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Texas Instruments TPS61093DSKR
- Part No.:
- TPS61093DSKR
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
TPS61093DSKR.pdf
- Description:
- IC REG BOOST ADJ 1.5A 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:9,370
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Product details
Overview
TPS61093DSKR from Texas Instruments is a fixed-frequency, current-mode boost converter IC with integrated 20-V/1.1-A power switch, input/output isolation FET, and power diode. It operates from 1.6 V to 6 V input, delivers up to 17 V output (e.g., 15 V @ 50 mA), achieves up to 88% efficiency, and features programmable soft start, overload/overvoltage protection, and load discharge on shutdown - used in portable medical and OLED power supplies.
For engineers reviewing the TPS61093DSKR datasheet, TPS61093DSKR pinout, TPS61093DSKR application, or TPS61093DSKR equivalent, key selection criteria include its 1.2-MHz switching frequency, 0.5-V feedback reference, 2.5 mm × 2.5 mm WSON-10 package with thermal pad, integrated isolation FET for leakage control, and compatibility with single Li-ion or dual alkaline battery inputs.
Technical Context
The TPS61093DSKR implements constant-frequency current-mode PWM control with built-in slope compensation to prevent subharmonic oscillation. Its functional block includes an error amplifier comparing FB voltage to a 0.5-V internal reference, a 1.2-MHz oscillator, and dual gate drivers controlling both the main N-channel switch (RDS(ON) = 0.4 Ω typ.) and the output-side isolation FET (RDS(ON) = 4 Ω typ. at VO = 3.5 V).
It supports two operational configurations: standard mode (load connected to OUT pin) enabling input/output isolation during shutdown and overload events, and high-efficiency mode (VO and OUT shorted) bypassing the isolation FET - at the cost of losing isolation and overload protection. Startup behavior is controlled via the SS pin using a 5-μA internal bias current charging an external RC network.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.6 V to 6 V - powers directly from 2× alkaline, 1× Li-ion, or regulated 3.3/5-V rails. |
| Output Voltage Range | Up to 17 V - programmable via FB resistor divider; typical 15-V output at 50 mA shown in reference design. |
| Switching Frequency | 1.2 MHz (typ.) - enables compact magnetics and low-profile ceramic capacitors; fixed to simplify EMI filtering. |
| Feedback Reference | 0.5 V ±1% - sets output voltage accuracy; determines regulation point for closed-loop control. |
| Peak Switch Current | 1.1 A (typ.) - limits inductor peak current; defines maximum deliverable output power under CCM. |
| Isolation FET RDS(ON) | 4 Ω (max. at VO = 3.5 V) - introduces ~200 mW loss at 50 mA; enables <1-μA shutdown leakage when active. |
| Shutdown Current | <1 μA - achieved by pulling EN low for ≥1 ms; critical for battery-powered devices requiring ultra-low standby drain. |
| Soft-Start Control | RC network on SS pin - 5-μA internal current charges capacitor; controls output ramp rate to limit inrush. |
Pinout & Package
TPS61093DSKR is housed in a thermally enhanced 2.5 mm × 2.5 mm × 0.8 mm WSON-10 package with exposed thermal pad (soldered to PCB ground plane). The 10-pin layout supports high-density layout and efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal ground reference | Primary return path for all internal circuits; must be low-impedance connection to PCB ground plane. |
| VIN (Pin 2) | Main power input | Accepts 1.6–6 V supply; feeds internal regulators and power stage; UVLO triggers at 1.55 V. |
| CP1 / CP2 (Pins 3, 4) | Flying capacitor terminals | Connect external 10-nF ceramic capacitor to enable internal charge pump for gate drive. |
| EN (Pin 5) | Enable control input | Active-high logic; ≥1-ms low pulse forces shutdown with <1-μA quiescent current. |
| SS (Pin 6) | Soft-start timing node | Internal 5-μA current charges external RC; sets output voltage ramp time to limit inrush. |
| FB (Pin 7) | Voltage feedback input | Compares divided output voltage to 0.5-V internal reference; determines regulation setpoint. |
| OUT (Pin 8) | Isolated output node | Load connection point when isolation FET is active; disconnects from VIN during shutdown. |
| SW (Pin 9) | Power switch node | Connects to inductor; carries high di/dt switching current; requires tight loop layout. |
| VO (Pin 10) | Boost converter output | Direct output of power stage; connects to load only when isolation FET is bypassed (no protection). |
| Thermal Pad | Case ground and thermal path | Must be soldered to PCB ground plane with thermal vias; lowers RθJA to 49.2°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated isolation FET | Disconnects OUT from VIN during shutdown and overload - reduces leakage to <1 μA and prevents fault propagation. |
| Programmable soft start | RC network on SS pin sets output ramp time - avoids inrush current into large output capacitors. |
| Load discharge path | Internal diodes discharge output capacitor to <4.3 V within milliseconds of shutdown - protects downstream circuitry. |
| Overvoltage protection | 19-V OVP threshold on VO pin with 0.6-V hysteresis - disables switch and opens isolation FET to clamp overvoltage. |
| Current-mode control | Fixed 1.2-MHz PWM with slope compensation - ensures stable operation across wide input/output ranges without external compensation. |
| Low-input capability | 1.6-V minimum VIN - supports operation down to end-of-life voltage of two alkaline cells or single Li-ion cell. |
Applications
| Glucose Meter Power Supply | OLED Display Bias |
|---|---|
Use Scenario: Portable handheld glucose meter requiring stable 15-V bias for electrochemical sensor interface and LCD backlight, powered by two AA alkaline batteries. IC Role / Device Role / Timing Role: Primary boost regulator providing isolated 15-V output with fast transient response and low shutdown leakage. Use Value: Enables >500-hour battery life via <1-μA shutdown current and maintains sensor accuracy with 88% efficiency at 50 mA load. | Use Scenario: Small-form-factor OLED display in wearables needing clean, regulated 12–15-V anode supply from 3.3-V system rail. IC Role / Device Role / Timing Role: High-frequency boost converter delivering ripple-free output with integrated soft start to prevent display flicker during power-up. Use Value: Eliminates need for external isolation switch and discrete diode - reduces BOM count and PCB area by 30% vs. discrete solution. |
| Single-Cell Li-ion Boost | Industrial Sensor Transmitter |
Use Scenario: Wireless sensor node powered by 3.6-V Li-ion cell, requiring 12-V output for analog front-end amplification and RF transmission. IC Role / Device Role / Timing Role: Input/output-isolated DC-DC converter ensuring safe shutdown state and preventing reverse current flow into depleted battery. Use Value: Maintains 12-V regulation down to 2.5-V battery voltage while limiting peak switch current to 1.1 A - avoids inductor saturation. | Use Scenario: Loop-powered 4–20-mA transmitter with auxiliary 15-V rail needed for precision op-amps and ADC reference. IC Role / Device Role / Timing Role: Secondary boost stage deriving isolated high-voltage rail from 24-V loop supply, with OVP and thermal shutdown for field reliability. Use Value: Overvoltage protection clamps VO at 19 V and opens isolation FET - prevents damage to sensitive analog components during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610981DSER | Same WSON-10 package, 1.2-MHz frequency, but adds LDO output (1.8 V/300 mA); lower 0.7-V min input; no isolation FET. | Lacks input/output isolation and load discharge; suited for non-critical, low-voltage auxiliary rails - not for safety-isolated loads. | Select when dual-rail (boost + LDO) required and isolation is unnecessary; avoid where shutdown leakage or overload disconnection is mandatory. |
| MAX17222ELT+T | 1.2-MHz boost with 0.5-V FB, 1.8–5.5-V input, but no integrated isolation FET or load discharge; 0.6-μA shutdown current. | Higher efficiency in bypass mode but no isolation path; lacks OVP hysteresis and thermal shutdown with hysteresis. | Prefer for ultra-low-IQ designs where isolation is omitted; verify external protection needed for OVP and overload scenarios. |
Compared with TPS61093DSKR, the TPS610981DSER trades isolation and discharge capability for integrated LDO functionality, while the MAX17222ELT+T offers lower quiescent current but requires external components to replicate isolation and protection - making TPS61093DSKR uniquely suited for battery-powered medical and industrial systems demanding fail-safe shutdown behavior.
Availability
TPS61093DSKR is available at Aetrix Electronics and suitable for glucose meters, OLED display bias supplies, and single-cell Li-ion boost applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS61093DSKR 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-reliability power conversion solutions.
The TPS61093DSKR belongs to TI's low-input, high-integration boost converter product line - designed specifically for space-constrained, battery-operated medical, portable, and industrial equipment requiring robust protection and ultra-low shutdown current.
FAQ
What is the minimum input voltage supported by the TPS61093DSKR?
The TPS61093DSKR supports a minimum input voltage of 1.6 V, enabling operation from two depleted alkaline cells or a single Li-ion cell down to end-of-life voltage. Its undervoltage lockout (UVLO) threshold is 1.55 V with 50-mV hysteresis, ensuring reliable startup and shutdown behavior across battery discharge curves. This specification is confirmed in Section 6.3 of the SLVS992D datasheet.
How does the isolation FET in the TPS61093DSKR improve system safety?
The isolation FET in the TPS61093DSKR disconnects the OUT pin from VIN during shutdown and overload conditions, reducing leakage current to less than 1 μA and preventing fault propagation to upstream power sources. During overload, it opens within microseconds to protect both the IC and input supply - a feature absent in standard boost converters. This behavior is documented in Sections 3 and 7.3.2 of the TPS61093DSKR datasheet.
Can the TPS61093DSKR be used without the isolation FET for higher efficiency?
Yes - connecting the load directly to the VO pin (and shorting VO to OUT) bypasses the isolation FET, eliminating its 4-Ω conduction loss and improving efficiency by ~3–5% at medium loads. However, this configuration removes input/output isolation, disables overload protection, and allows output voltage to sag to ~VIN – 0.7 V during shutdown. This trade-off is explicitly described in Section 8.2.1.2.3 of the TPS61093DSKR datasheet.
What is the purpose of the SS pin on the TPS61093DSKR, and how is it configured?
The SS (soft-start) pin on the TPS61093DSKR controls output voltage ramp rate using an external RC network charged by an internal 5-μA current source. This limits inrush current into output capacitors during startup. For example, a 1-μF capacitor yields ~200-ms soft-start time. Discharging the SS pin via R3 before re-enabling ensures repeatable startup behavior - details are provided in Section 8.2.1.2.4 of the TPS61093DSKR datasheet.
Does the TPS61093DSKR include overvoltage protection, and how does it behave?
Yes - the TPS61093DSKR includes overvoltage protection (OVP) that triggers when the VO pin voltage exceeds 19 V (typ.), disabling the power switch and opening the isolation FET. Recovery occurs only after VO drops 0.6 V below the threshold (18.4 V), providing hysteresis to prevent chatter. This protection is independent of the FB loop and acts within nanoseconds, safeguarding downstream components - specified in Section 6.5 and Section 7.3.2 of the TPS61093DSKR datasheet.
TPS61093DSKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.6V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.6V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-SON (2.5x2.5)
TPS61093DSKR FAQ
1.How can I place an order for TPS61093DSKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61093DSKR 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 TPS61093DSKR reliable?
The price and inventory of TPS61093DSKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61093DSKR is usually 5 days.
3.What payment methods are accepted for TPS61093DSKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61093DSKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61093DSKR?
TPS61093DSKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61093DSKR 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 TPS61093DSKR?
For technical support, including TPS61093DSKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61093DSKR requirements.
6.How does Aetrix verify that TPS61093DSKR is sourced from the original manufacturer or authorized distributors?
All TPS61093DSKR 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 TPS61093DSKR meets industry standards.
7.What is the process for return or replacement of TPS61093DSKR?
All TPS61093DSKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61093DSKR, 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 TPS61093DSKR part is unused and in its original packaging.
Return procedure for TPS61093DSKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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