Overview
The TPS62402-Q1 is a part of the TPS6240x-Q1 family of synchronous dual step-down DC-DC converters produced by Texas Instruments. This device is optimized for battery-powered portable applications and automotive systems. It features two independent output voltage rails, making it suitable for powering various components in infotainment, cluster, and Advanced Driver Assistance Systems (ADAS).
The TPS62402-Q1 operates at a fixed switching frequency of 2.25 MHz and can enter power-save mode at light load currents to maintain high efficiency. The device supports adjustable output voltages and includes an optional EasyScale™ serial interface for dynamic voltage scaling.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VIN Range | 2.5 V to 6 V | V |
| Switching Frequency | 2.25 MHz | MHz |
| Output Current (Converter 1) | 400 mA | mA |
| Output Current (Converter 2) | 600 mA | mA |
| Output Voltage (Converter 1) | Fixed default: 1.2 V or 1.8 V (depending on DEF_1 pin) | V |
| Output Voltage (Converter 2) | Fixed default: 3.3 V | V |
| Efficiency | Up to 95% | % |
| Quiescent Current | Typical 32 μA for both converters | μA |
| Operating Junction Temperature Range | –40°C to 125°C | °C |
| Package | 10-Pin VSON with thermal pad | |
| Body Size | 3.00 mm × 3.00 mm | mm |
Key Features
- Qualified for automotive applications with AEC-Q100 certification
- High efficiency up to 95%
- Adjustable output voltage from 0.6 V to VIN using external resistors or EasyScale™ serial interface
- Pin-selectable output voltage for simple dynamic voltage scaling
- Power-save mode at light load currents
- 180° out-of-phase operation between converters to reduce input rms current
- Output-voltage accuracy in PWM mode ±1%
- 100% duty cycle for lowest dropout
- Small solution size using small inductors and capacitors
Applications
- Infotainment and cluster systems
- Advanced Driver Assistance Systems (ADAS)
- Battery-powered portable applications
- Automotive systems requiring dual independent output voltage rails
Q & A
- What is the operating voltage range of the TPS62402-Q1?
The TPS62402-Q1 operates within a VIN range of 2.5 V to 6 V.
- What is the switching frequency of the TPS62402-Q1?
The switching frequency is fixed at 2.25 MHz.
- What are the output currents for the two converters?
Converter 1 has an output current of 400 mA, and Converter 2 has an output current of 600 mA.
- How can the output voltage be adjusted?
The output voltage can be adjusted using external resistors or the EasyScale™ serial interface.
- What is the efficiency of the TPS62402-Q1?
The device achieves an efficiency of up to 95%.
- What is the quiescent current of the device?
The typical quiescent current for both converters is 32 μA.
- What is the operating junction temperature range of the TPS62402-Q1?
The operating junction temperature range is –40°C to 125°C.
- What package type is the TPS62402-Q1 available in?
The device is available in a 10-Pin VSON package with a thermal pad.
- What are the typical applications for the TPS62402-Q1?
The device is typically used in infotainment, cluster systems, ADAS, and other automotive applications.
- How does the power-save mode work?
The device enters power-save mode at light load currents to maintain high efficiency.
