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Texas Instruments UCD74106RGMR
- Part No.:
- UCD74106RGMR
- Manufacturer:
- Texas Instruments
- Package:
- 13-VFQFN Exposed Pad
- Datasheet:
-
UCD74106RGMR.pdf
- Description:
- IC REG BUCK 6A 13VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
UCD74106RGMR from Texas Instruments is a monolithic synchronous-buck power stage IC integrating high-side and low-side NMOS drivers, gate drive supply (VGG), current sense amplifier, thermal monitoring, and fault protection. It delivers up to 6 A output current, supports 4.5–18 V input voltage, operates up to 2 MHz, and targets digitally controlled point-of-load converters in telecom and server applications.
For engineers reviewing the UCD74106RGMR datasheet, UCD74106RGMR pinout, UCD74106RGMR application, or UCD74106RGMR equivalent, key selection considerations include its integrated 6.25-V regulated VGG supply, ±5% current sense accuracy via IMON, thermal shutdown at 155°C, and configurable fault reset modes using FLTRST.
Technical Context
The UCD74106RGMR implements a synchronous buck topology with independent PWM and SRE control logic enabling optimized dead-time management and cross-conduction prevention. Its internal VGG regulator (6.25 V, ±0.55 V) powers both high- and low-side gates, while the BST boot capacitor supports high-side driver operation.
Current sensing uses an integrated precision element with 4.32 µA/A gain and 22.1 µA zero-load offset on IMON, enabling bidirectional current reporting. Thermal protection includes a 10 mV/°C TMON output and latch-off shutdown at 155°C with 30°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 6 A continuous - supports compact point-of-load regulation for processors and ASICs. |
| Input Voltage Range | 4.5 V to 18 V (internally regulated VGG); down to 2.2 V with external bias - enables wide-input industrial and telecom supplies. |
| Switching Frequency | DC to 2 MHz - allows small magnetics and fast transient response in space-constrained designs. |
| Current Sense Accuracy | ±5% over temperature - ensures reliable over-current protection and precise load monitoring via IMON. |
| Thermal Shutdown Threshold | 155°C with 30°C hysteresis - prevents die damage during overload or poor thermal design. |
| VGG Supply | Internally regulated 6.25 V (±0.55 V) - provides stable gate drive for optimal RDS(on) utilization of integrated FETs. |
| Fault Flag Logic | Open-drain FLT output asserted on over-current, over-temperature, or UVLO - enables direct interfacing with TI's UCD9xxx controllers. |
Pinout & Package
UCD74106RGMR is housed in a thermally enhanced 13-pin QFN package (RGM) with exposed thermal pad. Pin 7 (PGND) and Pin 13 (VIN) are power-ground and main input terminals; Pin 6 (SW) is the switching node connecting to the inductor and low-side FET drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | Boot capacitor connection | Provides floating supply for high-side driver; requires 0.22 µF ceramic cap to SW. |
| PWM | High-side control input | 3.3/5-V logic-compatible Schmitt-trigger input controlling high-side turn-on and low-side timing in sync mode. |
| SRE | Synchronous rectifier enable | Digital input selecting synchronous rectification (SRE = high) or diode emulation (SRE = low). |
| FLT | Fault flag output | Open-drain 3.3-V signal latched high on over-current, over-temperature, or UVLO faults. |
| IMON | Current monitor output | Current-source output (4.32 µA/A) with 22.1 µA pedestal - enables bidirectional current sensing with 22.6 kΩ to AGND. |
| TMON | Temperature monitor output | Analog voltage (10 mV/°C, 0.75 V offset at 25°C) used for thermal telemetry or closed-loop derating. |
| VGG | Gate drive supply | Input/output pin for internal 6.25-V regulator or external bias; bypassed with ≥4.7 µF ceramic to PGND. |
| FLTRST | Fault reset configuration | Selects one of three FLT-clear protocols (HiZ PWM, low PWM+SRE, or single PWM pulse) via pin state. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual NMOS drivers | Eliminates discrete gate drivers and level shifters - reduces BOM count and layout complexity in POL modules. |
| On-chip VGG regulator | Delivers stable 6.25-V gate drive from VIN (4.5–14 V), improving MOSFET enhancement and efficiency vs. external bias solutions. |
| Programmable fault reset | Three FLTRST-configurable handshake modes ensure compatibility with TI UCD91xx/UCD92xx and analog controllers. |
| Precision current sense | ±5% accuracy with bidirectional capability (via IMON pedestal) enables accurate load-line tracking and phase-current balancing in multiphase systems. |
| Thermal telemetry | Linear TMON output (10 mV/°C) allows real-time junction temperature monitoring without external sensors. |
Applications
| Server VRM Power Stage | Telecom DC/DC Module |
|---|---|
Use Scenario: Provides core voltage regulation for multi-core CPUs and FPGAs in 1U rack servers with strict size and thermal constraints. IC Role / Device Role / Timing Role: Synchronous-buck power stage delivering up to 6 A at 1.2 V with digital controller interface (UCD9222) via PWM/SRE/FLT signals. Use Value: Integrated drivers and current sense reduce footprint by >30% vs. discrete solutions while maintaining ±5% current accuracy for dynamic load-line compliance. | Use Scenario: Powers baseband processing units in 4G/LTE remote radio heads requiring high efficiency across 4.5–18 V input range. IC Role / Device Role / Timing Role: Primary POL converter operating at 1 MHz with thermal telemetry (TMON) feeding back to system supervisor MCU. Use Value: 2-MHz capability enables <10 mm² inductor area; TMON output allows predictive thermal throttling before shutdown occurs. |
| Notebook GPU Core Supply | Industrial PLC I/O Module |
Use Scenario: Supplies variable-voltage GPU cores in ultrabooks where EMI and board space are critical. IC Role / Device Role / Timing Role: Synchronous-buck stage controlled by embedded PMIC; IMON feeds current data to system power manager for battery life optimization. Use Value: Bidirectional current sensing (via IMON pedestal) detects regenerative braking events during GPU clock scaling, improving energy recovery accuracy. | Use Scenario: Powers isolated I/O channel circuitry in programmable logic controllers operating in extended temperature environments (−40°C to 125°C). IC Role / Device Role / Timing Role: Robust 6-A POL stage with thermal shutdown (155°C) and UVLO (3.8 V) ensuring safe operation under brownout or ambient heating. Use Value: Guaranteed operation to 125°C junction temperature and 30°C thermal hysteresis prevent nuisance shutdowns in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous-buck power stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5116PWPR | External MOSFET controller (no integrated FETs/drivers); requires separate high-side gate driver and current sense amp. | Used in higher-power (>15 A), adjustable-frequency designs where thermal management is distributed across discrete components. | Choose LM5116PWPR when designing >10 A supplies with custom FET selection and layout flexibility. |
| TPS53632GRTAR | Three-phase controller with integrated drivers; supports up to 60 A total with phase interleaving; lacks standalone IMON/TMON telemetry outputs. | Targeted at high-current CPU/GPU VRMs where multiphase current sharing and digital PMBus interface are required. | Choose TPS53632GRTAR for multi-phase server VRMs needing PMBus telemetry and phase shedding - not a drop-in replacement. |
Compared with LM5116PWPR, UCD74106RGMR reduces component count and layout risk via monolithic integration but trades off maximum current scalability. Against TPS53632GRTAR, it offers simpler single-phase implementation and dedicated analog telemetry (IMON/TMON), yet lacks multiphase coordination and digital interface.
Availability
UCD74106RGMR is available at Aetrix Electronics and suitable for server VRMs, telecom DC/DC modules, notebook GPU supplies, and industrial PLC I/O modules requiring stable component supply, long-lifecycle support, and guaranteed parametric performance across −40°C to 125°C.
Supply support for UCD74106RGMR 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 company specializing in analog, embedded processing, and power management technologies, with leadership in high-efficiency power conversion and digital power control ICs.
The UCD74106RGMR belongs to TI's UCD7xxx family of integrated power stages, designed specifically for seamless interoperability with Fusion Digital Power controllers (UCD91xx/UCD92xx) in high-density, digitally managed point-of-load applications.
FAQ
What is the absolute maximum input voltage rating for UCD74106RGMR?
The absolute maximum VIN rating for UCD74106RGMR is 20 V DC, as specified in the Absolute Maximum Ratings table. Exceeding this voltage may cause permanent damage. The recommended operating range is 4.5 V to 18 V for internally regulated VGG operation, or down to 2.2 V with external gate bias. Always observe the 20-V limit during transient conditions such as load dump or hot-swap events.
How does the UCD74106RGMR implement current sensing, and what is its accuracy?
The UCD74106RGMR uses an integrated current sense element with a precision amplifier delivering a current-source output on IMON. Its gain is 4.32 µA/A (typical) with ±5% total accuracy over temperature and line/load conditions. A 22.6-kΩ resistor to AGND converts IMON to a voltage, and the 22.1-µA zero-load pedestal enables detection of both sourcing and sinking current - critical for dynamic load-line and regenerative scenarios in the UCD74106RGMR.
Can UCD74106RGMR operate without an external BST capacitor?
No - UCD74106RGMR requires a 0.22-µF ceramic capacitor between BST and SW pins to generate the floating supply for the high-side driver. Omitting this capacitor prevents proper high-side FET turn-on and will result in no output regulation. The BST capacitor must be placed close to the device with low-inductance routing, as specified in the Layout Guidelines section of the UCD74106RGMR datasheet.
What thermal protection features does UCD74106RGMR provide?
UCD74106RGMR includes die-level thermal shutdown at 155°C (typical) with 30°C hysteresis, plus analog thermal telemetry via the TMON pin (10 mV/°C, 0.75 V offset at 25°C). When temperature exceeds threshold, FLT asserts, both FETs turn off, and SW goes high-impedance. Normal operation resumes only after die cools below 125°C and FLT is cleared per the selected FLTRST protocol - a safety-critical behavior confirmed in characterization testing of the UCD74106RGMR.
Is UCD74106RGMR pin-compatible with other devices in the UCD7xxx family?
No - UCD74106RGMR has a unique 13-pin RGM QFN footprint and pinout. While functionally related to UCD74107 (which adds phase-interleaving support), it is not pin-compatible. Substituting UCD74106RGMR with UCD74107RGMR or UCD74105RGMR requires PCB redesign due to differences in pin assignment, thermal pad configuration, and signal routing - verified against TI's official package drawings and ordering information tables for each part number.
UCD74106RGMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 13-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- -
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- 6A
- Frequency - Switching:
- Up to 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 13-VQFN (3x3)
UCD74106RGMR FAQ
1.How can I place an order for UCD74106RGMR through Aetrix?
Please submit a Request for Quotation (RFQ) for UCD74106RGMR 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 UCD74106RGMR reliable?
The price and inventory of UCD74106RGMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCD74106RGMR is usually 5 days.
3.What payment methods are accepted for UCD74106RGMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCD74106RGMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCD74106RGMR?
UCD74106RGMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCD74106RGMR 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 UCD74106RGMR?
For technical support, including UCD74106RGMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCD74106RGMR requirements.
6.How does Aetrix verify that UCD74106RGMR is sourced from the original manufacturer or authorized distributors?
All UCD74106RGMR 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 UCD74106RGMR meets industry standards.
7.What is the process for return or replacement of UCD74106RGMR?
All UCD74106RGMR units undergo pre-shipment inspection (PSI). If there is an issue with UCD74106RGMR, 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 UCD74106RGMR part is unused and in its original packaging.
Return procedure for UCD74106RGMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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