The TPSM82821EVM-080, TPSM82822EVM-080, and TPSM82823EVM-080 are at revision B, the newer revision with better thermal performance, smaller solution size, and complies with CISPR 11 class B. The TPSM8282xEVM-080 and the TPSM8282xAEVM-127 facilitates the evaluation of the TPSM82821x, TPSM82822x, and TPSM82823x 1-A, 2-A, and 3-A pin-to-pin compatible step-down modules with DCS-Control in a 2-mm × 2.5-mm uSiL package. The TPSM82821A, TPSM82822A, and TPSM82823A modules are the forced PWM versions of the TPSM82821, TPSM82822, and TPSM82823 modules, respectively. The EVMs have a 1.8-V output voltage with 1% accuracy for input voltages from 2.4 V to 5.5 V with a maximum solution height of 1.1 mm. The TPSM82821x, TPSM82822x, and TPSM82823x are highly efficient and small solutions for point-of-load (POL) modules in applications, such as optical modules, embedded camera systems, and other space-limited applications.
The TPSM8282x and the TPSM8282xA are high efficiency synchronous, step-down converter power modules in a small 2-mm × 2.5-mm uSiL package. The device family consists of 1 A, 2 A, or 3 A output current modules and comes in both automatic power save mode and forced PWM mode versions.
Table 2-1 provides a summary of the TPSM8282xEVM-080 and the TPSM8282xAEVM-127 performance specifications.
SPECIFICATION | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
---|---|---|---|---|---|
Input voltage | 2.4 | 5 | 5.5 | V | |
Output voltage setpoint | 1.8 | V | |||
Output current | TPSM82821EVM-080 | 0 | 1 | A | |
TPSM82822EVM-080 | 0 | 2 | A | ||
TPSM82823EVM-080 | 0 | 3 | A | ||
TPSM82821AEVM-127 | 0 | 1 | A | ||
TPSM82822AEVM-127 | 0 | 2 | A | ||
TPSM82823AEVM-127 | 0 | 3 | A |
The printed-circuit board (PCB) for this EVM is designed to accommodate both the fixed and the adjustable output voltage versions of this device family. Additional input and output capacitors can also be added. The board layout, schematic, bill of materials, and the setup for both the TPSM8282xEVM-080 and the TPSM8282xAEVM-127 remains the same. Therefore, either of the EVMs can be used to evaluate any device variant from this family.
C5, shown in Figure 7-1, is provided for an additional input capacitor. This capacitor is not required for proper operation, but can be used to reduce the input voltage ripple.
C6 and C7 are provided for additional output capacitors. These capacitors are not required for proper operation but can be used to reduce the output voltage ripple and to improve the load transient response. The total output capacitance must remain within the recommended range in the data sheet for proper operation.
This section describes how to properly use the TPSM8282xEVM-080 Rev.B and the TPSM8282xAEVM-127 Rev.A.
To operate the EVM, set jumper JP1 between ON and EN to turn on the device as shown in Section 3.2. Connect the input supply to J1 and connect the load to J2.
J1, Pin 1 and 2 – VIN | Positive input connection from the input supply for the EVM. |
J1, Pin 3 and 4 – S+/S– | Input voltage sense connections. Measure the input voltage at this point. |
J1, Pin 5 and 6 – GND | Input return connection from the input supply for the EVM. |
J2, Pin 1 and 2 – VOUT | Output voltage connection |
J2, Pin 3 and 4 – S+/S– | Output voltage sense connections. Measure the output voltage at this point. |
J2, Pin 5 and 6 – GND | Output return connection |
J3 – PG/GND | The PG output appears on pin 1 of this header with ground on pin 2. |
JP1 – EN | EN pin input jumper. Place the supplied jumper across ON and EN to turn on the module. Place the jumper across OFF and EN to turn off the IC. |
Hot surface. Contact may cause burns. Do not touch. |