Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

HIP6303 Datasheet(PDF) 15 Page - Intersil Corporation

Part No. HIP6303
Description  Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Download  17 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

HIP6303 Datasheet(HTML) 15 Page - Intersil Corporation

Back Button HIP6303 Datasheet HTML 9Page - Intersil Corporation HIP6303 Datasheet HTML 10Page - Intersil Corporation HIP6303 Datasheet HTML 11Page - Intersil Corporation HIP6303 Datasheet HTML 12Page - Intersil Corporation HIP6303 Datasheet HTML 13Page - Intersil Corporation HIP6303 Datasheet HTML 14Page - Intersil Corporation HIP6303 Datasheet HTML 15Page - Intersil Corporation HIP6303 Datasheet HTML 16Page - Intersil Corporation HIP6303 Datasheet HTML 17Page - Intersil Corporation  
Zoom Inzoom in Zoom Outzoom out
 15 / 17 page
background image
15
Output Inductor Selection
One of the parameters limiting the converter’s response to a
load transient is the time required to change the inductor
current. Small inductors in a multi-phase converter reduces
the response time without significant increases in total ripple
current.
The output inductor of each power channel controls the
ripple current. The control IC is stable for channel ripple
current (peak-to-peak) up to twice the average current. A
single channel’s ripple current is approximately:
The current from multiple channels tend to cancel each other
and reduce the total ripple current. Figure 12 gives the total
ripple current as a function of duty cycle, normalized to the
parameter
at zero duty cycle. To determine
the total ripple current from the number of channels and the
duty cycle, multiply the y-axis value by
.
Small values of output inductance can cause excessive power
dissipation. The HIP6303 is designed for stable operation for
ripple currents up to twice the load current. However, for this
condition, the RMS current is 115% above the value shown in
the following MOSFET Selection and Considerations section.
With all else fixed, decreasing the inductance could increase
the power dissipated in the MOSFETs by 30%.
Input Capacitor Selection
The important parameters for the bulk input capacitors are
the voltage rating and the RMS current rating. For reliable
operation, select bulk input capacitors with voltage and
current ratings above the maximum input voltage and largest
RMS current required by the circuit. The capacitor voltage
rating should be at least 1.25 times greater than the
maximum input voltage and a voltage rating of 1.5 times is a
conservative guideline. The RMS current required for a
multi-phase converter can be approximated with the aid of
Figure 13.
First determine the operating duty ratio as the ratio of the
output voltage divided by the input voltage. Find the Current
Multiplier from the curve with the appropriate power
channels. Multiply the current multiplier by the full load
output current. The resulting value is the RMS current rating
required by the input capacitor.
Use a mix of input bypass capacitors to control the voltage
overshoot across the MOSFETs. Use ceramic capacitance
for the high frequency decoupling and bulk capacitors to
supply the RMS current. Small ceramic capacitors should be
placed very close to the drain of the upper MOSFET to
suppress the voltage induced in the parasitic circuit
impedances.
For bulk capacitance, several electrolytic capacitors
(Panasonic HFQ series or Nichicon PL series or Sanyo
MV-GX or equivalent) may be needed. For surface mount
designs, solid tantalum capacitors can be used, but caution
must be exercised with regard to the capacitor surge current
rating. These capacitors must be capable of handling the
surge-current at power-up. The TPS series available from
AVX, and the 593D series from Sprague are both surge
current tested.
MOSFET Selection and Considerations
In high-current PWM applications, the MOSFET power
dissipation, package selection and heatsink are the
dominant design factors. The power dissipation includes two
loss components; conduction loss and switching loss. These
losses are distributed between the upper and lower
MOSFETs according to duty factor (see the following
equations). The conduction losses are the main component
of power dissipation for the lower MOSFETs, Q2 and Q4 of
Figure 1. Only the upper MOSFETs, Q1 and Q3 have
significant switching losses, since the lower device turns on
and off into near zero voltage.
The equations assume linear voltage-current transitions and
do not model power loss due to the reverse-recovery of the
lower MOSFETs body diode. The gate-charge losses are
∆I
V
IN
V
OUT
F
SW
L
×
--------------------------------
V
OUT
V
IN
----------------
×
=
Vo
() LxF
SW
()
Vo
() LxF
SW
()
1.0
0.8
0.6
0.4
0.2
0
0
0.1
0.2
0.3
0.4
0.5
DUTY CYCLE (VO/VIN)
SINGLE
CHANNEL
2 CHANNEL
3 CHANNEL
4 CHANNEL
FIGURE 12. RIPPLE CURRENT vs DUTY CYCLE
0.5
0.4
0.3
0.2
0.1
0
0
0.1
0.2
0.3
0.4
0.5
DUTY CYCLE (VO/VIN)
SINGLE
CHANNEL
3 CHANNEL
4 CHANNEL
2 CHANNEL
FIGURE 13. CURRENT MULTIPLIER vs DUTY CYCLE
HIP6303


Similar Part No. - HIP6303

ManufacturerPart No.DatasheetDescription
Renesas Technology Corp
Renesas Technology Corp
HIP6303 RENESAS-HIP6303 Datasheet
771Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6303CB RENESAS-HIP6303CB Datasheet
771Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6303CB-T RENESAS-HIP6303CB-T Datasheet
771Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6303EVAL1 RENESAS-HIP6303EVAL1 Datasheet
771Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
More results

Similar Description - HIP6303

ManufacturerPart No.DatasheetDescription
Intersil Corporation
Intersil Corporation
ISL6553 INTERSIL-ISL6553_04 Datasheet
672Kb / 15P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Renesas Technology Corp
Renesas Technology Corp
HIP6311A RENESAS-HIP6311A Datasheet
778Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6552 RENESAS-ISL6552 Datasheet
863Kb / 18P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Intersil Corporation
Intersil Corporation
HIP6302 INTERSIL-HIP6302_04 Datasheet
441Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6311 INTERSIL-HIP6311_04 Datasheet
442Kb / 17P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6302CBZA-T INTERSIL-HIP6302CBZA-T Datasheet
459Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
HIP6304 INTERSIL-HIP6304 Datasheet
176Kb / 14P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Renesas Technology Corp
Renesas Technology Corp
HIP6311 RENESAS-HIP6311 Datasheet
802Kb / 17P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Intersil Corporation
Intersil Corporation
HIP6301 INTERSIL-HIP6301 Datasheet
191Kb / 16P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
ISL6553 INTERSIL-ISL6553 Datasheet
182Kb / 15P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Renesas Technology Corp
Renesas Technology Corp
HIP6301 RENESAS-HIP6301 Datasheet
804Kb / 17P
   Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
More results


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz