HIP6021CB-T Intersil, HIP6021CB-T Datasheet - Page 9

• Manufacturer Part Number: HIP6021CB-T
• Description: IC PWM TRPL PWR CONTROL 28-SOIC
• Manufacturer: Intersil

Specifications of HIP6021CB-T

• Pwm Type: Voltage Mode
• Number Of Outputs: 4
• Frequency - Max: 215kHz
• Duty Cycle: 100%
• Voltage - Supply: 10.8 V ~ 13.2 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: Yes
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• Frequency-max: 215kHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A resistor (R
the PWM converter. As shown in Figure 6, the internal
200µA current sink, I
R
signal enables the over-current comparator (OVER-
CURRENT). When the voltage across the upper MOSFET
(V
set the over-current latch. Both V
referenced to V
helps V
switching. The over-current function will trip at a peak
inductor current (I
I
PEAK
OCSET
DS
i
OC
D
10V
CURRENT
0V
4V
2V
0V
0A
) exceeds V
×
OVER-
OVER-CURRENT TRIP:
PWM
=
r
DS ON
OCSET
I
--------------------------------------------------- -
(V
OCSET
(
V
FIGURE 5. OVER-CURRENT OPERATION
FIGURE 6. OVER-CURRENT DETECTION
T0
SET
+
DS
-
COUNT
OCSET
r
)
= 1
T1
DS ON
OVERLOAD
>
>
APPLIED
track the variations of V
) that is referenced to V
IN
V
CONTROL
×
I
(
OCSET
SET
SET
R
PEAK)
GATE
and a small capacitor across R
OCSET
) programs the over-current trip level for
)
OCSET
, the over-current comparator trips to
I
OCSET
DRIVE
200µA
T2
×
OCSET
determined by:
R
OCSET
develops a voltage across
COUNT
9
TIME
= 2
REPORTED
VCC
SET
FAULT
UGATE
PHASE
R
V PHASE
V OCSET
and V
OCSET
V
IN
SET
IN
T3
. The DRIVE
due to MOSFET
+
DS
=
=
V
COUNT
are
V IN V DS
IN
i
V IN V SET
D
V
= 3
+
OCSET
T4
= +5V
DS
–
–
HIP6021
The OC trip point varies with MOSFET’s r
temperature variations. To avoid over-current tripping in the
normal operating load range, determine the R
resistor 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 PWM 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. 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
10µA current source. Changing the VID inputs during
operation is not recommended and could toggle the PGOOD
signal and exercise the over-voltage protection. ‘11111’ VID
pin combination disables the IC and opens the PGOOD pin.
1. The maximum r
2. The minimum I
3. Determine I
VID4
∆I is the output inductor ripple current.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
TABLE 1. OUT1 VOLTAGE PROGRAM
VID3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
PEAK
OCSET
DS(ON)
PIN NAME
for I
VID2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
PEAK
at the highest junction temperature.
from the specification table.
DC
> I
VID1
and 3.5V
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
OUT(MAX)
DC
VID0
DS(ON)
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
. This output
+ (∆I)/2, where
OCSET
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
0