Texas Instruments Evaluation Module for TPS53128 Dual Synchronous Step-Down Controller TPS53128EVM-620 TPS53128EVM-620 데이터 시트
제품 코드
TPS53128EVM-620
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Test Setup
5
Test Setup
5.1
Equipment
5.1.1
Voltage Source
The input voltage source (V
IN
) shall be a 0-V to 25-V variable dc source capable of supplying 3.0 Adc
minimum.
5.1.2
Meters
A1: 0-Adc to 5-Adc, ammeter
V1: V
IN
, 0-V to 25-V voltmeter
V2: V
OUT1
, 0-V to 2-V voltmeter
V3: V
OUT2
, 0-V to 2-V voltmeter
5.1.3
Loads
LOAD1: One output load is an electronic load set for constant current mode capable of 0 Adc to 4 Adc at
1.05 Vdc.
1.05 Vdc.
LOAD2: The other output load is an electronic load set for constant current mode capable of 0 Adc to 4
Adc at 1.8 Vdc.
Adc at 1.8 Vdc.
5.1.4
Oscilloscope and Probe
The oscilloscope, analog or digital, must be set for ac-coupled measurement with 20-MHz bandwidth
limiting. Use 20 mV / division vertical resolution, 1.0 µs / division horizontal resolution for output ripple
voltage test.
limiting. Use 20 mV / division vertical resolution, 1.0 µs / division horizontal resolution for output ripple
voltage test.
Oscilloscope probes with exposed conductive ground barrels are recommended.
5.1.5
Recommended Wire Gauge
V
IN
to J3 – The connection between the source voltage VIN and J1 of TPS53128EVM-620 can carry as
much as 2 Adc. The minimum recommended wire size is AWG #16 with the total length of wire less than 2
feet (1 foot input, 1 foot return).
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
TPS53128EVM-620 can carry as much as 4 Adc 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).
TPS53128EVM-620 can carry as much as 4 Adc 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 Test Equipment
FAN – The TPS53128EVM-620 Evaluation Module includes components that can get hot to touch.
Because this EVM is not enclosed to allow probing of circuit nodes, a small fan capable of 200-400 lfm is
recommended 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
recommended to reduce component temperatures when operating.
5.2
Recommended Setup
shows the recommended test setup to evaluate the TPS53128EVM-620. 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 also are
recommended.
earth ground before power is applied to the EVM. Electrostatic smock and safety glasses also are
recommended.
7
SLVU433 – February 2011
TPS53128EVM-620
© 2011, Texas Instruments Incorporated