Texas Instruments 12V Input, 1.5V Output, 10A Sync Buck Converter Evaluation Module TPS40190EVM-001 TPS40190EVM-001 데이터 시트
제품 코드
TPS40190EVM-001
TEST SET UP
3.4 EQUIPMENT
3.4.1 VOLTAGE SOURCE
V
12V_IN
The input voltage source (V
12V_IN
) should be a 0-15V variable DC source capable of 5Adc. Connect V
12V_IN
to J1
as shown in Figure 3.
3.4.2 METERS
A1: 0-5Adc, ammeter
V1: V
V1: V
12V_IN
, 0-15V voltmeter
V2: V
1V5_OUT
0-5V voltmeter
3.4.3 LOADS
LOAD1
The Output Load (LOAD1) should be an Electronic Constant Current Mode Load capable of 0-15Adc @ 1.5V
The Output Load (LOAD1) should be an Electronic Constant Current Mode Load capable of 0-15Adc @ 1.5V
3.4.4 OSCILLOSCOPE
OSCILLOSCOPE
A Digital or Analog Oscilloscope can be used to measure the ripple voltage on V
A Digital or Analog Oscilloscope can be used to measure the ripple voltage on V
OUT
. The Oscilloscope should be
set for 1M
Ω impedance, 20MHz Bandwidth, AC coupling, 1μs/division horizontal resolution, 20mV/division vertical
resolution for taking output ripple measurements. TP 9 and TP 10 can be used to measure the output ripple
voltage by placing the oscilloscope probe tip through TP 9 and holding the ground barrel to TP 10 as shown in
Figure 3. For a hands free approach, the loop in TP 10 can be cut and opened to cradle the probe barrel. Using
a leaded ground connection may induce additional noise due to the large ground loop area.
voltage by placing the oscilloscope probe tip through TP 9 and holding the ground barrel to TP 10 as shown in
Figure 3. For a hands free approach, the loop in TP 10 can be cut and opened to cradle the probe barrel. Using
a leaded ground connection may induce additional noise due to the large ground loop area.
3.4.5 Recommended Wire Gauge
V
12V_IN
to J1
The connection between the source voltage, V
12V_IN
and J1 of the TPS40190EVM-001 can carry as much as 3
Adc. The minimum recommended wire size is AWG #16 with the total length of wire less than 4 feet (2 feet input,
2 feet return).
J2 to LOAD1 (Power)
The power connection between J2 of TPS40190EVM-001 and LOAD1 can carry as much as 15Adc. The
minimum recommended wire size is 2x AWG #16, with the total length of wire less than 4 feet (2 feet output, 2
feet return).
2 feet return).
J2 to LOAD1 (Power)
The power connection between J2 of TPS40190EVM-001 and LOAD1 can carry as much as 15Adc. The
minimum recommended wire size is 2x AWG #16, with the total length of wire less than 4 feet (2 feet output, 2
feet return).
3.4.6 OTHER
FAN
This evaluation module includes components that can get hot to the touch, because this EVM is not enclosed to
allow probing of circuit nodes, a small fan capable of 200-400 lfm is required to reduce component surface
temperatures to prevent user injury. The EVM should not be left unattended while powered. The EVM should not
be probed while the fan is not running.
This evaluation module includes components that can get hot to the touch, because this EVM is not enclosed to
allow probing of circuit nodes, a small fan capable of 200-400 lfm is required to reduce component surface
temperatures to prevent user injury. The EVM should not be left unattended while powered. The EVM should not
be probed while the fan is not running.
3.5 EQUIPMENT SETUP
Shown in Figure 3 is the basic test set up recommended to evaluate the TPS40190EVM-001. Please note that
although the return for J1 and J2 are the same, the connections should remain separate as shown in Figure 2.
although the return for J1 and J2 are the same, the connections should remain separate as shown in Figure 2.