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The TPS61379-Q1 is a fully-integrated synchronous boost converter with load disconnect function integrated. The device is suitable as a post-boost for automotive applications with a programmable current limit up to 2 A and maximum 18.5-V output voltage. This EVM is optimized for 3.3-V to 6.5-V input voltage and 9-V output voltage applications. The operating conditions of the EVM can easily be changed by modifying the external components of the TPS61379-Q1 device.
Table 1-1 provides the summary of the TPS61379Q1EVM performance specifications. All the specifications are given for an ambient temperature of 25°C.
Specification | Test Condition | MIN | TYP | MAX | UNIT |
---|---|---|---|---|---|
Input voltage | 3.3 | 5.0 | 6.5 | V | |
Output voltage | VIN = 5 V, IO= 0.5 A | 8.8 | 9 | 9.2 | V |
Output current | VIN = 3.3 V | 0.3 | A | ||
VIN = 5 V | 0.45 | ||||
Switching frequency | 2.2 | MHz |
The external components of the TPS61379-Q1 device can be modified to adjust to output voltage, switch current limit, switching frequency, and response speed of real applications. For VIN higher than 6.0-V condition, the resistor R10 should be soldered as EN maximum voltage rating is 6.0 V.
The 47-uF, 25-V, tantalum capacitor C9 is added as the input capacitor in the EVM. The ESR of the tantalum capacitor is 0.12 Ω to damp the ringing of the input capacitor when the EVM is powered by a power supply with a long cable. The capacitor is not necessary and can be removed in a real application.