Texas Instruments TPS2553Q1EVM, Руководство пользователя

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Setup and Operation
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10 SLVUAT7 – October 2016
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TPS2553Q1EVM (HVL125A) Precision Current Limiting Switch User Guide
Table 4. Current Limiting Jumpers
POWER REQUIREMENT JUMPER I
OSmin
(mA) R
ILIM
(k Ω )
1 Low-Power USB device Remove all jumpers 100 229.08
1 High-Power USB device J5 500 47.08
2 High-Power USB devices J4 1000 23.88
3 High-Power USB devices J3 1500 16.2
Table 5 includes abridged EVM electrical characteristics. For a full functional description of the TPS 2553-
Q1 device, refer to the TPS2553-Q1 datasheet.
Table 5. EVM Electrical Characteristics
PARAMETER CONDITION MIN TYP MAX UNIT
Input Voltage, V
IN
TP2 2.5 6.5 V
Output Current, I
OUT
TP5 1.7 A
Continuous FAULT Sink Current J1 AND J2, or J6 10 mA
3.3 EVM Setup
The EVM setup section details what test equipment the user needs to use the EVM and how to properly
setup the EVM environment.
3.3.1 Recommended Test Equipment
The following is the recommended test equipment:
• Two-channel storage oscilloscope
• Current probe
• Voltage probe
• Adjustable DC-power supply with at least 2.5-V to 6.5-V output and a 10-A current limit
• Digital Multimeter or Volt-Ohm meter
• Passive or active load capable of handling up to 3 A
3.4 Basic Operation
3.4.1 Measuring Turnon and Turnoff Delays and Rise and Fall Times
Users should read the TPS2553-Q1 Datasheet before using the EVM. Figure 10 shows the recommended
test setup for measuring the delay and rise and fall times. In Figure 10 , the jumpers shown on the EVM
diagram are the ones that must be connected to ensure correct operation. Test points for voltage probing
are also highlighted in the figure. It is recommended to use at least a 5-W power resistor in this setup,
because of the high current output.