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ISL8270M 데이터시트 PDF




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부품번호 ISL8270M 기능
기능 Digital DC/DC PMBus 25A Module
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ISL8270M 데이터시트, 핀배열, 회로
DATASHEET
Digital DC/DC PMBus 25A Module
ISL8270M
The ISL8270M is a 25A step-down DC/DC power supply module
with integrated digital PWM controller, synchronous power
switches, an inductor and passives. Only bulk input and output
capacitors are needed to finish the design. The 25A of
continuous output current can be delivered without a need of
airflow or a heatsink. The thermally enhanced HDA module is
capable of dissipating heat directly into the PCB.
The ISL8270M uses ChargeMode™ control architecture, which
responds to a transient load within a single switching cycle.
The ISL8270M comes with a preprogrammed configuration for
operating in a pin strap mode; output voltage, switching
frequency and device SMBus address can be programmed
with external resistors. More configuration such as soft-start
and fault limits can be easily programmed or changed via
PMBus compliant serial bus interface. PMBus can be used to
monitor voltages, current, temperatures and fault status. The
ISL8270M is supported by PowerNavigator™ software, a
graphical user interface (GUI) that can be used to configure
modules to a desired solution.
The ISL8270M is available in a 40-pin compact 17mmx19mm
HDA module with very low profile height of3.55mm, suitable
for automated assembly by standard surface mount
equipment. The ISL8270M is RoHS compliant by exemption.
Features
• Complete digital switch mode power supply
- Wide VIN range: 4.5V to 14V
- Programmable VOUT range: 0.6V to 5V
• PMBus compliant I2C communication interface
- Programmable VOUT, margining, UV/OV, IOUT limit,
soft-start/stop, sequencing, and external synchronization
- Monitor: VIN, VOUT, IOUT, temperature, duty cycle,
switching frequency and faults
• ChargeMode control architecture
• ±1.0% VOUT accuracy over line, load and temperature
• Power-Good indicator
• Over-temperature protection
• Internal nonvolatile memory and fault logging
• Patented thermally enhanced HDA package
Applications
• Server, telecom, storage, and datacom
• Industrial/ATE, and networking equipment
• General purpose power for ASIC, FPGA, DSP and memory
Related Literature
AN1926 “ISL8270MEVAL1Z Evaluation Board User Guide”
VIN
2.2
1
CIN
10
VIN
VDD
VOUT
VSEN+
VSEN-
VDRVIN
VDRVOUT
ISL8270M
SCL
SDA
SALRT
VOUT
COUT
19mm
3.55mm
17mm
SGND
PGND
NOTE:
1. Only bulk input and output capacitors are required to finish the
design.
FIGURE 1. A COMPLETE DIGITAL SWITCH MODE POWER SUPPLY
FIGURE 2. A SMALL PACKAGE FOR HIGH POWER DENSITY
July 2, 2015
FN8635.1
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 LLC 2014, 2015. All Rights Reserved
Intersil (and design), PowerNavigator, ChargeMode and Digital-DC are trademarks owned by Intersil Corporation
or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.




ISL8270M pdf, 반도체, 판매, 대치품
Pin Configuration
ISL8270M
ISL8270M
(40 LD HDA)
TOP VIEW
DDC 1
XTEMP+ 2
XTEMP - 3
NC 4
NC 5
VSEN+ 6
VSEN - 7
VDRVOUT 8
PGND 9
VDRVIN 10
VIN 11
27 26 25 24 23 22 21 20 19 18 17
28 PG
SYNC 39
29 UVLO
38
40
SGND
37
36
16
15
SGND
30
PHASE
34
PGND
31
PGND
33
NC
32
NC
35
VOUT 14
PGND 12
VSWH
13
Pin Descriptions
PIN LABEL
1 DDC
2 XTEMP+
3 XTEMP-
6 VSEN+
7 VSEN-
8 VDRVOUT
9, 12, 23,
31, 34
10
PGND
VDRVIN
11 VIN
TYPE
I/O
I
I
I
I
PWR
PWR
PWR
PWR
DESCRIPTION
A Digital-DCbus. This dedicated bus provides the communication channel between devices for features such as
sequencing and fault spreading. The DDC pin on all Digital-DC devices should be connected together. A pull-up
resistor is required for this application.
Differential external temperature sensor positive input pin.
Differential external temperature sensor negative input pin.
Differential Output voltage sense feedback. Connect to positive output regulation point.
Differential Output voltage sense feedback. Connect to negative output regulation point.
Output of internal LDO for powering internal gate driver block. Place a 10µF ceramic capacitor at this pin. LDO
output is dedicated to powering internal gate driver stage only. Do not use this LDO for any other purpose.
Power ground. Refer to the “PCB Layout Guidelines” on page 20 for the PGND pad connections and decoupling
capacitors placement.
Input supply to internal LDO for powering internal gate driver block. An RC filter is required if VIN supply is shared.
Refer to the “PCB Layout Guidelines” on page 20.
Main input supply. Refer to the “PCB Layout Guidelines” on page 20 for the decoupling capacitors placement from
VIN to PGND.
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ISL8270M 전자부품, 판매, 대치품
ISL8270M
Absolute Maximum Ratings
Input Supply Voltage, VIN Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 17V
Input Supply Voltage for Controller, VDD Pin . . . . . . . . . . . . . . -0.3V to 17V
Input Gate Driver Supply Voltage, VDRVIN Pin . . . . . . . . . . . . . -0.3V to 17V
Output Gate Driver Supply Voltage, VDRVOUT Pin . . . . . . . . . . . -0.3V to 6V
6V Internal Reference Supply Voltage, VR6 Pin . . . . . . . . . . . -0.3V to 6.6V
5V Internal Reference Supply Voltage, VR5 Pin . . . . . . . . . . . -0.3V to 6.5V
2.5V Internal Reference Supply Voltage, V25 Pin. . . . . . . . . . . . -0.3V to 3V
Logic I/O Voltage for DDC, EN, MGN, PG,DISB#
SA, SCL,SDA, SALRT, SYNC, UVLO, VMON, VSET . . . . . . . . . -0.3V to 6.0V
Analog Input Voltages for
VSEN+, XTEMP+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.0V
VSEN-, XTEMP- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V
ESD Rating
Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . 2000V
Machine Model (Tested per JESD22-A115C) . . . . . . . . . . . . . . . . . . 200V
Charged Device Model (Tested per JESD22-C110D) . . . . . . . . . . . . 750V
Latch-up (Tested per JESD78C; Class 2, Level A) . . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
40 LD HDA Package (Notes 5, 6) . . . . . . . .
7.5
2.2
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . .+125°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-55°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . Refer to Figure 30
Recommended Operating Conditions
Input Supply Voltage Range, VIN . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 14V
Input Supply Voltage Range for Controller, VDD . . . . . . . . . . . 4.5V to 14V
Output Voltage Range, VOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.6V to 5V
Output Current Range, IOUT(DC) (Note 9) . . . . . . . . . . . . . . . . . . . . 0A to 25A
Operating Junction Temperature Range, TJ. . . . . . . . . . . .-40°C to +125°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
5. JA is measured in free air with the module mounted on an evaluation board 3x4.5inch in size with 2oz surface and 2oz buried planes and multiple
via interconnects as specified on AN1926, “ISL8270MEVAL1Z Evaluation Board User Guide”.
6. For JC, the “case temp” location is the center of the package underside.
Electrical Specifications VIN = VDD= 12V, fSW = 533kHz, COUT = 1340µF, TA = -40°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C. Boldface limits apply across the operating temperature range, -40°C to +85°C.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNITS
INPUT AND SUPPLY CHARACTERISTICS
IDD
Input Supply Current for Controller
VIN = VDD = 12V, VOUT = 0V, Module not
Enabled
40 50 mA
VR6
VR5
V25
VDD_READ_RES
6V Internal Reference Supply Voltage
5V Internal Reference Supply Voltage IVR5 < 5mA
2.5V Internal Reference Supply Voltage
Input Supply Voltage for Controller
Read Back Resolution
5.5 6.1 6.6 V
4.5 5.2 5.5 V
2.25 2.5 2.75 V
10 Bits
VDD_READ_ERR
Input Supply Voltage for Controller
Read Back Total Error (Note 10)
PMBus Read
±2 %FS
OUTPUT CHARACTERISTICS
VOUT_RANGE
VOUT_RES
VOUT_ACCY
VOUT_READ_RES
VOUT_READ_ERR
Output Voltage Adjustment Range
Output Voltage Set-Point Range
VIN > VOUT + 1.8V
Configured using PMbus
Output Voltage Set-Point Accuracy
(Notes 8, 10)
Output Voltage Read Back Resolution
Includes Line, Load and Temperature
(-20°C TA +85°C)
Output Voltage Read Back Total Error PMBus Read
(Note 10)
0.54
-1
-2
±0.025
10
5.5 V
%
+1 %VOUT
Bits
+2 %VOUT
IOUT_READ_RES
IOUT_RANGE
IOUT_READ_ERR
Output Current Read Back Resolution
Output Current Range (Note 9)
Output Current Read back Total Error PMBus Read at Max Load
10 Bits
25 A
±2 A
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ISL8270M

Digital DC/DC PMBus 25A Module

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