HIP6302EVAL1 Intersil, HIP6302EVAL1 Datasheet - Page 4

• Manufacturer Part Number: HIP6302EVAL1
• Description: EVALUATION BOARD HIP6302
• Manufacturer: Intersil

Specifications of HIP6302EVAL1

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.7V
• Current - Output: 35A
• Voltage - Input: 5V, 12V
• Regulator Topology: Buck
• Board Type: Fully Populated
• Utilized Ic / Part: HIP6302
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Frequency - Switching: -

After the initial over-current trip, the HIP6302 waits for a
period of time equal to 2048/f
frequency) before initiating a soft-start cycle. If the over-load
condition remains, another over-current trip will occur before
the end of the soft-start sequence. This repetitive over-
current cycling is illustrated in Figure 8, and will continue
indefinitely unless the fault is cleared or power to the
converter is removed. Because of the wait period, the worst
case power delivered during overcurrent cycling is equal to
45% of the power delivered during normal operation at full
load. Therefore, indefinite over-current cycling does not
create a thermal problem for the circuit.
Efficiency
Figure 9 shows the efficiency versus current plot for the
HIP6302EVAL1 for 5A through 35A. The measurements
were made at room temperature with natural convection
cooling only..
0A
0V
90
85
80
75
70
5
FIGURE 8. OVERCURRENT BEHAVIOR
FIGURE 9. EFFICIENCY vs CURRENT
10
15
CURRENT (AMPERES)
5ms/DIV
SW
4
OUTPUT CURRENT, 20A/DIV
20
(f
SW
CORE VOLTAGE,
500mV/DIV
is the switching
25
Application Note AN9888
30
35
Summary
The HIP6302EVAL1 is intended to provide a convenient
platform to evaluate the performance of the HIP6302 -
HIP6601A chip set in the specific implementation indicated
in Table 1. The design demonstrates a favorable trade off
between low cost, high efficiency, and small footprint. The
following pages include schematic, bill of materials, and
layout drawings to facilitate implementation of this solution.
The evaluation board is simple and convenient to operate,
and test points are available to evaluate the most commonly
tested parameters. Example waveforms are given for
reference.
The HIP6302 and HIP6601A provide a versatile 2-phase
power solution for low-voltage applications from 25A to
approximately 40A, and together they result in the most
effective solution available.
References
For Intersil documents available on the internet, see web site
http://www.intersil.com/
Intersil Technical Support 1 (888) INTERSIL
[1] HIP6302 Data Sheet, Intersil Corporation, Power
[2] HIP6601A, HIP6603A Data Sheet, Intersil Corporation,
[3] HIP6602A Data Sheet, Intersil Corporation, Power
Management Products Division, 2000.
(http://www.intersil.com/).
Power Management Products Division, 2000.
Management Products Division, 2000.