Product Description
The PE99155 is a radiation tolerant point-of-load buck regulator delivering high efficiency at VIN =...
Product Description
The PE99155 is a radiation tolerant point-of-load buck
regulator delivering high efficiency at VIN = 5V and output currents up to 10A continuous. This single-chip solution is perfect for Hi-Rel applications and delivers peak efficiency exceeding 93%. A minimal external component count and high switching frequency enables >10 W/in2 standard PCB designs while high efficiency minimizes thermal concerns. All power switching devices are integrated on-chip.
Fabricated in Peregrine’s patented UltraCMOS® technology, the PE99155 offers excellent power efficiency and intrinsic radiation tolerance.
Table 1. Radiation Performance
TID 100 kRad(Si)
SEL > 90 MeVcm2/mg
SEB
> 90 MeVcm2/mg
SET
> 90 MeVcm2/mg
SEFI SEGR
> 90 MeVcm2/mg > 90 MeVcm2/mg
SEL, SEB, SEGR, SEU, SEFI: None observed, Au/60 degrees SET: No events exceeding 30 mV transient observed @ Au, LET=90, 60 degrees and normal incidence.
Figure 1. Typical Application Diagram
Product Specification
PE99155
Hi-Rel 10A DC-DC Converter
Radiation Tolerant UltraCMOS® Monolithic Point-of-Load Synchronous Buck
Regulator with Integrated Switches
Features
Up to 10A continuous
Output voltage range from 1.0V to 3.6V by external select resistors
Input voltage range 4.6V–6.0V
Current mode control, pulse-by-pulse current limit, current sharing enabled and (N+K) redundancy compatible shutdown mode
SYNC function, 100 kHz to 5 MHz lock range with selectable 500 kHz / 1 MHz free running frequency
Sh...