Texas Instruments Evaluation Module for UCC24610 UCC24610EVM-563 UCC24610EVM-563 데이터 시트
제품 코드
UCC24610EVM-563
www.ti.com
EVM Test Set Up
5
EVM Test Set Up
shows the equipment set up when measuring the input power consumption during no load.
Notice the addition of the 10-
Ω
shunt resistor in
.
During the no-load test, the power analyzer should be set for long averaging in order to include several
cycles of operation and an appropriate current scale factor for using the external shunt must be used.
cycles of operation and an appropriate current scale factor for using the external shunt must be used.
shows the basic test set up recommended to evaluate the UCC24610EVM-563 with a load.
WARNING
High voltages that may cause injury exist on this evaluation
module (EVM). Please ensure all safety procedures are followed
when working on this EVM. Never leave a powered EVM
unattended.
module (EVM). Please ensure all safety procedures are followed
when working on this EVM. Never leave a powered EVM
unattended.
5.1
Test Equipment
See
and
for recommended test set ups.
•
AC Input Source: The input source shall be an isolated variable AC source capable of supplying
between 85 V
between 85 V
RMS
and 265 V
RMS
at no less than 30 W and connected as shown in
and
. For accurate efficiency calculations, a power meter should be inserted between the neutral
line of the AC source and the Neutral terminal of the EVM. For highest accuracy, connect the voltage
terminals of the power meter directly across the Line and Neutral terminals of the EVM.
terminals of the power meter directly across the Line and Neutral terminals of the EVM.
•
Load: For the output load, a programmable electronic load set to constant current mode and capable
of sinking 0 to 5 A
of sinking 0 to 5 A
DC
at 5 V
DC
shall be used. For highest accuracy, V
OUT
can be monitored by
connecting a DC voltmeter, DMM V1, directly across the V
OUT
+ and V
OUT
– terminals as shown in
. A DC current meter, DMM A1, should be placed in series with the electronic load for accurate
output current measurements.
•
Power Meter: The power analyzer shall be capable of measuring low input current, typically less than
50 mA, and a long averaging mode if low power standby mode input power measurements are to be
taken. An example of such an analyzer is the Voltech PM100 Single Phase Power Analyzer. To
measure the intermittent bursts of current and power drawn from the line during no-load operation, an
external 10-
50 mA, and a long averaging mode if low power standby mode input power measurements are to be
taken. An example of such an analyzer is the Voltech PM100 Single Phase Power Analyzer. To
measure the intermittent bursts of current and power drawn from the line during no-load operation, an
external 10-
Ω
shunt, with a current scale factor of 10A/V, was used at a high sample rate over an
extended period of time in order to display the averaged results (refer to
•
Multimeters: Two digital multimeters are used to measure the regulated output voltage (DMM V1) and
load current (DMM A1).
load current (DMM A1).
•
Oscilloscope: A digital or analog oscilloscope with a 500-MHz scope probe is recommended.
•
Fan: Forced air cooling is not required.
•
Recommended Wire Gauge: a minimum of AWG18 wire is recommended. The wire connections
between the AC source and the EVM, and the wire connections between the EVM and the load should
be less than two feet long.
between the AC source and the EVM, and the wire connections between the EVM and the load should
be less than two feet long.
7
SLUU434 – August 2010
5-V, 25-W Flyback Converter With Secondary-Side Synchronous Rectification
Copyright © 2010, Texas Instruments Incorporated