PE99155

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...