The TLVM23625EVM enables the evaluation of the TLVM23625 power module. The EVM allows for several configurations of the power module. Additionally, electrical test points provide ease in verifying the performance of the power regulator. Lastly, this EVM serves as a basis for optimal TLVM23625 layout and component selection.
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Read the user's guide before use. |
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Hot surface! Contact can cause burns. Do not touch! |
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The output voltage of the TLVM23625EVM can be configured from 1.8 V to 6 V with a load current up to 2.5 A.
Measurement points are provided to easily measure conversion efficiency and look at other performance metrics. In addition, jumpers and test points are provided to evaluate the features of the TLVM23625, such as programmable enable UVLO, adjustable switching frequency, and power-good flag.
The EVM layout allows the TLVM23625 and its orderable part numbers to be installed, and their specific features to be evaluated. The TLVM23625EVM comes installed with the TLVM23625RDNR, the adjustable switching frequency (RT pin) version of the TLVM23625.
The TLVM23625EVM is configured by default to be enabled with an output voltage of 5 V, and a switching frequency of 2.2 MHz with frequency foldback (auto mode) at light load. The following sections outline the step-by-step procedure to use the TLVM23625 and the performance that is exhibited.
EVM | Buck Regulator | Buck Features |
---|---|---|
TLVM23625EVM | TLVM23625RDNR | Output: ADJ (1-6 V) Fsw: ADJ Mode: Auto |
The following procedure outlines the steps to be taken for using the TLVM23625EVM. Use this section in conjuction with Test Setup to correctly setup the EVM.
VOUT (V) | Suggested Frequency |
---|---|
1.8 | 300 kHz |
2.5 | 800 kHz |
3.3 | 800 kHz |
5 | 1 MHz (J4: 3 – 4) *2.2 MHz can improve transient response for given output capacitance. |
Reference Designator | Description |
---|---|
J1 | Input to series, PI filter for EMC compliance testing. Note polarity, which is annotated in the silkscreen. Connect to a terminal block with a short, thick gauge (18AWG) wire. |
TP1, TP2 | VIN test points that bypass the EMC filter and connect directly to input capacitors. Enables more accurate efficiency measurements as well as potential parasitic minimization and signal integrity of AC measurements. Connect to test points with a short, thick gauge (18AWG) wire. |
TP4 | PGOOD test point for verifying PGOOD (output) flag feature |
TP3, TP6 | VOUT test points connected directly to output capacitors. Enables more accurate efficiency measurements, as well, potential parasitic minimization and signal integrity of AC measurements. Connect to test points with a short, thick gauge (18AWG) wire. |
J2 | Output (VOUT) terminal block. Connect to terminal block with a short, thick gauge (18AWG) wire. |
TP11, TP12 | EN test point for accurately measuring EN voltage. If EN voltage is to be applied (externally), resistor R2 and R4 potentially can need to be removed. |
J5 | Disable the regulator by shorting the pins of the jumper. |
J4 | TLVM23625EVM: Jumper for configuring the switching frequency of the converter. Using the "key" annotated in the schematic and also in the silkscreen. Placing the jumper on the adjacent pins sets the annotated switching frequency. |
TP7, TP8 | Test points for applying an external signal source to synchronize the regulator to. |
J3 | Jumper for configuring the output voltage. Set the voltage by using the "key" annotated in the schematic and also in the silkscreen, and by placing the jumper on the pins next to the annotated output voltage. |
TP9, TP10 | Test points for applying an AC signal source (across an injection resistor) often used in evaluating the loop response in a current mode regulator, such as the TLVM23625. |