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MAX15000 PDF даташит

Спецификация MAX15000 изготовлена ​​​​«Maxim Integrated Products» и имеет функцию, называемую «(MAX15000 / MAX15001) Current-Mode PWM Controllers».

Детали детали

Номер произв MAX15000
Описание (MAX15000 / MAX15001) Current-Mode PWM Controllers
Производители Maxim Integrated Products
логотип Maxim Integrated Products логотип 

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MAX15000 Даташит, Описание, Даташиты
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19-3957; Rev 0; 1/06
Current-Mode PWM Controllers with
Programmable Switching Frequency
General Description
The MAX15000/MAX15001 current-mode PWM con-
trollers contain all the control circuitry required for the
design of wide-input-voltage isolated and nonisolated
power supplies. The MAX15000 is well suited for uni-
versal input (rectified 85VAC to 265VAC) or telecom
(-36VDC to -72VDC) power supplies. The MAX15001
is well suited for low input voltage (9.5VDC to 24VDC)
power supplies.
The MAX15000/MAX15001 contain an internal error
amplifier that regulates the tertiary winding output volt-
age which is used in primary-side-regulated isolated
power supplies. Primary-side regulation eliminates the
need for an optocoupler. An input undervoltage lockout
(UVLO) is provided for programming the input-supply
start voltage and to ensure proper operation during
brownout conditions. An open-drain UVLO flag output,
with 210µs internal delay, allows the sequencing of a
secondary-side controller. The input-supply start volt-
age is externally programmable with a voltage-divider.
A UVLO/EN input is used to shutdown the MAX15000/
MAX15001. Internal digital soft-start eliminates output
voltage overshoot.
The MAX15000 has an internal bootstrap UVLO with
large hysteresis that requires a minimum 23.6V for start-
up. The MAX15001 does not have the internal bootstrap
UVLO and can be biased directly from a minimum volt-
age of 9.5V.
The switching frequency for the MAX15000/MAX15001 is
programmable with an external resistor. The MAX15000A/
MAX15001A provide a 50% maximum duty-cycle limit,
while the MAX15000B/MAX15001B provide a 75% maxi-
mum duty-cycle limit. These devices are available in 10-
pin µMAX® packages and are rated for operation over the
-40°C to +85°C temperature range.
Applications
1/2, 1/4, and 1/8th Brick Power Modules
High-Efficiency, Isolated Telecom Power
Supplies
Networking/Servers
Isolated Keep-Alive Power Supplies
12V Boost and SEPIC Regulators
Isolated and Nonisolated High-Brightness LED
Power Supplies
Industrial Power Conversion
Selector Guide appears at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Features
Current-Mode Control
Programmable Switching Frequency Up to 625kHz
Accurate UVLO Threshold (1%)
Open-Drain UVLO Flag Output with Internal Delay
36V to 72V Telecom Voltage Range
Universal Offline Input Voltage Range
Rectified 85VAC to 265VAC (MAX15000)
9.5V to 24V Input (MAX15001)
Digital Soft-Start
Internal Bootstrap UVLO with Large Hysteresis
(MAX15000)
Internal Error Amplifier with 1.5% Accurate
Reference
50µA (typ) Startup Supply Current
50% Maximum Duty-Cycle Limit
(MAX15000A/MAX15001A)
75% Maximum Duty-Cycle Limit
(MAX15000B/MAX15001B)
60ns Cycle-by-Cycle Current-Limit Propagation
Delay
Available in Tiny 10-Pin µMAX Packages
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX15000AEUB+ -40°C to +85°C 10 µMAX
U10-2
MAX15000BEUB+ -40°C to +85°C 10 µMAX
U10-2
MAX15001AEUB+ -40°C to +85°C 10 µMAX
U10-2
MAX15001BEUB+ -40°C to +85°C 10 µMAX
U10-2
Warning: The MAX15000/MAX15001 are designed to work with
high voltages. Exercise caution.
+Denotes lead-free package.
Pin Configuration
TOP VIEW
UVLO/EN 1
UFLG 2
FB 3
COMP 4
CS 5
MAX15000
MAX15001
µMAX
10 IN
9 VCC
8 NDRV
7 GND
6 RT
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.









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MAX15000 Даташит, Описание, Даташиты
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Current-Mode PWM Controllers with
Programmable Switching Frequency
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +30V
IN Clamp (Internal Shunt) Current ........................................5mA
VCC to GND ............................................................-0.3V to +13V
FB, COMP, UVLO/EN, RT, CS to GND .....................-0.3V to +6V
UFLG to GND .........................................................-0.3V to +30V
NDRV to GND ............................................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ........444.4mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range ............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = +12V (for MAX15000, bring VIN up to 23.6V for startup), 10nF bypass capacitors at IN and VCC, R12 = 15k(MAX1500_A), R12
= 7.5k(MAX1500_B), R15 = 1k, C6 = 100nF (see the Typical Application Circuit), NDRV = open, VUVLO/EN = +1.4V, VFB = +1.0V,
COMP = open, VCS = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
UVLO/STARTUP
Bootstrap UVLO Wake-Up Level
Bootstrap UVLO Shutdown Level
UVLO/EN Wake-Up Threshold
UVLO/EN Shutdown Threshold
UVLO/EN Input Current
UVLO/EN Hysteresis
VSUVR
VSUVF
VULR2
VULF2
IUVLO
VIN rising (MAX15000 only)
VIN falling (MAX15000 only)
UVLO/EN rising
UVLO/EN falling
VUVLO/EN 2V
19.68 21.6 23.60
V
9.05 9.74 10.43
V
1.218 1.23 1.242
V
1.14 1.17 1.20
V
-50 +50 nA
60 mV
IN Supply Current In UVLO
ISTART
VIN = 19V, MAX15000 only when in
bootstrap UVLO
50 90 µA
IN Input Voltage Range
UVLO/EN to UFLG Propagation
Delay (Figure 3)
VIN MAX15001 only
UVLO/EN steps up from 1V to 1.4V
UVLO/EN steps down from 1.4V to 1V
9.5 24.0 V
3
µs
0.6
UVLO/EN to NDRV Propagation
Delay (Figure 3)
tEXTR
tEXTF
UVLO/EN steps up from 1V to 1.4V
UVLO/EN steps down from 1.4V to 1V
3 10 ms
150 210 300
µs
Bootstrap UVLO Propagation
Delay
tBUVR
tBUVF
VIN steps up from 9V to 24V (MAX15000
only)
VIN steps down from 24V to 9V
(MAX15000 only)
5
1
µs
UFLG Low Output Voltage
VUFLG IUFLG = 5mA sinking
0.8 V
UFLG High Output Leakage
Current
VUFLG = 25V
0.1 1 µA
INTERNAL SUPPLY
VCC Regulator Set Point
VCCSP
VIN = 10.8V to 24V, sinking 1µA to 20mA
from VCC
7.0
10.5 V
IN Supply Current After Startup
Shutdown Supply Current
IIN VIN = 24V
UVLO/EN = low
2 4 mA
50 90 µA
2 _______________________________________________________________________________________









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MAX15000 Даташит, Описание, Даташиты
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Current-Mode PWM Controllers with
Programmable Switching Frequency
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +12V (for MAX15000, bring VIN up to 23.6V for startup), 10nF bypass capacitors at IN and VCC, R12 = 15k(MAX1500_A), R12
= 7.5k(MAX1500_B), R15 = 1k, C6 = 100nF (see the Typical Application Circuit), NDRV = open, VUVLO/EN = +1.4V, VFB = +1.0V,
COMP = open, VCS = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
GATE DRIVER
Driver Output Impedance
Driver Peak Sink Current
RON(LOW) Measured at NDRV sinking 100mA
RON(HIGH) Measured at NDRV sourcing 20mA
24
4 10
1A
Driver Peak Source Current
0.65 A
PWM COMPARATOR
Comparator Offset Voltage
CS Input Bias Current
Comparator Propagation Delay
CURRENT-LIMIT COMPARATOR
Current-Limit Trip Threshold
CS Input Bias Current
Propagation Delay From
Comparator Input to NDRV
VPWM
ICS
tPWM
VCS
ICS
tPDCS
VCOMP - VCS
VCS = 0V
Change in VCS = 0.1V
VCS = 0V
100mV overdrive
1.24
-4
900
-4
1.38 1.54
+4
60
1000
60
1100
+4
V
µA
ns
mV
µA
ns
IN CLAMP VOLTAGE
IN Clamp Voltage
ERROR AMPLIFIER
Voltage Gain
Unity-Gain Bandwidth
Phase Margin
FB Input Offset Voltage
VINC 2mA sink current (Note 2)
RLOAD = 100k
RLOAD = 100k, CLOAD = 200pF
RLOAD = 100k, CLOAD = 200pF
24.1 26.1 29.0
V
80 dB
2 MHz
65 degrees
±1 mV
COMP High Voltage
COMP Low Voltage
Source Current
ICOMP = 0
ICOMP = 0
2.8
V
1.1
0.5 mA
Sink Current
0.5 mA
Reference Voltage
Reference Voltage Accuracy
VREF (Note 3)
1.230
-1.5 +1.5
V
%
FB Input Bias Current
-50 +50 nA
COMP Short-Circuit Current
8 mA
DIGITAL SOFT-START
Soft-Start Duration
tSS
fSW = 350kHz
1984
5.6
NDRV
cycles
ms
Reference Voltage Steps During
Soft-Start
31 steps
Reference Voltage Step
39.67
mV
_______________________________________________________________________________________ 3










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