My Inquiry
My Account
Texas Instruments LM5100BSD/NOPB
- Part No.:
- LM5100BSD/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 10-WDFN Exposed Pad
- Datasheet:
-
LM5100BSD/NOPB.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,748
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM5100BSD/NOPB from Texas Instruments is a 3-A high-voltage dual gate driver IC designed to independently control high-side and low-side N-channel MOSFETs in synchronous buck and half-bridge topologies. It features CMOS-input logic thresholds, 118-V bootstrap supply capability, 25-ns typical propagation delay, and integrated bootstrap diode - enabling robust operation in industrial DC/DC converters up to 100 V HS node voltage.
For engineers reviewing the LM5100BSD/NOPB datasheet, LM5100BSD/NOPB pinout, LM5100BSD/NOPB application, or LM5100BSD/NOPB equivalent, key selection criteria include bootstrap diode forward voltage (0.52 V @ 100 µA), UVLO rising threshold (6.9 V on VDD), peak sourcing/sinking current (3 A), propagation delay matching (3 ns typical), and SO PowerPAD-8 thermal performance (RθJA = 40 °C/W).
Technical Context
The LM5100BSD/NOPB integrates a high-speed level shifter that references the high-side driver to the HS node, enabling clean logic-to-HO transitions while maintaining tight 3-ns typical delay matching between LO and HO paths. Its floating high-side stage operates with HB–HS up to 118 V DC and supports HS node voltages from –1 V to 100 V.
Undervoltage lockout independently monitors VDD (6.9 V rising threshold) and HB–HS (6.6 V rising threshold), disabling only the affected output during fault conditions. The on-chip bootstrap diode (VF = 0.52 V @ 100 µA, trr = 37 ns) eliminates external diode requirements while ensuring reliable capacitor recharge across switching cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 3 A sourcing/sinking - drives 1000-pF loads with 8-ns rise/fall times for fast MOSFET switching |
| Bootstrap Supply Voltage | Up to 118 V DC - enables high-side operation with 100-V HS node in buck/half-bridge converters |
| Propagation Delay | 25 ns typical - ensures precise timing control in high-frequency (>500 kHz) power stages |
| Delay Matching | 3 ns typical - minimizes shoot-through risk by synchronizing LO/HO turn-on/off edges |
| VDD UVLO Threshold | 6.9 V rising (25°C), 6.0 V min - prevents erratic operation during brownout or startup |
| Input Logic Type | CMOS threshold - compatible with 3.3-V/5-V controllers without level-shifting circuitry |
| Package Thermal Resistance | RθJA = 40 °C/W (SO PowerPAD-8) - supports >2 W continuous dissipation with standard PCB layout |
Pinout & Package
LM5100BSD/NOPB is housed in an 8-pin SO PowerPAD™ package with exposed thermal pad soldered to PCB ground plane for enhanced heat dissipation. Pin 1 is VDD; pin 2 is HB; pin 3 is HO; pin 4 is HS; pin 5 is HI; pin 6 is LI; pin 7 is VSS; pin 8 is LO.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive gate drive supply input | Local decoupling required; powers low-side driver and logic; UVLO monitored independently |
| HB (Pin 2) | High-side bootstrap supply | Connects to positive terminal of bootstrap capacitor; referenced to HS; supplies high-side driver |
| HO (Pin 3) | High-side gate driver output | Drives MOSFET gate referenced to HS; capable of 3-A peak current into capacitive load |
| HS (Pin 4) | High-side source connection | Node between external high-side MOSFET source and bootstrap capacitor negative terminal |
| HI (Pin 5) | High-side input control | CMOS-threshold logic input; unused pins must be tied to GND to prevent floating |
| LI (Pin 6) | Low-side input control | CMOS-threshold logic input; independent of HI for flexible PWM or complementary drive schemes |
| VSS (Pin 7) | Ground return | Reference for all signals except HO; exposed thermal pad must be connected to PCB ground plane |
| LO (Pin 8) | Low-side gate driver output | Drives MOSFET gate referenced to VSS; 3-A peak current capability with 0.12-V low-level output |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Bootstrap Diode | 0.52-V forward drop at 100 µA enables self-contained bootstrap charging without external diode |
| Independent UVLO Monitoring | Separate VDD and HB–HS UVLO circuits prevent false triggering and ensure safe startup sequencing |
| Robust Level Shifter | High-speed, low-power architecture delivers clean HO transitions with <3-ns delay mismatch vs LO |
| SO PowerPAD-8 Package | 40 °C/W junction-to-ambient thermal resistance supports high-current operation without heatsink |
| CMOS Input Compatibility | 5.4-V typical input threshold allows direct interface with 3.3-V and 5-V microcontrollers/PWM controllers |
Applications
| Industrial Motor Drive Inverter | Synchronous Buck Converter |
|---|---|
|
Use Scenario: Driving high-side/low-side MOSFETs in 3-phase inverter leg for 24–48 V BLDC motor control. IC Role / Device Role / Timing Role: Dual gate driver providing independent HI/LI control, bootstrap-referenced HO output, and matched LO/HO timing to minimize dead-time uncertainty. Use Value: 3-A peak current and 8-ns rise time enable efficient 100-kHz+ switching, reducing conduction losses in 10-A motor phase currents. |
Use Scenario: Gate driving in 12-V input, 3.3-V output synchronous buck converter for FPGA core power. IC Role / Device Role / Timing Role: High-side/low-side driver with integrated bootstrap diode and CMOS inputs, eliminating external components and simplifying layout. Use Value: 25-ns propagation delay and 3-ns matching reduce minimum on-time limitation and improve light-load efficiency. |
| Half-Bridge LLC Resonant Converter | Two-Switch Forward Converter |
|
Use Scenario: Controlling primary-side switches in 300-W telecom LLC resonant converter operating at 300–500 kHz. IC Role / Device Role / Timing Role: High-voltage gate driver supporting 100-V HS node swing and fast 8-ns edge rates for zero-voltage switching (ZVS) compliance. Use Value: 118-V bootstrap rating and 100-V HS tolerance allow direct use with 400-V bus designs using auxiliary winding bias. |
Use Scenario: Driving main switches in isolated 48-V input, 12-V output two-switch forward converter for server power supplies. IC Role / Device Role / Timing Role: Dual-output driver with independent HI/LI inputs enabling asymmetric duty-cycle control and precise dead-time management. Use Value: Independent UVLO on VDD and HB–HS prevents misfiring during transient overloads or transformer saturation events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage dual gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5101BSD/NOPB | TTL input thresholds (1.8 V VIH), lower peak current (3 A same, but higher VOL/VOH), identical pinout and package | Better compatibility with legacy 5-V TTL logic; slightly higher gate drive loss due to 0.24-V VOH at 100 mA | Select when interfacing with 5-V microcontrollers or PWM ICs with TTL outputs; verify VIH/VIL margins. |
| UCC27201D | Higher 4-A peak current, 12-V max VDD, no integrated bootstrap diode, SOIC-8 (no PowerPAD) | Requires external bootstrap diode and tighter thermal design; suited for lower-voltage (<60 V) applications with aggressive switching | Choose for cost-sensitive designs where external diode is acceptable and thermal budget permits RθJA = 170 °C/W. |
Compared with LM5101BSD/NOPB, LM5100BSD/NOPB offers superior noise immunity via CMOS thresholds and lower gate drive losses; versus UCC27201D, it provides integrated bootstrap functionality and superior thermal performance but targets higher-voltage systems.
Availability
LM5100BSD/NOPB is available at Aetrix Electronics and suitable for industrial motor drives, synchronous buck converters, half-bridge LLC resonant converters, and two-switch forward power supplies requiring stable component supply and long-term production support.
Supply support for LM5100BSD/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 company specializing in analog and embedded processing technologies, with leadership in power management ICs and high-reliability industrial solutions.
The LM5100BSD/NOPB belongs to TI's high-voltage gate driver product line, engineered for efficiency-critical DC/DC conversion in industrial, telecom, and computing power supplies where bootstrap-based high-side drive and precise timing are essential.
FAQ
What is the maximum allowable HS node voltage for LM5100BSD/NOPB?
The LM5100BSD/NOPB supports HS node voltages from –1 V to 100 V per datasheet Section 7.3. This range accommodates typical body-diode clamping in buck/half-bridge configurations and allows operation with 400-V bus designs using auxiliary winding bias. Transient excursions below –1 V must not exceed VDD – 15 V to avoid damage.
Does LM5100BSD/NOPB require an external bootstrap diode?
No. LM5100BSD/NOPB integrates a high-voltage bootstrap diode with 0.52-V forward voltage at 100 µA and 37-ns reverse recovery time. This eliminates the need for an external diode, reduces BOM count, and improves reliability in high-frequency switching applications such as synchronous buck converters.
What is the purpose of the exposed thermal pad on the LM5100BSD/NOPB SO PowerPAD package?
The exposed thermal pad on the LM5100BSD/NOPB must be soldered to the PCB ground plane to achieve the specified RθJA of 40 °C/W. It serves as the primary thermal path for dissipating up to 2 W of power, enabling sustained 3-A peak gate drive without external heatsinks in standard 4-layer board layouts.
How does the UVLO function differ between the VDD and HB rails in LM5100BSD/NOPB?
LM5100BSD/NOPB implements independent UVLO circuits: VDD UVLO triggers at 6.9 V (rising) and disables both HO and LO; HB–HS UVLO triggers at 6.6 V (rising) and disables only HO. This ensures low-side operation remains active during bootstrap faults, improving system fault tolerance in half-bridge configurations.
Can LM5100BSD/NOPB drive MOSFETs with gate charges exceeding 100 nC?
Yes. With 3-A peak sourcing/sinking current and 8-ns rise/fall times into 1000-pF loads, LM5100BSD/NOPB can efficiently drive MOSFETs with Qg up to ~150 nC at 500-kHz switching frequency. Layout optimization - especially short, low-inductance gate traces - is critical to maintain timing integrity and minimize ringing.
LM5100BSD/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-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):
- 2A, 2A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 118 V
- Rise / Fall Time (Typ):
- 570ns, 430ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (4x4)
LM5100BSD/NOPB FAQ
1.How can I place an order for LM5100BSD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5100BSD/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 LM5100BSD/NOPB reliable?
The price and inventory of LM5100BSD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5100BSD/NOPB is usually 5 days.
3.What payment methods are accepted for LM5100BSD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5100BSD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM5100BSD/NOPB?
LM5100BSD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5100BSD/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 LM5100BSD/NOPB?
For technical support, including LM5100BSD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5100BSD/NOPB requirements.
6.How does Aetrix verify that LM5100BSD/NOPB is sourced from the original manufacturer or authorized distributors?
All LM5100BSD/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 LM5100BSD/NOPB meets industry standards.
7.What is the process for return or replacement of LM5100BSD/NOPB?
All LM5100BSD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5100BSD/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 LM5100BSD/NOPB part is unused and in its original packaging.
Return procedure for LM5100BSD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM5100BSD/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…
