Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

HIP6604BCRZ Datasheet(PDF) 8 Page - Intersil Corporation

Part # HIP6604BCRZ
Description  Synchronous Rectified Buck MOSFET Drivers
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

HIP6604BCRZ Datasheet(HTML) 8 Page - Intersil Corporation

Back Button HIP6604BCRZ Datasheet HTML 4Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 5Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 6Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 7Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 8Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 9Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 10Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 11Page - Intersil Corporation HIP6604BCRZ Datasheet HTML 12Page - Intersil Corporation  
Zoom Inzoom in Zoom Outzoom out
 8 / 12 page
background image
8
FN9072.8
May 1, 2012
desired frequency for the selected MOSFETs. The power
dissipated by the driver is approximated as:
where fsw is the switching frequency of the PWM signal. VU and
VL represent the upper and lower gate rail voltage. QU and QL is
the upper and lower gate charge determined by MOSFET selection
and any external capacitance added to the gate pins. The IDDQ
VCC product is the quiescent power of the driver and is typically
30mW.
The power dissipation approximation is a result of power
transferred to and from the upper and lower gates. But, the internal
bootstrap device also dissipates power on-chip during the refresh
cycle. Expressing this power in terms of the upper MOSFET total
gate charge is explained below.
The bootstrap device conducts when the lower MOSFET or its
body diode conducts and pulls the PHASE node toward GND.
While the bootstrap device conducts, a current path is formed that
refreshes the bootstrap capacitor. Since the upper gate is driving a
MOSFET, the charge removed from the bootstrap capacitor is
equivalent to the total gate charge of the MOSFET. Therefore, the
refresh power required by the bootstrap capacitor is equivalent to
the power used to charge the gate capacitance of the MOSFET.
where QLOSS is the total charge removed from the bootstrap
capacitor and provided to the upper gate load.
The 1.05 factor is a correction factor derived from the following
characterization. The base circuit for characterizing the drivers for
different loading profiles and frequencies is provided. CU and CL
are the upper and lower gate load capacitors. Decoupling capacitors
[0.15
μF] are added to the PVCC and VCC pins. The bootstrap
capacitor value is 0.01
μF.
In Figure 1, CU and CL values are the same and frequency is
varied from 50kHz to 2MHz. PVCC and VCC are tied together to
a +12V supply. Curves do exceed the 800mW cutoff, but
continuous operation above this point is not recommended.
Figure 2 shows the dissipation in the driver with 3nF loading on
both gates and each individually. Note the higher upper gate power
dissipation which is due to the bootstrap device refresh cycle.
Again PVCC and VCC are tied together and to a +12V supply.
Test Circuit
The impact of loading on power dissipation is shown in
Figure 3. Frequency is held constant while the gate capacitors are
varied from 1nF to 5nF. VCC and PVCC are tied together and to a
+12V supply. Figures 4, 5 and 6 show the same characterization for
the HIP6603B with a +5V supply on PVCC and VCC tied to a +12V
supply.
Since both upper and lower gate capacitance can vary,
Figure 8 shows dissipation curves versus lower gate capacitance with
upper gate capacitance held constant at three different values. These
curves apply only to the HIP6601B due to power supply
configuration.
P1.05f
sw
3
2
--- V
UQU
V
LQL
+
⎝⎠
⎛⎞
I
DDQVCC
+
=
(EQ. 2)
P
REFRESH
1
2
--- f
SW QLOSS
V
PVCC
1
2
--- f
SW QU
V
U
==
(EQ. 3)
BOOT
UGATE
PHASE
LGATE
PWM
PVCC
GND
VCC
0.15
μF
0.15
μF
100k
Ω
2N7002
2N7002
0.01
μF
CL
CU
+5V OR +12V
+12V
+5V OR +12V
FIGURE 1. POWER DISSIPATION vs FREQUENCY
1000
800
600
400
200
0
500
1000
1500
2000
FREQUENCY (kHz)
CU = CL = 3nF
VCC = PVCC = 12V
CU = CL = 1nF
CU = CL = 2nF
CU = CL = 4nF
CU = CL = 5nF
FIGURE 2. 3nF LOADING PROFILE
1000
800
600
400
200
0
500
1000
1500
2000
FREQUENCY (kHz)
CU = CL = 3nF
VCC = PVCC = 12V
CU = 3nF
CU = 0nF
CL = 0nF
CL = 3nF
HIP6601B, HIP6603B, HIP6604B


Similar Part No. - HIP6604BCRZ

ManufacturerPart #DatasheetDescription
logo
Intersil Corporation
HIP6604BCRZ INTERSIL-HIP6604BCRZ Datasheet
256Kb / 12P
   Drives Two N-Channel MOSFETs
HIP6604BCRZ INTERSIL-HIP6604BCRZ Datasheet
258Kb / 12P
   Synchronous Rectified Buck MOSFET Drivers
May 1, 2012
logo
Renesas Technology Corp
HIP6604BCRZ RENESAS-HIP6604BCRZ Datasheet
682Kb / 14P
   Synchronous Rectified BuckMOSFET Drivers
More results

Similar Description - HIP6604BCRZ

ManufacturerPart #DatasheetDescription
logo
Intersil Corporation
HIP6601A INTERSIL-HIP6601A Datasheet
516Kb / 11P
   Synchronous Rectified Buck MOSFET Drivers
logo
Richtek Technology Corp...
RT9611A RICHTEK-RT9611A Datasheet
228Kb / 15P
   Synchronous Rectified Buck MOSFET Drivers
logo
Intersil Corporation
HIP6601 INTERSIL-HIP6601 Datasheet
84Kb / 8P
   Synchronous-Rectified Buck MOSFET Drivers
logo
Richtek Technology Corp...
RT9618 RICHTEK-RT9618_11 Datasheet
469Kb / 12P
   Synchronous-Rectified Buck MOSFET Drivers
RT9619 RICHTEK-RT9619_11 Datasheet
427Kb / 11P
   Synchronous-Rectified Buck MOSFET Drivers
logo
Intersil Corporation
ISL6625ACRZ-T INTERSIL-ISL6625ACRZ-T Datasheet
412Kb / 10P
   Synchronous Rectified Buck MOSFET Drivers
September 19, 2012
logo
Richtek Technology Corp...
RT9618 RICHTEK-RT9618 Datasheet
434Kb / 12P
   Synchronous-Rectified Buck MOSFET Drivers
logo
Renesas Technology Corp
HIP6601 RENESAS-HIP6601 Datasheet
241Kb / 8P
   Synchronous-Rectified Buck MOSFET Drivers
August 2004
logo
Richtek Technology Corp...
RT9603 RICHTEK-RT9603 Datasheet
116Kb / 10P
   Synchronous-Rectified Buck MOSFET Drivers
RT9603 RICHTEK-RT9603_07 Datasheet
128Kb / 10P
   Synchronous-Rectified Buck MOSFET Drivers
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


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
Family Site : ic2ic.com  |   icmetro.com