1 Features

? Radiation hardened:

– SEL, SEB, and SEGR immune to

LET = 43 MeV-cm2/mg

– SET and SEFI characterized up to

LET = 43 MeV-cm2/mg

– TID assured for every wafer lot up to

50 krad(Si)

? Input voltage: 4 V to 14 V

? 0.613-V +0.7%/–1% voltage reference over

temperature, radiation, and line and load

regulation

? Switching frequency from 100 kHz to 2 MHz

? External clock synchronization capability

? Synchronous rectification outputs

– TPS7H5005-SEP, TPS7H5006-SEP,

TPS7H5007-SEP

? Adjustable dead time

– TPS7H5005-SEP, TPS7H5006-SEP

? Adjustable leading edge blank time

– TPS7H5005-SEP, TPS7H5006-SEP,

TPS7H5008-SEP

? Configurable duty cycle limit

– TPS7H5005-SEP, TPS7H5006-SEP,

TPS7H5007-SEP

? Adjustable slope compensation and soft start

? 24-pin TSSOP package

? Space Enhanced Plastic

– Controlled baseline

– Au bondwire and NiPdAu lead finish

– Meets NASA ASTM E595 outgassing

specification

– One fabrication, assembly, and test site

– Extended product life cycle

– Extended product change notification

– Product traceability

2 Applications

? Space satellite point of load supply for FPGAs,

microcontrollers, data converters, and ASICs

? Communications payload

? Command and data handling

? Optical imaging payload

? Radar imaging payload

? Satellite electrical power system

3 Description

The TPS7H500x-SEP series (consisting of

TPS7H5005-SEP, TPS7H5006-SEP, TPS7H5007-

SEP, and TPS7H5008-SEP) is a family of highspeed,

radiation-tolerant, PWM controllers in space

enhanced plastic. The controllers provide a number

of features that are beneficial for the design of

DC-DC converter topologies intended for space

applications. The controllers have a 0.613-V +0.7%/–

1% accurate internal reference and configurable

switching frequency up to 2 MHz. Each device offers

programmable slope compensation and soft-start.

The TPS7H500x-SEP series can be driven using

an external clock through the SYNC pin or

by using the internal oscillator at a frequency

programmed by the user. The controller family

offers the user various options for switching outputs,

synchronous rectification capability, dead time (fixed

or configurable), leading edge blank time (fixed or

configurable), and duty cycle limit. Each device in

the TPS7H500x-SEP series has a 24-pin TSSOP

package.