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1 Features

? Radiation performance:

– Radiation hardness assured (RHA) up to

TID 100krad(Si)

– SEL, SEB, and SEGR immune to

LET = 75MeV-cm2/mg

– SET and SEFI characterized up to

LET = 75MeV-cm2/mg

– No cross-conduction events for controller

outputs observed during SET characterization

? Input voltage: 4V to 14V

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

temperature, radiation, and line and load

regulation

? Switching frequency from 100kHz to 2MHz

? External clock synchronization capability

? Synchronous rectification outputs

– TPS7H5001-SP, TPS7H5002-SP,

TPS7H5003-SP

? Adjustable dead time

– TPS7H5001-SP, TPS7H5002-SP

? Adjustable leading edge blank time

– TPS7H5001-SP, TPS7H5002-SP,

TPS7H5004-SP

? Configurable duty cycle limit

– TPS7H5001-SP, TPS7H5002-SP,

TPS7H5003-SP

? Adjustable slope compensation and soft start

? Package options include CFP and TSSOP

2 Applications

? Space satellite point of load supply for FPGAs,

microcontrollers, data converters, and ASICs

? Communications payload

? Command and data handling

? Satellite electrical power system

3 Description

The TPS7H500x-SP family of high speed radiationhardness-

assured PWM controllers. 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

0.613V +0.7%/–1% accurate internal reference and

configurable switching frequency up to 2MHz. Each

device offers programmable slope compensation and

soft-start.

The TPS7H500x-SP 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-SP series is available in both a 22-pin

CFP ceramic package and a 24-pin TSSOP plastic

package.