TPS7H4013-SEP中文资料耐辐射、4.5V 至 14V 输入、3A 同步降压转换器数据手册TI规格书

描述 Description

The TPS7H401x devices are 14V synchronous buck converters optimized for use in a space environment. The TPS7H4012 is a 6A device and the TPS7H4013 is a 3A device. The peak current mode converter obtains high efficiency with good transient performance and reduced component count.

The wide voltage range of the TPS7H401x enables it to be used as a point of load regulator to convert directly from a 12V or 5V rail. The output voltage start-up ramp is controlled by the SS_TR pin. Power sequencing is possible with the EN and PWRGD pins.

Additionally, various features are included such as an optimized current limit for each device, a flexible switching frequency, and configurable compensation.

特性 Features

• Total ionizing dose (TID) characterized
• Single-Event Effects (SEE) characterized
• Single-event functional interrupt (SEFI) and single-event transient (SET) characterized up to LET = 75MeV-cm2/mg
• Input voltage range from 4.5V to 14V
• High efficiency (typical values for VIN = 12V, VOUT = 3.3V, fSW = 500kHz)
• 92% at 3A
• Integrated 33mΩ (HS) and 27mΩ (LS) MOSFETs (typ at 12V)
• 100kHz to 1MHz, accurate (±15% or better), adjustable internal oscillator
• 0.6V ± 0.83% voltage reference over line, temperature, and radiation
• Adjustable slope compensation and soft-start
• Power-good output monitor for undervoltage and overvoltage
• Plastic packages outgas tested per ASTM E595
• Available in military (–55°C to 125°C) temperature range