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The TPS629206-Q1 is high-efficiency and highly flexible synchronous step-down buck converter in a small 1.6-mm × 2.1-mm SOT583 package. The TPS629206-Q1 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, 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 needing to use different inductors. The device includes a MODE/S-CONF input to select different combinations of following:
Table 2-1 provides a summary of the TPS629206-Q1EVM 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 | 600 | mA | ||
| Input current | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A, forced PWM, 2.5 MHz, 2.2-μH inductor | 6.2 | mA | ||
| VIN = 12 V, VOUT = 3.3 V, IOUT = 600 mA, forced PWM, 2.5 MHz, 2.2-μH inductor | 0.181 | A | |||
| Switching frequency | Set by the Mode/S-CONF pin | 2.5 | MHz | ||
| Line regulation | VIN = 5 V–17 V, VOUT= 3.3 V, IOUT = 0 A and 600 mA, forced PWM, 2.5 MHz, VSET, 2.2-μH inductor | +0.3%, –0.15% | |||
| Load regulation | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–600 mA, forced PWM and auto PFM/PWM with AEE, 2.5 MHz, VSET, 2.2-μH inductor | ±0.15% | |||
| Output ripple | VIN = 12 V, VOUT = 3.3 V, IOUT = 600 mA, forced PWM, 2.5 MHz, 2.2-μH inductor | 10.6 | mV | ||
| Peak efficiency | VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–600 mA, forced PWM, 2.5 MHz, 2.2-μH inductor | 91.3% | |||
| VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A–600 mA, auto PFM/PWM with AEE, 2.5 MHz, 2.2-μH inductor | 91.72% | ||||
| VIN = 12 V, VOUT = 3.3 V, IOUT = 10 mA, auto PFM/PWM with AEE, 2.5 MHz, 2.2-μH inductor | 86.2% | ||||
| Output rise time | VIN = 12 V, VOUT = 3.3 V, IOUT = 600 mA, forced PWM, 2.5 MHz, 2.2-μH inductor | 500 | μs | ||
| Load transient | VIN = 12 V, VOUT = 3.3 V, IOUT = 300 mA–600 mA, slew rate: 1 A/μs, forced PWM, VSET, 2.5 MHz, 2.2-μH inductor | ±29 | mV | ||
| Loop bandwidth | VIN = 12 V, VOUT = 3.3 V, IOUT = 600 mA, forced PWM, VSET, 2.5 MHz, 2.2-μH inductor | 153 | kHz | ||
| Phase margin | VIN = 12 V, VOUT = 3.3 V, IOUT = 600 mA, forced PWM, VSET, 2.5 MHz, 2.2-μH inductor | 86.7 | deg | ||
| IC case temperature | VIN = 12 V, VOUT = 3.3 V, IOUT = 600 mA, forced PWM, 2.5 MHz, 2.2-μH inductor, 10 minutes soaking | 30.5 | °C |
The EVM is designed to provide access to features of the TPS629206-Q1. The EVM also provides jumpers for different configurations. Jumper selections must be made prior to enabling the TPS629206-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 TPS629206-Q1EVM allows multiple MODE/S-CONF pin configurations. The loop response can also be measured.