Test Setup
14
SLVUAO6 – June 2016
Copyright © 2016, Texas Instruments Incorporated
bq501210 bqTESLA™ Wireless Power TX EVM
6
Test Setup
6.1
Equipment
6.1.1
WPC v1.2 15-W Receiver
Use a WPC v1.2 15-W receiver for evaluation. When paired with the bq51025EVM-749, the system can
produce 10 W. If a low power Qi-compliant receiver such as bq51020EVM-520 or bq51013BEVM-764 is
used, then the maximum output power is 5 W. Note that the following test set-up only discusses the WPC
v1.2 15-W RX configuration.
6.1.2
Voltage Source
To deliver 15 W, the input voltage source must provide a regulated DC voltage of 15 V to 19 V and deliver
at least 2-A continuous load current; current limit must be set to 3 A.
CAUTION
To help assure safety integrity of the system and minimize risk of electrical
shock hazard, always use a power supply providing suitable isolation and
supplemental insulation (double insulated). Compliance to IEC 61010-1, Safety
Requirements
for
Electrical
Equipment
for
Measurement,
Control
and
Laboratory Use, Part 1, General Requirements, or its equivalent is strongly
suggested, including any required regional regulatory compliance certification
approvals. Always select a power source that is suitably rated for use with this
EVM as referenced in this user manual.
External Power Supply Requirements:
Nom Voltage:15.0–19.0 V
DC
Max Current: 2.0 A
Efficiency Level V
External Power Supply Regulatory Compliance Certifications: Recommend
selection and use of an external power supply which meets TI’s required
minimum electrical ratings in addition to complying with applicable regional
product regulatory/safety certification requirements such as (by example) UL,
CSA, VDE, CCC, PSE, and so forth.
The bq501210EVM-756 works with 5-V to 19-V input voltage. Levels between 15 V and 19 V will deliver
15 W, which is required for a WPC Extended Power Profile (EPP) transmitter.
5-V input supplies are aimed to negotiate to HVDCP voltages of 9 V or 12 V which enables Fast Charging
of capable receivers. The system may also deliver power as a normal 5-V transmitter, however, the power
level will be reduced and providing power to higher voltage receivers may not be successful. A typical 5-V
receiver has shown to produce 4.5 W consistently. Coupling and other factors will greatly influence the
results of each system.
6.1.3
Meters
Monitor the output voltage of the 15-W RX with a voltmeter. Monitor the input current into the load with an
appropriate ammeter. You can also monitor the transmitter input current and voltage, but the meter must
use the averaging function for reducing error, due to communications packets.
6.1.4
Loads
A single load is required at 7 V to 12 V (dependent on the RX used) with a maximum current of 2 A. The
load can be resistive or electronic.