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ISL95210 の電気的特性と機能

ISL95210のメーカーはIntersilです、この部品の機能は「10A Buck Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL95210
部品説明 10A Buck Regulator
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL95210 Datasheet, ISL95210 PDF,ピン配置, 機能
High Efficiency 5V, 10A Buck Regulator
ISL95210
The ISL95210 is a high-efficiency step-down regulator that can
deliver 10A of output current from a 5V input. The small
4mmx6mm QFN package and only four external components
provide a very small total solution size. Low resistance internal
MOSFETs deliver excellent efficiency and permit full power
operation in a +90°C ambient without airflow.
The regulator operates from an input voltage of 2.97V to 5.5V,
and provides a 0.6% accurate output voltage over the full
operating temperature range. Intersil's patented R4™ control
architecture provides exceptional transient response with no
external compensation components. The output voltage may be
programmed by an internal DAC or by an external resistor divider
(see “Output Voltage Programming” on page 11 for more
details).
Several digital control signals provide flexibility for users that
want additional features. Switching frequency, switching mode,
output voltage margining and daisy-chained power-good
functions are all programmed by these pins. The ISL95210 also
includes comprehensive internal protection for overvoltage,
undervoltage, overcurrent and over-temperature conditions.
Related Literature
• See AN1485, “ISL95210 10A Integrated FET Regulator
Evaluation Board Setup Procedure”
Features
• 10A Continuous Output Current
• 2.97V to 5.5V Input Voltage Range
• Up to 95% Efficiency
• Full Power Operation in +90°C Ambient without Airflow
• R4™ Control Architecture Delivers Excellent Transient
Response Without Compensation
• Pin Selectable Output Voltage Programming
• ±0.6% Output Voltage Accuracy Over Full Operating
Temperature Range
• Programmable Enhanced Light-Load Efficiency Operation
• Output Voltage Margining and Power-good Monitor
• Small 6mmx4mm QFN Package
Applications
• Point-of-Load Power Supplies
• Notebook Computer Power
• General Purpose Power Rail Generation
VIN = 5V
CIN
10µF
VCC
CONTROL
SIGNALS
VIN
PVCC
PGOOD
ISL95210
PHASE
EN
PG_IN
FSET
VSEL1
MPCT
MSEL
VSEL0
FCCM
VOUT
VCC
AGND
PGND
T-PAD
POWER GOOD
LOUT
420nH
VOUT = 1.2V
+
COUT
220µF
1µF
FSW= 800kHz
LOUT = MPC0740LR42C (NEC/TOKIN)
COUT = 2TPLF220M5 (SANYO)
FIGURE 1. 10A DC/DC CONVERTER USING ONLY 4 EXTERNAL
COMPONENTS
100
95
90
85
80
75
70
65
60
VIN = 5V
55 VOUT = 1.2V
FSW = 800kHz
50
0 1 2 3 4 5 6 7 8 9 10
IOUT (A)
FIGURE 2. EFFICIENCY OF CIRCUIT SHOWN IN FIGURE 1
(INCLUDES INDUCTOR LOSSES)
December 15, 2011
FN6938.4
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL95210 pdf, ピン配列
Pin Configuration
ISL95210
ISL95210
(32 LD QFN)
TOP VIEW
26 25 24 23 22 21 20 19 18 17
VSEL0 27
16 VIN
AGND 28
15 PVCC
VOUT 29
VCC 30
T-PAD (PGND)
14 PVCC
13 PGND
MPCT 31
12 PGND
MSEL 32
11 DNC
1 2 3 4 5 6 7 8 9 10
Functional Pin Descriptions
PIN
T-PAD
(Thermal Pad)
1
2
3
4, 5, 6,
7, 8, 9, 10
11
12, 13, 19,
20, 21, 22, 23
14, 15
16, 17, 18
24
25
26
27
NAME
PGND
FCCM
FSET
EN
PHASE
DNC
PGND
PVCC
VIN
PG_IN
PGOOD
VSEL1
VSEL0
FUNCTION
Power ground. This thermal pad provides a return path for power stage and switching currents, as well as a thermal path
for removing heat from the IC into the board. Place thermal vias in the pad to the PGND plane.
Logic input for operating mode selection. Connect this pin to VCC for CCM regulation only. Connect this pin to AGND to allow
discontinuous conduction mode for light-load efficiency. Float this pin for audio mode light-load switching.
Tri-state digital input for programming the regulator switching frequency. Pull this pin to VCC for 800kHz switching. Pull this
pin to GND for 400kHz switching. Leave this pin floating for 533kHz switching.
Logic input for enabling and disabling output voltage regulation. Pull this pin to VCC to begin regulation. Pull this pin to AGND
to disable regulation.
Power stage switching node for output voltage regulation. Connect to the output inductor. All PHASE pins must be electrically
connected together on the printed circuit board.
Do not connect. This pin must be left floating under all conditions.
Power ground. This pin provides a return path for power stage and switching currents. All PGND pins must be electrically
connected together on the printed circuit board.
Power input for the integrated MOSFET gate drivers. Connect to a 5V (±10%) supply. Both PVCC pins must be shorted on
the printed circuit board. VIN and PVCC may be tied together (see Figure 1) when operating from a nominal 5V supply.
However, PVCC requires a 5V (±10%) supply irrespective of VIN. It is connected to VCC through an integrated 10Ω resistor
and therefore doubles as the power supply for IC bias. If VIN is below 4.5V, PVCC must receive a separate power supply
input and decoupling capacitor (1µF typical).
Power input for buck regulation stage. Bypass to PGND with one 10µF or 22µF ceramic capacitor. Connect to a 2.97V to
5.5V supply. All VIN pins must be electrically connected together on the printed circuit board.
Input voltage for the power-good CMOS output. Connect this pin to the desired PGOOD output high level.
Active CMOS output for power-good indication. High state is indicated when the output voltage is in regulation, and output
is logic low otherwise. Logic high level is set by the voltage on the PG_IN pin.
DAC logic MSB input. Used to program preset output voltages of 0.60V, 0.75V, 0.90V, 1.00V, 1.05V, 1.10V, 1.20V, 1.50V,
and 1.80V.
DAC logic LSB input. Used to program preset output voltages of 0.60V, 0.75V, 0.90V, 1.00V, 1.05V, 1.10V, 1.20V, 1.50V,
and 1.80V.
3 FN6938.4
December 15, 2011


3Pages


ISL95210 電子部品, 半導体
ISL95210
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Specified. Boldface limits apply over the operating
temperature range (-10°C to +100°C for ISL95210HRZ; -40°C to +100°C for ISL95210IRZ). (Continued)
PARAMETER
TEST CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNITS
REFERENCE AND DAC
System Accuracy ISL95210HRZ
-10°C to +100°C
VOUT = {0.700V to 2.1625V}, VIN = 5V
VOUT = {0.48125V to 0.700V}, VIN = 5V
-0.60
-0.75
0.60
0.75
%
%
System Accuracy ISL95210IRZ
-40°C to +100°C
VOUT = {0.700V to 2.1625V}, VIN = 5V
VOUT = {0.48125V to 0.700V}, VIN = 5V
-0.75
-1
0.75
1
%
%
Line Regulation Accuracy
4.5V < VIN < 5.5V
0.05
%
Load Regulation Accuracy
FCCM = high, Inductor DCR = 2mΩ
0.08
%
SOFT-START RAMP
Soft-Start and VSEL Slew Rate
1.6 2.3 3.0 mV/µs
PROTECTION
Overcurrent Trip Level
Valley Current Limit (8 PWM Pulse Count)
10 12.5 14
A
Peak Way-Overcurrent (~1µs delay)
28 35 43
A
Undervoltage Threshold
VOUT:VDAC
81 84 87
%
Overvoltage Rising Threshold
VOUT:VDAC
112 116 120
%
Overvoltage Falling Threshold
VOUT:VDAC
99 102 106
%
Power-Good Pull-Up Resistance
1.8 2.3 2.8
kΩ
Power-Good Pull-Down Resistance
30 50 70
Ω
VOUT Soft-Discharge Resistance
All Shutdown Conditions
25 45 65
Ω
POWER MOSFET ON-RESISTANCE
High-Side PMOS
+25°C only
16.52 mΩ
High-Side PMOS
14.8 19.5 mΩ
Low-Side NMOS
+25°C only
4.28 mΩ
Low-Side NMOS
3.8 5.7 mΩ
OVER-TEMPERATURE SHUTDOWN (Note 6)
Thermal Shutdown Setpoint
150 °C
Thermal Recovery Setpoint
125 °C
NOTES:
6. Thermal impedance measured in still air on the ISL95210EVAL1Z REV B evaluation board with 800kHz setup. See AN1485.
7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
6 FN6938.4
December 15, 2011

6 Page



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部品番号部品説明メーカ
ISL95210

10A Buck Regulator

Intersil
Intersil


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