PE99155 Datasheet, PDF (1/15 Pages) Peregrine Semiconductor – Radiation Hardened UltraCMOS Monolithic Point-of-Load Synchronous Buck Regulator with Integrated Switches

Product Description
The PE99155 is a radiation hardened 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 MeV•cm²/mg
SEB
> 90 MeV•cm²/mg
SET
> 90 MeV•cm²/mg
SEFI
SEGR
> 90 MeV•cm²/mg
> 90 MeV•cm²/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 Hardened 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 – 5 MHz lock
range with selectable 500 kHz / 1 MHz
free running frequency
 Shutdown pin, Power Good output
pin for supply sequencing
 Better than 1% typical initial accuracy
(25°C)
 Control inputs compatible with TTL,
LVTTL, LVCMOS (2.5V and 3.3V)
and 5V CMOS
 Available in ceramic hermetic
packaging and in die form
Figure 2. Package Type
32-lead CQFP
Document No. 70-0307-07 │ www.psemi.com
©2011-2012 Peregrine Semiconductor Corp. All rights reserved.
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