Texas Instruments bq24650, User Manual, Page: 6 / 19

BQ24650 EVM
HPA639
VIN
J1
PGND
VSYS
J2
PGND
VOUT
APPLICATION CIRCUIT
TP2
SW
U1
V
Iin
I
Power supply
#1
Iout
V
Isys
V
I
Load #1
Load #2
I
LEDPWR
TS
/STAT1 /STAT2
JP3
TEST POINTS
D4 D5
JP2 JP4
CE
TERM_EN
SATATUS
SETTINGS
JP1
TS
External
Internal
EN
DIS
Test Summary
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2.5.2 Loads
LOAD#1 A 30-V (or greater), 5-A (or greater) electronic load that can operate at constant current and
constant voltage mode.
LOAD#2: An HP 6060B 3-V to 60-V/0A to 60-A, 300-W system dc electronic load or equivalent.
2.5.3 Meters
Seven Fluke 75 multimeters (equivalent or better) or four equivalent voltage meters and three equivalent
current meters.
The current meters must be capable of measuring 5-A+ current.
2.6 Equipment Setup
1. Set the power supply #1 (PS#1) for 21-V ±500-mVdc, 2.5-A ±0.1-A current limit, and then turn off
supply.
2. Connect the output of PS#1 in series with a current meter (multimeter) to J1 (VIN, PGND).
3. Connect a voltage meter across J1 (VIN, PGND).
4. Connect Load#1 in series with a current meter to J2 (VOUT, PGND). Turn off Load#1.
5. Connect Load#2 in series with a current meter to J2 (VSYS, PGND). Turn off Load#2.
6. Connect a voltage meter across J2 (VOUT, PGND).
7. Connect a voltage meter across J2 (VSYS, PGND).
8. Check all jumper shunts. JP1: connect 1-2 (External TS); JP2: ON; JP3: connect 2-3 (Enable
TERM_EN); JP4: OFF.
Figure 1. Original Test Setup for HPA639 A Evaluation Board
6 bq24650EVM Synchronous, Switch-Mode, Battery Charge Controller for Solar SLUU444A – August 2010 – Revised October 2010
Power
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