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TO-247-4L Half-Bridge Evaluation Board
User’s Guide
©
2019 ROHM Co., Ltd.
No. 61UG047E Rev.001
August.2019
10
．
DUT Selection
Although this evaluation board is designed based on TO-247-4L package as the DUT, TO-247N(3L) package can also be mounted
as the DUT with evaluation environment under the same conditions.
Shared drive circuit (HS) is shown in Figure 18. Q51 is for TO-247-4L and Q52 is for TO-247N. Each pin is connected, but the
Q52 Gate circuit return line (return loop to GND2) is separated by R77 resistor (R177 for LS) to avoid the merging of Power Source
pin and return line when 4L DUT is mounted. R77 (R177) are not mounted on this board as default, mount these resistors to perform
the evaluation on 3L DUT.
The mounting location and lead forming image are shown in Figure 19. Drain pin and Source (Power Source) pin are the same
connection for both packages.
Figure 18.
DUT Circuit
Figure 19.
4L and 3L Mounting and Lead Forming
HS
LS
4L
GND1
NC
INB
FILTERS
VCC1
FLT
INA
ENA
TEST
GND1
VEE2
OUT2
OUT1
VTSIN
VCC2
VREG
GND2
SCPIN
PROUT
VEE2
BM6101FV
47k Ω
0.1uF
0.1uF
U2
Q51
C59
R55
R70
R72
100 Ω
R54
C58
D51
R74
D52
Q53
R71
R73
R75
0 Ω
R78
VEE2
Vcc2
C67
R56
Q52
R77
0 Ω
D56
D55
3.3 Ω
3.3 Ω
(1)
(2)
(3)
(2)
(1), (3)
(1)
(2) (3)
(4)
3L
