XL7026

Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Features General Description „ „ „ „ „ „ „ „ „ „ „ „ „ „ The XL7026 is a 150KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 0.6A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator. Operation Voltage from 12V to 90V Maximum Duty Cycle up to 100% Minimum Drop Out 0.5V Adjust VOUT from 1.25V to 20V Max. IOUT=0.6A at VOUT=5V Max. IOUT=0.3A at VOUT=12V or 15V Max. output power less than 5W Fixed 150KHz Switching Frequency Internal Optimize HV Power MOSFET High efficiency up to 85% Excellent line and load regulation Built in output short Protection Function Built in current limit function SOP8-EP (Exposed PAD) package The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. Applications „ „ Ebike Controller Power Supply Telecom / Networking Equipment Figure1. Package Type of XL7026 Rev 1.0 www.xlsemi.com 1 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Pin Configurations The Exposed PAD is SW Figure2. Pin Configuration of XL7026 (Top View) Table 1 Pin Description Pin Number Pin Name 1 FB 2 VREG 3 VC 4 VIN 5,6 SW 7 OGND 8 GND Description Feedback Pin (FB). Through an external resistor divider network, Feedback senses the output voltage and regulates it. The feedback threshold voltage is 1.25V. Supply Voltage Input Pin. A 10 µF ceramic decoupling capacitor is required. An external voltage between 7V and 9V can be applied to this pin to reduce internal power dissipation. Internal Voltage Regulator Bypass Capacity. In typical system application, The VC pin connect a 1uF capacitor to VIN. Supply Voltage Input Pin. XL7026 operates from 12V to 90V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. Power Switch Output Pin (SW). Output is the switch node that supplies power to the output. The exposed PAD is SW. Output Ground Pin. Ground Pin. Care must be taken in layout. This pin should be placed outside of the Schottky Diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL7026. Rev 1.0 www.xlsemi.com 2 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Function Block Figure3. Function Block Diagram of XL7026 Typical Application Circuit R3 for limit maximum output current, R3 choose 0.15ohm in VOUT≤5V application; R3 choose 0.28ohm in VOUT>5V application. Figure4. XL7026 Typical Application Circuit Rev 1.0 www.xlsemi.com 3 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Ordering Information Order Information XL7026E1 Marking ID XL7026E1 Package Type SOP8-EP Packing Type Supplied As 2500 Units on Tape & Reel XLSEMI Pb-free products, as designated with “E1” suffix in the par number, are RoHS compliant. Absolute Maximum Ratings（Note1） Parameter Symbol Vin VFB VSW PD Value -0.3 to 100 -0.3 to Vin -0.3 to Vin Internally limited Unit V V V mW VIN Pin Voltage FB Pin Voltage SW Pin Voltage Power Dissipation Thermal Resistance (SOP8-EP) (Junction to Ambient, No Heatsink, Free Air) Maximum Junction Temperature Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) ESD (HBM) RJA 60 ºC/W TJ TJ TSTG TLEAD -40 to 150 -40 to 125 -65 to 150 260 >3000 ºC ºC ºC ºC V Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Rev 1.0 www.xlsemi.com 4 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 XL7026 Electrical Characteristics Ta = 25℃;unless otherwise specified. Symbol Parameter Test Condition Min. Typ. Max. Unit 1.225 1.25 1.275 V - 93 - % - 88 - % - 85 - % - 80 - % System parameters test circuit figure4 VFB FB Voltage ŋ Efficiency ŋ Efficiency ŋ Efficiency ŋ Efficiency Vin =20V to 90V，Vout=15V Iload=0.1A to 0.3A Vin=24V ,Vout=15V Iout=0.3A Vin=36V ,Vout=15V Iout=0.3A Vin=48V ,Vout=15V Iout=0.3A Vin=60V ,Vout=15V Iout=0.3A Electrical Characteristics (DC Parameters) Vin = 48V, GND=0V, Vin & GND parallel connect a 33uf/100V capacitor; Iout=0.2A, Ta = 25℃; the others floating unless otherwise specified. Parameters Input operation voltage VIN UVLO VREG voltage Quiescent Supply Current Symbol Test Condition Vin Min. Typ. 12 Vin_uvlo 10 Vreg 8 Iq VFB =2V 120 Unit 90 V 11 V V 2.5 5 mA 150 180 KHz Oscillator Frequency Fosc Switch Current Limit IL VFB=0, R3=0.15Ω 0.667 Output Power PMOS Rdson Vin=48V, ISW=0.3A 180 Max. Duty Cycle DMAX VFB=0V 100 Rev 1.0 Max. A 210 mohm % www.xlsemi.com 5 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Typical Performance Characteristics Quiescent Supply Current VS Temperature Quiescent Supply Current(mA) 5 VIN=48V 4 3 2 1 0 -50 -25 0 25 50 75 100 125 Temperature(℃) Figure5. Quiescent Current Curve Feedback Voltage Change VS Temperature 3.0 Feedback Voltage Change(%) 2.5 2.0 VIN=48V,VOUT=5V,IOUT=0.1A Normalized at TA=25℃ 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -50 -25 0 25 50 75 100 125 Temperature(℃) Figure6. Feedback Voltage Curve Rev 1.0 www.xlsemi.com 6 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Typical System Application (VOUT=15V, IOUT=0~0.3A) Figure7. XL7026 System Application (VIN=16V~90V, VOUT=15V, IOUT=0~0.3A) Efficiency VS Output current 100 95 90 85 80 Efficiency(%) 75 70 65 60 55 VIN=24V,VOUT=15V,IOUT=0.1A~0.3A VIN=36V,VOUT=15V,IOUT=0.1A~0.3A VIN=48V,VOUT=15V,IOUT=0.1A~0.3A VIN=60V,VOUT=15V,IOUT=0.1A~0.3A VIN=72V,VOUT=15V,IOUT=0.1A~0.3A VIN=84V,VOUT=15V,IOUT=0.1A~0.3A 50 45 40 35 30 25 20 0.10 0.15 0.20 0.25 0.30 Output current(A) Figure8. XL7026 System Application (Efficiency VS Output Current) Rev 1.0 www.xlsemi.com 7 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Typical System Application (VOUT=5V, IOUT=0~0.6A) Figure9. XL7026 System Application (VIN=12V~90V, VOUT=5V, IOUT=0~0.6A) Efficiency VS Output current 90 85 80 75 70 Efficiency(%) 65 60 55 50 VIN=12V,VOUT=5V,IOUT=0.1A~0.6A VIN=24V,VOUT=5V,IOUT=0.1A~0.6A VIN=36V,VOUT=5V,IOUT=0.1A~0.6A VIN=48V,VOUT=5V,IOUT=0.1A~0.6A VIN=60V,VOUT=5V,IOUT=0.1A~0.6A VIN=72V,VOUT=5V,IOUT=0.1A~0.6A VIN=84V,VOUT=5V,IOUT=0.1A~0.6A 45 40 35 30 25 20 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 Output current(A) Figure10. XL7026 System Application (Efficiency VS Output Current) Rev 1.0 www.xlsemi.com 8 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Package Information Package Information (SOP8-EP) Rev 1.0 www.xlsemi.com 9 Datasheet 0.6A 150KHz 100V Buck DC to DC Converter XL7026 Important Notice XLSEMI reserve the right to make modifications, enhancements, improvements, corrections or other changes without notice at any time. XLSEMI does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. XLSEMI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using XLSEMI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguards. XLSEMI warrants performance of its products to the specifications applicable at the time of sale, in accordance with the warranty in XLSEMI’s terms and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent XLSEMI deems necessary to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily performed. For the latest product information, go to www.xlsemi.com. 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