hip6016cb Intersil Corporation, hip6016cb Datasheet - Page 9

• Manufacturer Part Number: hip6016cb
• Description: Advanced Pwm And Dual Linear Power Control
• Manufacturer: Intersil Corporation

Resistor R
PWM converter. As shown in Figure 9, the internal 200 A
referenced to V
comparator (OVER-CURRENT1). When the voltage across the
upper MOSFET (V
comparator trips to set the over-current latch. Both V
V
R
MOSFET switching. The over-current function will trip at a peak
inductor current (I
The OC trip point varies with MOSFETs’ temperature. To avoid
over-current tripping in the normal operating load range,
determine the R
For an equation for the output inductor ripple current see
the section under component guidelines titled ‘Output
Inductor Selection’.
OUT1 Voltage Program
The output voltage of the PWM converter is programmed to
discrete levels between 1.3V
designed to supply the microprocessor core voltage. The
voltage identification (VID) pins program an internal voltage
reference (DACOUT) through a TTL-compatible 5-bit
digital-to-analog converter. The level of DACOUT also sets
the PGOOD and OVP thresholds. Table 1 specifies the
DACOUT voltage for the different combinations of
connections on the VID pins. The VID pins can be left open
for a logic 1 input, because they are internally pulled up to
+5V by a 10 A (typically) current source. Changing the VID
Application Guidelines
Soft-Start Interval
Initially, the soft-start function clamps the error amplifier’s
output of the PWM converter. After the output voltage
increases to approximately 80% of the set value, the
reference input of the error amplifier is clamped to a voltage
proportional to the SS pin voltage. Both linear outputs follow
a similar start-up sequence. The resulting output voltage
sequence is shown in Figure 6.
current sink develops a voltage across R
inputs during operation is not recommended. The sudden
change in the resulting reference voltage could toggle the
PGOOD signal and exercise the over-voltage protection.
‘11111’ VID pin combination results in an INHIBIT, which
disables the IC and the open-collector at the PGOOD pin.
I PEAK =
1. The maximum r
2. The minimum I
3. Determine I
DS
OCSET
temperature.
are referenced to V
I is the output inductor ripple current.
helps V
I OCSET R OCSET
---------------------------------------------------------
OCSET
IN
r DS ON
OCSET
PEAK
OCSET
. The DRIVE signal enables the over-current
PEAK)
programs the over-current trip level for the
DS(ON)
OCSET
DS(ON)
for I
resistor from the equation above with:
IN
determined by:
track the variations of V
) exceeds V
2-204
PEAK
and a small capacitor across
from the specification table.
at the highest junction
DC
> I
and 3.5V
OUT(MAX)
SET
OCSET
, the over-current
DC
+ ( I) / 2, where
. This output is
IN
(V
SET
due to
SET
) that is
and
HIP6016
The soft-start function controls the output voltage rate of rise
to limit the current surge at start-up. The soft-start interval is
programmed by the soft-start capacitor, C
a faster soft-start interval increases the peak surge current.
The peak surge current occurs during the initial output
voltage rise to 80% of the set value.
NOTE: 0 = connected to GND or V
through pull-up resistors.
VID4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TABLE 1. V
VID3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
PIN NAME
VID2
OUT1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
VOLTAGE PROGRAM
SS
VID1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
, 1 = open or connected to 5V
VID0
SS
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
. Programming
NOMINAL
VOLTAGE
DACOUT
INHIBIT
OUT1
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5