The TPS7H500x-SEP series is a family of radiation-tolerant PWM controllers in space enhanced plastic. Each controller features a voltage reference of 0.613 V with accuracy of +0.7%/–1%. The switching frequency is configurable from 100 kHz to 2 MHz, with external clock synchronization capability. The series consists of the full-featured device TPS7H5005-SEP, as well as the three additional controllers TPS7H5006-SEP, TPS7H5007-SEP, and TPS7H5008-SEP.

The TPS7H5005-SEP is a radiation-tolerant, current mode, dual output PWM controller optimized for silicon (Si) and gallium nitride (GaN) based DC-DC converters in space applications. The switching frequency of the TPS7H5005-SEP can be configured from 100 kHz to 2 MHz while still maintaining a very low current consumption, which makes it ideal for fully exploiting the area reduction and high efficiency benefits of GaN based DC-DC converters. The device features integrated synchronous rectifier control outputs and dead-time programmability in order to target high efficiency and high performance topologies. In addition, the TPS7H5005- SEP supports single-ended converter topologies by providing the user flexibility to control the maximum duty cycle. The 0.613-V +0.7%/–1% accurate internal reference allows design of high-current buck converters for FPGA core voltages.

The TPS7H5006-SEP is a single output radiation-tolerant PWM controller that supports buck applications and single ended isolated topologies. The controller contains an integrated synchronous rectification output. Optimized for GaN power semiconductor based applications, the controller has configurable dead time and configurable leading edge blank time. The controller can be configured for maximum duty cycle of 75% or 100%. As such, the DCL pin can be left floating or connected to VLDO. Connection of the DCL pin to AVSS is not permissible for this device.

The TPS7H5007-SEP is also a single output radiation-tolerant PWM controller that contains an integrated synchronous rectification output. The dead time and leading edge blank time are fixed at 50 ns for this device. The controller can be configured for maximum duty cycle of 75% or 100%. As such, the DCL pin can be left floating or connected to VLDO. Connection of the DCL pin to AVSS is not permissible for this device.

The TPS7H5008-SEP is a dual output radiation-tolerant PWM controller suited for usage in non-synchronous push-pull and full-bridge topologies. The controller has configurable leading edge blank time. The maximum duty cycle for this device is 50% and is attained by connecting the DCL pin to AVSS.