Texas Instruments bq25505, Руководство пользователя

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+
-
Source
meter
configured
as current
source
SM1
SM1
Source (Sink)
meter
configured
as voltage
source
- +
+
-
SM2
SM2
- +
Power Supply set to
desired input voltage
regulation point
(that is, MPPT% × VOC)
R1
D1
C A
BAT+
GND
Test and Measurement Summary
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3.1 Test Setups and Results
3.1.1 Boost Charger Efficiency
The test setup is shown in Figure 2 . The specific equipment used for the test results in Figure 3 and
Figure 4 is listed below:
1. VIN_DC was connected to a Keithley 2420 source-meter configured as a current source with voltage
compliance (clamp) set to the open circuit voltage.
2. VSTOR was connected a Keithley 2420 source-meter configured as a voltage source set to the
VSTOR voltage. The current sunk by the source-meter was the output current of the charger.
3. VREF_SAMP was connected to a power supply configured to output the desired input voltage
regulation point (that is, the MPPT% times the HiZ source's VOC). No jumper is required on JP4.
Figure 2. Test Setup for Measuring Boost Charger Efficiency
8 User's Guide for bq25505 Battery Charger Evaluation Module for Energy SLUUAA8 – September 2013
Harvesting
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