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Texas Instruments TPS551892QWRYQRQ1
- Part No.:
- TPS551892QWRYQRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 21-PowerVFQFN
- Datasheet:
-
TPS551892QWRYQRQ1.pdf
- Description:
- IC REG BUCK BOOST PROG 8A 21VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
TPS551892QWRYQRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck-boost DC/DC converter integrating four MOSFETs, supporting 3.0V–27V input and 0.8V–22V programmable output, delivering up to 8A average inductor current and 60W output power from 12V input. It operates across buck, buck-boost, and boost modes with seamless transitions and is used in ADAS power rails requiring wide VIN/VOUT flexibility and high reliability.
For engineers reviewing the TPS551892QWRYQRQ1 datasheet, TPS551892QWRYQRQ1 pinout, TPS551892QWRYQRQ1 application, or TPS551892QWRYQRQ1 equivalent, key selection criteria include its ±1% reference accuracy, 200kHz–2.2MHz programmable switching frequency, integrated cable droop compensation (CDC), 8A average current limit, and AEC-Q100 qualification for under-hood automotive environments.
Technical Context
The TPS551892QWRYQRQ1 employs average current-mode control with internal error amplifier transconductance of 190 µA/V and soft-start time of 2.5–5 ms. Its dual-mode operation-FPWM at medium/heavy load and configurable PFM or forced PWM at light load-enables high efficiency across full load range, including 96% at 12VIN/20VOUT/3A.
It integrates four MOSFETs (buck-side HS/LS: 14 mΩ/22 mΩ; boost-side HS/LS: 11 mΩ/11 mΩ), supports external clock synchronization via DITH/SYNC pin, and implements spread-spectrum dithering (±7%) for EMI reduction. Protection includes hiccup-mode short-circuit response (76 ms off-time), thermal shutdown at 175°C, and output overvoltage protection at 22.5–24.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 27 V (supports 12 V battery, 24 V systems, and adapter inputs; absolute max 42 V) |
| Output Voltage Range | 0.8 V to 22 V (programmable via FB resistor divider; ±1% reference voltage accuracy) |
| Max Output Current | 8 A average inductor current limit (enables 60 W from 12 V input, 45 W from 9 V input) |
| Switching Frequency | 200 kHz to 2.2 MHz (set by external resistor on FSW pin; supports synchronization and spread spectrum) |
| Operating Temp Range | –40°C to +125°C ambient (AEC-Q100 Grade 1 qualified; junction rated to 150°C) |
| Package | VQFN-HR (RYQ), 3.0 mm × 5.0 mm, 21-pin leadless HotRod™ package (low-inductance, high thermal performance) |
| Efficiency | 96% at VIN = 12 V, VOUT = 20 V, IOUT = 3 A (FPWM mode; maintains >90% across wide load range) |
Pinout & Package
VQFN-HR (RYQ) 21-pin leadless HotRod™ package, 3.0 mm × 5.0 mm body size, exposed thermal pad, RoHS-compliant. Designed for low parasitic inductance and enhanced thermal dissipation in automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO | Enable & programmable UVLO input | Logic-high enable (>1.15 V); UVLO threshold settable via resistor divider (1.23 V ref, 10 mV hysteresis) |
| MODE | Light-load operating mode select | Pull high for forced PWM; pull low for auto PFM; floating not allowed |
| PG | Power-good open-drain output | Asserts high-Z when VOUT ≥ 95% of setpoint; pulls low when VOUT ≤ 90% |
| CC | Constant-current indication output | Open-drain flag active low when output current limit is triggered |
| DITH/SYNC | Dithering control & sync clock input | Capacitor sets dither frequency; external clock synchronizes switching (min pulse width 50 ns) |
| FSW | Frequency setting input | Resistor-to-AGND sets fSW from 200 kHz to 2.2 MHz (±10% tolerance) |
| VIN | Main power input | Accepts 3–27 V; absolute max 42 V; powers internal LDO or VCC depending on VIN/VOUT relationship |
| SW1 / SW2 | Buck & boost switching nodes | Connect to external inductor; drive internal high-side/low-side MOSFETs (buck: 14/22 mΩ; boost: 11/11 mΩ) |
| VOUT | Regulated output power rail | Delivers 0.8–22 V; supports cable droop compensation via CDC pin and ISP/ISN current sensing |
| ISP / ISN | Differential current sense inputs | Monitor output current; 50 mV regulation threshold enables accurate ±5% current monitoring |
| FB | Feedback input | Connects to resistor divider midpoint; references 1.2 V internal bandgap (±1% over temp) |
| COMP | Error amplifier output | Connects to AGND via RC network; transconductance 190 µA/V for loop compensation |
| CDC | Cable droop compensation output | Sinks current proportional to ISP–ISN voltage; enables dynamic VOUT boost to offset IR drop |
| EXTVCC | External VCC select | Pull low to use external 5 V supply; float or pull high to use internal LDO (5.2 V typical) |
| BOOT1 / BOOT2 | High-side gate drivers | 0.1 µF ceramic capacitor required between BOOT1–SW1 and BOOT2–SW2 for gate drive |
| PGND / AGND | Power & signal ground | Separate grounds minimize noise coupling; PGND handles high di/dt return paths |
| VCC | Internal regulator output | Supplies 5.05–5.45 V @ 50 mA; requires ≥4.7 µF ceramic capacitor to AGND |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with full electrical characterization and reliability testing |
| Integrated four-MOSFET buck-boost topology | Eliminates external switches and reduces solution size; enables seamless mode transitions without output disruption |
| Programmable cable droop compensation (CDC) | Compensates for IR drop in long cables using ISP/ISN sensing and CDC pin feedback to FB node |
| Configurable light-load operation | Selectable PFM (high efficiency at light loads) or forced PWM (low output ripple and fixed frequency) |
| Comprehensive fault protection | Includes OVP (22.5–24.5 V), hiccup-mode short-circuit (76 ms off-time), thermal shutdown (175°C), and cycle-by-cycle peak current limiting |
| EMI mitigation suite | Supports optional spread spectrum (±7%), external clock synchronization, and HotRod™ QFN package for low EMI emissions |
Applications
| ADAS Power Rail | Automotive Infotainment |
|---|---|
|
Use Scenario: Supplies stable 5 V or 12 V rail to radar ECU, camera modules, or sensor fusion units where input voltage varies widely (e.g., cold crank 3.5 V to load dump 36 V). IC Role / Device Role / Timing Role: Primary buck-boost regulator managing battery-derived input to deliver regulated output with <1% reference accuracy and fast transient response. Use Value: Maintains uninterrupted operation during engine start-stop cycles and load dump events without external supervision or sequencing. |
Use Scenario: Powers display backlight, audio DSP, and touch controller in digital instrument clusters where input is 12 V battery but output must be 3.3 V or adjustable 5–12 V. IC Role / Device Role / Timing Role: Single-chip DC/DC solution replacing discrete buck + boost stages; supports dynamic VOUT adjustment for brightness or audio headroom scaling. Use Value: Reduces BOM count by 4+ components and PCB area by >30% versus dual-regulator approaches while meeting AEC-Q100 requirements. |
| Wireless Charging Transmitter | Telematics Control Unit (TCU) |
|
Use Scenario: Generates 15–20 V output from 12 V vehicle battery to drive resonant wireless power transmitter coils with variable load demands. IC Role / Device Role / Timing Role: High-efficiency buck-boost stage enabling constant-power delivery across varying coil impedance and alignment conditions. Use Value: Delivers 60 W from 12 V input with 96% efficiency at 3 A, minimizing thermal stress in confined dashboard enclosures. |
Use Scenario: Provides isolated 3.3 V and 5 V rails for cellular modem, GNSS receiver, and CAN interface in connected vehicle gateways operating across temperature extremes. IC Role / Device Role / Timing Role: Primary power management IC with integrated current monitoring (±5% accuracy) for system-level power diagnostics and fault logging. Use Value: Enables real-time current telemetry via ISP/ISN pins and supports safe failover during brownout or overload via hiccup-mode protection. |
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 | Single-phase synchronous buck only (no boost capability); 3–36 V input, 1–20 V output; 8 A continuous; no integrated current sense or CDC | Limited to step-down-only use cases; cannot regulate above VIN; lacks cable compensation and dual-mode operation | Choose when output is always ≤ input voltage and simpler topology suffices; lower cost but less flexible |
| TPS63802-Q1 | 4-A buck-boost with 2.5–16 V input/output; 2.2-MHz max fSW; no programmable UVLO, no CDC, no hiccup-mode OCP | Lower current rating; no automotive-grade current monitoring or cable compensation; limited thermal margin at 8 A | Use for lower-power infotainment peripherals where 4 A suffices and CDC is unnecessary; smaller footprint but reduced feature set |
Compared with LM61480-Q1 and TPS63802-Q1, the TPS551892QWRYQRQ1 uniquely combines 8-A buck-boost capability, AEC-Q100 Grade 1 qualification, integrated cable droop compensation, and hiccup-mode short-circuit protection-making it the only option for high-power, wide-input automotive rails requiring both step-up and step-down with precision load regulation.
Availability
TPS551892QWRYQRQ1 is available at Aetrix Electronics and suitable for advanced driver-assistance systems (ADAS), automotive infotainment and cluster displays, and wireless charging transmitters requiring stable component supply, AEC-Q100 compliance, and high-reliability power conversion.
Supply support for TPS551892QWRYQRQ1 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 automotive ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.
The TPS551892QWRYQRQ1 belongs to TI's automotive-grade buck-boost converter product line, designed specifically for next-generation vehicle power architectures requiring wide-input, high-efficiency, and functional-safety-aware DC/DC conversion.
FAQ
What is the maximum output power capability of the TPS551892QWRYQRQ1?
The TPS551892QWRYQRQ1 delivers up to 60 W from a 12 V input (at 20 VOUT/3 A) and 45 W from a 9 V input, enabled by its 8 A average inductor current limit and high-efficiency architecture. Actual output power depends on thermal design, PCB layout, and ambient conditions-but the device sustains full 8 A output with proper heatsinking and airflow per TI's recommended 4-layer board guidelines.
Does the TPS551892QWRYQRQ1 support output voltage compensation for cable voltage drop?
Yes, the TPS551892QWRYQRQ1 includes dedicated cable droop compensation (CDC) functionality. By connecting a resistor between the CDC pin and AGND, the device injects compensating current into the FB node proportional to sensed output current (via ISP/ISN), dynamically raising VOUT to offset IR losses in long interconnects-critical for rear-seat displays or roof-mounted sensors.
How is the switching frequency programmed on the TPS551892QWRYQRQ1?
The switching frequency of the TPS551892QWRYQRQ1 is set using a single resistor connected between the FSW pin and AGND. The value ranges from ~100 kΩ (200 kHz) to ~8.4 kΩ (2.2 MHz), with linear scaling confirmed in Figure 5-11 of the datasheet. Frequency tolerance is ±10%, and the pin accepts external clock signals for synchronization.
What protection features does the TPS551892QWRYQRQ1 include?
The TPS551892QWRYQRQ1 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, and average inductor current limiting (7–9 A). All protections are fully autonomous and require no external circuitry to activate.
Is the TPS551892QWRYQRQ1 pin-compatible with other TI buck-boost converters?
No, the TPS551892QWRYQRQ1 uses a unique 21-pin VQFN-HR (RYQ) package with specific pin assignments-including dual BOOT, ISP/ISN, CDC, and EXTVCC-not found in earlier TI buck-boost devices like TPS630xx or TPS638xx families. Layout and schematic integration require the official RYQ footprint and routing guidelines.
TPS551892QWRYQRQ1 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:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 27V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 8A
- 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)
TPS551892QWRYQRQ1 FAQ
1.How can I place an order for TPS551892QWRYQRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS551892QWRYQRQ1 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 TPS551892QWRYQRQ1 reliable?
The price and inventory of TPS551892QWRYQRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS551892QWRYQRQ1 is usually 5 days.
3.What payment methods are accepted for TPS551892QWRYQRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS551892QWRYQRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS551892QWRYQRQ1?
TPS551892QWRYQRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS551892QWRYQRQ1 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 TPS551892QWRYQRQ1?
For technical support, including TPS551892QWRYQRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS551892QWRYQRQ1 requirements.
6.How does Aetrix verify that TPS551892QWRYQRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS551892QWRYQRQ1 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 TPS551892QWRYQRQ1 meets industry standards.
7.What is the process for return or replacement of TPS551892QWRYQRQ1?
All TPS551892QWRYQRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS551892QWRYQRQ1, 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 TPS551892QWRYQRQ1 part is unused and in its original packaging.
Return procedure for TPS551892QWRYQRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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