SP6018

SP6018 Synchronous Rectifier Driver DESCRIPTION The fundamental of SP6018 synchronous rectifier (SR) driver IC is based on our U.S. patented methods that utilize the principle of “prediction” logic circuit. The IC deliberatesprevious cycle timing to control the SR in present cycle by “predictive” algorithm that makes adjustments to the turn-off time, in order to achieve maximum efficiency and avoid cross-conduction at the same time. Specially, SP6018 is designed for Resonance. It also maintains the MOSFET’s body diode conduction at minimum level. The SP6018 is capable to adapt in almost all existing adaptors with few adjustments considered necessary. FEATURES • Offers efficiency improvement over Schottky Diode (depends on drive configuration of the SR). • • • • • Drives all Power MOSFET. Prediction gate timing control. Minimum MOSFET body diode conduction. Operating frequency up to 400 KHz. Synchronize to transformer voltage waveform. secondary PART MARKING APPLICATIONS • Servers & workstations • • • • Storage area network power supplies Telecommunication converters Embedded systems Industrial & commercial systems using high current processors PIN CONFIGURATION (SOP-8) 2009/11/04 Ver.2 Page 1 SP6018 Synchronous Rectifier Driver TYPICAL APPLCATION CIRCUIT PIN DESCRIPTION Pin 1 2 3 4 5 6 7 8 Symbol Timing Pred VR Adj GND MOSG-C Vdd SYNC Description Discontinuous current filter timing adjustment resistor connection. Capacitor to store previous cycle timing for SR MOSFET. Voltage Regulator. Trigger point adjustment for Dynamic state. Ground connection. Catch MOSFET gate drive. DC supply voltage. Synchronized signal from the VDS of SR MOSFET. 2009/11/04 Ver.2 Page 2 SP6018 Synchronous Rectifier Driver BLOCK DIAGRAM ORDERING INFORMATION Part Number Package Part Marking SP6018I SP6018I SP6018S8RGB SOP-8 SP6018S8TGB SOP-8 ※ SP6018S8RGB : 7” Tape Reel ; Pb – Free ; Halgon – Free ※ SP6018S8TGB : Tube ; Pb – Free ; Halgon – Free ABSOULTE MAXIMUM RATINGS (TA=25℃, unless otherwise specified.) The following ratings designate persistent limits beyond which damage to the device may occur. Symbol Vdd IOUT PD TJ TSTG TLEAD Parameter DC Supply Voltage Peak Source Current (Pulsed) Peak Sink Current (Pulsed) Power Dissipation @ TA=85℃ (*) Operating Junction Temperature Range Storage Temperature Range Lead Soldering Temperature for 5 sec. Value 16 1 1 0.25 -40 to125 -40 to 150 260 Unit V A A W ℃ ℃ ℃ 2009/11/04 Ver.2 Page 3 SP6018 Synchronous Rectifier Driver THERMAL RESISTANCE Symbol RӨJC Parameter Thermal Resistance Junction – Case (*) Value 45 Unit ℃/W (*) The power dissipation and thermal resistance are evaluated under copper board mounted with free air conditions. ELECTRICAL CHARACTERISTICS (TA=25℃, Vdd=12V, Freq. =300 KHz, Duty Cycle=50%, unless otherwise specified.) Symbol SUPPLY INPUT IDD Parameter Supply current Conditions No load VSYNC=0V, No load Idd peak < 2A Min. Typ. 4 5 Max. 7 8 16 11.0 Unit mA mA V V V V V mA mA us V V ns ns ns ns ns us Vdd Supply voltage Vdd on Enable voltage SYNC REFERENCE (SYNC) Vshth SYNC high threshold Vslth SYNC low threshold Vsync SYNC clamp voltage Isync SYNC input current Voltage Regulator REFERENCE (VR) IVR VR Output Current ON TIME DUTY SETUP ( PIN 6 ) Ton-time MOSFET GATE DRIVER (MOSG-C) Voh Output high voltage Vol Output low voltage Td Propagation delay Tpred Tr Rise time Tf Fall time Dynamic Protect Dt Dynamic variable Ton-min MOSG-C on time 9.0 10.0 3.9 0.9 5 Isync=3mA 3 20 20 Io = -200mA Io = 200mA No load No load No load No load Pin 4 open PWM adjusts time > Dt 10.5 50 11 0.5 80 120 10 10 600 1 0.8 25 25 (*) Tr & Tf are measured among 10% and 90% of starting and final voltage. 2009/11/04 Ver.2 Page 4 SP6018 Synchronous Rectifier Driver PERFORMANCE CHARACTERISTICS (TA=25℃, unless otherwise specified.) *Fig. 1 : No Load ; No SYNC *Fig. 4~5 : Frequency = 100 kHz. 2009/11/04 Ver.2 Page 5 SP6018 Synchronous Rectifier Driver SOP- 8 PACKAGE OUTLINE 2009/11/04 Ver.2 Page 6 SP6018 Synchronous Rectifier Driver Information provided is alleged to be exact and consistent. SYNC Power Corporation presumes no responsibility for the penalties of use of such information or for any violation of patents or other rights of third parties, which may result from its use. No license is granted by allegation or otherwise under any patent or patent rights of SYNC Power Corporation. Conditions mentioned in this publication are subject to change without notice. This publication surpasses and replaces all information previously supplied. SYNC Power Corporation products are not authorized for use as critical components in life support devices or systems without express written approval of SYNC Power Corporation. ©The SYNC Power logo is a registered trademark of SYNC Power Corporation ©2004 SYNC Power Corporation – Printed in Taiwan – All Rights Reserved SYNC Power Corporation 7F-2, No. 3-1, Park Street NanKang District (NKSP), Taipei, Taiwan, 115, R.O.C Phone: 886-2-2655-8178 Fax: 886-2-2655-8468 http://www.syncpower.com 2009/11/04 Ver.2 Page 7