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Texas Instruments TPS62170QDSGRQ1
- Part No.:
- TPS62170QDSGRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS62170QDSGRQ1.pdf
- Description:
- IC REG BUCK ADJ 500MA 8WSON
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS62170QDSGRQ1 from Texas Instruments is an automotive-grade synchronous step-down DC-DC converter with DCS-Control™ topology, 3 V to 17 V input range, 0.5-A continuous output current, and adjustable 0.9 V to 6 V output voltage - used in ADAS camera power rails requiring high efficiency and fast transient response.
For engineers reviewing the TPS62170QDSGRQ1 datasheet, TPS62170QDSGRQ1 pinout, TPS62170QDSGRQ1 application, or TPS62170QDSGRQ1 equivalent, key selection criteria include its AEC-Q100 qualification (–40°C to 125°C), 2.25-MHz switching frequency, 17-µA quiescent current in Power Save Mode, and integrated power-good (PG) open-drain output for rail sequencing.
Technical Context
The TPS62170QDSGRQ1 implements DCS-Control™, a hybrid regulation architecture combining voltage-mode feedback with direct output-voltage sensing to achieve stable regulation and sub-100-ns load-step response. It operates in PWM mode at ~2.25 MHz under medium/heavy loads and transitions seamlessly into Power Save Mode at light loads, reducing switching frequency linearly while maintaining >85% efficiency down to 1 mA.
Its functional safety capability includes documentation support for ISO 26262 ASIL-B system integration. Protection features include undervoltage lockout (2.7 V ±180 mV hysteresis), thermal shutdown (160°C ±20°C hysteresis), short-circuit protection via peak-current limiting (1.05 A typ), and 100% duty-cycle operation for ultra-low dropout applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports Li-ion battery packs and 12-V automotive rails without external pre-regulation. |
| Output Current | Up to 0.5 A continuous - sufficient for powering image sensors, microcontrollers, and interface ICs in ADAS modules. |
| Switching Frequency | Typ. 2.25 MHz - enables use of compact 2.2-µH inductors and reduces output ripple without increasing ESR requirements. |
| Quiescent Current | 17 µA in Power Save Mode - extends battery runtime in always-on vehicle subsystems like parking cameras. |
| Feedback Reference | 0.8 V internal reference - sets output via external resistor divider; enables precise 0.9–6 V adjustment with ±3% accuracy in PWM mode. |
| Power-Good Output | Open-drain PG with 92–98% VOUT threshold - provides reliable rail-valid signal for sequenced startup of downstream logic and analog circuitry. |
| Thermal Shutdown | 160°C junction temperature with 20°C hysteresis - protects against sustained overload or poor PCB thermal design in enclosed ECUs. |
Pinout & Package
TPS62170QDSGRQ1 is housed in a thermally enhanced 2 mm × 2 mm WSON-8 package (DSG) with exposed thermal pad soldered to AGND for optimal heat dissipation in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (Pin 1) | Power ground return | Carries high-frequency switch-node return current; must be low-inductance connection to minimize EMI and voltage spikes. |
| VIN (Pin 2) | Main supply input | Accepts 3–17 V; requires local 10-µF ceramic decoupling close to pin to suppress input ripple and transients. |
| EN (Pin 3) | Enable control input | Active-high logic; internal 400-kΩ pulldown ensures safe default-off state; supports power-rail sequencing when driven by upstream regulator. |
| AGND (Pin 4) | Analog ground reference | Reference for FB, VOS, and internal error amplifier; must be star-connected to PGND at single point to avoid noise coupling. |
| FB (Pin 5) | Feedback voltage sense | Regulates output to 0.8 V; connects to resistive divider from VOUT to AGND; leakage <400 nA ensures minimal divider current error. |
| VOS (Pin 6) | Output voltage sense | Direct sampling of VOUT for DCS-Control loop; improves transient response and line/load regulation over standard FB-only architectures. |
| SW (Pin 7) | Switch node | Connects to inductor; carries high dv/dt square wave; requires tight layout with minimal trace area to reduce EMI and ringing. |
| PG (Pin 8) | Power-good indicator | Open-drain output; requires external pullup (e.g., to 3.3 V); sinks 2 mA max; goes high-impedance during UVLO, thermal shutdown, or EN = low. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Combines fast output-voltage sensing with internal compensation to deliver <10 µs load-step response and stable operation with low-ESR ceramic capacitors only. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C junction operation, HBM ±2 kV, CDM ±500 V - meets automotive electronics reliability requirements for body and ADAS domains. |
| Seamless Power Save Mode | Automatically transitions between PWM and PSM without output voltage glitch or audible noise; maintains >85% efficiency from 1 mA to 500 mA load. |
| 100% duty-cycle operation | Enables regulation down to VIN ≈ VOUT + (IOUT × RDS(on)_HS); extends battery life in low-VIN scenarios such as cold-cranking or depleted Li-ion cells. |
| Integrated protections | Includes undervoltage lockout (2.7 V), thermal shutdown (160°C), short-circuit current limiting (1.05 A typ), and soft-start (25 mV/µs ramp) - eliminates need for external fault management circuitry. |
Applications
| ADAS Camera Module | Powertrain Control Unit |
|---|---|
Use Scenario: Powers 5-MP CMOS image sensor and ISP in rear-view or surround-view camera systems. IC Role / Device Role / Timing Role: Primary 3.3-V/0.5-A POL converter delivering regulated rail with <1% output deviation during rapid LED flash pulses. Use Value: DCS-Control™ ensures <50-ns response to 100-mA load steps from sensor pixel readout, preventing image artifacts and frame drops. | Use Scenario: Supplies 1.2-V core voltage to automotive MCU (e.g., S32K series) in engine control module. IC Role / Device Role / Timing Role: Adjustable buck converter configured for 1.2 V output with PG signal synchronized to main 5-V rail startup sequence. Use Value: 17-µA quiescent current minimizes parasitic drain during key-off, supporting >1-year battery hold-up time per ISO 16750-2. |
| Body Control Module | Infotainment Head Unit |
Use Scenario: Generates 5-V rail for LIN transceivers, door-lock actuators, and ambient lighting drivers. IC Role / Device Role / Timing Role: Fixed or adjustable 5-V source with robust short-circuit tolerance during actuator stall events. Use Value: Integrated 1.05-A current limit and thermal shutdown prevent latch-up during wiring faults, eliminating need for external fuse or resettable PTC. | Use Scenario: Provides clean 1.8-V supply to audio codec and display interface ICs in dashboard cluster. IC Role / Device Role / Timing Role: Low-noise POL converter operating in forced-PWM or auto-PSM mode depending on audio playback vs. standby state. Use Value: 2.25-MHz switching frequency places fundamental noise above sensitive audio band (20 kHz), reducing need for ferrite beads or LC filters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62171QDSGRQ1 | Fixed 1.8-V output; identical package, pinout, and DCS-Control™ architecture; no external feedback resistors required. | Eliminates FB divider design effort but lacks output adjustability; suited for dedicated 1.8-V core rails. | Select when fixed 1.8 V matches system requirement and board space is constrained - no layout change needed. |
| TPS62172QDSGRQ1 | Fixed 3.3-V output; same thermal and electrical specs; shares all protection and sequencing features. | Optimized for I/O, USB PHY, or Ethernet PHY rails where 3.3 V is standard; simplifies BOM by removing R1/R2. | Choose for 3.3-V applications requiring drop-in compatibility and reduced external component count. |
Compared with TPS62170QDSGRQ1, the TPS62171QDSGRQ1 and TPS62172QDSGRQ1 offer identical automotive qualification, thermal performance, and protection features - but trade programmability for fixed-output simplicity, reducing design validation effort for standardized voltage rails.
Availability
TPS62170QDSGRQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, powertrain control units, and body electronics systems requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TPS62170QDSGRQ1 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 technologies with broad automotive, industrial, and communications solutions.
The TPS6217x-Q1 product line delivers high-efficiency, small-footprint DC-DC converters for automotive subsystems demanding AEC-Q100 reliability, functional safety readiness, and seamless light-load efficiency - especially in ADAS, body, and infotainment domains.
FAQ
What is the maximum input voltage rating for the TPS62170QDSGRQ1?
The TPS62170QDSGRQ1 has an absolute maximum input voltage rating of 20 V, but its recommended operating input voltage range is 3 V to 17 V. Operation beyond 17 V may trigger undervoltage lockout recovery or stress internal components; sustained use above 17 V is not advised. The device's UVLO threshold is 2.7 V (typical) with 180-mV hysteresis, ensuring reliable startup and shutdown across automotive battery transients.
Does the TPS62170QDSGRQ1 support pre-biased output startup?
Yes, the TPS62170QDSGRQ1 supports monotonic pre-biased output startup. During this mode, the low-side MOSFET remains off until the internal ramp voltage exceeds the pre-bias level, preventing reverse current flow and output voltage collapse. This behavior is confirmed in the datasheet's Soft Start section and is critical for hot-swap or multi-rail sequencing applications where downstream capacitors may retain charge.
How does the TPS62170QDSGRQ1 handle thermal overload conditions?
The TPS62170QDSGRQ1 monitors junction temperature with an internal sensor and enters thermal shutdown at 160°C (typical), turning off both high- and low-side FETs and placing the PG pin in high-impedance state. Recovery occurs after junction temperature falls by ~20°C hysteresis, followed by full soft-start sequence. Its WSON-8 package achieves 35.5°C/W junction-to-board thermal resistance, enabling reliable operation up to 125°C ambient with proper PCB copper pour.
Can the TPS62170QDSGRQ1 operate in 100% duty cycle mode, and what is the minimum input voltage for regulation?
Yes, the TPS62170QDSGRQ1 automatically enters 100% duty-cycle mode when VIN approaches VOUT, keeping the high-side FET continuously on. Minimum input for regulation depends on load: for example, at 0.5 A and 3.3 V output, VIN must exceed ~3.6 V (accounting for RDS(on)_HS and inductor DCR). Equation 3 in the datasheet provides exact calculation using measured RDS(on) and inductor resistance.
What are the key differences between the TPS62170QDSGRQ1 and the pin-compatible TPS62160-Q1?
The TPS62170QDSGRQ1 offers higher input voltage range (3–17 V vs. 3–6 V), improved light-load efficiency via enhanced Power Save Mode, and tighter output voltage accuracy (±3% vs. ±4%). Both share DCS-Control™ and WSON-8 packaging, but the TPS62170QDSGRQ1 adds functional safety documentation support and AEC-Q100 Grade 1 certification - making it suitable for next-generation automotive ADAS and powertrain systems where extended VIN range and safety compliance are mandatory.
TPS62170QDSGRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 500mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
TPS62170QDSGRQ1 FAQ
1.How can I place an order for TPS62170QDSGRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62170QDSGRQ1 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 TPS62170QDSGRQ1 reliable?
The price and inventory of TPS62170QDSGRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62170QDSGRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62170QDSGRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62170QDSGRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62170QDSGRQ1?
TPS62170QDSGRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62170QDSGRQ1 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 TPS62170QDSGRQ1?
For technical support, including TPS62170QDSGRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62170QDSGRQ1 requirements.
6.How does Aetrix verify that TPS62170QDSGRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62170QDSGRQ1 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 TPS62170QDSGRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62170QDSGRQ1?
All TPS62170QDSGRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62170QDSGRQ1, 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 TPS62170QDSGRQ1 part is unused and in its original packaging.
Return procedure for TPS62170QDSGRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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