GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Features General Description The GS3663 regulator is a wide input range, current mode, DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. The GS3663 built in N-channel power MOSFET and fixed frequency oscillator, current-mode architecture results in stable operation over a wide range of supply and output voltages. The GS3663 regulator is special design for portable electronic equipment applications. Wide 5V to 32V Input Voltage Range Positive or Negative Output Voltage Programming with a Single Feedback Pin Current Mode Control Provides Excellent Transient Response 1.25V reference adjustable version Fixed 400KHz Switching Frequency Maximum 3A Switching Current SW PIN Built in Over Voltage Protection Excellent line and load regulation EN PIN TTL shutdown capability Internal Optimize Power MOSFET High efficiency up to 94% Built in Frequency Compensation Built in Soft-Start Function Built in Thermal Shutdown Function Built in Current Limit Function Available in TO263-5L package Applications EPC / Notebook Car Adapter Automotive and Industrial Boost Buck-Boost / Inverting Converters Portable Electronic Equipment / Figure1. Package Type of GS3663 web:http://www.zgsemi.com TEL:0755-27668758/29126058 1 www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Pin Configurations 此散热片为输出，不能接地 Figure2. Pin Configuration of GS3663 (Top View) Table 1 Pin Description Pin Number 1 Pin Name GND 2 EN 3 SW 4 VIN 5 FB Description Ground Pin. Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. Power Switch Output Pin (SW). Supply Voltage Input Pin. GS3663 operates from a 5V to 32V DC voltage. Bypass Vin to GND with a suitably large capacitor to eliminate noise on the input. Feedback Pin (FB). Through an external resistor divider network, FB senses the output voltage and regulates it. The feedback threshold voltage is 1.25V. web:http://www.zgsemi.com TEL:0755-27668758/29126058 2 www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Function Block Figure3. Function Block Diagram of GS3663 Typical Application Circuit GS3663 Figure4.GS3663 Typical Applicatio n Circuit (Boost Converter) web:http://www.zgsemi.com TEL:0755-27668758/29126058 3 www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Ordering Information Package Temperature Range Part Number Lead Free GS3663ZT Marking ID Lead Free GS3663HC Packing Type Tube ZGSEMI Pb-free products, as designated with “ZT” suffix in the par number, are RoHS compliant. Absolute Maximum Ratings（Note1） Parameter Symbol Vin VFB VEN VOutput PD Value -0.3 to 34 -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 (TO263-5L) (Junction to Ambient, No Heatsink, Free Air) Operating Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 sec) ESD (HBM) RJA 30 ºC/W TJ TSTG TLEAD -40 to 125 -65 to 150 260 2000 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. web:http://www.zgsemi.com TEL:0755-27668758/29126058 4 www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter GS3663 Electrical Characteristics Ta = 25℃;unless otherwise specified. Symbol Parameter Test Condition Min. Typ. Max. Unit 1.213 1.25 1.287 V - 92 - % System parameters test circuit figure4 Feedback Voltage VFB Efficiency Vin = 12V to 16V, Vout=18V Iload=0.1A to 2A Vin=12V ,Vout=18.5V Iout=2A ŋ Electrical Characteristics (DC Parameters) Vin = 12V, GND=0V, Vin & GND parallel connect a 220uf/50V capacitor; Iout=0.5A, Ta = 25℃; the others floating unless otherwise specified. Parameters Symbol Test Condition Min. Typ. 5 Max. Unit 32 V Input operation voltage Vin Shutdown Supply Current ISTBY VEN=0V 70 100 uA Quiescent Supply Current Iq VEN =2V, VFB =Vin 2.5 5 mA 400 480 Khz Oscillator Frequency Fosc Switch Current Limit IL VFB =0 3 A VEN High (Regulator ON) Low (Regulator OFF) 1.4 0.8 V IH VEN =2V (ON) 3 10 uA IL VEN =0V (OFF) 3 10 uA DMAX VFB=0V 95 EN Pin Threshold EN Pin Input Leakage Current Max. Duty Cycle 324 web:http://www.zgsemi.com TEL:0755-27668758/29126058 5 % www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Schottky Diode Selection Table Current 1A 3A Surface Through VR (The same as system maximum input voltage) Mount Hole 20V 30V 40V 50V 1N5817 1N5818 1N5819 √ √ 1N5820 1N5821 1N5822 √ MBR320 MBR330 MBR340 MBR350 MBR360 SK32 SK33 SK34 SK36 30WQ03 30WQ04 30WQ05 31DQ03 31DQ04 31DQ05 SR305 SR306 √ √ √ 5A 60V SK35 √ SR302 SR303 SR304 √ 1N5823 1N5824 1N5825 √ SR502 SR503 SR504 SR505 SR506 √ SB520 SB530 SB540 SB550 SB560 50WQ03 50WQ04 50WQ05 √ Typical System Application for EPC/Notebook Car Adapter – Boost (Output 18.5V/2.5A) GS3663 Figure5. GS3663 Typical System Application (Boost Converter) web:http://www.zgsemi.com TEL:0755-27668758/29126058 6 www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Typical System Application for Portable Notebook Car Adapter – SEPIC Buck-Boost Topology (Input 10V~30V, Output 12V/2A) GS3663 Figure6. GS3663 Typical System Application (SEPIC Buck-Boost Converter) Typical System Application for Boost High Voltage Converter – FLYBACK Boost Topology (Input 10V~30V, Output 300V/0.1A ~ 0.5A) GS3663 Figure7. GS3663 Typical System Application (Flyback Boost Converter) web:http://www.zgsemi.com TEL:0755-27668758/29126058 7 www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Typical System Application for Inverting Converter – SEPIC Inverting Topology (Input 10V~30V, Output + -12V/1A) L1C D1 1N5825 VOUT -12V COUT 220uf/50V CDC 22uf/50V VOUT +12V L1A SW 3 VIN 4 CDC 22uf/50V GS3663 1 GND VIN CIN 47uf /50V 105 D1 1N5825 L1B FB 5 2 EN R2 8.6K R1 1K 105 COUT 220uf/50V ON OFF SEPIC + - Converter Input 10V ~ 30V Output +-12V / 1A VOUT=1.25*(1+R2/R1) Figure8. GS3663 Typical System Application (SEPIC Inverting Converter) web:http://www.zgsemi.com TEL:0755-27668758/29126058 8 www.086ic.cn GS3663 400KHz 42V 3A Switching Current Boost / Buck-Boost / Inverting DC/DC Converter Package Information TO263-5L web:http://www.zgsemi.com TEL:0755-27668758/29126058 9 www.086ic.cn