High-Side MOSFET Driver Drivers DC-DC Applications MAX15054 high-

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

High-Side MOSFET Driver Drivers DC-DC Applications MAX15054 high-

Datasheet Thumbnail

Top Searches for this datasheet

19-4747; 9/09
High-Side MOSFET Driver Drivers DC-DC Applications
MAX15054 high-side, n-channel MOSFET driver high-voltage applications capable switching high frequencies. This device controlled CMOS logiclevel signal referenced ground features very short (12ns, typ) propagation delay from input output. high-voltage operation high source/sink-current capability make MAX15054 ideal drivers DC-DC converters. MAX15054 well suited complement other Maxim driver products such MAX16814, MAX16838, MAX16833, MAX16834, MAX16826. MAX15054 adds high-side driver those products that include only low-side driver; then allows buck-boost configurations multistring drivers similar MAX16814, MAX16838, MAX16826, buck-boost conversion with output referenced ground single-string drivers such MAX16834 MAX16833. MAX15054 available industry-standard 6-pin SOT23 package operates over -40NC +125NC automotive temperature range.
Features
Input Voltage High-Side n-Channel MOSFET 13.5V Logic Input Independent Supply
MAX15054
Voltage
Peak Source Sink Current 12ns Propagation Delay Rise Fall Times while Driving 1000pF
Capacitance
Input Capacitance Low-Side High-Side Undervoltage Protection Allows Buck-Boost Topology Referred Ground
Drivers DC-DC Converters
Allows Buck-Boost Topology Multistring
Drivers
6-Pin SOT23 Package
Ordering Information
PART TEMP RANGE PINPACKAGE SOT23 MARK ACOM
Applications
Drivers Single Multiple Strings Backlight Drivers High-Side Driver DC-DC Converters (Buck, Buck-Boost, Half-Bridge, Full-Bridge)
MAX15054AUT+ -40NC +125NC
+Denotes lead(Pb)-free/RoHS-compliant package.
Configuration appears data sheet.
Typical Operating Circuits
CBST
MAX15054
HDRV
GATE NDRV DRAIN
VDRV
OUT1 OUT2
MAX16838
ISET
COMP SGND PGND LEDGND
Typical Operating Circuits continued data sheet. Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim Direct 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
High-Side MOSFET Driver Drivers DC-DC Applications MAX15054
ABSOLUTE MAXIMUM RATINGS
-0.3V Thermal Resistance (Note +65V Junction-to-Ambient Thermal Resistance (BJA) .115NC/W HDRV LX.-0.3V (VDD 0.3V) Junction-to-Case Thermal Resistance (BJC) .80NC/W -0.3V Operating Temperature Range -40NC +125NC -0.3V +15V Maximum Junction Temperature .+150NC dV/dt 50V/ns Storage Temperature Range -65NC +150NC Peak Current into HDRV 100ns) Lead Temperature (soldering, 10s).+300NC Continuous Current into HDRV Q100mA Continuous Power Dissipation +70NC) 6-Pin SOT23 (derate 8.7mW/NC above +70NC) .695.7mW Note Package thermal resistances were obtained using method described JEDEC specification JESD51-7, using fourlayer board. detailed information package thermal considerations, refer
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD VBST VGND -40°C +125°C, unless otherwise noted. Typical values +25°C, unless otherwise noted.) (Note PARAMETER Operating Supply Voltage Quiescent Supply Current Quiescent Supply Current Operating Supply Current Undervoltage Lockout Threshold Undervoltage Lockout Threshold Hysteresis BST-to-LX Undervoltage Lockout Threshold BST-to-LX Undervoltage Lockout Threshold Hysteresis LOGIC INPUT (HI) Logic-High Threshold Logic-Low Threshold Logic-Input Hysteresis Input Current Input Resistance DRIVER Withstand Voltage Withstand Voltage Pulldown Current Driver Output Resistance (Sourcing) Driver Output Resistance (Sinking) RON_HP RON_HN VLX_MAX VBST_MAX 2.5V VBST 4.5V, 100mA sourcing VBST 4.5V, 100mA sinking +25NC +125NC +25NC +125NC 1.25 0.75 1100 VBST_
UVLO
SYMBOL IBST IBSTO VDD_UVLO switching switching
CONDITIONS
4.56
UNITS
500kHz, load rising 3.92
4.22
rising
3.54
3.82
High-Side MOSFET Driver Drivers DC-DC Applications
ELECTRICAL CHARACTERISTICS (continued)
(VDD VBST VGND -40°C +125°C, unless otherwise noted. Typical values +25°C, unless otherwise noted.) (Note PARAMETER Peak Output Current (Sourcing) Peak Output Current (Sinking) SWITCHING CHARACTERISTICS No-load capacitor Rise Time 1000pF 5000pF No-load capacitor Fall Time Turn-On Propagation Delay Turn-Off Propagation Delay tD_ON tD_OFF 1000pF 5000pF Figure 1000pF (Note Figure 1000pF (Note SYMBOL IPK_HP IPK_HN VHDRV VHDRV CONDITIONS UNITS
MAX15054
Note devices 100% production tested +25NC. Limits over operating temperature range guaranteed design. Note Guaranteed design.
tD_ON tD_OFF
VHDRV
Figure Turn-On/Turn-Off Propagation Delay
High-Side MOSFET Driver Drivers DC-DC Applications MAX15054
Typical Operating Characteristics
(VDD VBST VGND +25°C, unless otherwise noted.)
UNDERVOLTAGE LOCKOUT THRESHOLD TEMPERATURE
MAX15054 toc01
BST-LX UNDERVOLTAGE LOCKOUT THRESHOLD TEMPERATURE
MAX15054 toc02
POWER-UP POWER-DOWN SEQUENCE
MAX15054 toc03
4.250 4.225 4.200 UVLO THRESHOLD 4.175 4.150 4.125 4.100 4.075 4.050 4.025 4.000 3.975 FALLING RISING
3.875 3.850 3.825 UVLO THRESHOLD 3.800 3.775 3.750 3.725 3.700 3.675 3.650 3.625 3.600 BST-LX FALLING BST-LX RISING
5kHz
1V/div HDRV 1V/div
TEMPERATURE (NC)
TEMPERATURE (°C)
400µs/div
POWER-UP POWER-DOWN SEQUENCE
MAX15054 toc04
VDD, BST-LX QUIESCENT SUPPLY CURRENT SUPPLY VOLTAGE
MAX15054 toc05
5kHz
1V/div HDRV 1V/div
QUIESCENT CURRENT (µA)
IBST +125NC +85NC +25NC
40µs/div
-40NC SUPPLY VOLTAGE
OPERATING SUPPLY CURRENT SWITCHING FREQUENCY
1750 1500 IBSTO (µA) 1250 1000 1000 SWITCHING FREQUENCY (kHz) 10,000 LOAD HDRV
MAX15054 toc06
INPUT THRESHOLDS TEMPERATURE
3.75 INPUT THRESHOLD 3.50 3.25 3.00 2.75 2.50 2.25 2.00 TEMPERATURE (NC) FALLING RISING
MAX15054 toc07
2000
4.00
High-Side MOSFET Driver Drivers DC-DC Applications
Typical Operating Characteristics (continued)
(VDD VBST VGND +25°C, unless otherwise noted.)
HDRV OUTPUT HIGH/LOW TEMPERATURE
2V/div
MAX15054
2MHz OPERATION
MAX15054 toc08
OUTPUT HIGH/LOW
VBST VHDRV SOURCING 100mA
HDRV 2V/div
VHDRV SINKING 100mA
LOAD HDRV
200ns/div
OUTPUT HIGH VBST VHDRV OUTPUT VHDRV TEMPERATURE (NC)
DUTY CYCLE 2MHz
MAX15054 toc10
DUTY CYCLE 2MHz
MAX15054 toc11
TURN-ON/TURN-OFF PROPAGATION DELAY TEMPERATURE
2V/div PROPAGATION DELAY (ns) 12.5 12.0 11.5 11.0 10.5 10.0
MAX15054 toc12
13.0
2V/div
MAX15054 toc09
tD_OFF
HDRV 2V/div 10ns/div
10ns/div
2V/div
tD_ON
TEMPERATURE (°C)
RISE TIME FALL TIME
MAX15054 toc13
TURN-ON TURN-OFF PROPAGATION DELAY
MAX15054 toc14
2V/div
HDRV
HDRV
1V/div
2V/div
4.7nF CAPACITOR CONNECTED FROM HDRV GND,
20ns/div
HDRV
CAPACITOR CONNECTED FROM HDRV GND,
40ns/div
High-Side MOSFET Driver Drivers DC-DC Applications MAX15054
Description
NAME HDRV FUNCTION CMOS Logic Input. referenced capable withstanding voltages 13.5V voltage. Ground Input Supply Voltage. Valid supply voltage ranges from 4.6V 5.5V. Bypass with 0.1FF ceramic capacitor close possible device. Boost Flying Capacitor Connection. Connect minimum 0.1FF ceramic capacitor between high-side MOSFET driver supply. Connect bootstrap Schottky diode between BST. High-Side Gate-Driver Output. Driver output drive high-side external MOSFET gate. Source Connection High-Side MOSFET. also serves return terminal high-side driver.
Functional Diagram
EXTERNAL
HIGH-SIDE UVLO
HDRV
MAX15054
LOW-SIDE UVLO LEVEL SHIFT LEVEL SHIFT DOWN
Detailed Description
MAX15054 n-channel MOSFET driver controls external high-side MOSFET high-voltage, high-current applications. This driver operates with supply voltage 4.6V 5.5V, consumes only 300FA supply current during typical switching operations (fSW 500kHz) no-load conditions. MAX15054 provides 2.5A (typ) sink/source peak current capable operating with large capacitive loads with switching frequencies 2MHz. device used drive high-side MOSFET without requiring isolation device such optocoupler drive transformer.
high-side driver controlled CMOS logic referenced ground powered bootstrap circuit formed external diode capacitor. Undervoltage lockout (UVLO) protection provided both high- low-side driver supplies (BST VDD) includes UVLO hysteresis 0.2V (typ). MAX15054's fast switching times very short propagation delays (11ns, typ) ideal highfrequency applications. Internal logic circuitry prevents shoot-through during output state changes minimizes package power dissipation.
High-Side MOSFET Driver Drivers DC-DC Applications
MAX15054 drives external high-side MOSFET. Both high- low-side supplies feature separate UVLO protection that monitors each driver's input supply voltage (BST-LX VDD). low-side supply UVLO threshold (VDD_UVLO) referenced pulls driver output when falls below (typ) irrespective high-side UVLO condition. high-side driver UVLO threshold (VBST_UVLO) referenced pulls HDRV when VBST falls below 3.6V (typ) with respect After MAX15054 first energized (VDD VDD_UVLO), bootstrap capacitor (CBST) between charged, HDRV does switch since BST-to-LX voltage below VBST_UVLO. internal charging circuit charges BST-LX supply through external Schottky diode within short time CBST charges through causes VBST exceed VBST_UVLO. HDRV then starts switching follows hysteresis 0.2V (typ) both UVLO thresholds. MAX15054 driver contains on-resistance p-channel n-channel devices totem pole configuration driver output stage. This allows rapid turn-on turn-off high gate-charge (Qg) external switching MOSFETs. driver exhibits drain-to-source resistance (RDS(ON)) that decreases lower operating temperatures. Lower RDS(ON) means higher source sink currents from device external MOSFET gate capacitance charges discharges quicker rate, resulting faster switching speeds. peak source sink current provided driver 2.5A (typ). Propagation delay from logic input (HI) driver output 12ns (typ) (Figure internal driver also contains break-before-make logic eliminate shootthrough conditions that cause unnecessarily high operating supply currents, efficiency reduction, voltage spikes VDD. Voltage from HDRV approximately equal minus diode drop bootstrap diode when high state, zero when state.
Undervoltage Lockout
Connect external Schottky diode between BST, conjunction with external bootstrap capacitor (CBST), provide voltage required turn MOSFET (see Typical Operating Circuits). diode charges bootstrap capacitor from when high-side switch off, isolates when HDRV pulled high when driver turns bootstrap capacitor (CBST) between used ensure adequate charge available switch high-side MOSFET. This capacitor charged from external bootstrap diode when MOSFET off. bootstrap capacitor value should selected carefully avoid oscillations during turn-on turnoff HDRV output. Choose capacitor value least times greater than total gate capacitance MOSFET being switched. low-ESR ceramic capacitor (typically minimum 0.1FF needed). high-side MOSFET's continuous on-time limited charge loss from high-side driver's quiescent current. maximum on-time dependent size CBST, IBST (125FA, max), VBST_UVLO. MAX15054 features CMOS logic input. required logic-input levels independent capable withstanding 13.5V. example, MAX15054 powered supply while logic inputs provided from logic. Additionally, protected against voltage spikes 15V, regardless voltage. logic input 900mV hysteresis avoid double pulsing during signal transition. logic input high-impedance input (300kI, typ) should left unconnected ensure input logic state known level. With logic input unconnected, HDRV pulls rises above UVLO threshold. output from controller must assume proper state while powering device.
Bootstrap Diode
MAX15054
Bootstrap Capacitor
Output Driver
Driver Logic Input (HI)
High-Side MOSFET Driver Drivers DC-DC Applications MAX15054
Typical Operating Circuits (continued)
CBST
MAX15054
HDRV
COUT
NDRV
VDRV
OUT1
OUT4
MAX16814
ISET
FLAG
LEDGND
RSDT COMP SGND PGND
High-Side MOSFET Driver Drivers DC-DC Applications
Configuration
PROCESS: BiCMOS
_Chip Information
MAX15054
VIEW
Package Information
latest package outline information land patterns, www.maxim-ic.com/packages. PACKAGE TYPE PACKAGE CODE U6+1 DOCUMENT 21-0058 SOT23
MAX15054
HDRV
SOT23
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600
2009 Maxim Integrated Products
Maxim registered trademark Maxim Integrated Products, Inc.

High-Side MOSFET Driver Drivers DC-DC Applications MAX15054 high-

Top Searches for this datasheet

Other recent searches