HIP6004ECV Intersil, HIP6004ECV Datasheet - Page 6

• Manufacturer Part Number: HIP6004ECV
• Description: IC CTRLR PWM VOLTAGE MON 20TSSOP
• Manufacturer: Intersil

Specifications of HIP6004ECV

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 100%
• Voltage - Supply: 5 V ~ 12 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-TSSOP
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The overcurrent function cycles the soft-start function in a
hiccup mode to provide fault protection. A resistor (R
programs the overcurrent trip level. An internal 200µA current
sink develops a voltage across R
V
referenced to V
overcurrent function initiates a soft-start sequence. The soft-
start function discharges C
inhibits PWM operation. The soft-start function recharges
C
clamped to the SS voltage. Should an overload occur while
recharging C
while fully charging C
shows this operation with an overload condition. Note that the
inductor current increases to over 15A during the C
charging interval and causes an overcurrent trip. The
converter dissipates very little power with this method. The
measured input power for the conditions of Figure 4 is 2.5W.
The overcurrent function will trip at a peak inductor current
(I
I
PEAK
IN
PEAK)
VID25
SS
mV
15A
10A
. When the voltage across the upper MOSFET (also
0
1
0
1
0
1
0
1
0
1
, and PWM operation resumes with the error amplifier
5A
0A
4V
2V
0V
=
determined by:
I
---------------------------------------------------- -
OCSET
FIGURE 4. OVER-CURRENT OPERATION
VID3
0
0
0
0
0
0
0
0
0
0
SS
r
IN
DS ON
, the soft-start function inhibits PWM operation
PIN NAME
) exceeds the voltage across R
x R
(
VID2
OCSET
SS
1
1
0
0
0
0
0
0
0
0
)
to 4V to complete its cycle. Figure 4
TIME (20ms/DIV.)
SS
VID1
0
0
1
1
1
1
0
0
0
0
with a 10µA current sink and
6
OCSET
VID0
0
0
1
1
0
0
1
1
0
0
that is referenced to
VOLTAGE DACOUT
NOMINAL OUTPUT
TABLE 1. OUTPUT VOLTAGE PROGRAM
OCSET
SS
OCSET
1.050
1.075
1.100
1.125
1.150
1.175
1.200
1.225
1.250
1.275
, the
HIP6004E
)
VID25
mV
0
1
0
1
0
1
0
1
0
1
where I
typical). The OC trip point varies mainly due to the
MOSFET’s r
in the normal operating load range, find the R
from the equation above with:
For an equation for the ripple current see the section under
component guidelines titled “Output Inductor Selection”.
A small, ceramic capacitor should be placed in parallel with
R
presence of switching noise on the input voltage.
Output Voltage Program
The output voltage of a HIP6004E converter is programmed to
discreet levels between 1.05V
identification (VID) pins program an internal voltage reference
(DACOUT) with a TTL-compatible 5-bit digital-to-analog
converter (DAC). The level of DACOUT also sets the PGOOD
and OVP thresholds. Table 1 specifies the DACOUT voltage
for the 32 different combinations of connections on the VID
pins. The output voltage should not be adjusted while the
converter is delivering power. Remove input power before
changing the output voltage. Adjusting the output voltage
during operation could toggle the PGOOD signal and exercise
the overvoltage protection.
Application Guidelines
Layout Considerations
As in any high frequency switching converter, layout is very
important. Switching current from one power device to another
can generate voltage transients across the impedances of the
interconnecting bond wires and circuit traces. These
interconnecting impedances should be minimized by using
wide, short-printed circuit traces. The critical components
should be located as close together as possible, using ground
plane construction or single point grounding.
1. The maximum r
2. The minimum I
3. Determine I
OCSET
where ∆I is the output inductor ripple current.
VID3
OCSET
1
1
1
1
1
1
1
1
1
1
to smooth the voltage across R
PIN NAME
DS(ON)
VID2
is the internal OCSET current source (200µA
PEAK
1
1
0
0
0
0
0
0
0
0
OCSET
DS(ON)
variations. To avoid overcurrent tripping
for
VID1
0
0
1
1
1
1
0
0
0
0
at the highest junction temperature.
from the specification table.
I
PEAK
DC
VID0
>
and 1.825V
0
0
1
1
0
0
1
1
0
0
I
OUT MAX
(
OCSET
VOLTAGE DACOUT
NOMINAL OUTPUT
)
DC
OCSET
+
(
1.450
1.475
1.500
1.525
1.550
1.575
1.600
1.625
1.650
1.675
. The voltage
∆I
in the
) 2 ⁄
resistor
,