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Texas Instruments LM5100BMAX/NOPB
- Part No.:
- LM5100BMAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM5100BMAX/NOPB.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,309
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Product details
Overview
LM5100BMAX/NOPB from Texas Instruments is a 2-A high-voltage dual-channel gate driver IC designed to independently control high-side and low-side N-channel MOSFETs in half-bridge, synchronous buck, and forward converter topologies. It features CMOS input thresholds, 118-V bootstrap supply capability, 25-ns typical propagation delay, and integrated bootstrap diode - enabling robust operation up to 100 V HS node voltage in industrial motor drives and telecom power supplies.
For engineers reviewing the LM5100BMAX/NOPB datasheet, LM5100BMAX/NOPB pinout, LM5100BMAX/NOPB application, or LM5100BMAX/NOPB equivalent, key selection criteria include bootstrap diode forward voltage (0.8 V @ 100 mA), UVLO thresholds (VDD rising = 6.9 V, HB rising = 6.6 V), propagation delay matching (≤10 ns), thermal resistance (RθJA = 40 °C/W for SO PowerPAD-8), and SOIC-8 package compatibility with HIP2100/HIP2101 layouts.
Technical Context
The LM5100BMAX/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 ≤10 ns delay matching between LO and HO channels. Its floating high-side stage operates with VHB–HS up to 18 V and supports HS voltages from –1 V to 100 V, making it suitable for fast-switching hard-switched converters.
Undervoltage lockout operates independently on VDD and HB rails: VDD UVLO triggers full output disable, while HB UVLO disables only HO. The on-chip bootstrap diode (VF = 0.8 V @ 100 mA, trr = 37 ns) eliminates external diode requirements and ensures reliable capacitor recharge during each switching cycle at frequencies up to 500 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | 2 A sourcing/sinking - sufficient to drive 1000-pF gate loads with 8-ns rise/fall times in high-frequency SMPS. |
| Bootstrap Supply Voltage | Up to 118 V DC - enables use with high-bus applications such as 48-V telecom and 100-V industrial DC links. |
| Propagation Delay | 20–45 ns (typ) - ensures precise timing control in <100-ns dead-time critical designs like synchronous rectification. |
| UVLO Thresholds | VDD rising = 6.9 V, HB rising = 6.6 V - prevents erratic switching during brownout or soft-start conditions. |
| Input Threshold Type | CMOS - compatible with 3.3-V/5-V microcontrollers and PWM controllers without level-shifting circuitry. |
| Thermal Resistance | RθJA = 40 °C/W (SO PowerPAD-8) - supports >2 W continuous dissipation with standard 4-layer PCB layout. |
| Switch Node Range | HS = –1 V to 100 V - accommodates body-diode clamping and transient overshoot in hard-switched bridges. |
Pinout & Package
LM5100BMAX/NOPB is packaged in an 8-pin SOIC with exposed PowerPAD (DPR package), where the exposed pad must be soldered to PCB ground plane for thermal and electrical performance. Pin 7 (VSS) serves as the low-side reference; pin 4 (HS) is the high-side source node connection and functional ground for the floating high-side driver.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Low-side gate drive supply input | Primary power rail for LO stage and internal logic; requires local 0.1-µF low-ESR decoupling to VSS. |
| HB (Pin 2) | High-side bootstrap supply input | Connects to positive terminal of bootstrap capacitor; referenced to HS, not VSS. |
| HO (Pin 3) | High-side gate driver output | Drives high-side MOSFET gate with respect to HS; must route with minimal inductance to avoid ringing. |
| HS (Pin 4) | High-side source node / floating ground | Reference point for HO output and bootstrap capacitor negative terminal; connects directly to MOSFET source. |
| HI (Pin 5) | High-side logic input | CMOS-compatible control signal; unused pins must be tied to VSS to prevent floating inputs. |
| LI (Pin 6) | Low-side logic input | CMOS-compatible control signal; independent of HI for flexible dead-time implementation. |
| VSS (Pin 7) | Low-side ground return | Reference for VDD, LI, LO, and internal logic; must connect to main system ground with low impedance. |
| LO (Pin 8) | Low-side gate driver output | Drives low-side MOSFET gate with respect to VSS; complements HO in half-bridge configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | VF = 0.8 V @ 100 mA, trr = 37 ns - eliminates external diode, reduces BOM count, and improves reliability in high-reliability power systems. |
| Independent HI/LI inputs | Full logic-level control of HO and LO - enables asymmetric drive, programmable dead time, and fault recovery sequencing. |
| Robust level shifter | Delay matching ≤10 ns between LO and HO - minimizes shoot-through risk in high-frequency bridge drivers. |
| Dual UVLO protection | Separate VDD and HB monitoring - prevents partial enablement and ensures safe startup under marginal supply conditions. |
| SOIC-8 pin compatibility | P2P replacement for HIP2100/HIP2101 - allows drop-in upgrade path with enhanced 2-A drive and integrated diode. |
Applications
| Industrial Motor Drives | Telecom DC-DC Converters |
|---|---|
|
Use Scenario: Driving high-side/low-side MOSFETs in 48-V input half-bridge inverters for servo motor control. IC Role / Device Role / Timing Role: Dual-channel gate driver providing independent HI/LI control, 100-V HS tolerance, and matched propagation delays for precise PWM timing. Use Value: Enables <100-ns dead-time control and reduces conduction loss via 2-A peak drive current, improving efficiency by ≥0.8% at 20-kHz switching. |
Use Scenario: Gate driving in 36–75-V input isolated forward converters for 12-V/48-V telecom power shelves. IC Role / Device Role / Timing Role: High-voltage level shifter and bootstrap charger for high-side FET, operating with HS node up to 100 V. Use Value: Integrated 118-V bootstrap diode eliminates external component, reducing layout area by 12 mm² and improving thermal margin at 500-kHz operation. |
| Synchronous Buck Regulators | Active-Clamp Forward Converters |
|
Use Scenario: Driving upper/lower MOSFETs in 12-V output, 200-A server VRMs with multiphase interleaving. IC Role / Device Role / Timing Role: Low-latency (25-ns typ), low-jitter gate driver with CMOS inputs compatible with digital PWM controllers. Use Value: 8-ns rise/fall times minimize switching losses in high-current phases, supporting >95% efficiency at 500-kHz operation. |
Use Scenario: Controlling main switch and active-clamp FET in 400-V bus telecom forward converters. IC Role / Device Role / Timing Role: High-side driver referenced to dynamic HS node, with UVLO hysteresis preventing false turn-on during clamp transitions. Use Value: Dual UVLO (VDD + HB) ensures coordinated shutdown during overvoltage events, enhancing system safety per IEC 62368-1. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage dual-channel gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5100AMAX/NOPB | 3-A peak output current; identical pinout, package, and UVLO thresholds. | Higher gate charge delivery for >1500-pF loads or faster slew rates in >1-MHz resonant converters. | Select when driving larger MOSFETs (Qg > 60 nC) or requiring lower gate drive resistance (<1 Ω). |
| HIP2101BIBZT | No integrated bootstrap diode; TTL input thresholds; RθJA = 65 °C/W (SOIC-8). | Requires external bootstrap diode and level-shifting for 3.3-V controllers; higher thermal impedance limits power density. | Choose only if legacy design reuse is required and external diode placement is acceptable. |
Compared with LM5100AMAX/NOPB and HIP2101BIBZT, LM5100BMAX/NOPB delivers optimal balance of 2-A drive strength, integrated diode, CMOS compatibility, and thermal performance - making it ideal for mid-power industrial and telecom converters where BOM simplification and reliability are prioritized over maximum current headroom.
Availability
LM5100BMAX/NOPB is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC-DC converters, and synchronous buck regulators requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.
Supply support for LM5100BMAX/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 LM5100x family was developed specifically for high-voltage, high-efficiency switching power supplies - targeting half-bridge, synchronous buck, and forward converter topologies where integrated bootstrap diodes, precise timing, and robust UVLO are essential.
FAQ
What is the maximum allowable HS node voltage for LM5100BMAX/NOPB?
The LM5100BMAX/NOPB supports HS node voltages from –1 V to 100 V per the datasheet's Recommended Operating Conditions. This range accommodates body-diode clamping and transient overshoot in hard-switched bridges. Exceeding 100 V risks permanent damage, as absolute maximum rating for HS to VSS is 100 V.
Does LM5100BMAX/NOPB require an external bootstrap diode?
No. LM5100BMAX/NOPB integrates a high-voltage bootstrap diode (anode to VDD, cathode to HB) with 0.8 V forward voltage at 100 mA and 37 ns reverse recovery time. This eliminates the need for external diodes in most designs, reducing component count and layout complexity while improving reliability.
What is the input threshold type for LM5100BMAX/NOPB?
LM5100BMAX/NOPB uses CMOS input thresholds: VIH ≈ 6.3 V (min), VIL ≈ 4.5 V (max) at 25°C. This makes it compatible with standard 5-V logic and 3.3-V controllers with appropriate pull-up, unlike TTL-input variants (LM5101B) which require ~2 V logic levels.
How does UVLO function on the HB rail in LM5100BMAX/NOPB?
LM5100BMAX/NOPB implements independent UVLO on the HB rail: if HB voltage falls below 6.6 V (rising threshold), only the high-side output (HO) is disabled while LO remains operational. This prevents shoot-through during bootstrap capacitor discharge without halting low-side switching - critical for fault-tolerant operation.
Which package does LM5100BMAX/NOPB use, and what is its thermal advantage?
LM5100BMAX/NOPB uses the SO PowerPAD-8 (DPR) package with an exposed thermal pad soldered to PCB ground. Its RθJA is 40 °C/W (vs. 170 °C/W for standard SOIC-8), enabling >2 W power dissipation with proper copper pour - significantly improving thermal headroom in compact, high-density power modules.
LM5100BMAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
LM5100BMAX/NOPB FAQ
1.How can I place an order for LM5100BMAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5100BMAX/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 LM5100BMAX/NOPB reliable?
The price and inventory of LM5100BMAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5100BMAX/NOPB is usually 5 days.
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LM5100BMAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5100BMAX/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 LM5100BMAX/NOPB?
For technical support, including LM5100BMAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5100BMAX/NOPB requirements.
6.How does Aetrix verify that LM5100BMAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM5100BMAX/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 LM5100BMAX/NOPB meets industry standards.
7.What is the process for return or replacement of LM5100BMAX/NOPB?
All LM5100BMAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5100BMAX/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 LM5100BMAX/NOPB part is unused and in its original packaging.
Return procedure for LM5100BMAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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