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Texas Instruments LM25101CMYX/NOPB
- Part No.:
- LM25101CMYX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LM25101CMYX/NOPB.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8MSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM25101CMYX/NOPB from Texas Instruments is a 1-A, 80-V half-bridge gate driver IC designed to independently control high-side and low-side N-channel MOSFETs in synchronous buck and half-bridge power stages. It delivers 1-A peak sourcing/sinking current per output, supports bootstrap supply voltages up to 100 V DC, features 25-ns typical propagation delay, and includes integrated UVLO on both VDD and HB–HS rails. It is used in 48-V server power supplies and solar DC-DC converters.
For engineers reviewing the LM25101CMYX/NOPB datasheet, LM25101CMYX/NOPB pinout, LM25101CMYX/NOPB application, or LM25101CMYX/NOPB equivalent, key selection criteria include its 1-A drive strength (C version), 8-pin MSOP PowerPAD package with exposed thermal pad, TTL-compatible HI/LI inputs, and independent high/low-side logic control for precise dead-time management in hard-switched topologies.
Technical Context
The LM25101CMYX/NOPB implements a robust level-shifting architecture to drive the high-side MOSFET referenced to the switching node (HS), enabling operation with up to 100-V bootstrap rail voltage. Its dual-output stage uses low-resistance CMOS drivers with matched propagation delays (≤10 ns mismatch) and fast edge rates (8 ns rise/fall into 1000-pF load).
UVLO circuitry independently monitors VDD (6.9-V rising threshold) and HB–HS (6.6-V rising threshold) to prevent shoot-through during under-voltage conditions. The device operates across –40°C to +125°C junction temperature and requires local decoupling of VDD and HB with low-ESR/ESL capacitors placed adjacent to the IC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 1 A per channel - sufficient to drive medium-power MOSFETs (e.g., QG ≤ 20 nC) at 500-kHz switching frequency without external buffers. |
| Bootstrap Voltage Range | Up to 100 V DC - enables use with high-input-voltage half-bridges (e.g., 48-V or 60-V bus systems) without external level-shifting circuitry. |
| Propagation Delay | 22–56 ns (typ. 25 ns) - ensures tight timing control in high-frequency synchronous rectification and minimizes dead-time uncertainty. |
| Delay Matching | ≤10 ns (typ. 4 ns) - critical for minimizing cross-conduction risk when HO and LO are driven with complementary signals. |
| UVLO Thresholds | VDD: 6.9 V (±0.5 V hysteresis); HB–HS: 6.6 V (±0.4 V hysteresis) - prevents erratic switching during startup or brownout in high-noise power environments. |
| Operating Temperature | –40°C to +125°C - supports industrial and telecom-grade thermal requirements without derating in compact layouts. |
| Supply Voltage (VDD) | 9–14 V - compatible with standard 12-V gate-drive rails and tolerant of transient dips during load transients. |
Pinout & Package
The LM25101CMYX/NOPB is packaged in an 8-pin MSOP PowerPAD (3 mm × 3 mm) with an exposed thermal pad soldered to PCB ground for enhanced thermal dissipation. Pin 1 is VDD; pins 2–8 follow standard TI MSOP PowerPAD pinout: HB, HO, HS, LI, LO, VSS, and NC (no connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Low-side gate drive supply input | Primary 9–14-V power rail for internal logic and low-side driver; must be locally decoupled to VSS with ≤1-µF low-ESR ceramic capacitor. |
| HB | High-side bootstrap rail input | Connects to positive terminal of bootstrap capacitor; supports up to 100-V differential relative to HS; internal diode charges capacitor during LO conduction. |
| HO | High-side gate driver output | Drives gate of high-side N-MOSFET; referenced to HS pin; output swing spans VHS to VHB; requires short, low-inductance trace to MOSFET gate. |
| HS | High-side source reference node | Connection point for bootstrap capacitor negative terminal and high-side MOSFET source; serves as return for HO output and level-shift reference. |
| LI | Low-side input control | TTL-compatible digital input (VIH = 2.3 V min, VIL = 1.3 V max); unused pins must be tied to VSS to prevent floating logic states. |
| LO | Low-side gate driver output | Drives gate of low-side N-MOSFET; referenced to VSS; output swing spans 0 V to VDD; layout must minimize loop inductance to reduce ringing. |
| VSS | Power ground return | Common ground reference for all signals and low-side driver; must be connected to solid ground plane beneath thermal pad. |
| NC | No connection | Unbonded pin; electrically isolated; no PCB trace or pad required. |
Key Features
| Feature | Design Value |
|---|---|
| Independent HI/LI logic inputs | Enables full control over HO/LO timing - supports non-overlapping, phase-shifted, or synchronous PWM schemes without external logic. |
| Integrated bootstrap diode | Reduces BOM count and layout area; forward voltage ≤0.85 V at 100 µA allows efficient charging of bootstrap capacitor in high-duty-cycle applications. |
| Matched propagation delays | ≤10 ns HO/LO delay mismatch ensures consistent dead-time implementation - eliminates need for external delay compensation networks. |
| Robust level shifter | Operates reliably at >50 V/ns HS slew rate - maintains clean HO transitions even during fast switching of high-voltage MOSFETs. |
| Thermal-enhanced PowerPAD | RθJB = 15.1°C/W - enables 1-A continuous drive capability in ambient temperatures up to +85°C without forced airflow or heatsinks. |
Applications
| Server PSU Half-Bridge | Solar DC-DC Converter |
|---|---|
Use Scenario: 48-V input, 12-V output half-bridge DC-DC converter in rack-mounted server power supply. IC Role / Device Role / Timing Role: Drives high-side and low-side CSD19534KCS MOSFETs in complementary mode with programmable dead time from controller. Use Value: 1-A drive strength ensures <500-ns MOSFET turn-on with 17-nC gate charge; 100-V bootstrap tolerance accommodates 48-V bus transients. |
Use Scenario: MPPT-enabled solar microinverter DC-DC stage stepping up panel voltage (30–60 V) to 400-V bus. IC Role / Device Role / Timing Role: Controls high-side/low-side switches in two-switch forward topology with active clamp snubber. Use Value: Independent HI/LI inputs allow precise timing of clamp switch relative to main bridge; UVLO on HB–HS prevents misfiring during startup voltage ramp. |
| Industrial Motor Drive | Telecom POL Module |
Use Scenario: 24-V BLDC motor controller using half-bridge inverter stage for fan or pump actuation. IC Role / Device Role / Timing Role: Gate driver for N-channel MOSFET half-bridge; receives PWM from MCU with TTL-level outputs. Use Value: TTL-compatible inputs eliminate need for level shifters; 25-ns propagation delay supports >200-kHz PWM for smooth torque control. |
Use Scenario: Point-of-load regulator in 5G base station RF card converting 12-V intermediate bus to 3.3-V/20-A core supply. IC Role / Device Role / Timing Role: Synchronous buck gate driver for high-efficiency, high-density POL with ceramic output capacitors. Use Value: Fast 8-ns rise/fall times into 1000-pF load minimize switching losses; thermal pad enables compact 12-mm² layout footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM25101AMYX/NOPB | 3-A peak output current vs 1-A; identical pinout and UVLO thresholds; higher drive strength increases gate charge delivery speed. | Better suited for high-QG MOSFETs (>30 nC) or higher-frequency operation (>1 MHz); draws higher quiescent current (0.4 mA vs 0.25 mA). | Select when driving larger MOSFETs or requiring faster switching; verify thermal margin with RθJB = 54.1°C/W in same MSOP package. |
| UCC27201ADRMR | 2-A peak current; 5-V to 16-V VDD range; no integrated bootstrap diode; separate HO/LO enable pins; 12-pin WSON package. | Requires external bootstrap diode and additional layout area; offers enable control and tighter propagation delay matching (2 ns typ.). | Choose when system-level flexibility (enable, wider VDD range) outweighs BOM simplification; not pin-compatible - redesign required. |
Compared with LM25101CMYX/NOPB, the LM25101AMYX/NOPB provides higher drive strength in identical packaging but increases power dissipation, while UCC27201ADRMR trades integration for greater control granularity and wider supply range - neither is drop-in replaceable without layout or firmware changes.
Availability
LM25101CMYX/NOPB is available at Aetrix Electronics and suitable for server power supplies, solar DC-DC converters, industrial motor drives, telecom POL modules, and 48-V embedded power systems requiring stable component supply and long-term industrial lifecycle support.
Supply support for LM25101CMYX/NOPB 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 decades of expertise in high-reliability power conversion solutions.
The LM25101 product line delivers scalable half-bridge gate drivers (1-A to 3-A versions) optimized for efficiency-critical, high-voltage DC-DC conversion in datacenter, renewable energy, and industrial automation applications.
FAQ
What is the maximum bootstrap voltage supported by the LM25101CMYX/NOPB?
The LM25101CMYX/NOPB supports a maximum bootstrap supply voltage of 100 V DC, measured as the voltage difference between HB and HS pins. This rating allows reliable operation in high-input-voltage topologies such as 48-V server PSUs and solar DC-DC converters where the HS node swings near the input rail. Exceeding this voltage risks permanent damage to the internal bootstrap diode and level shifter.
Does the LM25101CMYX/NOPB require an external bootstrap diode?
No, the LM25101CMYX/NOPB integrates a bootstrap diode with forward voltage ≤0.85 V at 100 µA. This eliminates the need for an external diode in most designs, reducing BOM count and PCB area. However, in high-frequency or high-duty-cycle applications where diode recovery losses dominate, an external ultrafast diode may be added in parallel to improve efficiency.
How does the LM25101CMYX/NOPB handle undervoltage lockout conditions?
The LM25101CMYX/NOPB implements independent UVLO circuits on both VDD (6.9-V rising threshold) and HB–HS (6.6-V rising threshold). If either rail falls below its threshold, the corresponding output (LO for VDD, HO for HB–HS) is forced low. Hysteresis (0.5 V for VDD, 0.4 V for HB–HS) prevents oscillation during marginal supply conditions.
What package type is used for the LM25101CMYX/NOPB?
The LM25101CMYX/NOPB uses the 8-pin MSOP PowerPAD package (3 mm × 3 mm) with an exposed thermal pad on the bottom. This package provides low thermal resistance (RθJB = 15.1°C/W) and requires soldering the thermal pad directly to a PCB ground plane for optimal heat dissipation and electrical performance.
Can the LM25101CMYX/NOPB drive both high-side and low-side MOSFETs simultaneously?
Yes, the LM25101CMYX/NOPB is specifically designed to drive both high-side and low-side N-channel MOSFETs in half-bridge or synchronous buck configurations. Its independent HI and LI inputs allow full control of HO and LO outputs, enabling complementary, phase-shifted, or independently timed switching - provided appropriate dead time is enforced externally to prevent shoot-through.
LM25101CMYX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 9V ~ 14V
- Logic Voltage - VIL, VIH:
- 2.3V, -
- Current - Peak Output (Source, Sink):
- 1A, 1A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 100 V
- Rise / Fall Time (Typ):
- 990ns, 715ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
LM25101CMYX/NOPB FAQ
1.How can I place an order for LM25101CMYX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM25101CMYX/NOPB 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 LM25101CMYX/NOPB reliable?
The price and inventory of LM25101CMYX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM25101CMYX/NOPB is usually 5 days.
3.What payment methods are accepted for LM25101CMYX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM25101CMYX/NOPB transactions.
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4.How is shipping managed for LM25101CMYX/NOPB?
LM25101CMYX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM25101CMYX/NOPB 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 LM25101CMYX/NOPB?
For technical support, including LM25101CMYX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM25101CMYX/NOPB requirements.
6.How does Aetrix verify that LM25101CMYX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM25101CMYX/NOPB 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 LM25101CMYX/NOPB meets industry standards.
7.What is the process for return or replacement of LM25101CMYX/NOPB?
All LM25101CMYX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM25101CMYX/NOPB, 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 LM25101CMYX/NOPB part is unused and in its original packaging.
Return procedure for LM25101CMYX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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