hip6301vcbza-t Intersil Corporation, hip6301vcbza-t Datasheet - Page 12

• Manufacturer Part Number: hip6301vcbza-t
• Description: Microprocessor Core Voltage Regulator Multiphase Buck Pwm Controller
• Manufacturer: Intersil Corporation

At the end of the delay, PWM outputs are restarted and the
soft-start ramp is initiated. If a short is present at that time,
the cycle is repeated. This is the hiccup mode.
Figure 8 shows the supply shorted under operation and the
hiccup operating mode described above. Note that due to
the high short circuit current, overcurrent is detected before
completion of the start-up sequence so the delay is not quite
as long as the normal soft-start cycle.
CORE Voltage Programming
The voltage identification pins (VID0, VID1, VID3, and VID4)
set the CORE output voltage. Each VID pin is pulled to 2.5V by
an internal 20µA current source and accepts open-collector/
open-drain/open-switch-to-ground or standard low-voltage
TTL or CMOS signals.
Table 1 shows the nominal DAC voltage as a function of the
VID codes. The power supply system is ±0.8% accurate over
the operating temperature and voltage range.
FIGURE 8. SHORT APPLIED TO SUPPLY AFTER POWER-UP
VID4
1
1
1
1
1
1
1
1
1
1
1
SHORT APPLIED HERE
HICCUP MODE. SUPPLY POWERED BY ATX SUPPLY
TABLE 1. VOLTAGE IDENTIFICATION CODES
ATX SUPPLY ACTIVATED BY ATX “PS-ON PIN”
CORE LOAD CURRENT = 31A, 5V LOAD = 5A
VID3
1
1
1
1
1
1
1
1
0
0
0
SUPPLY FREQUENCY = 200kHz, V IN = 12V
VID2
1
1
1
1
0
0
0
0
1
1
1
12
VID1
1
1
0
0
1
1
0
0
1
1
0
VID0
1
0
1
0
1
0
1
0
1
0
1
HIP6301V, HIP6302V
PGOOD
SHORT
CURRENT
50A/Div
VDAC
1.100
1.125
1.150
1.175
1.200
1.225
1.250
1.275
1.300
1.325
Off
TABLE 1. VOLTAGE IDENTIFICATION CODES (Continued)
VID4
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID3
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
VID2
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
VID1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
VID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
December 27, 2004
VDAC
1.350
1.375
1.400
1.425
1.450
1.475
1.500
1.525
1.550
1.575
1.600
1.625
1.650
1.675
1.700
1.725
1.750
1.775
1.800
1.825
1.850
FN9034.2