MEZS7-1SSAPOWERBANK – MP2632
SOLUTION MODULE
MEZS7-1SSAPowerBank Rev. 1.0
www.MonolithicPower.com
5
6/23/2020
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Table 2: Input Current Limit Setting
DP1/DM 1 Detection
I
IN_LMT
Floating
500mA
SDP
500mA
CDP or DCP
Set through R
ILIM
b. The charge current is limited by the input voltage regulation.
Once the input voltage approaches the input voltage regulation threshold (internally preset at
4.65V), the charge current is reduced to allow priority of the system power and maintain proper
regulation of the input voltage. This occurs when the input power source does not have enough
capability or the voltage loss on the USB cable is too large.
4. If certain operation states cannot be tested, an external wire can be added to connect a power
source. Short DP1 and DM1 to set the DP1/DM1 detection as SDP; the input current limit is 500mA.
5. Connect USB1 to the e-load or real smartphone. Most charge mode functions can be tested once
these connections are made.
a. Input current limit
When the DC power supply has a greater current capability than the input current limit, increase
the load current of the e-load. When the input current reaches this limit, the charge current
decreases to keep the input current constant at the limit value.
b. Input voltage regulation
When the DC power supply has a smaller current capability than the input current limit, increase
the load current of the e-load. The input power source may be insufficient to support both the
charge current and system load current; this will cause the input voltage to drop. Once the
voltage drops to V
IN_REG
, the charge current reduces to allow priority of the system power and
keep the input voltage from dropping further.
Single-Cell Battery
Pack or Simulator
E-Load or
Smartphone
SW1
EV2632-R-00B
-
+
U1
LED1
LED2
LED3
LED4
LEDTC
MPS
USB1
USB2
Adapter, USB POrt, or
DC Power Supply
Figure 2: Set-Up for Charge Mode with System Load
MEZS7-1SSAPowerBank