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The TPS54625 is a single, adaptive on-time, D-CAP2™-mode, synchronous buck converter requiring a very low external component count. The D-CAP2™ control circuit is optimized for low-ESR output capacitors such as POSCAP, SP-CAP, or ceramic types and features fast transient response with no external compensation. The switching frequency is internally set at a nominal 650 kHz. The high-side and low-side switching MOSFETs are incorporated inside the TPS54625 package along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs allows the TPS54625 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS54625 dc/dc synchronous converter is designed to provide up to a 6.5-A output from an input voltage source of 4.5 V to 18 V. The output voltage range is from 0.76 V to 5.5 V. Rated input voltage and output current ranges for the evaluation module are given in Table 1-1.
The TPS54625EVM-608 evaluation module is a single, synchronous buck converter providing 1.05 V at 6.5 A from 4.5-V to 18-V input. This user’s guide describes the TPS54625EVM-608 performance.
EVM | Input Voltage Range | Output Current Range |
---|---|---|
TPS54625EVM-538 | VIN = 4.5 V to 18 V | 0 A to 6.5 A |
A summary of the TPS54625EVM-608 performance specifications is provided in Table 2-1. Specifications are given for an input voltage of VIN = 12 V and an output voltage of 1.05 V, unless otherwise noted. The ambient temperature is 25°C for all measurement, unless otherwise noted.
Specifications | Test Conditions | Min | Typ | Max | Unit | |
---|---|---|---|---|---|---|
Input voltage range (VIN) | 4.5 | 12 | 18 | V | ||
CH1 | Output voltage | 1.05 | V | |||
Operating frequency | VIN = 9 V, IO = 1 A | 650 | kHz | |||
Output current range | 0 | 6.5 | A | |||
Over current limit | VIN = 12 V, LO = 1.5 µH | 8.2 | A | |||
Output ripple voltage | VIN = 12 V, IO = 6.5 A | 7 | mVPP |