SP6013A
Synchronous Rectifier Driver
DESCRIPTION
The fundamental of SP6013A 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. It also
maintains the MOSFET’s body diode conduction
at minimum level. The SP6013A is capable to
adapt in almost all existing flyback converters
with few adjustments considered necessary.
FEATURES
•
Offers efficiency improvement over Schottky
Diode (depends on drive configuration of the
SR).
•
•
•
•
•
Drives all logic level Power MOSFET.
Prediction gate timing control.
Minimum MOSFET body diode conduction.
Operating frequency up to 650 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)
2007/07/10
Ver.2
Page 1
SP6013A
Synchronous Rectifier Driver
TYPICAL APPLCATION CIRCUIT
PIN DESCRIPTION
Pin
1
2
3
4
5
6
7
8
Symbol
Timing
Pred
VR
Cramp
GND
MOSG-C
Vdd
SYNC
Description
Discontinuous current filter timing adjustment resistor connection.
Capacitor to store previous cycle timing for Catch MOSFET
Voltage Regulator
Ramp capacitor adjustment to extend MOSFET’s gate timing.
Ground connection.
Catch MOSFET gate drive.
DC supply voltage.
Synchronized signal from transformer’s output.
2007/07/10
Ver.2
Page 2
SP6013A
Synchronous Rectifier Driver
BLOCK DIAGRAM
ORDERING INFORMATION
Part Number
Package
Part Marking
SP6013AI
SP6013AI
SP6013AS8RG
SOP-8
SP6013AS8TG
SOP-8
※
SP6013AS8RG : 7” Tape Reel ; Pb – Free
※
SP6013AS8TG : Tube ; Pb – Free
ABSOULTE MAXIMUM RATINGS
(TA=25
℃
, unless otherwise specified.)
The following ratings designate persistent limits beyond which damage to the device may occur
.
Symbol
V
dd
SYNC
I
OUT
P
D
T
J
T
STG
T
LEAD
Parameter
DC Supply Voltage
SYNC Voltage
Peak Source Current (Pulsed)
Peak Sink Current (Pulsed)
Power Dissipation @ T
A
=85
℃
(*)
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature for 5 sec.
Value
17
7
3
3
0.25
-40 to125
-40 to 150
260
Unit
V
V
A
A
W
℃
℃
℃
2007/07/10
Ver.2
Page 3
SP6013A
Synchronous Rectifier Driver
THERMAL RESISTANCE
Symbol
R
ӨJC
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
(T
A
=25
℃
, V
dd
=12V, Freq. =300 KHz, Duty Cycle=50%, unless otherwise specified.)
Symbol
SUPPLY INPUT
I
DD
Parameter
Supply current
Conditions
No load
V
SYNC
=0V, No load
Min.
Typ.
10
7.5
9.5
8.5
5.0
0.9
11.8
0.1
35
120
10
10
Max.
16
10
10
Unit
mA
mA
V
V
V
V
V
V
ns
ns
ns
ns
Vonth
Vdd turn on threshold
Voffth
Vdd turn off threshold
SYNC REFERENCE
(SYNC)
Vshth
SYNC high threshold
Vslth
SYNC low threshold
MOSFET GATE DRIVER
(MOSG-C)
Voh
Output high voltage
Vol
Output low voltage
Td
Propagation delay
Tpred
Tr
Rise time
Tf
Fall time
8
3.9
1.2
Io
= -200mA
Io
= 200mA
No load
No load
Load = 1nF (*)
Load = 1nF (*)
11.5
15
0.2
25
25
(*) Tr & Tf are measured among 10% and 90% of starting and final voltage.
2007/07/10
Ver.2
Page 4
SP6013A
Synchronous Rectifier Driver
PERFORMANCE CHARACTERISTICS
(T
A
=25℃, unless otherwise specified.)
*Fig. 1 : No Load ; No SYNC
*Fig. 4~5 : Frequency = 65 kHz.
2007/07/10
Ver.2
Page 5
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