TPS55332QPWPRQ1 - 3A 60V Boost Converter | TI AEC-Q100
MPN: TPS55332QPWPRQ1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.77 | $6.77 |
| 10 | $6.09 | $60.90 |
| 100 | $5.42 | $542.00 |
| 500 | $4.88 | $2,440.00 |
| 1,000 | $4.35 | $4,350.00 |
TPS55332QPWPRQ1 Overview
A boost converter (also called a step-up converter) is a switching DC/DC topology that produces an output voltage higher than its input. As a member of the power management IC family, the TPS55332-Q1 uses an internal power switch, pulse-width modulation (PWM) control, and external passive components (inductor, capacitors, diode) to step up voltage efficiently. It is a synchronous-rectifier-less (asynchronous) topology, simplifying design but requiring an external Schottky diode.
Key features include a wide operating input range from 1.5 V to 40 V (after 3.6 V startup), integrated 60-V load-dump protection, 5.7-A peak internal switch current, ±1.5% feedback voltage accuracy, and an internal voltage supervisor with power-good indication. Frequency-programmable operation enables optimization between efficiency and external component size.
The device uses current-mode control with internal compensation, simplifying the feedback loop and supporting ceramic output capacitors. The TPS55332-Q1 is qualified to AEC-Q100 Grade 1 with an operating junction temperature range of -40°C to +150°C, targeting harsh automotive electrical environments.
Typical applications include automotive infotainment and cluster power rails, LED driver bias supplies, industrial 24-V step-up conversions, and battery-fed systems requiring load-dump protection. When designing, select the inductor for less than 5.7-A peak current, place the input bypass capacitor close to the VIN pin, and connect the PowerPAD to a ground copper pour to dissipate switch losses.
Drop-in alternatives for TPS55332QPWPRQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS55332PWP
✅ Drop-In📋 Reference alternative (not in catalog)
TPS55332QPWPREP
✅ Drop-In📋 Reference alternative (not in catalog)
TPS55340QPWPRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
LM5155QPWPRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
TPS61170QPWPRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
TPS55332QPWPRQ1 Maximum Ratings & Electrical Characteristics
| Topology | Boost (Step-Up) |
| Input Voltage Range | 1.5 V to 40 V (after 3.6 V startup) |
| Maximum Input Voltage (Transient) | 60 V (load dump protection) |
| Output Voltage Range | 2.5 V to 50 V (adjustable) |
| Output Current | 500 mA (application-dependent, 3 A switch) |
| Switch Current (Peak) | 5.7 A (typical) |
| Switching Frequency Range | 80 kHz to 2.2 MHz (programmable) |
| Internal Switch MOSFET | 60 V, 3 A integrated |
| Feedback Voltage Accuracy | ±1.5% |
| PWM Control Mode | Voltage Mode (Current-Mode compatible per datasheet) |
| Synchronous Rectifier | No (asynchronous, external diode) |
| Number of Outputs | 1 |
| Package | 20-Pin HTSSOP (PWP) PowerPAD, 4.40 mm body width |
| Mounting Type | Surface Mount |
| Operating Junction Temperature | -40°C to +150°C |
| Automotive Qualification | AEC-Q100 Grade 1 |
| RoHS Status | Compliant |
TPS55332QPWPRQ1 Pin Configuration
| Pin 1 | AGND — Analog ground reference |
| Pin 2 | RT/SS — Frequency set / soft-start |
| Pin 3 | FB — Feedback voltage input |
| Pin 4 | COMP — Compensation network node |
| Pin 5 | EN — Enable input |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | BST — Bootstrap for high-side driver |
| Pin 8 | SW — Switch node |
| Pin 9 | SW — Switch node |
| Pin 10 | NC — Not connected (per datasheet) |
| Pin 11 | VIN — Input supply voltage |
| Pin 12 | VIN — Input supply voltage |
| Pin 13 | PGND — Power ground |
| Pin 14 | PGND — Power ground |
| Pin 15 | VOUT — Output voltage sense |
| Pin 16 | PGND — Power ground |
| Pin 17 | PGND — Power ground |
| Pin 18 | VIN — Input supply voltage |
| Pin 19 | PGND — Power ground |
| Pin 20 | PGND — Power ground |
Typical Applications
TPS55332QPWPRQ1 is suitable for 6 applications: Automotive Infotainment Power Rail, LED Driver Bias Supply, Industrial 24-V Step-Up Conversion, Battery-Fed Portable System Boost, Automotive Sensor Supply Rail, 12-V to 24-V Battery-Backed Boost.
Automotive Infotainment Power Rail
The TPS55332QPWPRQ1 is well-matched to automotive infotainment power rails thanks to its 1.5-V to 40-V input range, 60-V load-dump protection, and AEC-Q100 Grade 1 qualification. The 3-A internal switch with 5.7-A peak capability easily delivers 1 A to 2 A continuous current for head-unit display bias, audio amplifier rails, and USB charging outputs. The 2.5-V to 50-V adjustable output supports common rail voltages including 5 V, 9 V, 12 V, and 15 V for downstream point-of-load converters. Its wide 80-kHz to 2.2-MHz switching range allows designers to move above the AM radio band for noise-sensitive audio applications.
Recommended
LED Driver Bias Supply
The TPS55332QPWPRQ1 serves as a high-voltage bias supply for automotive LED backlighting and exterior lighting drivers. Its adjustable 2.5-V to 50-V output directly produces the 12-V to 40-V rails required by LED driver ICs in headlights, tail lamps, and dashboard backlights. The 60-V transient withstand handles load-dump events common in 12-V automotive buses without requiring external TVS protection. The 3-A switch delivers sufficient current for multi-LED string drivers, and frequency programmability above 1 MHz shrinks the boost inductor to a small 4.7-µH to 10-µH value, ideal for compact lamp-module PCBs.
Recommended
Industrial 24-V Step-Up Conversion
For industrial 24-V bus step-up to higher intermediate rails, the TPS55332QPWPRQ1 accepts 24-V nominal input with 60-V transient tolerance, ideal for factory-automation power designs. The 3-A switch and 50-V output ceiling convert 24-V bus to 36-V or 48-V rails for industrial sensor supplies, isolated gate drivers, and IGBT module bias. AEC-Q100 qualification provides extra reliability margin in harsh industrial environments with temperature swings and voltage transients. The HTSSOP-20 PowerPAD package offers ~30°C/W junction-to-ambient thermal resistance with proper copper pours.
Recommended
Battery-Fed Portable System Boost
The TPS55332QPWPRQ1 boosts 1.5-V to 12-V battery sources to stable 5-V, 9-V, or 12-V rails for portable instrumentation and emergency backup devices. Its 1.5-V minimum input (after 3.6-V startup) supports depleted alkaline or lithium battery packs, extending usable runtime. The 3-A internal switch handles load steps common when wireless radios or displays wake up. Frequency programming to 2.2 MHz shrinks the external inductor and capacitors for handheld form-factor designs. The HTSSOP-20 PowerPAD package provides efficient thermal dissipation in sealed enclosures.
Recommended
Automotive Sensor Supply Rail
The TPS55332QPWPRQ1 provides clean, regulated rails for ADAS sensor modules including camera, radar, and lidar power trees. Its 60-V load-dump tolerance and AEC-Q100 Grade 1 certification meet automotive OEM requirements for sensor safety-critical circuits. The 2.5-V to 50-V adjustable output supports sensor bias voltages from 3.3 V logic rails to 24-V analog front-end supplies. With 5.7-A peak switch current, the device handles inrush transients when sensors power up. The fixed-frequency PWM control and small HTSSOP-20 footprint simplify EMI compliance in densely packed sensor modules.
Recommended
12-V to 24-V Battery-Backed Boost
The TPS55332QPWPRQ1 is ideal for 12-V to 24-V automotive battery-backed systems that need step-up conversion for body control modules and accessory power outlets. The wide input range supports cold-crank events down to 4.5-V on 12-V automotive batteries, while the 60-V rating handles jump-start and load-dump surges. The 3-A internal switch delivers enough current for USB-PD outlets, 24-V truck cabin accessories, and emergency lighting. Frequency programmability allows AM-band avoidance for body-controller modules that share the wiring harness with radio antennas.
Recommended
Recommended Products Summary
Engineering reference data for TPS55332QPWPRQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS55332PWP | TPS55332QPWPREP | TPS55340QPWPRQ1 | LM5155QPWPRQ1 | TPS61170QPWPRQ1 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | HTSSOP-20 (PWP) | HTSSOP-20 (PWP) - same | HTSSOP-20 (PWP) - same | HTSSOP-20 (PWP) - same | HTSSOP-20 (PWP) - same | HTSSOP-20 (PWP) - same |
| Topology | Boost (Step-Up) | Boost (Step-Up) | Boost (Step-Up) | Buck (Step-Down) | Boost/SEPIC/Boost | Boost (Step-Up) |
| Input Voltage Range | 1.5 V to 40 V | 1.5 V to 40 V | 1.5 V to 40 V | 4.5 V to 42 V | 1.5 V to 45 V | 3 V to 38 V |
| Output Voltage Range | 2.5 V to 50 V | 2.5 V to 50 V | 2.5 V to 50 V | 0.8 V to ~Vin | Up to 50 V+ | Up to 38 V |
| Switch Current | 3 A (5.7 A peak) | 3 A (5.7 A peak) | 3 A (5.7 A peak) | 3.5 A | 6 A peak | 3 A |
| Switching Frequency Range | 80 kHz to 2.2 MHz | 80 kHz to 2.2 MHz | 80 kHz to 2.2 MHz | 100 kHz to 1 MHz | 100 kHz to 2.2 MHz | Up to 2.2 MHz |
| AEC-Q100 Automotive Grade | Yes (Grade 1) | No | Yes (Grade 1) | Yes (Grade 1) | Yes (Grade 1) | Yes (Grade 1) |
Key Differentiators
- AEC-Q100 Grade 1 qualified (vs TPS55332PWP)
- Step-up topology vs step-down (vs TPS55340QPWPRQ1)
- Higher transient withstand voltage (vs TPS61170QPWPRQ1)
Design Notes
The HTSSOP-20 PowerPAD package relies on the bottom exposed pad for primary heat dissipation. Use at least 4 thermal vias (0.3-mm drill, 1-oz copper plating) under the PowerPAD connected to an inner ground copper pour of 1 sq-in minimum. At maximum VIN=24-V to VOUT=48-V conversion at 500-mA load (estimated: 7.2-W dissipation), junction temperature rise above ambient may exceed 50°C without adequate copper area.
Place the input bypass capacitor (≥1-µF X7R ceramic) as close as possible to the VIN pins, and minimize the switching loop formed by VIN, SW, the external Schottky diode, and the inductor. Keep the SW trace short and wide to reduce EMI and voltage stress. Place the output capacitor (≥10-µF X7R ceramic) near the VOUT pin and the boost Schottky rectifier. Per TI datasheet layout guidelines, a 4-layer PCB with dedicated ground plane is recommended.
Estimated inductor sizing for 2.2-MHz operation at VIN=12-V to VOUT=24-V at 0.3-A load: L ≥ VIN*(VOUT-VIN)/(0.3*FSW*VOUT) = 12*12/(0.3*2.2e6*24) ≈ 0.91 µH. Select a 1.5-µH inductor rated for ≥5-A saturation current. Never use a diode with reverse-voltage rating below the application's maximum transient - select 60-V or 100-V Schottky for 24-V output applications. Avoid using electrolytic capacitors on the output - the TPS55332-Q1 stability requires ceramic X7R output capacitance per TI datasheet.
Compliance Information
AEC-Q100 Grade 1 qualified for automotive applications. RoHS and REACH compliant per TI product page. The Q1 suffix denotes TI's automotive-qualified part variant.
