Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

AN8014S Datasheet(PDF) 10 Page - Panasonic Semiconductor

Part # AN8014S
Description  Step-down, step-up, or inverting DC-DC converter control IC
Download  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  PANASONIC [Panasonic Semiconductor]
Direct Link  http://www.panasonic.com/industrial/
Logo PANASONIC - Panasonic Semiconductor

AN8014S Datasheet(HTML) 10 Page - Panasonic Semiconductor

Back Button AN8014S Datasheet HTML 6Page - Panasonic Semiconductor AN8014S Datasheet HTML 7Page - Panasonic Semiconductor AN8014S Datasheet HTML 8Page - Panasonic Semiconductor AN8014S Datasheet HTML 9Page - Panasonic Semiconductor AN8014S Datasheet HTML 10Page - Panasonic Semiconductor AN8014S Datasheet HTML 11Page - Panasonic Semiconductor AN8014S Datasheet HTML 12Page - Panasonic Semiconductor AN8014S Datasheet HTML 13Page - Panasonic Semiconductor AN8014S Datasheet HTML 14Page - Panasonic Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 18 page
background image
AN8014S
Voltage regulators
10
s Application Notes (continued)
[1] Function descriptions (continued)
6. Remote circuit
It is possible to switch on or off the IC control by using an external control signal. When the OFF pin (pin 16)
voltage is lowered to below approximately 0.8 V, the internal reference voltage goes down thereby stopping the
IC control and reducing the circuit current to 5
µA or less. When the OFF pin voltage is increased to approximately
2.0 V or more, the internal reference voltage rises thereby starting the control operation.
7. PWM comparator block
The PWM comparator controls the on-period of output pulse in accordance with the input voltage. While the
triangular wave voltage on the CT pin (pin 3) is lower than both the error amplifier's output voltage on pin 8 and
the voltage on the DTC pin (pin 4), the output on the Out pin (pin 13) will be set to high level. Then the switching
element (n-channel MOSFET) will be turned on.
The dead-time is set by adjusting the voltage VDTC on the DTC pin (pin 5) as shown in figure 4.
The DTC pin has constant current output determined by the resistor RT . Therefore VDTC is adjusted by
connecting the DTC and GND pins through the external resistor RDTC .
When the oscillator frequency fOSC is 200 kHz, the output duty cycle will be 0% at VDTC of 0.44 V typical and
100% at VDTC of 1.32 V typical.
The levels of overshooting and undershooting of the peak value VCTH and the trough value VCTL of the
triangular wave vary with the oscillator frequency.
DTC
CT waveform
DTC
waveform
Out waveform
Figure 4. Setting the dead-time
Off
Off
On
tOFF
tON
VCTH
VDTC
VCTL
IDTC
PWM
VREF
RDTC
CDTC
CT
FB
Output duty ratio Du and DTC pin voltage VDTC are expressed by the following formulas;
Du
=
tON
× 100 [%] =
VDTC − VCTL × 1.1 × 100 [%]
tON − tOFF
(VCTH − VCTL) × 1.1
IDTC =
VRT × 1 [A]
RT
2
VDTC = IDTC × RDTC = VRT ×
RDTC × 1 [V]
RT
2
Example) When fOSC = 215 [kHz] (RT = 15 kΩ, CT = 120 pF) and RDTC = 75 [kΩ]
VCTH is approximately 1.32 V, VCTH is approximately 0.44 V, and VRT is approximately 0.4 V.
Therefore, the following are obtained.
IDTC ≈ 13.3 [µA]
VDTC ≈ 0.99 [V]
Du
≈ 52.3 [%]
There may be an operational delay of the PWM comparator and a difference in peak and trough values of the
triangular wave oscillation. Discrepancies between the values obtained from the above formulas and the actual
values may occur, in which case adjust the values on the mounting substrate.
In starting, if the capacitor CDTC is added in parallel to the external resistor RDTC , and the output pulse width
are gradually widened, the AN8014S will be in soft-start operation. Thus the overshoot at the output of DC-DC
converters can be prevented.


Similar Part No. - AN8014S

ManufacturerPart #DatasheetDescription
logo
Panasonic Semiconductor
AN8010 PANASONIC-AN8010 Datasheet
159Kb / 9P
   3-pin, positive output, low dropout voltage regulator (50 mA type)
AN8010M PANASONIC-AN8010M Datasheet
159Kb / 9P
   3-pin, positive output, low dropout voltage regulator (50 mA type)
AN8011S PANASONIC-AN8011S Datasheet
161Kb / 16P
   2-channel step-down, step-up, or inverting use DC-DC converter control IC
AN8013SH PANASONIC-AN8013SH Datasheet
125Kb / 15P
   Single-channel step-up or step-down DC-DC converter control IC
AN8015SH PANASONIC-AN8015SH Datasheet
131Kb / 14P
   Single-channel step-down, step-up, or inverting use DC-DC converter control IC
More results

Similar Description - AN8014S

ManufacturerPart #DatasheetDescription
logo
Panasonic Semiconductor
AN8015SH PANASONIC-AN8015SH Datasheet
131Kb / 14P
   Single-channel step-down, step-up, or inverting use DC-DC converter control IC
AN8011S PANASONIC-AN8011S Datasheet
161Kb / 16P
   2-channel step-down, step-up, or inverting use DC-DC converter control IC
AN8018SA PANASONIC-AN8018SA Datasheet
268Kb / 26P
   1.8-volt 2-channel step-up, step-down, or inverting DC-DC converter control IC
AN8013SH PANASONIC-AN8013SH Datasheet
125Kb / 15P
   Single-channel step-up or step-down DC-DC converter control IC
logo
HTC Korea TAEJIN Techno...
MC34063C HTC-MC34063C_11 Datasheet
436Kb / 10P
   Step Down / Step Up / Inverting DC-DC Converter
MC34063C HTC-MC34063C_08 Datasheet
306Kb / 9P
   0.8A Step Down / Step Up / Inverting DC-DC Converter
logo
BCD Semiconductor Manuf...
AZ34063A BCDSEMI-AZ34063A Datasheet
215Kb / 13P
   1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
AZ34063C BCDSEMI-AZ34063C Datasheet
298Kb / 13P
   0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
AZ34063D BCDSEMI-AZ34063D Datasheet
812Kb / 14P
   1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
AZ34063U BCDSEMI-AZ34063U Datasheet
780Kb / 14P
   1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18


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