Texas Instruments TPS7H4012

Beschreibung

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.

Eigenschaften

Total ionizing dose (TID) characterizedRadiation hardness assurance (RHA) availability of up to 100krad(Si)Single-Event Effects (SEE) characterizedSingle-event latchup (SEL), single-event burnout (SEB), and single-event gate rupture (SEGR) immune up to linear energy transfer (LET) = 75MeV-cm2/mgSingle-event functional interrupt (SEFI) and single-event transient (SET) characterized up to LET = 75MeV-cm2/mgInput voltage range from 4.5V to 14V6A (TPS7H4012)or 3A (TPS7H4013) maximum output currentHigh efficiency (typical values for VIN = 12V, VOUT = 3.3V, fSW = 500kHz)88% at 1A92% at 3A91% at 6AIntegrated 33mΩ (HS) and 27mΩ (LS) MOSFETs (typ at 12V)Flexible switching frequency options:100kHz to 1MHz, accurate (±15% or better), adjustable internal oscillator100kHz to 1MHz external sync capability0.6V ± 0.83% voltage reference over line, temperature, and radiationSupports start-up into prebiased outputsAdjustable slope compensation and soft-startAdjustable input enable and power-good output for power sequencingPower-good output monitor for undervoltage and overvoltageSupports inverting buck-boost topologyPlastic packages outgas tested per ASTM E595Available in military (–55°C to 125°C) temperature range

Typische Anwendungen

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers