SiDB766707

SiDB766707
Vishay Siliconix
SiC714CD10 MOSFET Plus Driver Evaluation Board
FEATURES
• MOSFET Plus Driver PowerPAK® MLF 10 x 10 Product
Demonstration
• 10 V to 14 V Input Voltage
• Switching Frequency: 100 kHz to > 1 MHz
• Up to 27 A Output Current
DESCRIPTION
The SiDB766707 evaluation board provides a reference design for evaluating the performance of the
SiC714CD10. The module contains all of the circuitry
necessary to control a synchronous buck converter in
voltage mode configuration. This document explains
how to construct basic power conversion circuits using
the SiC714CD10 and includes test results.
The evaluation board includes a voltage mode controller (TL5001), power up/down sequence circuitry, and a
linear regulator (7805) which generates a 5 V output
from a 12 V input for control voltage supply. The board
is fully assembled and tested and ready for immediate
use.
Included in this document are the Bill-Of-Material,
Schematics, PCB Layout, and test results.
ORDERING INFORMATION
EVB Order Number
VIN
VOUT
SiDB766707-B
12 V
3.3 V
SiDB766707-C
12 V
2.5V
SiDB766707-D
12 V
1.3 V
The evaluation board layout is available in Gerber file format. Please
contact your Vishay sales representative or distributor for a copy.
TEST SET UP
Figure 1 shows the input-output connections to the
SiDB766707.
Note: Before making any EVB set up changes it is
strongly advised to power down and disconnect power
supplies.
OPERATING SPECIFICATIONS
Table 1 summarizes the performance specifications of
the SiDB766707.
TABLE 1
Operating Specifications (as shipped)
Specification
Input Voltage Range (VIN)
Min
Typ
Max
Units
10
12
14
V
Output Voltage (VOUT)
SiDB766707-B
SiDB766707-C
SiDB766707-D
3.3
2.5
1.3
V
V
V
Output Current (IOUT)
(12 VIN/2.5 VOUT, FSW = 300 kHz)
27
A
Efficiency
(12 VIN/2. 5 VOUT, IOUT = 7 A)
94.5
%
Operating Frequency
300
kHZ
Figure 1. Test Set Up
Document Number: 73282
17-Mar-06
www.vishay.com
1
SiDB766707
Vishay Siliconix
SWITCHING FREQUENCY ADJUSTMENT
The switching frequency can be selected by changing
the resistance of R15. Table 2 shows typical switching
frequency relative to the R15 value. The SiDB766707
EVB comes preset with an R15 of 22.6 kΩ for 300 kHz
operation.
JUMPER PIN DESCRIPTION
TABLE 4
Description
Selection of LDO (7805) input voltage:
JP1
TABLE 2
Frequency vs. R15
Frequency
22.6 kΩ
400 kHz
15 kΩ
(1) short; LDO input voltage = VIN
(2) open; The LDO input voltage must be
supplied from DCIN (J1) externally.
Short
SYNC Selection:
R15
300 kHz
Default
JP2
OUTPUT VOLTAGE PROGRAMMING
The output voltage can be programmed by selecting
four components as shown in Table 3.
JP3
JP4
(1) short to VDD = normal PWM
(2) short to GND = SYNC enabled, i.e. the
low-side MOSFET is disabled and is held
in the of state
Short to
VDD
Selection of a shunt resistor (R12)
Short
TABLE 3
VOUT
R17
R5
C6
C7
3.3 V
7.68 kΩ
10 kΩ
5.6 nF
220 pF
2.5 V
4.99 kΩ
7.68 kΩ
6.8 nF
220 pF
1.3 V
1 kΩ
3.4 kΩ
15 nF
1800 pF
ELECTRICAL PERFORMANCE
The SiDB766707 evaluation board provides optimum
efficiency. Typical performance is shown in Figure 2 to
Figure 4. Note that the efficiency was obtained after
U1, U2 and U3 (see schematic) were disabled. For the
efficiency measurements, an external function generator was used to generate PWM signals for open-loop
operation.
9
94
8
92
90
7
88
6
Total Loss (W)
Efficiency (%)
300 kHz
86
84
82
700 kHz
5
500 kHz
4
300 kHz
3
700 kHz
2
80
500 kHz
78
1
0
76
0
10
20
Output Current – (A)
Figure 2. Total Efficiency 12 VIN/1.3 VOUT
www.vishay.com
2
30
0
5
10
15
20
25
30
Output Current – (A)
Figure 3. Total Loss 12 VIN/2.5 VOUT
Document Number: 73282
17-Mar-06
SiDB766707
Vishay Siliconix
ELECTRICAL PERFORMANCE
Figure 4. Measured Switch Voltage VSW (VIN = 12 V, VOUT = 2.5 V, IOUT = 20 A)
Document Number: 73282
17-Mar-06
www.vishay.com
3
SiDB766707
Vishay Siliconix
LAYOUT
Figure 5. Top Silk Screen
Figure 6. Top Layer
Figure 7. Internal Power Layer; 2nd Layer
Figure 8. Internal Power Layer; 3rd Layer
Figure 9. Bottom Silk Screen
Figure 10. Bottom Layer
www.vishay.com
4
Document Number: 73282
17-Mar-06
SiDB766707
Vishay Siliconix
TABLE 5
Bill-of-Materials of Sic714CD10 MOSFET plus driver EVB - SiDB766707
Designator
Qty
Part Number
Description
Size
Manufacturer
M2
1
SiC714CD10
MLF 10 x 10, VDS 20 V
MLF10 x 10
Vishay
R1
R2, R6, R7, R8, R9
R3, R4
1
5
2
1
1
1
1
1
1
2
1
1
1
1
1
1
1
CRCW0603000ZRT1
CRCW0603103JRT1
CRCW0603202JRT1
CRCW0603103JRT1
CRCW06037681FRT1
CRCW06033401FRT1
CRCW0603100JRT1
CRCW0603473JRT1
CRCW0603754JRT1
CRCW06022632FRT1
CRCW06033321FRT1
CRCW06037681FRT1
CRCW06034991FRT1
CRCW06031001FRT1
CRCW06037681FRT1
CRCW06037681FRT1
CRCW06031240FRT1
RES, 0 Ω 5 % 1/16 W 0603
RES, 10 kΩ 5 % 1/16 W 0603
RES, 2 kΩ 5 % 1/16 W 0603
SiDB766707-B - RES, 10 kΩ 5 % 1/16 W 0603
SiDB766707-C -RES, 7.68 kΩ 1 % 1/16 W 0603
SiDB766707-D - RES, 3.4 kΩ, 1 % 1/16 W
RES, 10 Ω 5 % 1/16 W 0603
RES, 47 kΩ 5 % 1/16 W 0603
RES, 750 kΩ 5 % 1/16 W 0603
RES, 22.6 kΩ 1 % 1/16 W 0603
RES, 3.32 kΩ 1 % 1/16 W 0603
SiDB766707-B - RES, 7.68 kΩ 1 % 1/16 W
SiDB766707-C -RES, 4.99 kΩ 1 % 1/16 W
SiDB766707-D - RES, 1 kΩ 1 % 1/16 W
SiDB766707-B - RES, 7.68 kΩ 1 % 1/16 W 0603
SiDB766707-C -RES, 7.68 kΩ 1 % 1/16 W 0603
SiDB766707-D - RES, 124 Ω , 1 % 1/16 W
603
603
603
603
603
603
603
603
603
603
603
603
603
603
603
603
603
Vishay
C25, C26
2
5
1
1
1
1
1
1
1
1
1
3
4
1
1
1
0
18123D106KAT2A
VJ0805Y104KXAC W1BC
VJ0805G225KXQC W1BC
VJ0603Y562KXAAC
VJ0603Y682KXAAC
VJ0603Y153KXAAC
VJ0603Y221KXAAC
VJ0603Y221KXAAC
VJ0603Y182KXAAC
VJ0603Y472KXAAC
VJ0603Y222KXAAC
594D227X0010D
VJ1206G106KXYC W1BC
VJ0603Y222KXAAC
VJ0603Y222KXAAC
VJ0603Y393KXAAC
NOT POPULATED
Ceramic CAP, 10 µF_1812_25 V, X5R
Ceramic CAP, 0.1 µF 50 V X7R 0805
Ceramic CAP, 2.2 µF 10 V X5R 0805
SiDB766707-B - CAP, 5.6 nF 50 V X7R 0603
SiDB766707-C -CAP, 6.8 nF 50 V X7R 0603
SiDB766707-D - CAP, 0.015 µF 50 V X7R
SiDB766707-B - CAP, 220 pF 50 V X7R 0603
SiDB766707-C -CAP, 220 pF 50 V X7R 0603
SiDB766707-D - CAP, 1800 pF 50 V X7R
Ceramic CAP, 4700 pF 50 V X7R 0603
Ceramic CAP, 2200 pF 50 V X7R 0603
CAP 220 µF
Ceramic CAP, 10 µF 6.3 V X5R 1206
SiDB766707-B - CAP, 2200 pF 50 V X7R
SiDB766707-C - CAP, 2200 pF 50 V X7R
SiDB766707-D - CAP, 0.039 µF 50 V X7R
CAP 220 µF
1812
805
805
603
603
603
603
603
603
603
603
D
1206
603
603
603
C
Q1
Q2
Q3
1
1
1
TP0610T
2N7002E
Si1032X
P MOSFET TP0610T
N MOSFET 2N7002E
N MOSFET Si1032X
SOT-23
SOT-23
SC89-3
Vishay
U1
U2
U3
1
1
1
DG2012DL
TL5001
MC78L05 AC S
Analog Switch
PWM Controller
Linear Regulator
SC70-10
SO-8
SO-8
Vishay
Texas Instruments
Motorola
13 x 13 mm
12.8 x 14.2 mm
13 x 13 mm
12.8 x 14.2 mm
13 x 13 mm
12.8 x 14.2 mm
Vishay
R5
R10
R11
R13
R14, R15
R16
R17
R18
C1, C3
C2, C5, C8, C17, C19
C4
C6
C7
C9
C10
C11, C12, C14
C13, C22, C23, C24
C16
1
L1
1
1
Document Number: 73282
17-Mar-06
IHLP-5050FD-ER3R3 or
SSC-12808-3R1
IHLP-5050FD-ER2R2 or
SSC-12808-2R2
IHLP-5050FD-ER1R5 or
SSC-12808-1R5
SiDB766707 Ver 2 0 B Inductor 3 3 µH
SiDB766707 Ver 2 0 C Inductor 2 2 µH
SiDB766707 Ver 2 0 D Inductor 1 5 µH
Vishay
OSCON
Vishay
Vishay
www.vishay.com
5
www.vishay.com
6
C4
2.2 µF
1
1
NC
NC
NC
NC
NC
PGND
48
V IN
PGND
V IN
V IN
PGND
47
46
V IN
PGND
V IN
V IN
PGND
PGND
PGND
PGND
PGND
PGND
CBOOT
NC
PGND
PGND
CBOOT
PGND
VDD
PGND
NC
PGND
PGND
40
39
49
43
1
1
1
44
1
2
2
1
51
50
2
2
4.99 kΩ_1 %
R17
C13
10 µF
1
R18
C16
1
2
FB
7.68 kΩ_1 % 2.2 nF
1
GND
J2
(12 V)
VIN
J3
C15
at
R16
3.32 kΩ_1 %
2
FB
(See Page 7)
2
2
@ Reserved location
J8
GND
C26
at
1
C25
at
2
2
C24
10µF
1
C11
C12
C14
C22
C23
220 µF 220 µF 220 µF 10 µF 10 µF
2
+
1
J7
GND
1
1
D2
at
1
2
2
+
1
+
2
+
1
R12
at
1
JP3
SHUT
2
JP4
SHUT
V1
2
1
+
D1
at
1
L1
2.2 F
J1
DCIN
C20
at
2
J10
VOUT
52
53
54
55
56
1
VOUT
SW
SW
SW
SW
SW
57
58
R1
0Ω
2
J9
VOUT
V IN
34
32
33
31
SW
59
61
60
62
63
64
65
2
30
NC
SW
SW
SW
NC
VIN
VIN
VIN
VIN
66
67
1
29
SYNC
NC
CGND
SHDNB
V IN
SHDN 28
PGND
SiC714CD10
V IN
PGND
NC
CGND
PWM
NC
VDD
VIN
VIN
C3
C17
C1
C18
10 µF
0.1 µF 10 µF
at
_1812_25 V _1812_25 V
2
DCIN
(See Page 7)
C19
0.1 µF
1
25
JP2
SYNC LX
26
2 SYNC 27
24
23
21
22
NC
2
CLK
VDD
17
NC
9
10
11
12
13
14
15
16
VDD
1
2
3
4
5
6
7
8
20
C2
0.1 µF
1
68
1
VIN
1
+
1
19
NC
M2
VIN
JP1
1
MC78L05 AC S
8
7
6
5
U3
VIN VOUT 1
GND GND 2
GND GND 3
NC 4
NC
18
CBOOT
DCIN
SiDB766707
Vishay Siliconix
FIGURE 11. EVALUATION BOARD SCHEMATIC - PART 1 OF 2
2
2
2
2
45
2
42
2
41
38
36
37
35
3
2
2
Document Number: 73282
17-Mar-06
J4
+5V
Document Number: 73282
17-Mar-06
1
2
2
1
1
1
2
Q2
2N7002
VCC
1
12
SCP
COMP
DTC
2
VCC
RT
OUT
GND
DTC
2
R5
7.68 kΩ
FB1
C7
220 pF
COMP 1
FB
RT
2
C5
0.1 µF
C6
6.8 nF
1
U2
TL5001
4
5
1
16
2
3
1
C9
R13
4.7 nF 750 kΩ
C10
2.2 nF
2
2
J6
SHDN
R4
2 kΩ
R6
10 kΩ
Q3
Si1032X
SHDN 2
1
R7
10 k
2
2
1
3
VDD
R10
10 Ω
2
R9
10 kΩ
C8
0.15 µF
1
OUT
J5
CLK
R2
10 kΩ
CLK
VDD
2
R11
47 kΩ
1
6
5
1
3
Q1
TP0610T
NO
COM
NC 4
DG2012DL
U1
1
R3
2 kΩ
GND
VDD 2 V+
1
IN
3
OUT
7
1 VDD 3
JP5
–
+
DCIN
(See Page 6)
4
C21
at
6
5
U4B
at
1
VCC
R19
at
2
R20
at
1
1
2
VDD
R8
10 kΩ
at Reserved location
FB
FB
(See Page 6)
SiDB766707
Vishay Siliconix
FIGURE 11. EVALUATION BOARD SCHEMATIC - PART 2 OF 2
2
1
1
2
82
3
1
2
1
2
17
R14
22.6 kΩ_1 %
8
R15
22.6 kΩ_1 %
2
2
2
2
1
2
www.vishay.com
7
SiDB766707
Vishay Siliconix
EVALUATION BOARD DISCLAIMER
Vishay Siliconix (Vishay) provides this evaluation board (EVB) under the following conditions:
The EVB is intended for DEMONSTRATION OR ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES
ONLY and is not considered to be fit for commercial use. Vishay assumes no liability for application assistance, customer product design, infringement of patents, or software performance.
Please read the EVB datasheet carefully; it contains important information for its use. The user assumes all responsibility and liability for safe and proper handling of the EVB and to take any and all appropriate precautions concerning electrostatic discharge. Further, the user indemnifies Vishay from all claims arising from handling or use. The
EVB is not regulatory–compliant or agency–certified. Any user handling the product must have electronics training
and observe good laboratory practice standards.
THE EVB IS PROVIDED AS IS, WHERE IS, WITH NO WARRANTIES WHATSOEVER, EITHER EXPRESSED,
IMPLIED, OR STATUTORY, AND SPECIFICALLY EXCLUDING THE WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR ANY PARTICULAR PURPOSE.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO
THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The EVB is not provided exclusively to the user and Vishay may supply the EVB to other users. No license is granted
under any patent right or any other intellectual property right of Vishay.
www.vishay.com
8
Document Number: 73282
17-Mar-06