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The TPS629210 is a high efficiency and highly flexible synchronous step-down buck converter in a small 1.6-mm × 2.1-mm SOT583 package. The TPS629210 can be configured to run 2.5 MHz or 1 MHz in either forced PWM mode or auto PFM/PWM mode. In 2.5-MHz auto PFM/PWM mode, automatic efficiency enhancement 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 the following:
The TPS629210EVM(BSR131-005) uses 1-A TPS629210 to produce a 3.3-V output from a 12-V input.
Table 2-1 provides a summary of the TPS629210EVM performance specifications. All the specifications are given at an ambient temperature of 25°C.
| Specification | Test Conditions | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| Input voltage | 5 | 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, 3.3-μH inductor | 5.7 | mA | ||
| VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, forced PWM, 2.5 MHz, 3.3-μH inductor | 0.302 | 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, VSET, 3.3-μH inductor | ±0.15 | % | ||
| Load regulation | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–1 A, forced PWM and auto PFM/PWM with AEE, 2.5 MHz, VSET, 3.3-μH inductor | ±0.15 | % | ||
| Output ripple | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, forced PWM, 2.5 MHz, 3.3-μH inductor | 10 | mV | ||
| Peak efficiency | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–1 A, forced PWM, 2.5 MHz, 3.3-μH inductor | 90.43 | % | ||
| VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–1 A, auto PFM/PWM with AEE, 2.5 MHz, 3.3-μH inductor | 90.77 | % | |||
| VIN = 12 V, VOUT = 3.3 V,IOUT = 10 mA, auto PFM/PWM with AEE, 2.5 MHz, 3.3-μH inductor | 84.66 | % | |||
| Output rise time | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, forced PWM, 2.5 MHz, 3.3-μH inductor | 500 | μs | ||
| Load transient | VIN = 12 V, VOUT = 3.3 V, IOUT = 0.5 A–1 A, Slew rate: 1 A/μs, forced PWM, VSET, 2.5 MHz, 3.3-μH inductor | ±58 | mV | ||
| Loop bandwidth | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, forced PWM, VSET, 2.5 MHz, 3.3-μH inductor | 95.89 | kHz | ||
| Phase margin | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, forced PWM, VSET, 2.5 MHz, 3.3-μH inductor | 84.4 | ° | ||
| IC case temperature | VIN = 12 V, VOUT = 3.3 V, IOUT = 1 A, forced PWM, 2.5 MHz, 3.3-μH inductor, 10 minutes soaking | 34.6 | °C |
