Overview
The TPS54292PWPR from Texas Instruments is a dual-output, fully synchronous buck converter designed to support a wide range of applications with minimal external components. This device operates from an input supply voltage of 4.5 V to 18 V and can produce output voltages as low as 0.8 V and as high as 90% of the input voltage. It features integrated high-side and low-side MOSFETs, providing high efficiency and simplified compensation through current mode control.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Input Voltage Range | 4.5 V to 18 V | |
| Output Voltage Range | 0.8 V to 90% of VIN | |
| Output Current (Channel 1) | Up to 1.5 A | |
| Output Current (Channel 2) | Up to 2.5 A | |
| Switching Frequency | 1.2 MHz | |
| Voltage Reference Accuracy | 0.8 V ± 1% (0°C to 85°C) | |
| Soft-Start Time | 1.3 ms | |
| Overcurrent Protection | 2.2 A and 3.8 A | Pulse-by-pulse overcurrent protection |
| Thermal Shutdown | 145°C | |
| Package | 16-Pin PowerPAD™ HTSSOP | Body size: 5.00 mm × 4.40 mm |
Key Features
- Fully integrated dual buck converter with 1.5 A and 2.5 A output currents.
- Three fixed switching frequency versions: TPS54290 (300 kHz), TPS54291 (600 kHz), and TPS54292 (1.2 MHz).
- Integrated UVLO (Under-Voltage Lockout) and thermal shutdown protection at 145°C.
- Internal soft start with adjustable times: 5.2 ms for TPS54290, 2.6 ms for TPS54291, and 1.3 ms for TPS54292.
- Dual PWM outputs 180° out-of-phase to reduce ripple current through the input capacitor.
- Dedicated enable for each channel.
- Current mode control for simplified compensation and external compensation flexibility.
- Pulse-by-pulse overcurrent protection with hiccup timeout.
- Integrated bootstrap switch.
Applications
- Set-Top Boxes
- Digital TVs
- Power for DSP (Digital Signal Processors)
- Consumer Electronics
Q & A
- What is the input voltage range of the TPS54292PWPR?
The input voltage range is from 4.5 V to 18 V.
- What are the output current capabilities of the TPS54292PWPR?
Channel 1 can provide up to 1.5 A, and Channel 2 can provide up to 2.5 A.
- What is the switching frequency of the TPS54292PWPR?
The switching frequency is 1.2 MHz.
- What is the accuracy of the voltage reference?
The voltage reference accuracy is 0.8 V ± 1% from 0°C to 85°C.
- Does the TPS54292PWPR have thermal shutdown protection?
- What type of package does the TPS54292PWPR come in?
- What is the purpose of the 180° out-of-phase PWM outputs?
The 180° out-of-phase PWM outputs reduce the ripple current through the input capacitor, alleviating EMI and increasing capacitor life.
- Does the TPS54292PWPR have overcurrent protection?
- What are some common applications for the TPS54292PWPR?
- What is the soft-start time for the TPS54292PWPR?
