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Analog Devices Inc. LTC7061IMSE#WTRPBF
- Part No.:
- LTC7061IMSE#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 12-TSSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC7061IMSE#WTRPBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:112
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Product details
Overview
LTC7061IMSE#WTRPBF from Analog Devices is a 100V half-bridge gate driver IC for dual N-channel MOSFETs in high-noise industrial and automotive power converters. It features independent floating grounds (SW and BGRTN), 0.8Ω pull-down / 1.5Ω pull-up drive strength, adjustable dead-time via external resistor, and adaptive shoot-through protection. Used in telecom DC/DC modules where ±10V ground differential immunity and 125°C operation are required.
For engineers reviewing the LTC7061IMSE#WTRPBF datasheet, LTC7061IMSE#WTRPBF pinout, LTC7061IMSE#WTRPBF application, or LTC7061IMSE#WTRPBF equivalent, key selection criteria include floating supply UVLO thresholds (3.4V for BST-SW and BGVCC-BGRTN), TTL/CMOS-compatible inputs with 1.75V VIH, open-drain FLT fault reporting, and thermally enhanced 12-lead MSOP packaging with exposed SGND pad.
Technical Context
The LTC7061IMSE#WTRPBF implements symmetric dual-level-shifting drivers with independent UVLO monitoring on VCC (4.3V falling), BST-SW (3.4V falling), and BGVCC-BGRTN (3.4V falling), each with 0.3V hysteresis. Its adaptive shoot-through protection blocks simultaneous TG/BG high states by sensing gate-source voltage transitions, not just input timing.
Dead-time is programmable from 32ns to 250ns via a single resistor on DT pin to SGND, with propagation delay matching between high-side and low-side channels (tPLH(BG) = tPLH(TG)). Input logic uses internal 1MΩ pull-downs on TOPIN/BOTIN, enabling default-low fail-safe operation without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Max | 100V - supports high-voltage half-bridge topologies independent of VCC supply |
| VCC Range | 5V to 14V - powers internal logic; includes 4.3V UVLO with 0.2V hysteresis |
| Driver RUP/RDOWN | 1.5Ω / 0.8Ω - delivers ~3A peak pull-up and ~6A peak pull-down at 10V supply |
| Dead-Time Range | 32ns to 250ns - set by RDT (0Ω to open), enabling robust shoot-through margin tuning |
| Operating Temp | −40°C to +125°C - guaranteed performance for automotive-grade AEC-Q100-in-progress applications |
| Package | 12-lead MSOP with exposed SGND pad - θJA = 40°C/W; requires soldered thermal pad for rated performance |
| FLT Output | Open-drain fault flag - pulls low on VCC UVLO/OVLO, floating supply UVLO, or thermal shutdown (≈180°C) |
Pinout & Package
12-lead plastic MSOP package (MSE) with exposed pad (Pin 13) tied to SGND. Thermal pad must be soldered to PCB ground plane for electrical integrity and thermal performance (θJA = 40°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | IC bias supply | Referred to SGND; powers internal logic; bypass with ≥0.1µF capacitor |
| BGVCC | Bottom gate driver supply | Biased relative to BGRTN; connects to bootstrap capacitor anode |
| BGRTN | Bottom driver return | Kelvin-connected to bottom MOSFET source; tolerates −10V to +100V vs SGND |
| BG | Bottom gate driver output | Swings between BGVCC and BGRTN; drives N-MOSFET gate |
| BST | Top gate driver supply | Biased relative to SW; connects to bootstrap capacitor anode |
| SW | Top driver return | Kelvin-connected to top MOSFET source; tolerates −10V to +100V vs SGND |
| TG | Top gate driver output | Swings between BST and SW; drives N-MOSFET gate |
| TOPIN | High-side logic input | TTL/CMOS compatible; 1.75V VIH, 0.5V VIL, internal 1MΩ pull-down to SGND |
| BOTIN | Low-side logic input | TTL/CMOS compatible; 1.75V VIH, 0.5V VIL, internal 1MΩ pull-down to SGND |
| DT | Dead-time programming | Resistor to SGND sets matched propagation delay (32–250ns) between BG↓→TG↑ and TG↓→BG↑ |
| FLT | Fault indicator output | Open-drain; pulls low on VCC/floating-supply UVLO/OVLO or thermal shutdown; 100µs delay on recovery |
| SGND | Chip ground | Reference for VCC, DT, FLT, TOPIN, BOTIN; exposed pad (Pin 13) must be soldered to PCB ground |
Key Features
| Feature | Design Value |
|---|---|
| Symmetric floating ground architecture | Enables ±10V ground differential tolerance on SW and BGRTN pins-critical for noisy high-dv/dt motor drives |
| Adjustable dead-time with matched propagation | Single RDT sets identical delays for both BG↓→TG↑ and TG↓→BG↑ transitions, eliminating timing skew |
| Adaptive shoot-through protection | Monitors actual MOSFET gate-source voltage-not just input edges-to prevent cross-conduction during transients |
| Triple UVLO monitoring | Independent lockout on VCC, BST-SW, and BGVCC-BGRTN ensures safe turn-off if any supply drops below 3.4V or 4.3V |
| Fail-safe input logic | Internal 1MΩ pull-downs on TOPIN/BOTIN guarantee TG/BG remain low when controller signals are absent or floating |
Applications
| Telecom DC/DC Converters | Automotive On-Board Chargers |
|---|---|
|
Use Scenario: 48V–600V isolated half-bridge DC/DC stage in 5G base station power supplies operating at 200kHz with >100V/ns dv/dt. IC Role / Device Role / Timing Role: Half-bridge gate driver providing independent level-shifted control of high- and low-side N-MOSFETs with noise-immune floating grounds. Use Value: ±10V ground differential tolerance prevents false triggering during fast switching transients; 0.8Ω pull-down suppresses Miller-induced turn-on in high-CGD SiC MOSFETs. |
Use Scenario: Bidirectional CLLC resonant converter in EV on-board charger handling 6.6kW AC/DC + DC/DC conversion with AEC-Q100 compliance requirements. IC Role / Device Role / Timing Role: Automotive-grade gate driver managing synchronous rectification and primary-side switching with thermal shutdown at ≈180°C. Use Value: −40°C to +125°C guaranteed operation meets automotive ambient requirements; open-drain FLT pin interfaces directly with vehicle fault bus. |
| Industrial Motor Drives | Server VRMs |
|
Use Scenario: 3-phase inverter stage in servo drives using discrete 100V N-MOSFETs, requiring robust EMI immunity in factory-floor environments. IC Role / Device Role / Timing Role: Floating-ground half-bridge driver enabling Kelvin source connections to minimize common-mode noise coupling into gate loops. Use Value: Independent UVLO on BST-SW and BGVCC-BGRTN prevents partial turn-on during bootstrap capacitor discharge; DT pin allows field-tuning of dead-time for varying MOSFET QG. |
Use Scenario: High-efficiency 48V-to-12V intermediate bus converter in AI server racks, operating at 500kHz with tight thermal constraints. IC Role / Device Role / Timing Role: Dual N-MOSFET driver delivering fast 14ns fall time (CLOAD = 3nF) to minimize conduction losses in high-frequency synchronous buck stages. Use Value: 1.5Ω pull-up + 0.8Ω pull-down enables <18ns rise/fall times-reducing switching loss by >15% vs legacy drivers at 500kHz. |
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 |
|---|---|---|---|
| IRS21844STRPBF | Fixed 600ns dead-time; no adjustable DT pin; lower max VIN (600V bootstrap, but only 200V absolute max on HO/LO) | Targeted at lower-cost consumer SMPS; lacks floating supply UVLO and adaptive shoot-through protection | Select when cost sensitivity outweighs need for programmable dead-time and automotive-grade fault coverage |
| UCC27211DRCR | Non-isolated dual-driver; 120V max VDD; no floating ground architecture; fixed 10ns dead-time | Designed for integrated half-bridge modules with shared source; unsuitable for discrete MOSFETs with large ground offsets | Select only for compact board layouts where SW/BGRTN differential is <1V and bootstrap complexity must be minimized |
Compared with IRS21844STRPBF and UCC27211DRCR, the LTC7061IMSE#WTRPBF uniquely combines programmable dead-time, triple UVLO, adaptive shoot-through protection, and ±10V floating ground tolerance-making it the only option qualified for AEC-Q100-in-progress automotive traction auxiliary supplies.
Availability
LTC7061IMSE#WTRPBF is available at Aetrix Electronics and suitable for automotive on-board chargers, telecom DC/DC converters, and industrial motor drives requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC7061IMSE#WTRPBF 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision, power, and RF markets since 1965.
The LTC7061IMSE#WTRPBF belongs to Analog Devices' Power by Linear™ high-voltage gate driver family, engineered specifically for noise-immune, high-reliability half-bridge control in automotive, industrial, and telecom power systems.
FAQ
What is the maximum allowable ground potential difference between SW and SGND for LTC7061IMSE#WTRPBF?
The LTC7061IMSE#WTRPBF supports up to ±10V ground differential between SW and SGND, as specified in Absolute Maximum Ratings and confirmed in Applications Information. This tolerance enables reliable operation in high-dv/dt environments such as SiC-based motor drives where source node ringing exceeds conventional driver limits. The device maintains correct logic translation and UVLO monitoring even under sustained −10V offset.
How does the adaptive shoot-through protection in LTC7061IMSE#WTRPBF differ from standard input-based dead-time?
Unlike fixed or programmable dead-time schemes, the LTC7061IMSE#WTRPBF's adaptive shoot-through protection monitors actual MOSFET gate-source voltage transitions-not just TOPIN/BOTIN timing-to block simultaneous conduction. This prevents cross-conduction during fast transients or layout-induced delays where input-based dead-time alone would be insufficient. The feature operates independently of DT pin configuration and remains active across the full −40°C to +125°C range.
Can LTC7061IMSE#WTRPBF drive both high-side and low-side MOSFETs with different gate threshold voltages?
Yes. The LTC7061IMSE#WTRPBF supports gate driver supply ranges of 4V to 14V for both BST-SW and BGVCC-BGRTN, allowing independent optimization for logic-level (e.g., 4.5V VGS) and standard-threshold (e.g., 10V VGS) MOSFETs. Its 1.5Ω pull-up and 0.8Ω pull-down ensure sufficient peak current (≥3A/6A at 10V) to rapidly charge/discharge diverse QG values without compromising rise/fall times.
What is the function of the FLT pin on LTC7061IMSE#WTRPBF, and how should it be interfaced?
The FLT pin on LTC7061IMSE#WTRPBF is an open-drain fault indicator that pulls low during VCC UVLO/OVLO, BST-SW UVLO, BGVCC-BGRTN UVLO, or thermal shutdown (~180°C). It requires an external pull-up resistor (e.g., 51kΩ to VCC) and provides a 100µs delay before releasing after fault clearance. This enables direct connection to microcontroller GPIOs or system fault buses without additional level-shifting.
Is LTC7061IMSE#WTRPBF pin-compatible with other members of the LTC706x family?
No. While LTC7061IMSE#WTRPBF shares the same 12-lead MSOP package with LTC7060/LTC7062/LTC7063, pin functions differ significantly-especially DT, FLT, and input configurations. For example, LTC7060 uses three-state PWM inputs and lacks DT pin functionality, while LTC7062 omits shoot-through protection. Direct substitution without schematic and layout review will cause functional failure.
LTC7061IMSE#WTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Driven Configuration:
- Half-Bridge
- Channel Type:
- -
- Number of Drivers:
- -
- Gate Type:
- -
- Voltage - Supply:
- 5V ~ 14V
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- -
- Input Type:
- -
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-MSOP-EP
LTC7061IMSE#WTRPBF FAQ
1.How can I place an order for LTC7061IMSE#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC7061IMSE#WTRPBF 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 LTC7061IMSE#WTRPBF reliable?
The price and inventory of LTC7061IMSE#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC7061IMSE#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC7061IMSE#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC7061IMSE#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC7061IMSE#WTRPBF?
LTC7061IMSE#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC7061IMSE#WTRPBF 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 LTC7061IMSE#WTRPBF?
For technical support, including LTC7061IMSE#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC7061IMSE#WTRPBF requirements.
6.How does Aetrix verify that LTC7061IMSE#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC7061IMSE#WTRPBF 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 LTC7061IMSE#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC7061IMSE#WTRPBF?
All LTC7061IMSE#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC7061IMSE#WTRPBF, 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 LTC7061IMSE#WTRPBF part is unused and in its original packaging.
Return procedure for LTC7061IMSE#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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