SLVSHC9 January 2024 TPS56A37
PRODUCTION DATA
The TPS56A37 is an 10A synchronous buck converter operating from 4.5V to 28V input voltage (Vin). The device output voltage ranges from 0.6V to 13V (Vout) and supports 10A continuous output current with fixed 500kHz switching frequency. The proprietary D-CAP3 control mode enables low external component count, ease of design, optimization of the power design for power, size and efficiency. The device employs D-CAP3 control mode that provides fast transient response with no external compensation components and an accurate feedback voltage. The control topology provides seamless transition between CCM operating mode at higher load condition and DCM operation at lighter load condition. Eco-mode allows the TPS56A37 to maintain high efficiency at light load. The TPS56A37 is able to adapt both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.
The EN pin has an internal pullup current that can be used to adjust the input voltage undervoltage lockout (UVLO) with two external resistors. In addition, the EN pin can be floating for the device to operate with the internal pullup current. Soft-start time can be set by connecting a capacitor to the SS pin. Leaving the SS pin floating is set to default 1.8ms soft-start time. The TPS56A37 has the PG pin to indicate output status and has a built-in discharge function by using an integrated MOSFET with 200Ω RDS(on). The device is protected from output short, undervoltage, overvoltage, and overtemperature conditions.