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This user's guide contains background information for the TPS54335A as well as support documentation for the TPS54335AEVM-010 evaluation module (BSR010-001). Also included are the performance specifications, the schematic, and the bill of materials for the TPS54335AEVM-010.
The TPS54335A dc/dc converter is designed to provide up to a 3-A output from an input voltage source of 4.5 V to 28 V. Rated input voltage and output current range for the evaluation module are given in Table 1-1. This evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54335A regulator. The switching frequency is externally set at a nominal 340 kHz. The high-side and low-side MOSFETs are incorporated inside the TPS54335A package along with the gate-drive circuitry. The low drain-to-source on resistance of the MOSFETs allow the TPS54335A to achieve high efficiencies and helps keep the junction temperature low at high output currents. The compensation components are external to the integrated circuit (IC), and an external divider allows for an adjustable output voltage. Additionally, the TPS54335A provides an adjustable undervoltage lockout input. The absolute maximum input voltage is 30 V for the TPS54335AEVM-010.
EVM | INPUT VOLTAGE RANGE | OUTPUT CURRENT RANGE |
---|---|---|
TPS54335AEVM-010 | VIN = 8 V to 28 V | 0 A to 3 A |
A summary of the TPS54335AEVM-010 performance specifications is provided in Table 1-2. Specifications are given for an input voltage of VIN = 24 V and an output voltage of 5.0 V, unless otherwise specified. The TPS54335AEVM-010 is designed and tested for VIN = 8 V to 28 V. The ambient temperature is 25°C for all measurements, unless otherwise noted.
SPECIFICATION | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
VIN operating voltage range | 8 | 24 | 28 | V | |||
VIN start voltage | 7.12 | V | |||||
VIN stop voltage | 6.12 | V | |||||
Output voltage set point | 5 | V | |||||
Output current range | VIN = 8 V to 28 V | 0 | 3 | A | |||
Line regulation | IO = 1.5 A, VIN = 8 V to 28 V | ±0.05% | |||||
Load regulation | VIN = 24 V, IO = 0 A to 3 A | ±0.15% | |||||
Load transient response | IO = 0.75 A to 2.25 A | Voltage change | –190 | mV | |||
Recovery time | 150 | μs | |||||
IO = 2.25 A to 0.75 A | Voltage change | 190 | mV | ||||
Recovery time | 150 | μs | |||||
Loop bandwidth | VIN = 24 V, IO = 1.5 A | 31.6 | kHz | ||||
Phase margin | VIN = 24 V , IO = 1.5 A | 61 | ° | ||||
Input ripple voltage | IO = 3 A | 400 | mVPP | ||||
Output ripple voltage | IO = 3 A | <30 | mVPP | ||||
Output rise time | 2 | ms | |||||
Operating frequency | 340 | kHz | |||||
Maximum efficiency | TPS54335AEVM-010, VIN = 8 V, IO = 0.7 A | 96.5% |