Advanced Power Electronics Corp. APE6019 SYNCHRONOUS RECTIFIER DRIVER FEATURES DESCRIPTION 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 Secondary Voltage The fundamental of APE6019 synchronous rectifier (SR) driver IC is based on our U.S. patented methods that utilize the principle of “ prediction ” logic circuit. The IC deliberates previous 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. Due to this patented technology, APE6019 is suitable for either Forward or Flyback topology. Waveform. APPLICATIONS Servers & Workstations Storage Area Network Power Supplies Telecommunication Converters Embedded Systems Industrial & Commercial Systems Using High Current Processors TYPICAL APPLICATION Lm1 T1 VOUT +12Vdc Rt Lp Ls APE6019 Timing SYNC Pred Vdd VR MOSG-C Adj GND SR Mosfet Rs1 C3 Rg Rs2 C2 Q1 PACKAGE/ORDERING INFORMATION APE6019X-HF Package Type M : SO-8 Halogen Free ( Top View ) Timing 1 Pred 2 VR 3 Adj 4 APE6019 8 SYNC 7 VDD 6 MOSG-C 5 GND SO-8 Data and specifications subject to change without notice 1 201005242 Advanced Power Electronics Corp. APE6019 ABSOLUTE MAXIMUM RATINGS (TA=25oC, unless otherwise specified.) The following ratings designate persistent limits beyond which damage to the device may occur. DC Supply Voltage (VDD) --------------------------------- 16V Power Dissipation@TA=85oC (PD) --------------------- 0.25W Storage Temperature Range (T ST) -------------------- -40 to 150oC Operating Junction Temperature Range (T J) ------- -40 to 125oC Lead Soldering Temperature for 5 sec (T L) --------- 260oC Thermal Resistance Junction to Case (Rth jc)Note 45oC/W Thermal Resistance Junction to Ambient(Rth ja) 160°C/W Note. The power dissipation and thermal resistance are evaluated under copper board mounted with free air conditions. ELECTRICAL SPECIFICATIONS (TA=25oC, VDD=12V, Freq. =300 KHz, Duty Cycle=50%, unless otherwise specified.) Parameter SYM TEST CONDITION MIN TYP MAX UNITS - 4 7 mA VSYNC=0V, No load - 5 8 mA IDD peak < 2A - - 16 V SUPPLY INPUT No load Supply Current IDD Supply Voltage VDD Enable Voltage Vddon 9 10 11 V Vshth - 3.9 - V SYNC REFERENCE (SYNC) SYNC High Threshold SYNC Low Threshold Vslth SYNC Clamp Voltage Vsync SYNC Input Current Isync=3mA ISYNC - 0.9 - V - 5 - V - - 3 mA - - 20 mA - 20 - us Voltage Regulator REFERENCE (VR) VR Output Current IVR ON TIME DUTY SETUP ( PIN 6 ) Ton-Time MOSFET GATE DRIVER (MOSG-C) Output High Voltage Voh VCC=12V、IO = 200mA 10.5 - VCC V Output Low Voltage Vol - 0.5 0.8 V Source Current Ioh VCC=12V、IO = -200mA CLOAD = 10nF 1 1.2 A Sink Current Iol CLOAD = 10nF -1 -1.2 A Propagation Delay Td No load 50 80 - ns Pred Time TPred No load - 120 - ns Rise Time Tr No load (Note1) - 10 25 ns Fall Time Tf No load (Note1) - 10 25 ns Dynamic Protect Dynamic Variable Dt Pin 4 open - 600 - ns PWM adjusts time > Dt - 1 - us MOSG-C on Time Ton-min Note 1: Tr & Tf are measured among 10% and 90% of starting and final voltage. 2 Advanced Power Electronics Corp. APE6019 WAVEFORM DEFINITIONS PIN DESCRIPTIONS PIN SYMBOL Timing PIN DESCRIPTION Discontinuous current filter timing adjustment resistor connection. Capacitor to store previous cycle timing for SR MOSFET Pred VR Voltage Regulator Adj Trigger point adjustment for Dynamic state. Ground connection. GND Catch MOSFET gate drive. MOSG-C DC supply voltage. VDD Synchronized signal from the VDS of SR MOSFET SYNC BLOCK DIAGRAM Vdd VR REGULATOR UVLO SYNC 0. 9V Falling Edge Detector Main Control Star Gate Driver MOSG-C 3. 9V Stop Timing ∆T Duty Trigger Control P rediction Adj VR GND Pred 3 Advanced Power Electronics Corp. APE6019 TYPICAL PERFORMANCE CHARACTERISTICS *Fig. 1 : No Load ; No SYNC *Fig. 4~5 : Frequency = 100 kHz. 4 Advanced Power Electronics Corp. APE6019 MARKING INFORMATION SO-8 Part Number Package Code 6019M YWWSSS Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence 5 Advanced Power Electronics Corp. PACKAGE OUTLINE SO-8 APE6019