MEZS7-1SSAPOWERBANK – MP2632
SOLUTION MODULE
MEZS7-1SSAPowerBank Rev. 1.0
www.MonolithicPower.com
6
6/23/2020
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© 2020 MPS. All Rights Reserved.
Boost Function
1. Connect the e-load or real smartphone to SYS USB1 on the solution module.
2.
Attach the positive and negative ends of the battery to the “+” and “-” terminals, respectively. If
using a battery simulator, preset the voltage to 3.8V (typical value) first.
3. Ensure the battery protection chip is enabled. If the chip in sleep mode, the following steps are
required:
a. Connect USB2 with a 5V input source so the IC works in charge mode to enable the battery
protection chip.
b. Remove V
IN
from USB2.
4. Short push SW1 from high to low for more than 1.5ms; the boost should start to work. Verify the
system output current is limited at 3A.
5. Long push SW1 from high to low for more than 2.5s; the boost operation should shut down.
6. Double-click SW1 to turn LEDTC on or off.
7. Once the voltage between the
“+” and “-” terminals drops below the over-discharge voltage, the
battery protection chip operates in sleep mode. Boost operation cannot be enabled until the battery
pack charge exceeds the over-discharge voltage. If a battery simulator is used for the test, only
ramping up the battery simulator voltage will not enable the battery protection chip from sleep mode.
Step 3 is still required.
Single-Cell Battery
Pack or Simulator
E-Load or
Smartphone
SW1
EV2632-R-00B
-
+
U1
LED1
LED2
LED3
LED4
LEDTC
MPS
USB1
USB2
Figure 3: Set-Up for Boost Mode
8. Remove the load from USB1; the boost operation will terminate after 16s.
9. Connect a smartphone to USB1 when the MP2632 is in sleep mode; this enables boost operation.
MEZS7-1SSAPowerBank