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Application Note
BD93F10MWV Function Description
© 2021 ROHM Co., Ltd.
No. 64AN078E Rev.002
Nov.2021
●VMAX / VMIN / PMIN Function (GPIO3 / GPIO6 / GPIO7)
VMAX / VMIN / PMIN sets the required maximum voltage /
required minimum voltage / required minimum power
respectively by external resistors (pull-up resistor RVU1 /
RVU2 / RPU and pull-down resistor RVD1 / RVD2 / RPD).
These three terminals shall be pulled up to ADCVREF and
pulled down to GND via these six resistors according to table
Table 7. VMAX / VMIN / PMIN setting table. The tolerance of
the resistance of RVU1, RVU2, RPU, RVD1, RVD2, RPD shall
be within ± 1%. Therefore, please select the resistance value
within the tolerance of the range.
Depending on the noise situation on the actual application,
the configuration by these terminals may not be detected
correctly due to the noise flow-round.
In this case, it is recommended that the bypass capacitor be
implemented to suppress the noise and stabilize the
configuration's detection.
The pin voltage is stored as the configuration at the initial
startup then it has been maintained until the power supply of
this product being lost. XRST (pin 40) can also reset the
configuration for the debugging but XRST shall not be utilized
on the actual application.
VMAX(GPIO3)
VMIN(GPIO6)
PMIN(GPIO7)
28
27
24
ADCVREF
RVU1
RVU2
RPU
RVD1
RVD2
RPD
Figure 10. VMAX / VMIN / PMIN terminal setting
Table 7. VMAX / VMIN / PMIN setting table
Set
RVD1
RVD2
RPD
[kΩ]
RVU1
RVU2
RPU
[kΩ]
VMAX
[V]
VMIN
[V]
PMIN
[W]
1
200
Open
5
5
0.5
2
36
160
9
9
7.5
3
68
150
12
12
15
4
82
110
15
15
27
5
110
82
16
16
36
6
150
68
18
18
45
7
160
36
19
19
60
8
open
200
20
20
80
This product requests and negotiates a PDO that does not
exceed the maximum current from the required voltage /
power range. The device can connect a source that has the
range coming into contact with or overlapping the
“Connectable power range” in Figure 11.
9
VMIN
VMAX
PMIN
Connectable
Power Range
(Nch-MOS is
turned on)
Configurable range by VMIN / VMAX / PMIN
Voltage[V]
C
u
rr
e
n
t[
A
]
Figure 11. The connectable range by VMIN / VMAX / PMIN
●The Example of VMIN / VMAX / PMIN configuration
VMAX=15V(Set4), VMIN=9V(Set2), PMIN=15W(Set3)
Sink devices with the setting above have a minimum required
power of 15W and contract at 9V to 15V.
VMAX(GPIO3)
VMIN(GPIO6)
PMIN(GPIO7)
28
27
24
ADCVREF
110k
Ω
160k
Ω
150k
Ω
82k
Ω
36k
Ω
68
ｋΩ
Set4
Set2
Set3
Figure 12. Example of VMIN / VMAX / PMIN configuration
In this configuration, if the connected Source device supports
power of minimum 15W at 9V, a USB PD contract will be
established.
9
PMIN
Contacted PDO
Source
Supports
15W
5V@3A, 9V
@1.67A
Voltage[V]
C
u
rr
e
n
t[
A
]
VMIN
VMAX
Source support the power range
Connectable
Power Range
(Nch-MOS is
turned on)
Figure 13. Example of the contract with a 15W source device
.
