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TPS629210-Q1 is a high efficiency and high flexible synchronous step-down buck converter in a small 1.6 × 2.1 mm SOT583 package. TPS629210-Q1 can be configured to run at 2.5 MHz or 1 MHz in either forced PWM mode or auto PFM mode. In 2.5-MHz auto PFM mode, TI AEE™ mode automatically adjusts the switching frequency based on both input and output voltage to hold a high efficiency through the whole operation range without the need of using different inductors. The device includes a smart-Config/Mode input to select different combinations of external/internal feedback dividers, max switching frequencies, output discharge enable/disable and auto PFM/forced PWM operations.
Table as below provides a summary of TPS629210-Q1EVM performance specifications. All the specifications are given for an ambient temperature of 25°C.
| Specification | Test Conditions | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Input Voltage | 3 | 12 | 17 | V | |
| Output Voltage | 3.3 | V | |||
| Output Current | 0 | 1 | A | ||
| Input Current | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A, Forced PWM, 2.5 MHz | 6.1 | mA | ||
| VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, Forced PWM, 2.5 MHz | 0.307 | A | |||
| Switching frequency | Set by Mode/S-CONF pin | 2.5 | MHz | ||
| Line Regulation | VIN = 5 V–17 V, VOUT= 3.3 V, IOUT = 1 A, Forced PWM, 2.5 MHz | +/-0.15 | % | ||
| Load Regulation | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–1 A, Forced PWM and Auto PFM with AEE, 2.5 MHz | +/-0.15 | % | ||
| Output Ripple | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, Forced PWM, 2.5 MHz | 10.6 | mV | ||
| Peak Efficiency | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–1 A, Forced PWM, 2.5 MHz | 90.8 | % | ||
| VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–1 A, Auto PFM/PWM with AEE, 2.5 MHz | 91.2 | % | |||
| VIN = 12 V, VOUT = 3.3 V,IOUT = 10 mA, Auto PFM/PWM with AEE, 2.5 MHz | 87.11 | % | |||
| Output Rise time | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, Forced PWM, 2.5 MHz | 520 | us | ||
| Load Transient | VIN = 12 V, VOUT = 3.3 V, IOUT = 0.5 A–1 A, Slew rate: 1 A/us, Forced PWM, Internal FB, 2.5 MHz | +/-42 | mV | ||
| Loop Bandwidth | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, Forced PWM, Internal FB,2.5 MHz | 139 | kHz | ||
| Phase Margin | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, Forced PWM, Internal FB, 2.5 MHz | 86 | deg | ||
| IC case temperature | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, Forced PWM, 2.5 MHz, 10 minutes soaking | 34.5 | °C |
The EVM is designed to provide access to features of TPE629210-Q1. The EVM also provides jumpers for different configurations. Jumper selections must be made prior to enabling the TPS629120-Q1. Additional input and output capacitors can be added. The input voltage at which the IC turns on can be programmed with a voltage divider. The TPS629210-Q1EVM allows multiple MODE/S-CONF pin configurations for switching frequency, auto PFM/PWM with AEE, forced PWM and output discharge setting as well as internal and external feedback options. The loop response can also be measured.
