XL7025

Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 Features General Description „ „ „ „ „ „ „ The XL7025 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. „ „ „ „ „ „ „ „ Wide 10V to 80V Operation Voltage Output Adjustable from 1.25V to 20V Maximum Duty Cycle 100% Minimum Drop Out 1V Fixed 150KHz Switching Frequency Maximum 0.6A Output Current Recommend Maximum 0.6A Output Current At 5V Output,48V Input Recommend Maximum 0.3A Output Current At 15V Output,48V Input Internal Optimize HV Power Transistor High efficiency up to 85% Excellent line and load regulation Built in thermal shutdown function Built in output short Protection Function Built in current limit function TO252-5L package The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An over current protection function is built inside. When output short protection function happens, the operation frequency will be reduced from 150KHz to 45KHz. An internal compensation block is built in to minimize external component count. Applications „ „ Ebike Controller Power Supply Telecom / Networking Equipment Figure1. Package Type of XL7025 Rev 1.0 www.xlsemi.com 1 Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 Pin Configurations Figure2. Pin Configuration of XL7025 (Top View) Table 1 Pin Description Pin Number Pin Name 1 VIN 2 SW 3 GND 4 FB 5 OGND Description Supply Voltage Input Pin. XL7025 operates from a 10V to 80V 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. 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 XL7025. The exposed PAD is GND. Feedback Pin (FB). Through an external resistor divider network, Feedback senses the output voltage and regulates it. The feedback threshold voltage is 1.25V. Output Ground Pin. Rev 1.0 www.xlsemi.com 2 Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 Function Block Figure3. Function Block Diagram of XL7025 Typical Application Circuit VIN 1 2 SW D1 S210 XL7025 VIN 16V~80V CIN 100uF/100V C1 104 3 5 GND L1 100uH/1A 4 R2 30K 1% CFF 33nF C3 105 COUT 100uF/35V VOUT 15V/0~0.3A FB OGND R1 2.7K 1% R3 0.28Ω 1% INPUT 16V~80V OUTPUT 15V/0~0.3A VOUT=1.25*(1+R2/R1) R3 for limit maximum output current, R3 choose 0.15ohm in VOUT≤5V application; R3 choose 0.28ohm in VOUT>5V application. Figure4. XL7025 Typical Application Circuit Rev 1.0 www.xlsemi.com 3 Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 Ordering Information Order Information XL7025E1 Marking ID XL7025E1 Package Type TO252-5L 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 VEN VSW PD Value -0.3 to 85 -0.3 to Vin -0.3 to Vin -0.3 to Vin Internally limited Unit V V V V mW Input Voltage Feedback Pin Voltage EN Pin Voltage Output Switch Pin Voltage Power Dissipation Thermal Resistance (TO252-5L) (Junction to Ambient, No Heatsink, Free Air) Maximum Junction Temperature Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) ESD (HBM) RJA 50 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 80V Buck DC to DC Converter XL7025 XL7025 Electrical Characteristics Ta = 25℃;unless otherwise specified. Symbol Parameter Test Condition Min. Typ. Max. Unit 1.225 1.25 1.275 V - 86 - % - 83 - % - 80 - % System parameters test circuit figure4 VFB FB Voltage ŋ Efficiency ŋ Efficiency ŋ Efficiency Vin =20V to 80V,Vout=15V Iload=0.1A to 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 Quiescent Supply Current Symbol Test Condition Vin Min. Max. Unit 80 V 8 9 V 2.5 5 mA 150 180 KHz 10 Vin_uvlo Iq Typ. VFB=2V Oscillator Frequency Fosc Switch Current Limit IL VFB=0 R3=0.15Ω 0.667 A VCE VFB=0V Iout=0.5A 0.87 V DMAX VFB=0V 100 % Output Saturation Voltage Max. Duty Cycle 120 Rev 1.0 www.xlsemi.com 5 Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 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 80V Buck DC to DC Converter XL7025 Typical System Application(VOUT=15V/0.3A) VIN 1 2 L1 100uH/1A SW D1 S210 XL7025 VIN 16V~80V CIN 100uF/100V C1 104 3 5 4 CFF 33nF C3 105 COUT 100uF/35V VOUT 15V/0~0.3A FB OGND GND R2 30K 1% R1 2.7K 1% R3 0.28Ω 1% INPUT 16V~80V OUTPUT 15V/0~0.3A VOUT=1.25*(1+R2/R1) Figure7. XL7025 System Application (VIN=16V~80V, VOUT=15V/0.3A) Efficiency VS Output current 95 90 85 80 75 Efficiency(%) 70 65 60 55 VIN=24V,VOUT=15V,IOUT=0.1~0.3A VIN=36V,VOUT=15V,IOUT=0.1~0.3A VIN=48V,VOUT=15V,IOUT=0.1~0.3A VIN=60V,VOUT=15V,IOUT=0.1~0.3A VIN=72V,VOUT=15V,IOUT=0.1~0.3A 50 45 40 35 30 25 20 0.10 0.15 0.20 0.25 0.30 Ouput current(A) Figure8. XL7025 System Application (Efficiency VS Output Current) Rev 1.0 www.xlsemi.com 7 Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 Typical System Application(VOUT=5V/0.6A) VIN 1 2 L1 100uH/1A SW D1 S210 XL7025 VIN 10V~80V CIN 100uF/100V C1 104 3 5 GND 4 R2 10K 1% CFF 33nF C3 105 COUT 100uF/16V VOUT 5V/0~0.6A FB OGND R1 3.3K 1% R3 0.15Ω 1% INPUT 10V~80V OUTPUT 5V/0~0.6A VOUT=1.25*(1+R2/R1) Figure9. XL7025 System Application (VIN=10V~80V, VOUT=5V/0.6A) Efficiency VS Output current 90 85 80 75 70 Efficiency(%) 65 60 55 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 50 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. XL7025 System Application (Efficiency VS Output Current) Rev 1.0 www.xlsemi.com 8 Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 Package Information Package Information (TO252-5L) Rev 1.0 www.xlsemi.com 9 Datasheet 0.6A 150KHz 80V Buck DC to DC Converter XL7025 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. Rev 1.0 www.xlsemi.com 10