|
|
PDF ISL6226 Data sheet ( Hoja de datos )
| Número de pieza | ISL6226 | |
| Descripción | Advanced PWM and Linear Power Controller for Portable Applications | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL6226 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
®
Data Sheet
August 2002
ISL6226
FN9078.1
Advanced PWM and Linear Power
Controller for Portable Applications
The ISL6226 provides power control and protection for two
user selected output voltages required in high-performance
notebook PC applications. The IC integrates a fixed,
selectable frequency pulse-width-modulation (PWM)
controller and a 3A LDO linear regulator controller with
monitoring and protection circuitry in a single 24 lead SSOP
package.
The PWM controller regulates the battery input voltage to a
user selected output voltage. Synchronous converter and
hysteretic operation at light loads contribute to a high
efficiency over a wide range of input voltage and load
variation. Efficiency can be further enhanced by using the
lower MOSFET’s rDS(ON) as the current sense element. Input
voltage feed-forward ramp modulation, current-mode control,
and internal feed-back compensation provide fast and stable
handling of input voltage load transients encountered in
advanced portable computer chip sets.
The internal linear regulator controller provides a user
selected high current output from an unregulated input with
user selected current limit.
Ordering Information
PART
NUMBER
ISL6226CA
ISL6226EVAL1
TEMP. RANGE
(oC)
PACKAGE
-10 to 85 24 Ld SSOP
Evaluation Board
PKG. NO.
M24.15
Pinout
ISL6226 (SSOP)
TOP VIEW
VIN 1
PGOODL 2
PWMEN 3
OCSET 4
LINEN 5
VCC 6
LINDR 7
LINCS1 8
LINCS2 9
SSLIN 10
LINVS 11
GND 12
24 VOUT
23 VSEN
22 FPWM
21 PGOODP
20 ISEN
19 BOOT
18 UGATE
17 PHASE
16 SSPWM
15 PVCC
14 LGATE
13 PGND
Features
• Provides Two Regulated Voltages
- Linear Regulator, User Selected, Current Limited
- High Efficiency PWM Over Wide Line and Load Range
- Synchronous Buck Converter on PWM Output
- Hysteretic Operation at Light Load
• Dual Mode Operation:
- Directly From Battery Input, VIN, of 5.6V to 24V or from
VCC of 5V
• PWM Output Adjustable From 0.9V to 0.93*VIN
• Low Drop-Out (LDO) Linear Regulator Operates from
Vout+0.5V to 24V
• LDO Output Adjustable
- From 0.8V to 3.8V at 0A to 3A for NPN Transistor
- From 0.8V to 3.0V at 0A to 3A for N-MOSFET
• 300/600kHz Switching Frequency Selectable
• Forced PWM Mode Control Option
• No Current-Sense Resistor Required on PWM Output
- Uses MOSFET’s rDS(ON)
- Optional Current-Sense Resistor for More Precision
• Separate Soft-Start For Both PWM and LDO
• Separate Enable Pins for both PWM and LDO for
Advanced Configuration and Power Interface (ACPI)
Compatibility
• Input Under voltage Lock-Out (UVLO) Protection
• Excellent Dynamic Response
- Input Voltage Feed-Forward and Current-Mode Control
• Monitors Output Voltages and Provides PGOOD Status
• Thermal Shut-Down Protection
Applications
• Mobile PCs
• Hand-Held Portable Instruments
• Other Devices and Appliances With up to 24V Input
Related Literature
• AN1013
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
1 page  
ISL6226
UGATE (Pin18)
This pin provides the gate drive for the upper MOSFET.
Connect UGATE pin to the PWM converter’s upper
MOSFET gate.
BOOT (Pin 19)
Power is supplied to the upper MOSFET driver of the PWM
converter via the BOOT pin. Connect this pin to the junction
the bootstrap capacitor with the cathode of the bootstrap
diode. The anode of the bootstrap diode is connected to pin
6, VCC.
ISEN (Pin 20)
This pin is used to monitor the voltage drop across the lower
MOSFET for current feedback control. For more precise
current detection, this input can be connected to optional
current sense resistors placed in series with the source of
the lower MOSFET.
PGOODP (Pin 21)
PGOODP is an open drain output used to indicate the status
of the PWM converter’s output voltages. This pin is pulled
low when the output is not within of their respective nominal
voltage.
FPWM (Pin 22)
This pin when pulled to VCC restrains hysterectic operation
in light loads.
VSEN (Pin 23)
This pin is connected to the PWM voltage divider to provide
the voltage feedback signal for the PWM controller. The
PGOODP, overvoltage protection (OVP) and undervoltage
shutdown circuits use this signal to determine output voltage
status and/or to initiate undervoltage shut down.
VOUT (Pin 24)
The output voltage is sensed on this pin to provide feedback
during the PWM to Hysteretic mode transition.
5
5 Page 
ISL6226
5V
C2
2 x10µF
LINEAR INPUT
Vout = 0.8V - 3.8V
3A R2
+ C5
330µF
R3
Q1
R1
LINDR
LINCS1
LINCS2
LINVS
VIN
1
VCC
6
7 19
8
18
17
9
20
ISL6226
11 14
13
BOOT
UGATE
PHASE
ISEN R4
200 1K
LGATE
PGND
D1
BAT54WT1
Q2
1/2 FDS6982S
C5
0.15µF
L2
6.4µH
Q3
1/2 FDS6982S
R5
Vout = 0.9V - 0.93*VIN
(2A)
+ C6
1x330µF
LINEN
PWMEN
FPWM
5
3
22
24 VOUT
23 VSEN
C8
R7
PVCC 15
PGOODL 2
PGOODP
21
SSLIN
10
C10
4 OCSET
16
12
GND
SSPWM
C11
R8
FIGURE 6. APPLICATION CIRCUIT FOR TWO STEP 600 kHz CONVERSION (MODE 3)
NOTE: Q1 can be either N-MOSFET, NPN or not used for 50
mA
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ISL6226.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL6223 | Mobile Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller | Intersil Corporation |
| ISL6224 | Single Output Mobile-Friendly PWM Controller | Intersil Corporation |
| ISL6225 | Dual Mobile-Friendly PWM Controller with DDR Memory Option | Intersil Corporation |
| ISL6226 | Advanced PWM and Linear Power Controller for Portable Applications | Intersil Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |