DataSheet.jp

ISL78201 の電気的特性と機能

ISL78201のメーカーはIntersilです、この部品の機能は「40V 2.5A Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL78201
部品説明 40V 2.5A Regulator
メーカ Intersil
ロゴ Intersil ロゴ 




このページの下部にプレビューとISL78201ダウンロード(pdfファイル)リンクがあります。

Total 23 pages

No Preview Available !

ISL78201 Datasheet, ISL78201 PDF,ピン配置, 機能
DATASHEET
40V 2.5A Regulator with Integrated High-side MOSFET
for Synchronous Buck or Boost Buck Converter
ISL78201
The ISL78201 is an AEC-Q100 qualified 40V, 2.5A synchronous
buck or boost buck controller with a high-side MOSFET and
low-side driver integrated. In buck mode, the ISL78201 supports
a wide input range of 3V to 40V. In boost-buck mode, the input
range can be extended down to 2.5V and output regulation can be
maintained when VIN drops below VOUT, enabling sensitive
electronics to remain on during cold-cranking and start-stop
applications.
The ISL78201 has a flexible selection of operation modes
including forced PWM mode and an optional switch to PFM mode
for light loads. In PFM mode, the quiescent input current is as low
as 300µA and can be further reduced to 180µA with AUXVCC
connected to VOUT under 12V VIN and 5V VOUT application. The
load boundary between PFM and PWM can be programmed to
cover wide applications.
The low-side driver can be either used to drive an external low-side
MOSFET for a synchronous buck, or left unused for a standard
non-synchronous buck. The low-side driver can also be used to
drive a boost converter as a pre-regulator that greatly expands the
operating input voltage range down to 2.5V or lower (refer to
“Typical Application Schematic III - Boost Buck Converters” on
page 5).
The ISL78201 offers the most robust current protections. It uses
peak current mode control with cycle-by-cycle current limiting. It is
implemented with frequency foldback undercurrent limit
condition; in addition, the hiccup overcurrent mode is also
implemented to guarantee reliable operations under harsh short
conditions. The ISL78201 has comprehensive protections against
various faults including overvoltage and over-temperature
protections, etc.
Features
• Buck Mode: input voltage range 3V to 40V (refer to “Input
Voltage” on page 15 for more details)
• Boost mode expands operating input voltage lower than 2.5V
(refer to “Input Voltage” on page 15 for more details)
• Selectable forced PWM mode or PFM mode
• 300µA IC quiescent current (PFM, no load); 180µA input
quiescent current (PFM, no load, VOUT tied to AUXVCC)
• Less than 5µA (MAX) shutdown input current (IC disabled)
• Operational topologies
- Synchronous buck
- Non-synchronous buck
- Two stage boost buck
- Non-inverting single inductor buck boost
• Programmable frequency from 200kHz - 2.2MHz and
frequency synchronization capability
±1% Tight voltage regulation accuracy
• Reliable cycle-by-cycle overcurrent protection
- Temperature compensated current sense
- Programmable OC limit
- Frequency foldback and hiccup mode protection
• 20 Ld HTSSOP package
• AEC-Q100 qualified
• Pb-free (RoHS compliant)
Applications
Automotive applications
• General purpose power regulator
• 24V Bus power
• Battery power
• Embedded processor and I/O supplies
PGOOD
EN
MODE
SYNC
AUXVCC
VIN
BOOT
VCC
ILIMIT
SS
ISL78201 PHASE
LGATE
EXT_BOOST
FS
SGND
PGND
FB
COMP
VIN
VOUT
FIGURE 1. TYPICAL APPLICATION
100
95 6V VIN
90
85 12V VIN
80
75 40V VIN
70 24V VIN
65
60
55
50
0.1m
1m
10m
100m
1 2.5
LOAD CURRENT (A)
FIGURE 2. EFFICIENCY, SYNCHRONOUS BUCK, PFM MODE,
VOUT 5V, TA = +25°C
March 31, 2015
FN8615.1
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) 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





ISL78201 pdf, ピン配列
ISL78201
Functional Pin Description (Continued)
PIN NAME
PGOOD
PHASE
EXT_BOOST
SYNC
LGATE
PAD
PIN #
15
16, 17
18
19
20
21
DESCRIPTION
PGOOD is an open drain output and pull-up this pin with a resistor to VCC for proper function. PGOOD will be pulled low under
the events when the output is out of regulation (OV or UV) or EN pin is pulled low. PGOOD rising has a fixed 128 cycles
delay.
These pins are the PHASE nodes that should be connected to the output inductor. These pins are connected to the source of
the high-side N channel MOSFET.
This pin is used to set boost mode and monitor the battery voltage that is the input of the boost converter. After VCC POR, the
controller will detect the voltage on this pin, if voltage on this pin is below 200mV, the controller is set in
synchronous/non-synchronous buck mode and latch in this state unless VCC is below the POR falling threshold; if the voltage
on this pin after VCC POR is above 200mV, the controller is set in boost mode and latch in this state.
In boost mode, this pin is used to monitor input voltage through a resistor divider. By setting the resistor divider, the high
threshold and hysteresis can be programmed. When voltage on this pin is above 0.8V, the PWM output (LGATE) for the boost
converter is disabled, and when voltage on this pin is below 0.8V minus the hysteresis, the boost PWM is enabled.
In boost mode operation, PFM is disabled when boost PWM is enabled. Check Boost Mode Operation in the “Functional
Description” on page 14 for more details.
This pin can be used to synchronize two or more ISL78201 controllers. Multiple ISL78201s can be synchronized with their
SYNC pins connected together. 180 degree phase shift is automatically generated between the master and slave ICs.
The internal oscillator can also lock to an external frequency source applied on this pin with square pulse waveform (with
frequency 10% higher than the IC’s local frequency, and pulse width higher than 150ns).
This pin should be left floating if not used. Range: 0V to 5.5V.
In synchronous buck mode, this pin is used to drive the lower side MOSFET to improve efficiency. A 5.1k or smaller value
resistor has to be added to connect LGATE to ground to avoid falsely turn-on of LGATE caused by coupling noise.
In non-synchronous buck when a diode is used as the bottom side power device, this pin should be connected to VCC through
a resistor (less than 5k) before VCC start-up to have low-side driver (LGATE) disabled.
In boost mode, it can be used to drive the boost power MOSFET. The boost control PWM is the same with the buck control PWM.
Bottom thermal pad. It is not connected to any electrical potential of the IC. In layout it must be connected to PCB ground
copper plane with an area as large as possible to effectively reduce the thermal impedance.
Ordering Information
PART
NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(RoHS Compliant)
PKG.
DWG. #
ISL78201AVEZ
78201 AVEZ
-40 to +105
20 Ld HTSSOP
M20.173A
ISL78201EVAL1Z
Evaluation Board
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL78201. For more information on MSL please see techbrief TB363.
Submit Document Feedback
3
FN8615.1
March 31, 2015


3Pages


ISL78201 電子部品, 半導体
ISL78201
Absolute Maximum Ratings
VIN, PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +44V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.0V
AUXVCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +22V
Absolute Boot Voltage, VBOOT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +50.0V
Upper Driver Supply Voltage, VBOOT - VPHASE. . . . . . . . . . . . . . . . . . . +6.0V
All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V
ESD Rating
Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . 2000V
Machine Model (Tested per JESD22-A115C) . . . . . . . . . . . . . . . . . . 250V
Charged Device Model (Tested per AEC-Q100-011). . . . . . . . . . . . 1000V
Latch-up Rating (Tested per JESD78B; Class II, Level A) . . . . . . . . . 100mA
Thermal Information
Thermal Resistance
JA (°C/W) JC (°C/W)
HTSSOP Package (Notes 4, 5) . . . . . . . . . . . . . . .
35
3.5
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range. . . . . . . . . . . . . . . . . -65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions
Supply Voltage on VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 40V
AUXVCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +20V
Ambient Temperature Range (Automotive). . . . . . . . . . . . . . .-40°C to +105°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . .-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:
4. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Refer to the Block Diagram (page 4) and Typical Application Schematics (page 5). Operating conditions
unless otherwise noted: VIN = 12V, or VCC = 4.5V, TA = -40°C to +105°C. Typicals are at TA = +25°C.
Boldface limits apply across the operating temperature range, -40°C to +105°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 6) TYP (Note 6) UNITS
VIN SUPPLY
VIN Pin Voltage Range
Operating Supply Current
VIN pin
3.05
40 V
VIN connected to VCC
3.05
5.5 V
IQ MODE = VCC/FLOATING (PFM), no load at the output
300
µA
MODE = GND (Forced PWM), VIN = 12V, IC Operating,
not including driving current
1.3
mA
Shutdown Supply Current
INTERNAL MAIN LINEAR REGULATOR
IIN_SD
EN connected to GND, VIN = 12V
2.8 4.5 µA
MAIN LDO VCC Voltage
MAIN LDO Dropout Voltage
VCC Current Limit of MAIN LDO
INTERNAL AUXILIARY LINEAR REGULATOR
VCC VIN > 5V
VDROPOUT_MAIN VIN = 4.2V, IVCC = 35mA
VIN = 3V, IVCC = 25mA
4.2 4.5 4.8
V
0.3 0.52 V
0.25 0.42 V
60 mA
AUXVCC Input Voltage Range
AUX LDO VCC Voltage
LDO Dropout Voltage
Current Limit of AUX LDO
VAUXVCC
VCC VAUXVCC > 5V
VDROPOUT_AUX VAUXVCC = 4.2V, IVCC = 35mA
VAUXVCC = 3V, IVCC = 25mA
3 20 V
4.2 4.5 4.8
V
0.3 0.52 V
0.25 0.42 V
60 mA
AUX LDO Switch-over Rising Threshold
AUX LDO Switch-over Falling Threshold
AUX LDO Switch-over Hysteresis
POWER-ON RESET
VAUXVCC_RISE AUXVCC voltage rise, switch to auxiliary LDO
VAUXVCC_FALL AUXVCC voltage fall, switch back to main BIAS LDO
VAUXVCC_HYS AUXVCC switch-over hysteresis
2.97
2.73
3.1
2.87
0.2
3.2
2.97
V
V
V
Rising VCC POR Threshold
Falling VCC POR Threshold
VPORH_RISE
VPORL_FALL
2.82 2.9 3.05
2.6 2.8
V
V
Submit Document Feedback
6
FN8615.1
March 31, 2015

6 Page



ページ 合計 : 23 ページ
 
PDF
ダウンロード
[ ISL78201 データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
ISL78200

2.5A Regulator

Intersil Corporation
Intersil Corporation
ISL78201

40V 2.5A Regulator

Intersil
Intersil
ISL78205

2.5A Buck Controller

Intersil Corporation
Intersil Corporation
ISL78206

40V 2.5A Buck Controller

Intersil
Intersil


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap