Analog Devices Inc. LTC7063RMSE#WTRPBF

Overview

LTC7063RMSE#WTRPBF from Analog Devices is a 150V half-bridge gate driver IC designed to control dual N-channel MOSFETs in high-noise, high-voltage power stages. It features independent floating grounds for high-side (BST/SW) and low-side (BGVCC/BGRTN) drivers, 0.8Ω pull-down / 1.5Ω pull-up drive strength, programmable dead-time via external resistor, and adaptive shoot-through protection. It is used in automotive-grade 48V/60V DC-DC converters and telecom half-bridge inverters.

For engineers reviewing the LTC7063RMSE#WTRPBF datasheet, LTC7063RMSE#WTRPBF pinout, LTC7063RMSE#WTRPBF application, or LTC7063RMSE#WTRPBF equivalent, key selection criteria include its ±10V ground differential tolerance, 140V max input voltage independent of VCC, AEC-Q100 qualification, and thermally enhanced 12-lead MSOP package with exposed SGND pad.

Technical Context

The LTC7063RMSE#WTRPBF implements a symmetric double-floating architecture: both high-side (TG/SW/BST) and low-side (BG/BGRTN/BGVCC) driver sections operate with independent ground references, enabling robust operation under large ground potential differences. Its three-state PWM input uses fixed VIH/VIL thresholds (e.g., VIH(TG) = 3.1V typ, VIL(BG) = 1.25V typ) with internal 48kΩ pull-up and 42kΩ pull-down resistors to enforce high-impedance off-state when floating.

Dead-time is precisely controlled via the DT pin using a single resistor (32ns to 250ns range), while adaptive shoot-through protection monitors gate-source transitions to prevent simultaneous conduction. Protection includes VCC UVLO/OVLO (5.3V/14.6V), floating supply UVLO (3.4V on BGVCC-BGRTN and BST-SW), and thermal shutdown at ~180°C.

Key Specifications

Pinout & Package

Package: 12-lead plastic MSOP with exposed thermal pad (Pin 13 = SGND). Exposed pad must be soldered to PCB ground for electrical integrity and thermal performance (θ_JA = 40°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge gate driver applications.

Compared with LM5109BMM/NOPB and UCC27211DRCR, the LTC7063RMSE#WTRPBF uniquely combines AEC-Q100 qualification, programmable dead-time, ±10V ground differential tolerance, and dual floating supplies-making it the only option suitable for safety-critical automotive 48V systems demanding robust noise immunity and precise timing control.

Availability

LTC7063RMSE#WTRPBF is available at Aetrix Electronics and suitable for automotive 48V DC-DC converters, telecom half-bridge inverters, and industrial motor drives requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for LTC7063RMSE#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 instrumentation, industrial automation, and automotive markets.

The LTC7063RMSE#WTRPBF belongs to Analog Devices' high-voltage gate driver product line, engineered specifically for noise-immune, high-reliability half-bridge control in automotive and industrial power conversion systems.

FAQ

What is the maximum allowable voltage difference between SW and SGND for the LTC7063RMSE#WTRPBF?

The LTC7063RMSE#WTRPBF supports a voltage range of –10V to +150V on the SW pin relative to SGND, as specified in Absolute Maximum Ratings. This ±10V ground differential tolerance enables reliable operation in high-noise environments where ground bounce or transient coupling would disrupt conventional gate drivers. The device maintains functional integrity across this full range without latch-up or parameter shift.

How does the DT pin on the LTC7063RMSE#WTRPBF set dead-time, and what resistor value yields 100ns?

The DT pin on the LTC7063RMSE#WTRPBF sets dead-time using a single resistor to SGND. Per the datasheet equation Dead-Time = R_DT × 0.44 ns/kΩ + 32 ns, a 100ns target requires R_DT ≈ (100 − 32)/0.44 ≈ 155 kΩ. A standard 154kΩ resistor achieves 99.8ns. Values up to 100kΩ are linear; above that, dead-time asymptotically approaches 250ns when DT floats.

Does the LTC7063RMSE#WTRPBF require external bootstrap diodes or charge pumps for high-side drive?

No, the LTC7063RMSE#WTRPBF does not integrate or require external bootstrap diodes or charge pumps. It relies on an external bootstrap capacitor between BST and SW, charged via an external Schottky diode (typically from VCC). The IC itself only discharges the capacitor during operation and provides no active charging-so the external diode and capacitor form the complete bootstrap network.

What fault conditions trigger the FLT pin on the LTC7063RMSE#WTRPBF, and what is its pull-down resistance?

The FLT pin on the LTC7063RMSE#WTRPBF pulls low during VCC UVLO (<5.3V) or OVLO (>14.6V), BGVCC–BGRTN UVLO (<3.4V), BST–SW UVLO (<3.4V), or thermal shutdown (~180°C). Its open-drain structure has a typical pull-down resistance of 60Ω, requiring an external pull-up resistor (e.g., 51kΩ to VCC) to generate a valid logic-high signal when faults clear after the 100µs release delay.

Is the LTC7063RMSE#WTRPBF pin-compatible with other devices in the LTC706x family, such as the LTC7062?

No, the LTC7063RMSE#WTRPBF is not pin-compatible with the LTC7062. While both use 12-lead MSOP packages, their pin functions differ significantly: LTC7062 lacks DT and FLT pins, assigns EN to Pin 4 (vs Pin 2 on LTC7063), and omits the three-state PWM architecture. Substituting them requires PCB redesign and firmware adaptation due to incompatible control logic and protection features.