Datasheet

DATASHEET
DS_DIM3R3_09102010
5
ELECTRICAL CHARACTERISTICS CURVES
Figure 1: Input voltage turn-on threshold (2mS/div):
CH1: Vin (VRTN_AF reference to -48V_AF, 10V/div).
CH2: Iin (-48V_AF, 2A/div).
CH3: VRTN_OUT reference to –48V_OUT (10V/div).
Test conditions:
(1) Feed A=37Vdc (Von slew rate= 0.1V/ms); Feed B=0Vdc
(2) I(VRTN_OUT)=1A, I(3.3V)=0A,I(5V BLUE_LED_PWR)=0A.
(3) C2=220uF, C_hold=220uF
Figure 2: Input voltage turn-off threshold (2mS/div):
CH1: Vin (VRTN_AF reference to -48V_AF, 10V/div).
CH2: Iin (-48V_AF, 2A/div).
CH3: VRTN_OUT reference to. –48V_OUT (10V/div).
Test conditions:
(1) Feed A=37Vdc (Voff slew rate= 0.3V/ms); Feed B=0Vdc
(2) I(VRTN_OUT)=1A,I(3.3V)=0A,I(5V BLUE_LED PWR)=0A.
(3) C2=220uF, C_hold=220uF
Figure 3: Inrush current (2mS/div):
CH1: Vin (VRTN_AF reference to -48V_AF, 10V/div).
CH2: Iin (-48V_AF, 2A/div).
CH3: VRTN_OUT reference to –48V_OUT (10V/div).
Test conditions:
(1) Feed A=48Vdc, Feed B=0Vdc.
(2) I(VRTN_OUT)=1A, I(3.3V)=0A, I(5V BLUE_LED PWR)=0A.
(3) C2=220uF, C_hold=220uF
Figure 4: Oring for one feed loss (500µS/div):
CH1: IinA (2A/div)
CH2: IinB (2A/div).
CH3: VRTN_OUT reference to –48V_OUT (10V/div).
CH4: VMGMT_PWR (1V/div).
Test conditions:
(1) Feed A=60V, Feed B=48V;
(2) Q48SH12025: I(12 Vout)=22.5A, I(3.3V)=2.5A,
I(5V BLUE_LED PWR)=0A.
(3) C2=220uF, C_hold=220uF
CH 1
CH 2
CH 3
CH 1
CH 2
CH 3
CH 1
CH 2
CH 3
CH 4
CH 1
CH 2
CH 3