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Texas Instruments TPS63020QDSJTQ1
- Part No.:
- TPS63020QDSJTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 14-VFDFN Exposed Pad
- Datasheet:
-
TPS63020QDSJTQ1.pdf
- Description:
- IC REG BUCK BST ADJ 3.5A 14VSON
- Quantity:
- Payment:
- Shipping:
Inventory:582
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Product details
Overview
TPS63020QDSJTQ1 from Texas Instruments is an automotive-grade synchronous buck-boost DC/DC converter with 4-A internal switches, 1.2 V to 5.5 V adjustable output, 2.4 MHz fixed-frequency operation, and integrated power good (PG) output. It delivers up to 3 A at 3.3 V in buck mode and >2 A in boost mode from a single-cell Li-ion or two-/three-cell alkaline/NiMH source - ideal for infotainment power rails.
For engineers reviewing the TPS63020QDSJTQ1 datasheet, TPS63020QDSJTQ1 pinout, TPS63020QDSJTQ1 application, or TPS63020QDSJTQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), dynamic input current limiting, <50 µA quiescent current in shutdown, and seamless automatic buck/boost transition without external mode control.
Technical Context
The TPS63020QDSJTQ1 implements average current-mode control with input/output voltage feedforward for fast transient response. Its 4-switch topology uses two dedicated ground pins (GND for logic, PGND for power switches) and operates in buck mode when VIN > VOUT and boost mode when VIN < VOUT - with no classical buck-boost overlap cycles due to Buck-Boost Overlap Control™.
It features dynamic current limiting that reduces switch current threshold as VIN drops below 2.3 V or die temperature exceeds 140°C, plus power save mode (enabled via PS/SYNC low) that reduces switching frequency and quiescent current below ~100 mA load - maintaining >85% efficiency at 100 µA output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion (2.5–4.2 V) and multi-cell alkaline/NiMH (2.4–4.5 V) without external regulators. |
| Output Voltage Range | 1.2 V to 5.5 V - programmable via external resistor divider; FB pin reference is 500 mV ±1%. |
| Max Output Current | 3 A at 3.3 V in buck mode (VIN > 3.6 V); >2 A at 3.3 V in boost mode (VIN > 2.5 V) - enabled by 4-A average switch current limit. |
| Switching Frequency | 2.4 MHz nominal (2.2–2.6 MHz range) - allows compact 1–1.5 µH inductors and reduces EMI fundamental frequency. |
| Quiescent Current | <50 µA in shutdown (VEN = 0 V); <10 µA in power save mode - extends battery runtime in always-on automotive modules. |
| Efficiency Peak | 96% at mid-load - achieved via synchronous rectification, low RDS(on) (50 mΩ high/low side), and optimized gate drive. |
| Thermal Resistance | RθJA = 41.8°C/W - enables 2.5 W continuous power dissipation in DSJ package with minimal PCB copper. |
Pinout & Package
The TPS63020QDSJTQ1 is housed in a thermally enhanced 3 mm × 4 mm, 14-pin VSON (DSJ) package with exposed thermal pad connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINA | Control-stage supply | Provides bias for internal logic; must be ≥1.5 V for UVLO release; decoupled separately from VIN. |
| VIN | Power-stage supply | High-current input for switches; accepts 1.8–5.5 V; shares PGND return path with L1/L2/VOUT. |
| EN | Enable input | Active-high digital enable; open-drain compatible; forces full shutdown and load disconnect when low. |
| PS/SYNC | Mode control/sync input | Low = power save mode; high = forced PWM; external clock input synchronizes switching to 2.2–2.6 MHz. |
| FB | Feedback input | Monitors output via resistor divider; 500 mV reference sets VOUT = 500 mV × (1 + R1/R2). |
| PG | Power good output | Open-drain status flag; pulls low if VOUT deviates >±5% or overtemperature/overvoltage occurs. |
| L1, L2 | Inductor connections | Dual inductor terminals support 4-switch topology; L1 connects to high-side buck/low-side boost; L2 to low-side buck/high-side boost. |
| VOUT | Regulated output | Delivers stable output; requires ≥2×10 µF ceramic capacitance; PGND return path critical for stability. |
| GND | Logic ground | Reference for EN, PS/SYNC, FB, PG; must connect to PGND at single point near GND pin to avoid noise coupling. |
| PGND | Power ground | Return path for all high-current switches (VIN, L1, L2, VOUT); exposed thermal pad tied directly to this node. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to 125°C TJ), HBM ±1000 V, CDM ±500 V - validated for infotainment and telematics under harsh vehicle environments. |
| Dynamic current limiting | Reduces switch current limit from 4 A down to ~2 A as VIN drops below 2.3 V or TJ exceeds 140°C - prevents thermal runaway during weak-battery or overload conditions. |
| Smart power good (PG) | Monitors control-loop integrity in real time; asserts low before VOUT deviation exceeds ±5% - enables system-level fault recovery before rail collapse. |
| Load disconnect in shutdown | Internal switches fully isolate VOUT from VIN when EN = low - eliminates standby leakage and protects downstream circuitry. |
| Buck-Boost Overlap Control™ | Eliminates simultaneous conduction of opposing switches during VIN ≈ VOUT transitions - reduces shoot-through losses and improves efficiency by up to 3% in mid-input region. |
Applications
| Infotainment Display Power | Telematics eCall Module |
|---|---|
|
Use Scenario: Powering 3.3 V LCD backlight and SoC I/O rails from a 3.7 V Li-ion battery across full discharge curve (4.2 V → 2.8 V). IC Role / Device Role / Timing Role: Primary buck-boost regulator providing constant 3.3 V output while automatically transitioning between buck (VIN > 3.3 V) and boost (VIN < 3.3 V) modes. Use Value: Eliminates need for separate buck + boost ICs; maintains >90% efficiency from 3.0 V to 4.2 V input; PG signal triggers display reset if output drops. |
Use Scenario: Supplying 5 V to GSM modem and GPS receiver in emergency call (eCall) hardware, operating from 12 V vehicle supply via LDO pre-regulator or direct from 3.7 V battery. IC Role / Device Role / Timing Role: Secondary regulated rail generator supporting burst-mode transmission; handles input dips during engine cranking (down to 1.8 V). Use Value: Dynamic current limit prevents brownout during RF transmit bursts; <50 µA shutdown current preserves battery for 10+ years in standby. |
| ADAS Camera Sensor Bias | Automotive Body Control Unit |
|
Use Scenario: Generating stable 2.5 V analog supply for CMOS image sensor and ADC in rear-view camera module powered by 12 V vehicle bus. IC Role / Device Role / Timing Role: Precision low-noise buck-boost converter with tight load regulation (<0.5%) and fast line transient response (<10 µs). Use Value: Maintains sensor SNR across wide input range (5.5 V–16 V after pre-LDO); PG flag disables sensor if VOUT drifts beyond ±25 mV. |
Use Scenario: Providing 3.3 V microcontroller core voltage and 5 V CAN transceiver supply from variable 9–16 V vehicle battery with cold-crank dips to 3.5 V. IC Role / Device Role / Timing Role: Dual-rail power manager using single TPS63020QDSJTQ1 per rail; synchronized switching minimizes EMI coupling between domains. Use Value: Synchronization via PS/SYNC pin aligns switching edges across multiple converters - simplifies EMI filter design and meets CISPR-25 Class 5 limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS630250RVER | Non-automotive grade; same 1.2–5.5 V output, 4-A switches, but only rated –40°C to 85°C; lacks AEC-Q100 certification and automotive ESD ratings. | Suitable for industrial or consumer portable devices where automotive qualification is not required. | Select TPS630250RVER only if cost sensitivity outweighs automotive reliability requirements and ambient temperature stays ≤85°C. |
| MAX20406AATP+ | Higher integration: includes I2C interface, programmable soft-start, and configurable PGOOD thresholds; 3.5-A switch rating; 2.2–5.5 V input. | Preferred for systems requiring dynamic voltage scaling or telemetry feedback; adds BOM cost and layout complexity. | Choose MAX20406AATP+ when firmware-controlled rail sequencing or real-time telemetry is needed - not for drop-in replacement. |
Compared with TPS63020QDSJTQ1, TPS630250RVER sacrifices automotive qualification for lower unit cost, while MAX20406AATP+ trades simplicity for configurability and telemetry - making TPS63020QDSJTQ1 optimal for cost-constrained, safety-compliant automotive power where fixed-function reliability is prioritized.
Availability
TPS63020QDSJTQ1 is available at Aetrix Electronics and suitable for infotainment, telematics, ADAS camera, and body control unit designs requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TPS63020QDSJTQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management ICs, with decades of automotive qualification expertise and broad manufacturing scale.
The TPS63020-Q1 belongs to TI's automotive-qualified buck-boost converter family, designed specifically to replace discrete buck + boost solutions in space-constrained, battery-powered vehicle subsystems demanding high efficiency and robust fault protection.
FAQ
What is the maximum continuous output current capability of the TPS63020QDSJTQ1 in boost mode?
The TPS63020QDSJTQ1 delivers more than 2 A continuously at 3.3 V output when operating in boost mode (VIN > 2.5 V). This is enabled by its 4-A average switch current limit and synchronous 4-switch architecture, which maintains high efficiency even as input voltage approaches output voltage - critical for single-cell Li-ion applications discharging from 4.2 V down to 2.5 V.
How does the TPS63020QDSJTQ1 handle input voltage dropout during cold-cranking in automotive systems?
The TPS63020QDSJTQ1 sustains operation down to 1.8 V input and incorporates dynamic current limiting that reduces the 4-A switch current threshold as VIN drops below 2.3 V. During cold-cranking events where vehicle battery dips to ~3.5 V, the device remains active in boost mode while throttling peak current to prevent thermal stress - ensuring uninterrupted power to safety-critical modules like eCall or camera sensors.
Can the TPS63020QDSJTQ1 be synchronized to an external clock, and what is the supported frequency range?
Yes, the TPS63020QDSJTQ1 supports external synchronization via the PS/SYNC pin. When driven with a clean logic-level clock signal, it locks to frequencies between 2.2 MHz and 2.6 MHz using an internal PLL - matching its native 2.4 MHz switching frequency. This capability enables EMI reduction through frequency alignment across multiple converters on the same PCB, without requiring changes to inductor or capacitor values.
What is the purpose of the separate VINA and VIN pins on the TPS63020QDSJTQ1?
VINA supplies power to the control circuitry (bias, error amplifier, logic), while VIN powers the high-current power switches. Separating these rails ensures stable operation of the control loop even when VIN experiences large transients or ripple - common in automotive battery inputs. VINA must be ≥1.5 V to release UVLO, and both pins require independent 0.1 µF ceramic decoupling close to the package.
Does the TPS63020QDSJTQ1 provide load disconnect during shutdown, and how is it implemented?
Yes, the TPS63020QDSJTQ1 fully disconnects the load from the input during shutdown (EN = low). Internal MOSFETs open all four switch paths, breaking the conduction path between VIN and VOUT. This eliminates standby current leakage - reducing shutdown current to just 0.1 µA - and protects downstream circuitry from backfeed or unintended power-up when the main supply is removed.
TPS63020QDSJTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3.5A (Switch)
- Frequency - Switching:
- 2.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-VSON (4x3)
TPS63020QDSJTQ1 FAQ
1.How can I place an order for TPS63020QDSJTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS63020QDSJTQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS63020QDSJTQ1 reliable?
The price and inventory of TPS63020QDSJTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS63020QDSJTQ1 is usually 5 days.
3.What payment methods are accepted for TPS63020QDSJTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS63020QDSJTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS63020QDSJTQ1?
TPS63020QDSJTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS63020QDSJTQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS63020QDSJTQ1?
For technical support, including TPS63020QDSJTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS63020QDSJTQ1 requirements.
6.How does Aetrix verify that TPS63020QDSJTQ1 is sourced from the original manufacturer or authorized distributors?
All TPS63020QDSJTQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS63020QDSJTQ1 meets industry standards.
7.What is the process for return or replacement of TPS63020QDSJTQ1?
All TPS63020QDSJTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS63020QDSJTQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS63020QDSJTQ1 part is unused and in its original packaging.
Return procedure for TPS63020QDSJTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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