Power-one DFA20E12S5, DFA20E12S3.3, DFA20E12S15, DFA20E12S12, DFA20E48S5 Datasheet

DFA20 SERIES

SINGLE OUTPUT

DESCRIPTION

The compact DFA20 Series provides power densities up to 11 watts per cubic inch (0.67 watts per cm3). Ideal for battery operated industrial, medical control and remote data collection systems, this converter has fully filtered inputs and outputs. Complete overload protection with independent pulse-by-pulse current limiting and an overtemperature shutdown ensures reliable system operation. The output of the converter is electrically isolated, thereby allowing the output to be configured as a positive or negative output voltage.

FEATURES

•Remote ON/OFF and TRIM

•Overcurrent Protection and Thermal Shutdown

•Efficiencies to 83%

•700V Isolation, Up to 1544V on 48V Converters

•Power Density up to 11 Watts per Cubic Inch

•Five-Side Shielded Case

•Extended Range Input (2:1)

BOTTOM VIEW

SIDE VIEW

2.02

0.040 (1.02) DIA

(51.31)

6 PLACES

0.700				5
(17.78)
0.600			1		2.02
(15.24)			2
0.400				6	(51.31)
(10.16)
0.300
(7.62)
0.000			3	7
0.100
(2.54)
0.51
(13.0)
0.11	(2.8)	0.000	1.800	(45.72)	0.25	(6.35)	0.000	0.45	(11.43)

Mechanical tolerances unless otherwise noted:

X.XX dimensions: ±0.020 inches

X.XXX dimensions: ±0.005 inches

NOTES

(1)All parameters measured at Tc = 25°C, nominal input voltage and full rated load unless otherwise noted. Refer to the Technical Reference Section for the definition of terms, measurement circuits and other information.

(2)The Case is tied to the -Input, Pin 2.

(3)The functional temperature range is intended to give an additional data point for use in evaluating this power supply. At the low functional temperature the power supply will function with no side effects, however, sustained operation at the high functional temperature will reduce expected operational life. The data sheet specifications are not guaranteed beyond the case operating range.

(4)The case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated.

Rev. 04/2000

1

DFA20 SERIES – SINGLE OUTPUT

NOTES

(1)All parameters measured at Tc=25°C, nominal input voltage and full rated load unless otherwise noted. Refer to the Technical Reference Section for the definition of terms, measurement circuits and other information.

(2)Noise is measured per Technical Reference Section. Measurement bandwidth is 0-20 MHz for peakpeak measurements, 10 kHz to 1 MHz for RMS measurements. Output noise is measured with a 0.01µF ceramic in parallel with a 1µF/35V Tantalum capacitor located 1" away from the converter to simulate your PCB’s standard decoupling. Input reflected ripple is measured into a 10µH source impedance.

(3)Short term stability is specified after a 30 minute warmup at full load, constant line and recording the drift over a 24 hour period.

(4)The input ripple rejection is specified for DC to 120 Hz ripple with a modulation amplitude of 1% of Vin.

2