HIP6020ACB Intersil Corporation, HIP6020ACB Datasheet - Page 9

• Manufacturer Part Number: HIP6020ACB
• Description: Advanced Dual PWM and Dual Linear Power Controller
• Manufacturer: Intersil Corporation

Resistors (R
trip levels for each PWM converter. As shown in Figure 9, the
internal 200 A current sink (I
R
enables the over-current comparator (OVER-CURRENT1 or
OVER-CURRENT2). 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 MOSFET’s r
temperature variations. To avoid over-current tripping in the
normal operating load range, determine the ROCSET
resistor value from the equation above with:
For an equation for the ripple current see the section under
component guidelines titled ‘Output Inductor Selection’.
OUT1 Voltage Program
The output voltage of the PWM1 converter is programmed to
discrete levels between 1.3V
(OUT1) is designed to supply the core voltage of Intel’s
advanced microprocessors. The voltage 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 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 an internal voltage of about 5V by a 10 A current
I
PEAK
1. The maximum r
2. The minimum I
3. Determine I
DS
OCSET
OCSET
i D
OC
CURRENT
where I is the output inductor ripple current.
are referenced to V
OVER-
OVER-CURRENT TRIP:
PWM
r DS ON
=
I
--------------------------------------------------- -
(V
helps V
OCSET
V
FIGURE 6. OVER-CURRENT DETECTION
SET
+
DS
-
OCSET1
DS(ON)
r
DS ON
>
>
) that is referenced to V
V
CONTROL
I
OCSET
PEAK
OCSET
PEAK)
SET
GATE
R
) exceeds V
DS(ON)
OCSET
OCSET
and R
for I
I
OCSET
DRIVE
200 A
IN
determined by:
track the variations of V
OCSET
R
and a small capacitor across
OCSET2
PEAK
OCSET
at the highest junction temperature
from the specification table
OCSET
4-9
DC
SET
and 3.5V
VCC
> I
) program the over-current
) develops a voltage across
, the over-current
UGATE
OUT(MAX)
PHASE
R
V
V OCSET
IN
V
OCSET
PHASE
SET
. The DRIVE signal
DC
DS(ON)
+
. This output
=
=
+ ( I) / 2,
IN
V
V
IN
V IN V SET
i
D
due to
V
IN
+
= +5V
DS
SET
–
–
V
DS
and
HIP6020A
source. Changing the VID inputs during operation is not
recommended and could toggle the PGOOD signal and
exercise the over-voltage protection.
OUT2 Voltage Selection
The AGP regulator output voltage is internally set to 1.5V or
continuously on, based on the status of the SELECT pin.
SELECT pin is internally pulled ‘high’, such that left open,
the standard buck MOSFET will be continuously on, V
being equal to the input voltage (3.3V) less any voltage drop
across the MOSFET’s r
The other setting available is 1.5V, which can be obtained by
grounding the SELECT pin using a jumper or another
suitable method capable of sinking a few tens of
microamperes. The status of the SELECT pin cannot be
changed during operation of the IC without possibly causing
a fault condition.
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
TABLE 1. OUT1 VOLTAGE PROGRAM
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
PIN NAME
VID2
DS(ON)
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
and output inductor’s DCR.
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
VID0
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
NOMINAL
VOLTAGE
DACOUT
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
2.00
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
OUT2