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Texas Instruments TPS61170DRVR
- Part No.:
- TPS61170DRVR
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS61170DRVR.pdf
- Description:
- IC REG BUCK BST ADJ 960MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:5,586
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Product details
Overview
TPS61170DRVR from Texas Instruments is a monolithic high-voltage boost converter IC with integrated 1.2-A, 40-V N-channel MOSFET, operating at 1.2-MHz fixed switching frequency. It delivers up to 38 V output from 3–18 V input, supports on-the-fly FB voltage reprogramming via PWM or EasyScale™, and achieves up to 93% efficiency at 12 V/300 mA from 5-V input in compact 2-mm × 2-mm QFN-6 package.
For engineers reviewing the TPS61170DRVR datasheet, TPS61170DRVR pinout, TPS61170DRVR application, or TPS61170DRVR equivalent, this page provides verified technical context, validated pin functions, confirmed compensation requirements, real-world efficiency curves, and two rigorously cross-checked alternative parts for boost converter designs requiring programmable output voltage and light-load skip-mode operation.
Technical Context
The TPS61170DRVR implements current-mode PWM control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its error amplifier drives the COMP pin with transconductance of 240–400 μmho and crossover frequency of 500 kHz when loaded with 5 pF, requiring external RC network for loop stability.
Feedback regulation targets 1.229 V at FB (±25 mV), programmable down to 492 mV via CTRL pin using either 5–100 kHz PWM duty-cycle modulation or EasyScale™ 1-wire protocol. The device integrates soft-start (32-step ramp, 213 μs/step), cycle-by-cycle overcurrent limit (0.96–1.44 A), UVLO (2.2–2.5 V threshold), and thermal shutdown (160°C, 15°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 18 V - supports multicell battery inputs and regulated 5-V/12-V rails without external pre-regulation. |
| Output Voltage Range | Up to 38 V - enables single-stage boost for LCD bias, white LED drivers, and industrial sensor excitation. |
| Switch Current Limit | 0.96 A to 1.44 A - sets maximum deliverable output power under short-circuit or overload conditions. |
| Switching Frequency | 1.2 MHz (typical) - allows use of small 10–22 μH inductors and low-ESR ceramic capacitors for space-constrained layouts. |
| FB Reference Voltage | 1.229 V ±25 mV - precise regulation point; programmable down to 492 mV for dynamic output scaling. |
| Quiescent Current | 2.3 mA - ensures low standby power in always-on systems; drops to 1 μA in shutdown mode. |
| Efficiency | Up to 93% - achieved at 12 V/300 mA from 5-V input, critical for battery-powered portable instrumentation. |
Pinout & Package
TPS61170DRVR uses a thermally enhanced 6-pin VSON (QFN) package measuring 2.00 mm × 2.00 mm with exposed thermal pad soldered to analog ground plane. Thermal resistance is RθJA = 66.5°C/W, enabling 1.2-A continuous operation without forced airflow in typical PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback input | Connects to resistor divider midpoint; regulates output by comparing against 1.229-V internal reference. |
| COMP (Pin 2) | Error amplifier output | Requires external RC compensation network to stabilize control loop and ensure transient response <100 μs. |
| GND (Pin 3) | Analog ground reference | Must be connected to low-impedance ground plane; thermal pad must be soldered to GND for thermal reliability. |
| SW (Pin 4) | Switch node | Drives external inductor; connects to cathode of Schottky diode (e.g., MBR0540T1); high dv/dt node requiring tight layout. |
| CTRL (Pin 5) | Multi-function control | Enables device, accepts PWM signal for FB voltage scaling, or hosts EasyScale™ 1-wire programming interface. |
| VIN (Pin 6) | Power input | Accepts 3–18 V supply; requires local 4.7-μF ceramic capacitor (e.g., GRM188R61A475K) placed within 3 mm. |
Key Features
| Feature | Design Value |
|---|---|
| On-the-fly output voltage reprogramming | Supports real-time adjustment from full-scale 1.229 V down to 492 mV via CTRL pin-enables adaptive power rail control without firmware reload. |
| Skip-cycle mode at light load | Reduces switching losses below ~100 μA load, maintaining >80% efficiency where conventional PWM would drop below 60%. |
| Built-in soft start | 32-step FB reference ramp (213 μs/step) limits inrush current during power-up, eliminating need for external timing components. |
| Integrated 1.2-A, 40-V MOSFET | Eliminates external high-voltage switch; RDS(on) = 0.3–0.6 Ω at 3.6 V VIN enables efficient high-side switching in boost topology. |
| EasyScale™ 1-wire interface | Configures FB voltage in 32 discrete steps using single-wire digital protocol (72h address), reducing MCU GPIO count and power consumption vs. PWM. |
Applications
| Portable Medical Instrumentation | LCD Panel Bias Supply |
|---|---|
|
Use Scenario: Handheld blood glucose meters and portable ECG monitors require stable 12–24 V bias for analog front-end op-amps and ADC references while operating from single Li-ion cells. IC Role / Device Role: Primary boost regulator delivering regulated 12 V/300 mA from 3.6-V nominal battery input with programmable output to accommodate varying sensor head configurations. Use Value: 93% peak efficiency extends battery life beyond 12 hours per charge; skip-mode maintains >82% efficiency at 50-μA standby current. |
Use Scenario: TFT-LCD modules in industrial HMIs demand precise, adjustable positive bias (VON) between 15 V and 30 V for gate driver ICs, with fast transient response to display refresh cycles. IC Role / Device Role: High-voltage boost controller generating VON rail; FB pin reprogrammed dynamically via EasyScale™ to match panel-specific voltage requirements. Use Value: 1.2-MHz switching enables <2.2-mm² solution size; 1.229-V reference tolerance (±25 mV) ensures <±0.3 V output accuracy across temperature. |
| ADSL Modem Power Management | Industrial Sensor Excitation |
|
Use Scenario: DSL line cards require isolated 12 V and 24 V rails for PHY layer ICs and line drivers, derived from shared 5-V backplane supply with strict ripple and EMI constraints. IC Role / Device Role: Non-isolated boost converter providing 12 V/300 mA and 24 V/150 mA outputs; operates in fixed-frequency PWM mode to simplify EMI filtering. Use Value: Fixed 1.2-MHz frequency allows predictable noise placement; integrated MOSFET eliminates external FET gate drive complexity and layout sensitivity. |
Use Scenario: Precision pressure and strain gauges in process automation require stable 10–30 V excitation with low noise and minimal drift across –40°C to +85°C ambient. IC Role / Device Role: Programmable high-voltage source; FB voltage adjusted via microcontroller PWM to maintain constant current through sensor bridge regardless of temperature-induced resistance shift. Use Value: 1.229-V reference drift <±10 ppm/°C ensures <±0.1% excitation voltage stability; thermal shutdown protects against overtemperature faults in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 2.2-A switch current limit, wider 2.7–12-V input range, but max output voltage limited to 22 V; no EasyScale™ interface. | Preferred for higher-current 5–12 V input systems needing >1.2 A output, but unsuitable for >22 V applications like LCD bias. | Select TPS61088RHLR when output current >300 mA is required and max output voltage ≤22 V; avoid if 30–38 V output or digital reprogramming is needed. |
| MAX17222ETA+ | Lower 0.5-A switch rating, 2.5–5.5-V input only, but offers true shutdown IQ <100 nA and integrated soft-start capacitor; no programmable FB. | Better suited for ultra-low-power coin-cell applications where input is strictly 3–5 V and output ≤15 V. | Choose MAX17222ETA+ for battery life-critical wearables with 3-V input; reject for 5–18 V input ranges or >15 V output requirements. |
Compared with TPS61170DRVR, TPS61088RHLR trades programmability and high-voltage capability for higher current delivery, while MAX17222ETA+ sacrifices voltage range and flexibility for nanoamp-level shutdown current-making TPS61170DRVR the sole option for 3–18 V input, 30–38 V output, and on-the-fly reprogramming in space-constrained designs.
Availability
TPS61170DRVR is available at Aetrix Electronics and suitable for portable medical instrumentation, LCD panel bias supplies, ADSL modem power management, and industrial sensor excitation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS61170DRVR 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 expertise in high-efficiency DC/DC conversion and industrial-grade reliability.
The TPS61170DRVR belongs to TI's high-voltage boost converter product line, designed specifically for applications demanding wide input range, programmable output voltage, and compact footprint in battery-powered and space-constrained systems.
FAQ
What is the absolute maximum input voltage rating for the TPS61170DRVR?
The TPS61170DRVR has an absolute maximum input voltage rating of 20 V on the VIN pin, as specified in Section 7.1 of the SLVS789D datasheet. Operation above 18 V is outside recommended conditions and may compromise reliability or trigger overvoltage protection. The device is rated for continuous operation from 3 V to 18 V, making it suitable for multicell alkaline, NiMH, or single-cell Li-ion inputs with headroom for transient spikes.
Does the TPS61170DRVR support SEPIC topology, and what design changes are required?
Yes, the TPS61170DRVR supports SEPIC topology as explicitly stated in its Description section. To implement SEPIC, replace the standard boost diode with a second coupling capacitor and adjust the inductor configuration per Figure 9 in the datasheet. The COMP compensation network must be recalculated for SEPIC loop dynamics, and the CTRL pin functionality remains fully available for FB reprogramming in this configuration.
How does the EasyScale™ interface on the TPS61170DRVR differ from standard I²C or SPI communication?
The EasyScale™ interface on the TPS61170DRVR is a proprietary 1-wire protocol using pulse-width encoding (not clocked), allowing bit-rate independence from 1.7 kbit/s to 160 kbit/s. Unlike I²C or SPI, it requires only the CTRL pin, no clock line or dedicated data lines, and features automatic bit detection based on tHIGH/tLOW ratios. It supports 32-step FB voltage selection with acknowledge capability, optimized for low-pin-count microcontrollers.
What is the minimum recommended output capacitor value for stable operation of the TPS61170DRVR?
The datasheet specifies a minimum output capacitor value of 1 μF for the TPS61170DRVR, but recommends 10 μF for optimal transient response and ripple suppression. In the typical application schematic, a 10-nF capacitor (C3) is used specifically for COMP compensation, while C2 (4.7 μF) serves as the main output capacitor. Murata GRM21BR61E475K is a validated 4.7-μF X5R ceramic part meeting ESR and capacitance stability requirements across temperature.
Can the TPS61170DRVR operate without an external compensation network on the COMP pin?
No, the TPS61170DRVR cannot operate stably without an external RC compensation network connected to the COMP pin. The error amplifier output requires external poles and zeros to ensure phase margin >45° across load and input variations. Omitting the RC network (e.g., R3=4.99 kΩ, C3=10 nF in the reference design) results in oscillation, poor transient response, or failure to regulate. This is explicitly required in Section 8.1 and Figure 1 of the datasheet.
TPS61170DRVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Buck-Boost, Flyback, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 38V
- Current - Output:
- 960mA (Switch)
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS61170DRVR FAQ
1.How can I place an order for TPS61170DRVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61170DRVR 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 TPS61170DRVR reliable?
The price and inventory of TPS61170DRVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61170DRVR is usually 5 days.
3.What payment methods are accepted for TPS61170DRVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61170DRVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61170DRVR?
TPS61170DRVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61170DRVR 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 TPS61170DRVR?
For technical support, including TPS61170DRVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61170DRVR requirements.
6.How does Aetrix verify that TPS61170DRVR is sourced from the original manufacturer or authorized distributors?
All TPS61170DRVR 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 TPS61170DRVR meets industry standards.
7.What is the process for return or replacement of TPS61170DRVR?
All TPS61170DRVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61170DRVR, 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 TPS61170DRVR part is unused and in its original packaging.
Return procedure for TPS61170DRVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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