SP6018 Synchronous Rectifier Driver

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 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 Resonance
converters with few adjustments considered
necessary.
APPLICATIONS
 Servers & workstations
FEATURES
 Offers efficiency improvement over Schottky
Diode (depends on drive configuration of the
SR).
PIN CONFIGURATION (SOP-8)

Drives all logic level Power MOSFET.

Prediction gate timing control.

Minimum MOSFET body diode conduction.

Operating frequency up to 400 KHz.

Synchronize to transformer
voltage waveform.
2013/06/13
Ver.5
secondary

Storage area network power supplies

Telecommunication converters

Embedded systems

Industrial & commercial systems using high
current processors
PART MARKING
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SP6018
Synchronous Rectifier Driver
TYPICAL APPLCATION CIRCUIT
PIN DESCRIPTION
Pin
Symbol
1
2
3
4
5
6
7
8
Timing
Pred
VR
Adj
GND
MOSG-C
Vdd
SYNC
2013/06/13
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.
Ver.5
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SP6018
Synchronous Rectifier Driver
BLOCK DIAGRAM
ORDERING INFORMATION
Part Number
Package
Part Marking
SP6018S8RGB
SOP-8
SP6018S8TGB
SOP-8
※ SP6018S8RGB : 7” Tape Reel ; Pb – Free ; Halogen - Free
SP6018I
SP6018I
※ SP6018S8TGB : Tube ; Pb – Free ; Halogen - 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.
2013/06/13
Ver.5
Value
16
2.0
2.0
0.25
-40 to125
-40 to 150
260
Unit
V
A
A
W
℃
℃
℃
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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. =50 KHz, Duty Cycle=50%, unless otherwise specified.)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
4
5
7
8
16
10.5
mA
mA
V
V
1.2
7
3
V
V
V
mA
20
mA
20
us
SUPPLY INPUT
IDD
Supply current
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
No load
VSYNC=0V, No load
Idd peak < 2A
9.4
10.0
3.5
3.9
0.9
5
Isync=3mA
19
Io = -200mA
Io = 200mA
No load
No load
Load = 1nF (*)
Load = 1nF (*)
Pin 4 open
PWM adjusts time > Dt
10.5
50
11.0
0.5
80
120
10
10
0.8
25
25
600
1
ns
us
(*) Tr & Tf are measured among 10% and 90% of starting and final voltage.
2013/06/13
Ver.5
V
V
ns
ns
ns
ns
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SP6018
Synchronous Rectifier Driver
PERFORMANCE CHARACTERISTICS (TA=25℃, unless otherwise specified.)
*Fig. 1 : No Load ; No SYNC
*Fig. 4~5 : Frequency = 65 kHz.
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Ver.5
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SP6018
Synchronous Rectifier Driver
SOP- 8 PACKAGE OUTLINE
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Ver.5
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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
2013/06/13
Ver.5
Page 8