µPOL

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µPOL Target requirement specification

Parameter

Criterion

Input voltage

+8 to +13 V

Output voltage

+1.5V to +5 V

DC/DC Core Efficiency

>85 % @ 3.3 V with maximum output current

Max output current

5A

Radiation tolerance

30 kRad

SET/SEL LET

80 MeV/(mg/cm2)

Operational temperature range

-40 to +85 °C

Current rate change

>10 A/µs (with external output capacitor)

Static accuracy

1.5 %   

Accuracy during transient

5 %

Voltage ripple

< 100 mV

ITAR

The POL shall not use ITAR components.

Sequencing

The POL shall have an On/Off signal.

No load sharing

The POL shall not have load sharing capabilities by default.

 Miniaturized Rad-tolerant Point-of-Load (summary)

Buck converter architecture
One selectable output voltage
Input voltage: 8 - 13 V
Output voltage: 1.5 - 5 V configurable with external resistors
Max output current: 5 A
Individual components radiation tested to 30 kRad
Input current limiter with thermal protection
Output overvoltage protection
Output current limited by current loop
Telemetry: On/off, power good
Verified within specification.
-55 C to +125 C (optionally -120 °C to 70 °C

POL PCB Prototype

 

 

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