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TS2509CSRL Fiches technique(PDF) 4 Page - Taiwan Semiconductor Company, Ltd |
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TS2509CSRL Fiches technique(HTML) 4 Page - Taiwan Semiconductor Company, Ltd |
4 / 9 page TS2509 3A / 500KHz PWM Buck Converter 4/9 Version: B09 Function Descriptions PWM Control The TS2509 is a pulse-width modulation (PWM) system with a range from 0 to 100% according to different load current. The ripple voltage produced by the switching can easily be removed through a filter because the switching frequency remains constant. Setting the Output Voltage TS2509 is adjustable output version. With different output voltage setting, following tables are for external resistor value setting as reference: (EL CAP) Resistor select for output voltage setting (MLCC) Resistor select for output voltage setting VOUT R2 R1 VOUT R2 R1 5V 1.3K 6.8K 5V 7.5K 39K 3.3V 1.5K 4.7K 3.3V 15K 47K 2.5V 2.2K 4.7K 2.5V 22K 47K 1.8V 2K 2.5K 1.8V 27K 33K 1.5V 2.2K 2K 1.5V 30K 27K 1.2V 3K 1.5K 1.2V 30K 15K 1V 10K 2.5K 1V 56K 13K Inductor Selection For most designs are operates with inductors of 10µH to 22µH. The inductor value can be derived from the following table: L1 Recommend Value (VIN=12V, IOUT=3A) VOUT 1.8V 2.5V 3.3V 5V L1 Value 10~15uH 10~15uH 15~22uH 15~22uH Large value inductors can lower ripple current and small value inductors will gets higher ripple currents. Choose inductor ripple current approximately 15% of the maximum load current 3A. Input Capacitor Selection (EL CAP) This capacitor should be located close to the IC using short leads and the voltage rating should be approximately 1.5 times the maximum input voltage. The RMS current rating should be approximately 1⁄2 the DC load current. A low ESR input capacitor sized for maximum RMS current must be used. A 220µF low ESR capacitor for most sufficient for applications (MLCC) A 22µF MLCC or two 10uF MLCC capacitors for most sufficient for applications |
Numéro de pièce similaire - TS2509CSRL |
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Description similaire - TS2509CSRL |
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