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Application Note
BD93F10MWV Function Description
© 2021 ROHM Co., Ltd.
No. 64AN078E Rev.002
Nov.2021
In addition, the product can establish a contract with the
maximum power supported by the Source device. Therefore,
when connected to a Source device that can supply 45W
(5V, 9V, 15V@max3A), a contract can establish at 15V@3A
and turns on Nch-MOS to power the system.
9
PMIN
Source supports
45W
5V,9V,15V@3A
Contracted PDO
Connectable
Power Range
(Nch-MOS is
turned on)
Voltage[V]
C
u
rr
e
n
t[
A
]
VMIN
VMAX
Figure 14. Example of contract with 45W configuration
example.
●Regarding the limitation by the cable and the threshold
of VBUS OCP.
On cable current limit and VBUS Over-Current Detection
(OCP), there is a cable current limit for USB PD standards.
Since normal cables can only allow up to 3A, a contract
would be established with the Source at 3A, even if the
Source can allow up to 5A.
9
VMIN
VMAX
PMIN
=60W
Contracted PDO
Source supports
100W
5V,9V,15V,20V
@5A
Limitation by
3A Cable
Connectable
Power Range
(Nch-MOS is
turned on)
Voltage[V]
C
u
rr
e
n
t[
A
]
Figure 15
.
Contract with 100W Source device via 3A cable
The threshold for VBUS overcurrent detection is set to 1.3
times the contracted current according to Figure 16.
9
Contracted PDO
Source
supports
100W
5V,9V,15V,
20V@5A
OCP
Thereshold
9
VMIN
VMAX
PMIN
1.3 times
Connectable
Power Range
(Nch-MOS is
turned on)
Voltage[V]
Cu
rr
e
n
t[
A
]
Limitation by 3A Cable
Figure 16. VBUS Overcurrent detection configuration example.
