The Texas Instruments TPSM365R6EVM evaluation module helps designers evaluate the operation and performance of the TPSM365R6 wide-input voltage buck modules. The TPSM365R6 is an easy-to-use synchronous step-down DC/DC module capable of driving up to 0.6 A of load current from an input voltage of up to 65 V. The TPSM365R6EVM features a wide array of selectable output voltages from 1.8 V to 12 V and a selectable switching frequencies of 400 kHz to 2.2 MHz. This feature allows engineers to exercise the full capabilities of the TPSM365R6 in pulse frequency modulation (PFM) mode. See the TPSM365R6, 3-V to 65-V Input, 600-mA, 4-μA No-Load IQ Synchronous Buck Converter Power Module in a HotRod™ QFN Package data sheet for additional features, detailed descriptions, and available options.
EVM | U1 | FREQUENCY | SPREAD SPECTRUM | CURRENT | PIN 11 TRIM |
---|---|---|---|---|---|
TPSM365R6EVM | TPSM365R6RDNR | 200 kHz – 2.2 MHz | Disabled | 0.6 A | RT with PFM |
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Figure 1-1 shows a typical setup with the EVM. The VIN power terminal block (J1) is used for connection to the host input supply and the VOUT power terminal block (J4) is used for connection to the load.
The test points on the top of the board can be used for connecting to the input and output of the EVM. Table 1-1 describes each test point.
Test Point(1) | Description |
---|---|
VINS+ | Sense line for measuring the input voltage. Not meant to be used to power the device. |
VINS- | Ground test point located near the ground terminal of the high frequency bypass capacitor. Meant to be connected to the ground sense line for VIN, but can be used in place of a general ground test point. |
VOUTS+ | Sense line test point for the output voltage. Do not connect to an output load. |
VOUTS- | Ground test point located near the ground terminal of the output capacitors. Meant to be connected to the ground sense line for VOUT, but can be used in place of a general ground test point. |
GND | Test points for ground connection. Not meant to be used as a ground connection for the input power supply. |
EN | Input voltage scope monitor. Connect an oscilloscope probe to this set of points to measure input ripple voltage. |
PGOOD | This test point is connected to the PGOOD pin from the IC. This test point is an open-drain output of the PGOOD pin. In this EVM configuration, the pin is pulled up to VOUT by R4. |
EN | This test point is connected to the EN pin. By default, there is a pullup resistor R2 (RENT) to VIN to enable the IC. |
RT | This test point is connected to the RT pin of the IC when the R4 (RMODE) is installed. In a MODE/SYNC trim part, this test point is connected to the SYNC pin of the IC. This can be connected to an external clock to synchronize the IC. In a MODE/SYNC configuration, make sure J3 is left open. |
VCC | This test point is connected to the VCC pin. |