SiC639
www.vishay.com
Vishay Siliconix
S18-0300-Rev. A, 19-Mar-18
8
Document Number: 76585
For technical questions, contact: powerictechsupport@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
ELECTRICAL CHARACTERISTICS
Test condition: V
IN
= 13 V, DSBL# = V
DRV
= V
CIN
= 5 V, ZCD_EN# = 5 V, V
OUT
= 1 V, L
OUT
= 250 nH (DCR = 0.32 m), T
A
= 25 °C,
natural convection cooling (All power loss and normalized power loss curves show SiC639 and SiC639A losses only unless otherwise stated)
Fig. 6 - Efficiency vs. Output Current (V
IN
= 12.6 V)
Fig. 7 - Power Loss vs. Switching Frequency (V
IN
= 12.6 V)
Fig. 8 - Efficiency vs. Output Current (V
IN
= 9 V)
Fig. 9 - Safe Operating Area
Fig. 10 - Power Loss vs. Output Current (V
IN
= 12.6 V)
Fig. 11 - Efficiency vs. Output Current (V
IN
= 19 V)
62
66
70
74
78
82
86
90
94
0 5 10 15 20 25 30 35 40 45 50
Efciency (%)
Output Current, I
OUT
(A)
Complete converter efciency
P
IN
= [(V
IN
x I
IN
) + 5 V x (I
VDRV
+ I
VCIN
)]
P
OUT
= V
OUT
x I
OUT
, measured at output capacitor
1 MHz
750 kHz
500 kHz
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
200 300 400 500 600 700 800 900 1000 1100
Power Loss, P
L
(W)
Switching Frequency, fs (KHz)
I
OUT
= 25A
62
66
70
74
78
82
86
90
94
98
0 5 10 15 20 25 30 35 40 45 50
Efciency (%)
Output Current, I
OUT
(A)
Complete converter efciency
P
IN
= [(V
IN
x I
IN
) + 5 V x (I
VDRV
+ I
VCIN
)]
P
OUT
= V
OUT
x I
OUT
, measured at output capacitor
1 MHz
750 kHz
500 kHz
15
20
25
30
35
40
45
50
55
0 153045607590105120135150
Output Current, I
OUT
(A)
PCB Temperature, T
PCB
(°C)
1 MHz
500 kHz
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
0 5 10 15 20 25 30 35 40 45
Power Loss, P
L
(W)
Output Current, I
OUT
(A)
750 kHz
1 MHz
500 kHz
62
66
70
74
78
82
86
90
94
0 5 10 15 20 25 30 35 40 45 50
Efciency (%)
Output Current, I
OUT
(A)
Complete converter efciency
P
IN
= [(V
IN
x I
IN
) + 5 V x (I
VDRV
+ I
VCIN
)]
P
OUT
= V
OUT
x I
OUT
, measured at output capacitor
1 MHz
500 kHz
750 kHz