Datel 20A manual Typical Performance Curves for 12VOUT Models

USQ Series 2 0 A , S I N G L E O U T P U T D C / D C C O N V E R T E R S

Typical Performance Curves for 12VOUT Models

USQ-12/8.3-D48 Efficiency vs. Line Voltage and Load Current

	95
	90
	85
)	80
(%
Efficiency	75
	70				VIN = 36V
	65			VIN = 48V
	60			VIN = 75V
	55
	0.83	1.66	2.49	3.32	4.15	4.98	5.81	6.64	7.47	8.3

Load Current (Amps)

Start-Up from VIN

(VIN = 48V, IOUT = 8.3A, COUT = 10µF tantalum 1µF ceramic.)

Output Current (Amps)

USQ-12/8.3-D48: Output Current vs. Ambient Temperature

(Transverse air flow, pin 1 to pin 3; VIN = 48V, no heat sink.)

9

8

7

600 lfm

6

400 lfm

5

200 lfm

4

Natural Convection

3

2

1

0

20 25 30 35 40 45 50 55 60 65 70 75 80 85

Ambient Temperature (°C)

USQ-12/8.3-D48: Output Current vs. Ambient Temperature

(Longitudinal air flow, pin 1 to pin 3; VIN = 48V, no heat sink.)

+Input (pin 3)

20V/div

12VOUT (pin 8)

5V/div

Output Current (Amps)

10

8

200 lfm

400 lfm

6

4

Natural Convection

2

600 lfm

2msec/div

0
–40	–10	0	10	20	30	40	50	60	70	80	90	100

Ambient Temperature (°C)

The USQ Series 12V models are discontinued. These Performance Curves are for documentation purposes only. Refer to DATEL's ULQ or UVQ series for alternate models.

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