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Powersolve Power Sink Option for SM3000 User Manual

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SM3000 - P127- P130

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Datasheet - SM3000 Power Sink

2003, rev. Sep.2011

SM45-70D with Power Sink Op tion

fast dis charge of out put ca pac i tors

by the power sink cir cuit

trace: out put volt age

Volt age Pro gram ming Speed at NO LOAD

SM45-70D with out 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

Power Sink Spec i fi ca tions

SM15-200D

option P127

SM30-100D

option P128

SM45-70D

option P129

SM70-45D

option P130

Sink Power Rating

max. peak power (elec tron i cally lim ited)
max. con tin u ous power (T

amb

. = 25 °C)

max. con tin u ous power (T

amb

. = 50 °C)

300 W

30 W

15 W

Max. du ra tion Sink Peak Power

P

sink

= 300 W, T

amb

. = 25 °C

Duty Cy cle for use at Peak Power

P

sink

= 300 W, T

amb

. = 25 °C

P

sink

<= 300 W, t

on

<= 15 s

t

on

= time, power dis si pa tion is > 0 W

t

off

= time, power dis si pa tion is 0 W

P

av

= P

peak

* t

on

/ (t

off

+ t

on

)

max. t

on

= 60 s, fol low ing t

off

=1200 s (for cool ing down)

t

on

<=15 s / t

off

>= 150 s

av er age power <= 30 W

Max. Sink Cur rent

(V

o

>= 2 V and P <= 300 W)

Lim ited at 70 A

Lim ited at 45 A

Pro tec tion

Elec tronic Power Limit (300 W) lim its the cur rent.

Sink cir cuit shuts down in case of ther mal over load

Re cov ery time / De vi a tion

Vo = 6 V, I

o

: +80 A → –20 A

re cov ery within 100 mV / de vi a tion:

Vo = 15 V, I

o

: +40 A → –10 A

re cov ery within 100 mV / de vi a tion:

Vo = 24 V, I

o

: +20 A → –6 A

re cov ery within 100 mV / de vi a tion:

Vo = 42 V, I

o

: +20 A → –3.5 A

re cov ery within 100 mV / de vi a tion:

Vo = 60 V, I

o

: +10 A → –2.5 A

re cov ery within 100 mV / de vi a tion:

(load cur rent switches from pos i tive to

neg a tive)

di/dt = – 1.5 A/µs

200 µs / 0.30 V

di/dt = – 1.0 A/µs

500 µs / 0.15 V

-
-

-
-

-
-

note: val ues

are typ i cal

di/dt = – 1.5 A/µs

300 µs / 0.60 V

di/dt = – 0.9 A/µs

350 µs / 0.30 V

di/dt = – 0.5 A/µs

500 µs / 0.30 V

-
-

-
-

note: val ues

are typ i cal

-
-

di/dt = – 0.9 A/µs

200 µs / 0.45 V

di/dt = – 0.6 A/µs

200 µs / 0.40 V

di/dt = – 0.6 A/µs

500 µs / 0.45 V

-
-

note: val ues

are typ i cal

-
-

di/dt = – 0.9 A/µs

200 µs / 0.75 V

di/dt = – 0.6 A/µs

200 µs / 0.45 V

di/dt = – 0.6 A/µs

480 µs / 0.45 V

di/dt = – 0.3 A/µs

1.0 ms / 0.50 V

note: val ues

are typ i cal

Pro gram ming Down Speed

Fall time at no load (90 - 10%)
(also see fig ures be low)
Fall time at no load with out Power Sink

(15 → 0 V)

6 ms

6 s

(30 → 0 V)

10 ms

8 s

(45 → 0 V)

6 ms

2 s

(70 → 0 V)

10 ms

5 s

Par al lel and Se ries op er a tion

Re fer to power sink man ual for
de tails and re stric tions.

Us ing mul ti ple units in par al lel op er a tion, only one unit can have a power sink .

Us ing mul ti ple units in se ries op er a tion, all units must have a power sink .

Notes:

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 10 A (30 V x 10 A = 300 W = maximum power).

A higher sink current than the maximum current will cause the output voltage to rise.