management ■ Adaptive UVLO ■ Pulse-by-pulse OCP ■ OLP (latched or autorestart) ■ Transformer saturation detection ■ Interface with PFC controller ■ Latched disable input ■ Input for power-on sequencing or brownout protection ■ Programmable soft-start ■ 4 % precision external reference ■ 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity ■ SO16N package Applications ■ High power AC-DC adapter/charger ■ Desktop PC, entry-level server ■ Telecom SMPS SO-16 SO16 narrow Figure 1. Typical application circuit 5 Vre f + - 1.5V 3 BLANKI NG R S Q 25 V Vc c_O K DIS R 3R DIS 7 4 11 6 9 CLK COMP SS ISEN OSC VCC VREF GND HICCUP VREG VREG 0.3 2mA TIMING PWM + - 16 HV LV G HV ge nerator ON/O FFa nd a daptive UV LOmanagement Vcc_OK 8 PFC_STOP 2.0 V - + OCP2 DI S OCP2 + - SOFT-START BURST- M ODE CTRL S Q R S Q R VCC 14 HVG 10 1 3 FGND LEVEL SHIFTER 15 BOOT Sync hronous bootstra p diode 1.7 5V - + 2 DIS 4.5V OCP - + - + 1 LINE 1.5V 15µA LINE_ OK LINE_OK S HUT DO WN PWM _CT L Ilimre f 0.8 V max. Low UVLO Low UV LO www.st.com |
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