Texas Instruments TPS53127 Dual Synchronous Step-Down Controller Evaluation Module TPS53127EVM-614 TPS53127EVM-614 Datenbogen
Produktcode
TPS53127EVM-614
www.ti.com
Test Setup
5.1.3
Loads
LOAD1: The Output Load shall be an Electronic Load set for Constant Current Mode capable of 0-4Adc at
1.05Vdc
1.05Vdc
LOAD2: The Output Load shall be an Electronic Load set for Constant Current Mode capable of 0-4Adc at
1.80Vdc
1.80Vdc
5.1.4
Oscilloscope
Oscilloscope
The Oscilloscope shall be an Analog or Digital Oscilloscope set for AC coupled measurement with 20MHz
bandwidth Limiting. Use 20mV / division vertical resolution, 1.0µs / division horizontal resolution for Output
Ripple Voltage Test. Set Cursors at +20mV and –20mV
The Oscilloscope shall be an Analog or Digital Oscilloscope set for AC coupled measurement with 20MHz
bandwidth Limiting. Use 20mV / division vertical resolution, 1.0µs / division horizontal resolution for Output
Ripple Voltage Test. Set Cursors at +20mV and –20mV
Probe
One Oscilloscope probes shall be Tektronix P6138 or equivalent oscilloscope probe with exposed
conductive ground barrels.
One Oscilloscope probes shall be Tektronix P6138 or equivalent oscilloscope probe with exposed
conductive ground barrels.
5.1.5
Recommended Wire Gauge
V
IN
to J3 – The connection between the source voltage, VVIN and J1 of TPS53127EVM-614 can carry as
much as 2.0Adc. The minimum recommended wire size is AWG #16 with the total length of wire less than
2 feet (1 foot input, 1 foot return).
2 feet (1 foot input, 1 foot return).
J1 to LOAD1 and J2 to LOAD2 – The connection between J1 and LOAD1 and J2 and LOAD2 of
TPS53127EVM-614 can carry as much as 4Adc each. The minimum recommended wire size is AWG #14,
with the total length of wire less than 2 feet (1 foot input, 1 foot return)
TPS53127EVM-614 can carry as much as 4Adc each. The minimum recommended wire size is AWG #14,
with the total length of wire less than 2 feet (1 foot input, 1 foot return)
5.1.6
Other
FAN – The TPS53127EVM-614 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 temperatures when operating
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 temperatures when operating
5.2
Equipment Setup
Shown in
is the basic test set up recommended to evaluate the TPS53127EVM-614. Note that
although the return for J3 and J1 and JP2 are the same system ground, the connections should remain
separate as shown in
separate as shown in
5.2.1
Procedure
1. Working at an ESD workstation, make sure that any wrist straps, bootstraps or mats are connected
referencing the user to earth ground before power is applied to the EVM. Electrostatic smock and
safety glasses should also be worn.
safety glasses should also be worn.
2. Prior to connecting the DC input source, V
IN
, it is advisable to limit the source current from V
IN
to 3.0A
maximum. Make sure V
IN
is initially set to 0V and connected as shown in
3. Verify SW1 and SW2 are in the desired position.
4. Place a fan as shown in
4. Place a fan as shown in
and turn on, making sure that air is flowing across the EVM.
7
SLVU434 – February 2011
TPS53127EVM-614
© 2011, Texas Instruments Incorporated