ISL6118EVAL1 Intersil, ISL6118EVAL1 Datasheet - Page 5

• Manufacturer Part Number: ISL6118EVAL1
• Description: EVALUATION PLATFORM FOR ISL6118
• Manufacturer: Intersil

Specifications of ISL6118EVAL1

• Main Purpose: Power Management, Hot Swap Controller
• Utilized Ic / Part: ISL6118
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -

J1
+VBUS
ISL6116 (-48V)
Figure 11 and 12 show the ISL6116 in -48V Low Side Switch
Application. The eval board uses a HIP5600 to bias the
ISL6116 12V higher than the -48V. Note C2 was intentionally
left empty. Tests were done at -36V to keep the power
dissipated to the load low. Results would be essentially the
same at -48V.
In Figure 13, notice soft-start ramp up of GATE upon LOGIN
is being driven low. Keep in mind that PGOOD is disabled in
ISL6116 (-48V) Figures
HI J2
GND
I
CR
R
G
1
FIGURE 11. ISL6116 EVAL BOARD SCHEMATIC
R11
= 2.4A
R6
LOAD
C1
FIGURE 13. TURN ON VIA LOGIN
C3
D2
J3 LO
R7
Ch1 LOGIN
Q2
DD1
3.3V
ISL6116
U1
R5
R1
R2
5
Ch3 CTIM
C2
Ch4 I
LOAD
R9
R8
J4
-VBUS
-48V
C2 = EMPTY
OT1
Ch2 GATE
Technical Brief 457
LOGIN
TP9
R10
ON
OFF
0-5V
low side applications. Upon an OC at turn on, GATE begins
to soft-start, then attempts to regulate, then is shut down
(see Figure 14). Note CTIM’s behavior due to the eval board
setup (C2 DNP).
In Figure 15, the load is switched from an open to 2Ω. The
controller immediately pulls GATE down, CTIM up, and the
load is isolated. When LOGIN is forced high, the controller
shuts down (see Figure 16).
I
CR
= 2.4A
FIGURE 12. ISL6116 EVAL BOARD PICTURE
FIGURE 14. TURN ON INTO OC
Ch1 LOGIN
Ch2 GATE
Ch3 CTIM
Ch4 I
LOAD
April 18, 2006
TB457.0