SP6018_Datasheet_Ver1

DESCRIPTION APPLICATIONS

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 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. 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.

? Servers & workstations

? Storage area network power supplies ? Telecommunication converters ?

Embedded systems

? Industrial & commercial systems using high current processors

FEATURES PIN CONFIGURATION (SOP-8)

PART MARKING ? 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 650 KHz.

? Synchronize to transformer secondary voltage waveform.

TYPICAL APPLCATION CIRCUIT

PIN DESCRIPTION

Pin Symbol Description

1 Timing Discontinuous current filter timing adjustment resistor connection.

2 Pred Capacitor to store previous cycle timing for SR MOSFET.

Regulator.

V oltage

3 VR

4 Adj Trigger point adjustment for Resonance.

Ground

connection.

5 GND

6 MOSG-C Catch MOSFET gate drive.

7 Vdd DC supply voltage.

8 SYNC Synchronized signal from the V DS of SR MOSFET.

BLOCK DIAGRAM

ORDERING INFORMATION

Part Number Package Part Marking

SP6018S8RGB SOP-8 SP6018I

SP6018S8TGB SOP-8 SP6018I

※ 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 Parameter Value Unit

17

Power Dissipation @ T 0.25

Operating Junction Temperature Range

Storage Temperature Range

Lead Soldering Temperature for 5 sec.

THERMAL RESISTANCE

Symbol Parameter Value Unit

℃R?JC Thermal Resistance Junction – Case (*) 45 /W

(*) The power dissipation and thermal resistance are evaluated under copper board mounted with free air conditions.

ELECTRICAL CHARACTERISTICS

℃dd=12V, Freq. =300 KHz, Duty Cycle=50%, unless otherwise specified.)

(T A=25, V

Typ.

Max.Unit Symbol Parameter Conditions Min.

SUPPLY INPUT

No loa d ,Vdd=12V 10 16

mA

current

I DD Supply

V SYNC=0V , No load 7.5 10 mA V onth Vdd turn on threshold 11.2 11.5 V

V offth Vdd turn off threshold 10.5 10..8 V

SYNC REFERENCE (SYNC)

threshold 3.9 5.0 V high

Vshth SYNC

Vslth SYNC low threshold 0.9 1.2 V

Isync SYNC input current 3 mA

Voltage Regulator REFERENCE (VR)

Current 25 mA

I VR VR

Output

ON TIME DUTY SETUP ( PIN 6 )

T on-time10 us MOSFET GATE DRIVER (MOSG-C)

V oh Output high voltage Io= -200mA 10.5 11 V V ol Output low voltage Io= 200Ma 0.5 0.8

V

load 80 100 ns Td Propagation

delay No

load 120 ns Tpred No

Tr Rise time No load 10 25 ns

Tf Fall time No load 10 25 ns

(*) Tr & Tf are measured among 10% and 90% of starting and final voltage.

PERFORMANCE CHARACTERISTICS(T A=25, unless otherwise specified.)

℃

*Fig. 1 : No Load ; No SYNC *Fig. 4~5 : Frequency = 65 kHz.

SOP- 8 PACKAGE OUTLINE

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

9F-5, No.3-2, Park Street

NanKang District (NKSP), Taipei, Taiwan, 115, R.O.C

Phone: 886-2-2655-8178

Fax: 886-2-2655-8468

https://www.sodocs.net/doc/bd17597478.html,