My Inquiry
My Account
Texas Instruments LM25101ASD-1/NOPB
- Part No.:
- LM25101ASD-1/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
LM25101ASD-1/NOPB.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,567
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM25101ASD-1/NOPB from Texas Instruments is a 3-A, 80-V high-voltage 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 3-A peak sourcing/sinking current, supports bootstrap supply up to 100 V DC, achieves 25-ns typical propagation delay, and features TTL-compatible inputs for direct interface with PWM controllers - deployed in 48-V server power supplies and solar DC-DC converters.
For engineers reviewing the LM25101ASD-1/NOPB datasheet, LM25101ASD-1/NOPB pinout, LM25101ASD-1/NOPB application, or LM25101ASD-1/NOPB equivalent, key selection criteria include bootstrap voltage capability (up to 100 V), propagation delay matching (≤10 ns), undervoltage lockout thresholds on both VDD and HB rails, and compatibility with high-frequency switching (>500 kHz) in isolated gate-drive topologies.
Technical Context
The LM25101ASD-1/NOPB integrates a robust level shifter enabling clean, high-speed signal translation from logic-ground-referenced HI/LI inputs to the HS-referenced HO output, with ≤3 ns typical delay mismatch between HO and LO paths. Its internal bootstrap diode (VF = 0.85 V typ at 100 mA) eliminates need for external fast-recovery diodes in many designs.
Independent TTL-input control logic allows full four-quadrant switching state management (including shoot-through prevention via external logic), while dual UVLO circuits monitor VDD (6.9 V rising threshold) and HB–HS (6.6 V rising threshold) separately - disabling HO during bootstrap under-voltage without affecting LO operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 3 A sourcing/sinking - drives 1000-pF gate loads with 8-ns rise/fall times at 12-V supply. |
| Bootstrap Voltage Range | Up to 100 V DC - enables high-side operation in 48-V and 60-V bus systems with margin. |
| Propagation Delay | 22–56 ns (typ 25 ns) - supports >1-MHz switching with tight timing control. |
| Delay Matching | ≤10 ns max (typ 3 ns) - minimizes dead-time uncertainty in synchronous rectification. |
| UVLO Thresholds | VDD: 6.9 V (±0.5 V hysteresis); HB–HS: 6.6 V (±0.4 V hysteresis) - prevents erratic switching during brownout. |
| Input Logic Type | TTL-compatible - interfaces directly with 3.3-V or 5-V PWM controllers without level shifters. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and telecom power applications. |
Pinout & Package
LM25101ASD-1/NOPB is packaged in an 8-pin MSOP PowerPAD (3 mm × 3 mm) with exposed thermal pad soldered to PCB ground plane for enhanced thermal dissipation (RθJB = 15.1°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive gate drive supply rail | 12-V nominal input; powers low-side driver and logic; requires local 1-µF low-ESR decoupling to VSS. |
| HB | High-side bootstrap rail | Connects to positive terminal of bootstrap capacitor; referenced to HS; supports up to 100-V differential. |
| HO | High-side gate driver output | Drives high-side MOSFET gate; output referenced to HS pin; must route with minimal inductance. |
| HS | High-side MOSFET source node | Return path for bootstrap capacitor; connects to source of high-side N-MOSFET and negative capacitor terminal. |
| HI | High-side input control | TTL-level input (VIL ≤ 1.8 V, VIH ≥ 2.3 V); unused pin must be tied to VSS. |
| LI | Low-side input control | TTL-level input with same thresholds as HI; independent of HI for flexible phase control. |
| LO | Low-side gate driver output | Drives low-side MOSFET gate; referenced to VSS; complements HO in half-bridge switching. |
| VSS | Ground return | Logic and power ground reference; all signals referenced to this node; connect thermal pad here. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | Eliminates external fast-recovery diode in most designs; VF = 0.85 V @ 100 mA reduces BOM count and layout area. |
| Independent HI/LI control | Enables full four-state operation (HO/LO = H/L, L/H, H/H, L/L) for active-clamp, synchronous buck, and phase-shifted topologies. |
| Matched HO/LO propagation | ≤3 ns typical delay mismatch ensures precise dead-time control and minimizes shoot-through risk. |
| Dual-rail UVLO protection | Separate monitoring of VDD and HB–HS prevents high-side misfire during bootstrap charging failure. |
| Thermal-enhanced PowerPAD | Exposed pad lowers junction-to-board thermal resistance to 15.1°C/W - critical for sustained 3-A drive in compact layouts. |
Applications
| Motor-Controlled Drivers | Half and Full Bridge Power Converters |
|---|---|
Use Scenario: Driving N-channel MOSFET half-bridge in BLDC motor inverter stages for HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Gate driver providing independent HO/LO control with <10 ns delay matching to minimize commutation losses and EMI. Use Value: 3-A peak drive sustains fast gate charging of 17-nC MOSFETs at 500-kHz PWM, reducing conduction loss by 12% vs. 2-A drivers. |
Use Scenario: High-efficiency 48-V input to 12-V output full-bridge DC-DC converter in telecom rectifiers. IC Role / Device Role / Timing Role: Dual-channel gate driver enabling zero-voltage switching (ZVS) via precise HO/LO timing control and bootstrap stability at 100-V swing. Use Value: 100-V bootstrap capability supports 48-V bus with 2× safety margin; integrated diode cuts component count by one per channel. |
| Synchronous Buck Converters | Solar DC-DC and DC-AC Converters |
Use Scenario: Point-of-load regulator in server VRMs converting 12-V intermediate bus to CPU core voltage. IC Role / Device Role / Timing Role: High-side/low-side driver delivering 3-A gate current to minimize switching transition time and improve efficiency at 1-MHz operation. Use Value: 25-ns propagation delay enables stable loop response; TTL inputs interface directly with digital PWM controllers without level-shifting circuitry. |
Use Scenario: MPPT DC-DC stage in string inverters stepping up PV array voltage (30–60 V) to 400-V DC link. IC Role / Device Role / Timing Role: Robust gate driver operating across wide input range with UVLO hysteresis preventing erratic switching during partial shading events. Use Value: Dual UVLO (VDD and HB–HS) ensures reliable startup and fault recovery under variable irradiance; –40°C to +125°C rating suits outdoor deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5101AMX/NOPB | Higher 4-A peak current; wider 8–14-V VDD range; no integrated bootstrap diode. | Better suited for >20-A power stages; requires external bootstrap diode and tighter layout for noise immunity. | Select when higher gate current or extended VDD range is required; avoid if BOM simplification is priority. |
| UCC27211DRCR | 3-A drive; 120-V bootstrap rating; split outputs (HO/LO) with enable pin; no UVLO on HB rail. | Supports higher bus voltages (e.g., 96-V systems); lacks HB–HS UVLO - requires external monitoring for bootstrap integrity. | Choose for ultra-high-voltage bridges where HB UVLO is managed externally; verify bootstrap reliability in transient conditions. |
Compared with LM5101AMX/NOPB and UCC27211DRCR, LM25101ASD-1/NOPB uniquely combines integrated bootstrap diode, dual-rail UVLO, and 3-A drive in an MSOP PowerPAD package - optimizing for cost-sensitive, space-constrained 48-V industrial and solar applications where layout simplicity and fault resilience are critical.
Availability
LM25101ASD-1/NOPB is available at Aetrix Electronics and suitable for 48-V server power, solar DC-DC conversion, and motor-controlled drivers requiring stable component supply across multi-year production cycles.
Supply support for LM25101ASD-1/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 over 50 years of innovation in high-reliability power solutions.
The LM25101 product line delivers high-voltage gate drivers optimized for efficiency-critical DC-DC conversion in industrial, telecom, and renewable energy systems - emphasizing integration, thermal performance, and system-level robustness.
FAQ
What is the maximum bootstrap voltage supported by the LM25101ASD-1/NOPB?
The LM25101ASD-1/NOPB supports a maximum bootstrap supply voltage of 100 V DC, measured as the differential voltage between HB and HS pins. This enables reliable high-side gate drive in 48-V and 60-V bus applications with sufficient safety margin, as confirmed in Section 7.1 Absolute Maximum Ratings of the SNVS859C datasheet.
Does the LM25101ASD-1/NOPB require an external bootstrap diode?
No, the LM25101ASD-1/NOPB integrates a bootstrap diode with 0.85-V typical forward voltage at 100 mA, eliminating the need for an external fast-recovery diode in standard configurations. This is explicitly stated in the Features section and validated in Electrical Characteristics Table 7.5 (VDL and VDH parameters).
How does the LM25101ASD-1/NOPB handle undervoltage conditions on the bootstrap rail?
The LM25101ASD-1/NOPB implements dedicated HB–HS undervoltage lockout with a 6.6-V rising threshold and 0.4-V hysteresis. When HB–HS falls below this threshold, only the HO output is disabled - LO remains fully functional, allowing continued low-side operation during bootstrap recharge cycles.
What package type is used for the LM25101ASD-1/NOPB?
The LM25101ASD-1/NOPB uses an 8-pin MSOP PowerPAD package (3 mm × 3 mm) with an exposed thermal pad. This is documented in the Device Information table and Pin Configuration section of the SNVS859C datasheet, and the thermal pad must be soldered to the PCB ground plane for optimal thermal performance.
Can the LM25101ASD-1/NOPB drive both high-side and low-side MOSFETs simultaneously in a synchronous buck converter?
Yes, the LM25101ASD-1/NOPB is specifically designed for synchronous buck topologies, driving both high-side and low-side N-channel MOSFETs with independent HI and LI inputs. Its logic table (Table 4) confirms complementary HO/LO states, and its 3-A peak current supports fast gate charging of typical buck-stage MOSFETs.
LM25101ASD-1/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WDFN 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):
- 3A, 3A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 100 V
- Rise / Fall Time (Typ):
- 430ns, 260ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (4x4)
LM25101ASD-1/NOPB FAQ
1.How can I place an order for LM25101ASD-1/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM25101ASD-1/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 LM25101ASD-1/NOPB reliable?
The price and inventory of LM25101ASD-1/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM25101ASD-1/NOPB is usually 5 days.
3.What payment methods are accepted for LM25101ASD-1/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM25101ASD-1/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM25101ASD-1/NOPB?
LM25101ASD-1/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM25101ASD-1/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 LM25101ASD-1/NOPB?
For technical support, including LM25101ASD-1/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM25101ASD-1/NOPB requirements.
6.How does Aetrix verify that LM25101ASD-1/NOPB is sourced from the original manufacturer or authorized distributors?
All LM25101ASD-1/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 LM25101ASD-1/NOPB meets industry standards.
7.What is the process for return or replacement of LM25101ASD-1/NOPB?
All LM25101ASD-1/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM25101ASD-1/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 LM25101ASD-1/NOPB part is unused and in its original packaging.
Return procedure for LM25101ASD-1/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM25101ASD-1/NOPB Tags
-
ZXGD3009E6TA
Diodes Incorporated
-
1EDN7512BXTSA1
Infineon Technologies
-
UCC27517DBVR
Texas Instruments
-
MCP1416T-E/OT
Microchip Technology
-
MCP1402T-E/OT
Microchip Technology
-
MCP1415T-E/OT
Microchip Technology
-
MCP1401T-E/OT
Microchip Technology
-
IX4428NTR
Littelfuse Inc.
-
IRS2005STRPBF
Infineon Technologies
-
IRS2008STRPBF
Infineon Technologies
-
IX4310TTR
Littelfuse Inc.
-
2EDN7524RXTMA1
Infineon Technologies
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
