The TPS7H60x3-SP series consists of half-bridge gate drivers designed for the optimal control of GaN FETs in a space environment. Each enables high-frequency, high-efficiency space grade converter design while offering superb robustness against radiation induced effects. The drivers contain integrated 5 V linear regulators for the gate voltage on both the low side and the high side, ensuring enhanced reliability for the GaN FETs that are being driven. The primary use case for the drivers is in half-bridge configurations, such as synchronous buck or full-bridge topologies. However, the drivers can easily be utilized in other common converter topologies such as the push-pull, active clamp forward, or two-switch forward (with external circuit additions).

The TPS7H60x3-SP has several features that allows for operation with both legacy radiation hardened PWM controllers and newer devices like the TPS7H5001-SP as part of a GaN centric converter design. The input pins of the driver can accept signals up to 14 V, allowing it to interface directly with the older PWM controllers with high output voltages. The device also offers two distinct operating modes: PWM mode and independent input mode (IIM). In PWM mode the gate driver requires only a single input, while generating the primary and synchronous rectification outputs needed to control a synchronous buck converter. The dead time between the generated signals can be programmed via the gate driver. IIM allows for independent signals to control the low side and the high side, or if desired, can be used to operate the device in a dual low side configuration. In IIM, interlock protection can be turned on or off, depending on the specific user needs.

Furthermore, the device offers undervoltage lockout protection for both its internal regulators and the VIN and BOOT voltages. An optional bootstrap switch is integrated into the driver, which allows for charging the bootstrap diode through VIN, and remains turns on only when the low-side output is on. The combination of features and radiation performance for the TPS7H60x3-SP make it ideal for use in space-grade converter designs.