Figure 2O Positive Buck Converter

an30fa

Negative Buck Regulator
Figure 21. Negative Buck Converter (-20V to -5.2V)

12Vin

Buck Converter 30v Schematic

**VBE MATCHING OF 20mV AT 200^A L1 = PULSE ENGINEERING, INC. #PE-92210K

"I ¡--^ IRFZ44 (INTERNATIONAL RECTIFIER)

**VBE MATCHING OF 20mV AT 200^A L1 = PULSE ENGINEERING, INC. #PE-92210K

"I ¡--^ IRFZ44 (INTERNATIONAL RECTIFIER)

Figure 22. 90% Efficiency Positive Buck Converter with Synchronous Switch (9.5V-14V to 5V)

an30fa

Irfz44 Power Supply
Figure 23. Low Power Switching Regulator (9V to 5V)

1GGmH DALE TE-5Q4-TA /YYYV

1GGmH DALE TE-5Q4-TA /YYYV

Buck Converter

5VOUT

47|iF

OUTPUT ADJUST

clj HP5G82 A 281G

LT1GG4 1.2V

*1% METAL FILM RESISTOR

Figure 24. Micropower Switching Regulator (5.8V-10V to 5V)

AN3GF24

5VOUT

47|iF

74c9G7 DETAIL

INPUT

OUTPUT

OUTPUT ADJUST

clj HP5G82 A 281G

LT1GG4 1.2V

*1% METAL FILM RESISTOR

Figure 24. Micropower Switching Regulator (5.8V-10V to 5V)

AN3GF24

an30fa

Switching Regulator
Figure 25. 5V, 1A Regulator (8V-30V to 5V)

28V NOMINAL 15V TO 35V

Q1 ERF9Z3Ü

D4 MBR36Ü

Q1 ERF9Z3Ü

D4 MBR36Ü

28V NOMINAL 15V TO 35V

Positive Buck Boost Converter

28V 25ÜmA

*1% FILM RESISTORS

L1 = PULSE ENGINEERING, INC #PE-52627

Figure 26. Positive Buck-Boost Converter (15V-35V to 28V)

28V 25ÜmA

*1% FILM RESISTORS

L1 = PULSE ENGINEERING, INC #PE-52627

Figure 26. Positive Buck-Boost Converter (15V-35V to 28V)

AN3O-18 ±J TECHNOLOGY

an30fa

-48V 0V TO 60V INPUT

28v Buck Boost Converter

5V OUTPUT 4A

•MUR810 (MOTOROLA) ••1.5KE68A (MOTOROLA) tVPR1127R5E1E (MALLORY)

5V OUTPUT 4A

OPTIONAL LOW DRIFT FEEDBACK CONNECTION

FROM 5V OUTPUT

Q2 2N5401

FROM 5V OUTPUT

Q2 2N5401

TO FB PIN

TO -48V

Q3 2N5401

AN30 F27

+1 0

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