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Texas Instruments TPS552872QWRYQRQ1
- Part No.:
- TPS552872QWRYQRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 21-PowerVFQFN
- Datasheet:
-
TPS552872QWRYQRQ1.pdf
- Description:
- IC REG BUCK BOOST ADJ 4A 21VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS552872QWRYQRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck-boost DC/DC converter integrating four MOSFETs, supporting 3.0 V to 36 V input and 0.8 V to 22 V programmable output, with ±1% reference accuracy, 4-A average inductor current limit, and operation from –40°C to +125°C ambient. It delivers up to 30 W from 12-V input in boost mode and enables compact power rails for ADAS camera modules and infotainment displays.
For engineers reviewing the TPS552872QWRYQRQ1 datasheet, TPS552872QWRYQRQ1 pinout, TPS552872QWRYQRQ1 application, or TPS552872QWRYQRQ1 equivalent, key selection factors include its wide VIN/VOUT range, average-current-mode control architecture, programmable 200 kHz–2.2 MHz switching frequency, integrated cable droop compensation (CDC), and automotive-grade thermal shutdown at 175°C with 20°C hysteresis.
Technical Context
The TPS552872QWRYQRQ1 employs average current-mode control with a transconductance error amplifier (GEA = 190 µA/V) and internal 1.2-V reference (±1% over temperature). It dynamically transitions among buck, buck-boost, and boost modes based on VIN vs. VOUT relationship, using cycle-by-cycle peak current limiting (6.5 A high-side, 6 A low-side) alongside 4-A average inductor current limit.
Switching frequency is set via external resistor on FSW pin (180–2400 kHz range) or synchronized externally via DITH/SYNC pin; spread spectrum dithering (±7%) minimizes EMI peaks. Power sequencing is managed through EN/UVLO (1.23-V UVLO threshold, 10-mV hysteresis) and MODE pin (1.2-V logic high threshold) for PFM/PWM selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 36 V - supports full automotive battery range including cold-crank (4.5 V) and load-dump (36 V) events. |
| Output Voltage Range | 0.8 V to 22 V - programmable via FB divider; enables single converter for multiple rail generation (e.g., 3.3 V, 5 V, 12 V). |
| Reference Accuracy | ±1% at TJ = –40°C to +125°C - ensures stable output regulation across full automotive temperature range. |
| Switching Frequency | 200 kHz to 2.2 MHz - selectable via FSW resistor; higher frequencies enable smaller magnetics (e.g., 4.7 µH inductor). |
| Average Inductor Current Limit | 4 A typical - protects against sustained overload; paired with hiccup-mode short-circuit protection (76-ms off time). |
| Thermal Shutdown Threshold | 175°C with 20°C hysteresis - prevents permanent damage during thermal stress; junction-to-ambient RθJA = 43.4°C/W (standard PCB). |
| Cable Droop Compensation | Programmable CDC output - sinks 7.5 µA into FB when ISP–ISN = 50 mV, enabling active voltage compensation over long cables. |
Pinout & Package
The TPS552872QWRYQRQ1 is housed in a 3.0-mm × 5.0-mm, 21-pin VQFN-HR (HotRod™) package with exposed thermal pad for enhanced thermal performance. The leadless QFN construction reduces parasitic inductance and improves EMI behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable & programmable UVLO input | Logic-high (>1.15 V) enables device; internal 1.23-V reference allows custom UVLO threshold with external resistor divider on VIN. |
| MODE | Light-load operating mode select | High = forced PWM (low-noise); low = auto PFM (high light-load efficiency); floating not allowed. |
| PG | Power-good open-drain output | Asserts high-Z when VOUT ≥ 95% of set value; pulls low when VOUT ≤ 90% - enables system power sequencing and fault monitoring. |
| ISP / ISN | Differential current sense inputs | Monitor output current via external sense resistor; trigger slow CC loop at 50-mV threshold (±2 mV tolerance) for precise current limiting. |
| CDC | Cable droop compensation output | Sinks current into FB node proportional to sensed current - compensates IR drop across output cables without external op-amp. |
| FB | Feedback input | Connects to resistor divider midpoint; internal 1.2-V reference sets VOUT = 1.2 × (1 + R1/R2); leakage <100 nA ensures accuracy with high-value dividers. |
| COMP | Error amplifier output | Interface for Type II/III compensation network; sink/source capability (20 µA/60 µA) supports stable loop design across load/transient conditions. |
| BOOT1 / BOOT2 | High-side gate driver supplies | Require 0.1-µF ceramic capacitors to SW1/SW2; enable efficient 11–14-mΩ high-side MOSFET drive in buck and boost paths. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated quad-MOSFET buck-boost topology | Eliminates 4 external power switches and associated gate drivers - reduces BOM count and layout area by >30% vs discrete solutions. |
| Automotive AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets stringent reliability and lifetime requirements for front-end ADAS and cockpit electronics. |
| Programmable cable droop compensation (CDC) | Directly regulates FB voltage based on ISP–ISN differential - maintains target output voltage at remote load point without feedback wire routing. |
| Spread-spectrum dithering & clock synchronization | Reduces EMI peak amplitude by spreading energy across ±7% bandwidth; external sync eliminates beat frequencies in multi-rail systems. |
| Hiccup-mode short-circuit protection | Disables switching for 76 ms then soft-starts - limits power dissipation during sustained shorts while preserving thermal margin of PCB and IC. |
| Internal VCC LDO with EXTVCC option | Supports dual supply: internal 5.2-V regulator (VIN or VOUT sourced) or external 5-V supply - reduces heat generation at high VIN/VOUT combinations. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Display Rail |
|---|---|
|
Use Scenario: Powers 3.3-V or 5-V image sensor and ISP in forward-facing camera module, operating from 9–16-V battery with cold-crank and load-dump transients. IC Role / Device Role / Timing Role: Primary buck-boost regulator delivering regulated output despite wide input variation; handles seamless mode transitions during VIN crossing VOUT. Use Value: Maintains uninterrupted imaging during engine start (VIN dip to 4.5 V) and load dump (VIN surge to 36 V) without brownout or overvoltage shutdown. |
Use Scenario: Generates 12-V backlight supply and 3.3-V logic rail for TFT display cluster, fed from vehicle battery with variable load and temperature. IC Role / Device Role / Timing Role: Dual-output capable converter (via secondary LDO or post-regulator) providing stable, low-noise rails with tight line/load regulation. Use Value: ±1% reference accuracy and 96.7% efficiency at 12-V IN/20-V OUT/1.5-A load ensure consistent brightness and minimal thermal impact on display housing. |
| Rear Combination Lamp Driver | Wireless Charging Transmitter Power |
|
Use Scenario: Supplies 12-V LED string driver in rear lamp assembly, where input varies from 9 V (accessory mode) to 15.5 V (alternator charging). IC Role / Device Role / Timing Role: Constant-current-capable buck-boost controller (via ISP/ISN sensing) regulating LED current independent of input fluctuations. Use Value: 4-A average current limit and hiccup-mode protection prevent thermal runaway during LED short or open-circuit faults in sealed lamp housing. |
Use Scenario: Provides 15-V/2-A input to Qi-compliant wireless power transmitter coil driver in center console, operating from 12-V battery with ripple and noise constraints. IC Role / Device Role / Timing Role: High-efficiency, low-EMI buck-boost stage preceding Class-E amplifier; spread spectrum and HotRod™ package suppress radiated emissions. Use Value: 98.3% efficiency at 12-V IN/12-V OUT/2-A load minimizes heat buildup near sensitive RF circuits; 2.2-MHz max switching avoids AM/FM bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | 3.5-A synchronous buck only; no boost capability; 3.5-V to 36-V input; fixed 5-V or adjustable output. | Limited to step-down only; cannot regulate above VIN - unsuitable for 12-V-to-20-V conversion or cold-crank backup. | Select when output ≤ input is guaranteed and cost-sensitive; requires separate boost stage for bidirectional voltage support. |
| TPS63802 | 2-A buck-boost; 1.8-V to 5.5-V input; 1.8-V to 5.5-V output; no AEC-Q100 qualification; 2.5-MHz max fSW. | Non-automotive grade; insufficient input range for 12-V systems; lower current rating limits power delivery. | Consider for non-automotive portable or industrial 3.3/5-V systems where AEC-Q100 and 36-V tolerance are unnecessary. |
Compared with LM61480-Q1 and TPS63802, the TPS552872QWRYQRQ1 uniquely combines 4-A bidirectional conversion, 36-V automotive input tolerance, AEC-Q100 Grade 1 qualification, and integrated cable compensation - making it the only qualified solution for safety-critical 12-V-to-20-V ADAS power rails requiring zero-layout rework across vehicle platforms.
Availability
TPS552872QWRYQRQ1 is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), automotive infotainment clusters, and rear lighting applications requiring stable component supply, long-term automotive lifecycle support, and traceable AEC-Q100-compliant sourcing.
Supply support for TPS552872QWRYQRQ1 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 company headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and personal electronics markets.
The TPS552872-Q1 belongs to TI's automotive-qualified DC/DC converter portfolio, engineered specifically for robust, high-efficiency power conversion in safety-critical vehicle subsystems where input voltage instability and thermal stress are routine operating conditions.
FAQ
What is the maximum output power capability of the TPS552872QWRYQRQ1?
The TPS552872QWRYQRQ1 delivers up to 30 W from a 12-V input in boost mode and 25 W from a 9-V input, enabled by its 4-A average inductor current limit, low RDS(on) MOSFETs (11–22 mΩ), and high-efficiency architecture (96.7% at 12-V IN/20-V OUT/1.5-A). Thermal derating applies above 125°C junction temperature.
Does the TPS552872QWRYQRQ1 support output voltage compensation for cable voltage drop?
Yes, the TPS552872QWRYQRQ1 provides dedicated cable droop compensation via the CDC pin. When a resistor connects CDC to AGND, the IC sinks current into the FB node proportional to output current (e.g., 7.5 µA at 50 mV ISP–ISN), actively raising VOUT to offset IR loss across long cables - eliminating need for remote sense traces.
How is switching frequency configured on the TPS552872QWRYQRQ1?
Switching frequency on the TPS552872QWRYQRQ1 is set by a resistor between FSW and AGND, ranging from 180 kHz (100-kΩ) to 2.2 MHz (8.4-kΩ). It also accepts external synchronization via the DITH/SYNC pin, supporting clock alignment in multi-converter systems and enabling spread-spectrum dithering to reduce EMI peaks.
What protection features does the TPS552872QWRYQRQ1 include?
The TPS552872QWRYQRQ1 integrates output overvoltage protection (22.5–24.5 V trip), hiccup-mode short-circuit response (76-ms off time), thermal shutdown (175°C), cycle-by-cycle peak current limiting (6.5 A high-side), and average inductor current limiting (4 A typical). All protections are hardware-based and operate independently of control loop stability.
Is the TPS552872QWRYQRQ1 pin-compatible with other TI buck-boost converters?
No, the TPS552872QWRYQRQ1 uses a unique 21-pin VQFN-HR (3.0 mm × 5.0 mm) package with specific pin assignments (e.g., dual BOOT, ISP/ISN, CDC) not shared with TI's earlier buck-boost devices like TPS630xx or TPS638xx families. PCB layout must be designed specifically for this part.
TPS552872QWRYQRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 21-PowerVFQFN
- 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):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 4A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 21-VQFN-HR (3x5)
TPS552872QWRYQRQ1 FAQ
1.How can I place an order for TPS552872QWRYQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS552872QWRYQRQ1 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 TPS552872QWRYQRQ1 reliable?
The price and inventory of TPS552872QWRYQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS552872QWRYQRQ1 is usually 5 days.
3.What payment methods are accepted for TPS552872QWRYQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS552872QWRYQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS552872QWRYQRQ1?
TPS552872QWRYQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS552872QWRYQRQ1 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 TPS552872QWRYQRQ1?
For technical support, including TPS552872QWRYQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS552872QWRYQRQ1 requirements.
6.How does Aetrix verify that TPS552872QWRYQRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS552872QWRYQRQ1 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 TPS552872QWRYQRQ1 meets industry standards.
7.What is the process for return or replacement of TPS552872QWRYQRQ1?
All TPS552872QWRYQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS552872QWRYQRQ1, 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 TPS552872QWRYQRQ1 part is unused and in its original packaging.
Return procedure for TPS552872QWRYQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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