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Texas Instruments TPS630702RNMR
- Part No.:
- TPS630702RNMR
- Manufacturer:
- Texas Instruments
- Package:
- 15-PowerVFQFN
- Datasheet:
-
TPS630702RNMR.pdf
- Description:
- IC REG BUCK BOOST ADJ 2A 15VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,690
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Product details
Overview
TPS630702RNMR from Texas Instruments is a 2-V to 16-V synchronous buck-boost DC/DC converter with adjustable output (2.5 V to 9 V), 2-A continuous output current in both buck and boost modes, 95% peak efficiency, and integrated output discharge function. It enables single-rail power management in portable industrial and medical devices where input voltage may dip below or rise above the required system rail.
For engineers reviewing the TPS630702RNMR datasheet, TPS630702RNMR pinout, TPS630702RNMR application, or TPS630702RNMR equivalent, key selection considerations include its output discharge capability (ROD = 200 Ω), ±1% PWM-mode feedback accuracy, 2.4-MHz fixed-frequency operation with synchronization support, and seamless automatic buck-to-boost transition without external mode control.
Technical Context
The TPS630702RNMR implements average current-mode control using four internal N-channel MOSFETs-two for buck and two for boost paths-with dynamic mode selection based on VIN/VOUT ratio. Its control architecture ensures minimum RMS inductor current and eliminates simultaneous switching of all four FETs, reducing conduction and switching losses across wide input/output ranges.
It features dual-loop regulation: a fast inner current loop reconstructing inductor current via high-side buck FET sensing, and an outer voltage loop comparing FB voltage to 0.8-V reference. The PS/SYNC pin supports both PFM/PWM mode selection and external clock synchronization (2.1–2.8 MHz), while VSEL/FB2 enable real-time dual-output-voltage switching via resistor divider reconfiguration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.0 V to 16 V - supports single-cell Li-ion (2.7–4.2 V), dual-cell (5.4–8.4 V), and 9–12 V industrial rails without intermediate stages. |
| Output Voltage Range | 2.5 V to 9 V - programmable via external resistor divider on FB/FB2; VSEL enables dynamic switching between two setpoints. |
| Max Output Current | 2 A continuous - sustained in both buck (VIN ≥ 4.5 V) and boost (VIN ≤ VOUT) configurations per TI SLVSC58B Rev B. |
| Peak Efficiency | 95% - achieved at mid-load under typical 5-V output conditions; enabled by synchronous rectification and low RDS(on) FETs (buck HS: 50–80 mΩ). |
| Feedback Accuracy | ±1% in PWM mode - ensures tight regulation for sensitive analog or MCU supply rails; ±3%/−1% in PFM mode. |
| Output Discharge | Enabled (ROD = 200 Ω) - actively discharges VOUT during shutdown to prevent residual voltage hold-up in safety-critical systems. |
| Switching Frequency | 2.4 MHz nominal - fixed-frequency PWM operation reduces EMI filtering burden; synchronizable from 2.1–2.8 MHz. |
| Quiescent Current | 54 μA typical (PFM mode) - extends battery life in always-on sensor nodes and portable medical monitors. |
Pinout & Package
TPS630702RNMR is housed in a thermally enhanced 13-pin VQFN package (2.5 mm × 3 mm, 0.5-mm pitch) with exposed thermal pad. Pin 13 is PGND, and pins 12/13 are paralleled for VIN to minimize trace inductance and improve thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 14) | Enable control input | Logic-level interface with precise 0.7–0.83 V rising threshold; supports RC-delayed power-up sequencing and user-defined UVLO. |
| FB (Pin 5) | Feedback input | Connects to resistor divider output; senses regulated 0.8-V reference; leakage <100 nA preserves accuracy in high-impedance dividers. |
| VSEL (Pin 15) | Voltage select control | Logic input that pulls FB2 to GND when high, enabling second output voltage setpoint via R1/R2/R3 network. |
| FB2 (Pin 6) | Secondary feedback node | Provides programmable scaling path; ROD = 25–100 Ω when VSEL = high; high-impedance when VSEL = low. |
| PG (Pin 2) | Power good open-drain output | Indicates VOUT within ±5.5% of target (94.5–98.5% threshold); requires external pull-up; sinks 1 mA max. |
| L1/L2 (Pins 11/9) | Inductor connections | High-current paths for buck (L1) and boost (L2) inductors; layout symmetry minimizes loop area and EMI. |
| VIN (Pins 12,13) | Main power input | Parallel-input design lowers impedance and improves transient response; rated for 2–16 V with 20-V abs max. |
| VOUT (Pins 7,8) | Regulated output | Dual-pin configuration reduces IR drop and enhances current sharing; supports up to 470 µF total output capacitance. |
| PGND (Pin 10) | Power ground return | Separate from logic GND (Pin 4); must be connected directly to thermal pad and input/output capacitor grounds. |
| GND (Pin 4) | Logic ground reference | Reference for EN, PS/SYNC, VSEL, FB, FB2; kept isolated from PGND to avoid noise coupling into control loops. |
| PS/SYNC (Pin 1) | Mode control / sync input | Configures PWM-only (low), auto PFM/PWM (high), or external clock sync (2.1–2.8 MHz square wave). |
| VAUX (Pin 3) | Auxiliary bias regulator output | Internal LDO output (max 7 V); supplies gate drivers; requires 100-nF ceramic capacitor to GND; no external load. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost transition | Seamless mode switching without external control or output glitch; maintains regulation as VIN crosses VOUT. |
| Output discharge (TPS630702 only) | Integrated 200-Ω discharge path actively drains VOUT during shutdown - eliminates need for external MOSFET + resistor. |
| Precision enable with UVLO | Adjustable undervoltage lockout via resistor divider on EN; 100-mV hysteresis prevents chatter near threshold. |
| Power good monitoring | Open-drain PG asserts high-impedance when VOUT reaches 94.5–98.5% of target; supports system reset sequencing. |
| Soft-start with current limiting | 400–850 μs ramp time (buck/boost); limits inrush to ~1 A during startup to protect input capacitors and source. |
| Thermal & overvoltage protection | 160°C thermal shutdown with 20°C hysteresis; input/output OVP disables switching and forces PFM to prevent back-feeding. |
Applications
| Portable Medical Monitors | Dual-Cell Li-Ion Power Systems |
|---|---|
|
Use Scenario: Battery-powered ECG or pulse oximeter requiring stable 3.3-V MCU rail and 5-V analog front-end from variable 6–8.4-V dual-Li+ input. IC Role / Device Role / Timing Role: Primary buck-boost regulator delivering regulated output while automatically adapting to battery discharge curve. Use Value: Eliminates need for separate buck and boost ICs; output discharge ensures safe shutdown per IEC 62304 clause 5.1.5. |
Use Scenario: Handheld test meter powered by two series Li-ion cells (6–8.4 V) supplying 5-V USB host port and 3.3-V microcontroller. IC Role / Device Role / Timing Role: Single-chip power manager maintaining constant output despite wide input swing and load transients. Use Value: 95% efficiency at 1-A load extends runtime >20% vs. legacy solutions; 2.4-MHz switching allows compact 1.5-µH inductors. |
| Industrial Smart Sensors | Ultra-Mobile PCs & MID Devices |
|
Use Scenario: Wireless vibration sensor node operating from primary 3.6-V Li-SOCl₂ battery, requiring 3.3-V digital rail and 2.5-V ADC reference. IC Role / Device Role / Timing Role: Wide-input buck-boost converter enabling direct battery connection without pre-regulator stage. Use Value: 54-μA quiescent current enables >10-year shelf life; VSEL pin allows firmware-controlled rail switching for low-power sleep states. |
Use Scenario: Fanless tablet with 7.4-V dual-cell battery powering 5-V USB-C PD sink, 3.3-V SoC, and 1.8-V memory interface. IC Role / Device Role / Timing Role: High-density power solution supporting multiple regulated rails via cascaded or parallel configurations. Use Value: 2.5 mm × 3 mm QFN footprint saves >30% board area vs. discrete buck+boost; PG signal coordinates system boot sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS630701RNMR | Fixed 5-V output; no VSEL/FB2; output discharge disabled. | Suitable for cost-sensitive 5-V-only systems without dynamic voltage scaling. | Select when output voltage is static and discharge is unnecessary; lower BOM count but no flexibility. |
| MAX77818EWJ+T | 3.2-V to 16-V input; 0.5-V to 5.5-V output; 3-A max; I²C programmable; no integrated discharge. | Requires external discharge circuitry; supports digital voltage margining and telemetry. | Choose for systems needing I²C configuration, higher current, or telemetry - but adds firmware complexity and layout overhead. |
Compared with TPS630702RNMR, TPS630701RNMR lacks output discharge and voltage scaling, making it simpler but less flexible for safety-critical or multi-rail designs; MAX77818EWJ+T offers programmability and higher current but requires software integration and external discharge components.
Availability
TPS630702RNMR is available at Aetrix Electronics and suitable for portable medical devices, industrial smart sensors, dual-cell Li-ion power systems, and ultra-mobile computing platforms requiring stable component supply with full lifecycle support.
Supply support for TPS630702RNMR 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 automotive-grade reliability.
The TPS6307x family was designed specifically for battery-powered applications where input voltage varies across or beyond the output rail - targeting portable instrumentation, medical wearables, and industrial IoT edge nodes demanding high efficiency, small size, and robust protection.
FAQ
What is the key functional difference between TPS630702RNMR and TPS63070RNMR?
The TPS630702RNMR integrates output discharge functionality (ROD = 200 Ω), whereas the base TPS63070RNMR does not. This means TPS630702RNMR actively discharges the output capacitor during shutdown, critical for safety compliance in medical and industrial systems. Both share identical pinout, package, input/output ranges, and efficiency specs.
Does TPS630702RNMR support true 2-V start-up?
No - TPS630702RNMR requires ≥3.0 V at VIN to initiate start-up when VOUT < 3.0 V, per Section 7.3 of SLVSC58B Rev B. Once running, it sustains operation down to 2.0 V input. For true 2-V cold-start capability, consider TI's TPS63802 or TPS6305x families.
How does the VSEL pin change the output voltage in TPS630702RNMR?
When VSEL is pulled high, it connects FB2 to GND internally, altering the feedback divider ratio and raising VOUT to a second preset level. When VSEL is low or floating, FB2 is high-impedance and VOUT defaults to the primary setpoint defined by R1/R2. Resistor values must be selected per TI Technote SLVAE62.
What is the maximum recommended output capacitance for TPS630702RNMR?
The datasheet specifies 15–470 µF total output capacitance (COUT), with 47 µF as the nominal value. Using ≥100 µF improves load transient response but requires verifying soft-start timing and inrush current limits. Ceramic + polymer hybrid stacks are recommended to balance ESR and ripple handling.
Can TPS630702RNMR synchronize to an external clock while in power-save mode?
No - synchronization is only active when PS/SYNC is driven with a valid external clock signal (2.1–2.8 MHz square wave). In power-save (PFM) mode, PS/SYNC must be held high; applying a clock forces immediate transition to fixed-frequency PWM operation regardless of load current.
Is the thermal pad of TPS630702RNMR electrically connected to any internal node?
Yes - the exposed thermal pad (Pin 13) is internally connected to PGND. It must be soldered to a dedicated PCB thermal plane tied to the PGND net, not to GND or VIN. Proper thermal pad connection is mandatory to achieve the specified RθJA = 63°C/W and prevent thermal shutdown under 2-A loads.
TPS630702RNMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 15-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):
- 2V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 9V
- Current - Output:
- 2A
- Frequency - Switching:
- 2.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-VQFN-HR (3x2.5)
TPS630702RNMR FAQ
1.How can I place an order for TPS630702RNMR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS630702RNMR 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 TPS630702RNMR reliable?
The price and inventory of TPS630702RNMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS630702RNMR is usually 5 days.
3.What payment methods are accepted for TPS630702RNMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS630702RNMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS630702RNMR?
TPS630702RNMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS630702RNMR 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 TPS630702RNMR?
For technical support, including TPS630702RNMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS630702RNMR requirements.
6.How does Aetrix verify that TPS630702RNMR is sourced from the original manufacturer or authorized distributors?
All TPS630702RNMR 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 TPS630702RNMR meets industry standards.
7.What is the process for return or replacement of TPS630702RNMR?
All TPS630702RNMR units undergo pre-shipment inspection (PSI). If there is an issue with TPS630702RNMR, 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 TPS630702RNMR part is unused and in its original packaging.
Return procedure for TPS630702RNMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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