Powersolve Power Sink Option for SM800 - Manual (Page 2)

SM800 OPTION P245 - 248
Page 1 - 2 Datasheet - SM800 Power Sink 2007, rev. Sep.2011
Power Sink Spec i fi ca tions
SM7.5-80
option P245
SM18-50
option P246
SM70-AR-24
option P247 SM400-AR-4
option P248
Sink Power Rat ing
max. peak power (elec tron i cally lim ited)
max. con tinuous power (T
amb
. = 25 °C)
max. con tin u ous power (T
amb
. = 50 °C)
140 W
140 W
110 W
Max. du ra tion Sink Peak Power
P
sink
= 140 W, T
amb
. = 25 °C
Duty Cy cle for use at Peak Power
P sink = 140 W, T amb . = 25 °C
continuous
100%
Max. Sink Cur rent
(V
o
>= 2 V and P <= 140 W)
Lim ited at
36 A
Lim ited at
36 A
Lim ited at
25 A
Lim ited at
5 A
Pro tec tion Elec tronic Power Limit (140 W) lim its the cur rent.
The tem per a ture of the power sink is fan con trolled and
the cir cuit shuts down in case of ther mal over load.
Re cov ery time / De vi a tion
Vo = 6 V, I
o
: +30 A → –10 A
re cov ery within 100 mV / de vi a tion:
Vo = 15 V, I
o
: +20 A → –4 A
re cov ery within 100 mV / de vi a tion:
Vo = 24 V, I
o
: +15 A → –2 A
re cov ery within 100 mV / de vi a tion:
Vo = 60 V, I
o
: +9 A → –1 A
re cov ery within 100 mV / de vi a tion:
Vo = 150 V, I
o
: +3 A → –0.5 A
re cov ery within 1.0 V / de vi a tion:
Vo = 350 V, I
o
: +1 A → –0.1 A
re cov ery within 1.0 V / de vi a tion:
(load cur rent switches from pos i tive
to neg a tive)
di/dt = – 0.7 A/µs
200 µs / 0.15 V
-
-
-
-
-
note: val ues
are typ i cal
di/dt = – 0.7 A/µs
400 µs / 0.25 V
di/dt = – 0.5 A/µs
700 µs / 0.20 V
-
-
-
-
note: val ues
are typ i cal
-
di/dt = – 0.5 A/µs
700 µs / 0.85 V
di/dt = – 0.4 A/µs
800 µs / 0.75 V
di/dt =– 0.3 A/µs
4.0 ms / 0.65 V
-
-
note: val ues
are typ i cal
-
-
-
-
di/dt = – 0.1 A/µs
800 µs/ 4.0 V
di/dt = – 0.05 A/µs
2.0 ms / 2.7 V
note: val ues
are typ i cal
Pro gram ming Down Speed
Fall time at no load (90 - 10%)
Fall time at no load with out Power Sink
Unit with Fast Pro gram ming Option
Fall time at no load (90 - 10%)
Fall time at no load with out Power Sink
(7.5 → 0 V)
6.5 ms
5 s
P245+P250
120 µs
65 ms
(18 → 0 V)
17 ms
6 s
P246+P251
390 µs
210 ms
(70 → 0 V)
25 ms
4 s
P247+P252
1 ms
760 ms
(400 → 0 V)
19 ms
4.5 s
P248+P253
Not
pos si ble.
Notes:
SM70-AR-24 with Power Sink Op tion
fast dis charge of out put ca pac i tors
by the power sink circuit
trace: out put volt age
Volt age Pro gram ming Speed at NO LOAD
SM70-R-24 without Power Sink Op tion
slow re sponse time dur ing volt age step down,
time needed to dis charge the out put ca pac i tors
trace: out put volt age
Volt age Pro gram ming Speed at NO LOAD
• The maximum sink current at higher voltages will not be the maximum specified current due to the power limit.
For example at 30 V the maximum sink current will only be 4.7 A (30 V x 4.7 A = 140 W = maximum power).
• A higher sink current than the maximum current will cause the output voltage to rise.