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MAX15005A 데이터시트 PDF




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부품번호 MAX15005A 기능
기능 4.5V to 40V Input Automotive Flyback/Boost/SEPIC Power-Supply Controllers
제조업체 Maxim Integrated
로고 Maxim Integrated 로고


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MAX15005A 데이터시트, 핀배열, 회로
EVALUATION KIT AVAILABLE
MAX15004A/B-MAX15005A/B
General Description
The MAX15004A/B/MAX15005A/B high-performance,
current-mode PWM controllers operate at an automotive
input voltage range from 4.5V to 40V (load dump). The
input voltage can go lower than 4.5V after startup if IN is
bootstrapped to a boosted output voltage. The controllers
integrate all the building blocks necessary for implementing
fixed-frequency isolated/nonisolated power supplies. The
general-purpose boost, flyback, forward, and SEPIC con-
verters can be designed with ease around the MAX15004/
MAX15005.
The current-mode control architecture offers excellent line-
transient response and cycle-by-cycle current limit while
simplifying the frequency compensation. Programmable
slope compensation simplifies the design further. A fast
60ns current-limit response time, low 300mV current-limit
threshold makes the controllers suitable for high-efficiency,
high-frequency DC-DC converters. The devices include
an internal error amplifier and 1% accurate reference to
facilitate the primary-side regulated, single-ended flyback
converter or nonisolated converters.
An external resistor and capacitor network programs the
switching frequency from 15kHz to 500kHz (1MHz for
the MAX15005A/B). The MAX15004A/B/MAX15005A/B
provide a SYNC input for synchronization to an
external clock. The maximum FET-driver duty cycle for the
MAX15004A/B is 50%. The maximum duty cycle can be
set on the MAX15005A/B by selecting the right combina-
tion of RT and CT.
The input undervoltage lockout (ON/OFF) programs the
input-supply startup voltage and can be used to shutdown
the converter to reduce the total shutdown current down
to 10µA. Protection features include cycle-by-cycle and
hiccup current limit, output over-voltage protection, and
thermal shutdown.
The MAX15004A/B/MAX15005A/B are available in space-
saving 16-pin TSSOP and thermally enhanced 16-pin
TSSOP-EP packages. All devices operate over the -40°C
to +125°C automotive temperature range.
Applications
● Automotive
● Vacuum Fluorescent Display (VFD) Power Supply
● Isolated Flyback, Forward, Nonisolated SEPIC, Boost
Converters
Pin Configuration appears at end of data sheet.
4.5V to 40V Input Automotive
Flyback/Boost/SEPIC
Power-Supply Controllers
Benefits and Features
● Wide Supply Voltage Range Meets Automotive
Power-Supply Operating Requirement Including
“Cold Crank” Conditions
• 4.5V to 40V Operating Input Voltage Range
(Can Operate at Lower Voltage After Startup if
Input is Bootstrapped to a Boosted Output)
● Control Architecture Offers Excellent Performance
While Simplifying the Design
• Current-Mode Control
• 300mV, 5% Accurate Current-Limit Threshold
Voltage
• Programmable Slope Compensation
• 50% (MAX15004) or Adjustable (MAX15005)
Maximum Duty Cycle
● Accurate, Adjustable Switching Frequency and
Synchronization Avoids Interference with Sensitive
Radio Bands
• Switching Frequency Adjustable from 15kHz to
500kHz (1MHz for the MAX15005A/B)
• RC Programmable 4% Accurate Switching
Frequency
• External Frequency Synchronization
● Built-In Protection Capability for Improved System
Reliability
• Cycle-by-Cycle and Hiccup Current-Limit
Protection
• Overvoltage and Thermal-Shutdown Protection
• -40°C to +125°C Automotive Temperature Range
• AEC-Q100 Qualified
Ordering Information
PART
PIN-PACKAGE MAX DUTY CYCLE
MAX15004AAUE+ 16 TSSOP-EP*
50%
MAX15004AAUE/V+ 16 TSSOP-EP*
50%
MAX15004BAUE+ 16 TSSOP
50%
MAX15004BAUE/V+ 16 TSSOP
50%
MAX15005AAUE+ 16 TSSOP-EP*
Programmable
MAX15005AAUE/V+ 16 TSSOP-EP*
Programmable
MAX15005BAUE+ 16 TSSOP
Programmable
MAX15005BAUE/V+ 16 TSSOP
Programmable
Note: All devices are specified over the -40°C to +125°C
temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
*EP = Exposed pad.
19-0723; Rev 5; 9/15




MAX15005A pdf, 반도체, 판매, 대치품
MAX15004A/B-MAX15005A/B
4.5V to 40V Input Automotive
Flyback/Boost/SEPIC
Power-Supply Controllers
Electrical Characteristics (continued)
(VIN = 14V, CIN = 0.1μF, CVCC = 0.1μF // 1μF, CREG5 = 1μF, VON/OFF = 5V, CSS = 0.01μF, CSLOPE = 100pF, RT = 13.7kΩ, CT = 560pF,
VSYNC = VOVI = VFB = VCS = 0V, COMP = unconnected, OUT = unconnected. TA = TJ = -40°C to +125°C, unless otherwise noted.
Typical values are at TA = +25°C. All voltages are referenced to PGND, unless otherwise noted.) (Note 1) (Figure 5)
PARAMETER
COMP Source Current
COMP High Voltage
COMP Low Voltage
Open-Loop Gain
Unity-Gain Bandwidth
Phase Margin
COMP Positive Slew Rate
COMP Negative Slew Rate
PWM COMPARATOR
Current-Sense Gain
PWM Propagation Delay to OUT
SYMBOL
ICOMP-
SOURCE
CONDITIONS
VFB = 1V, VCOMP = 4.5V
VOH-COMP VFB = 1V, ICOMP = 1mA (sourcing)
VOL-COMP
AEAMP
UGFEAMP
PMEAMP
SR+
SR-
VFB = 1.5V, ICOMP = 1mA (sinking)
ACS-PWM
tPD-PWM
ΔVCOMP/ΔVCS (Note 5)
CS = 0.15V, from VCOMP falling edge:
3V to 0.5V to OUT falling (excluding
leading-edge blanking time)
MIN TYP MAX UNITS
1.3 2.8
mA
VREG5
- 0.5
VREG5
- 0.2
0.1
100
1.6
75
0.5
-0.5
0.25
V
V
dB
MHz
degrees
V/µs
V/µs
2.85
3
3.15
V/V
60 ns
PWM Comparator Current-Sense
Leading-Edge Blanking Time
CURRENT-LIMIT COMPARATOR
Current-Limit Threshold Voltage
Current-Limit Input Bias Current
ILIMIT Propagation Delay to OUT
tCS-BLANK
VILIM
IB-CS
tPD-ILIM
OUT= high, 0 ≤ VCS ≤ 0.3V
From CS rising above VILIM (50mV
overdrive) to OUT falling (excluding
leading-edge blanking time)
50 ns
290 305 317
-2 +2
60
mV
µA
ns
ILIM Comparator Current-Sense
Leading-Edge Blanking Time
Number of Consecutive ILIMIT
Events to HICCUP
tCS-BLANK
HICCUP Timeout
SLOPE COMPENSATION (Note 6)
Slope Capacitor Charging Current
Slope Compensation
Slope Compensation Tolerance
(Note 2)
ISLOPE
Slope Compensation Range
VSLOPE = 100mV
CSLOPE = 100pF
CSLOPE = 100pF
CSLOPE = 22pF
CSLOPE = 1000pF
50 ns
7
512
Clock
periods
9.8 10.5 11.2
µA
25 mV/µs
-4 +4 %
110
2.5
mV/µs
www.maximintegrated.com
Maxim Integrated 4

4페이지










MAX15005A 전자부품, 판매, 대치품
MAX15004A/B-MAX15005A/B
4.5V to 40V Input Automotive
Flyback/Boost/SEPIC
Power-Supply Controllers
Typical Operating Characteristics (continued)
VIN = 14V, CIN = 0.1μF, CVCC = 0.1μF // 1μF, CREG5 = 1μF, VON/OFF = 5V, CSS = 0.01μF, CSLOPE = 100pF, RT = 13.7kΩ,
CT = 560pF. TA = +25°C, unless otherwise noted.)
MAX15005 MAXIMUM DUTY CYCLE
vs. OUTPUT FREQUENCY (fOUT)
100
95 CT = 100pF
90
85
80
75 CT = 3300pF
70 CT = 2200pF
65 CT = 1500pF
60
55
CT = 1000pF
CT = 560pF
CT = 220pF
50
10
100
OUTPUT FREQUENCY (kHz)
1000
MAXIMUM DUTY CYCLE
vs. fSYNC/fOSC RATIO
80 MAX15005
75
70
CT = 560pF
RT = 10k
fOSC = fOUT = 180kHz
65
60 CRTCT = 220pF
RRTCT = 10k
55 fOSC = fOUT = 418kHz
50
1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
fSYNC/fOSC RATIO
MAX15004 MAXIMUM DUTY CYCLE
vs. TEMPERATURE
55
54 fOUT = 75kHz
53
52
51
50
49
48
47
46
45
-40 -15 10 35 60 85 110 135
TEMPERATURE (°C)
ERROR AMPLIFIER OPEN-LOOP GAIN
AND PHASE vs. FREQUENCY
110
MAX15004 toc14
100 340
90 GAIN
80
300
70 260
60
50 220
40
30
20 PHASE
180
140
10 100
0
-10 60
0.1 1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
OVI TO OUT DELAY THROUGH
OVERVOLTAGE COMPARATOR
MAX15004 toc16
VOUT
VOUT
VOVI 2V/div
DRIVER OUTPUT PEAK SOURCE
AND SINK CURRENT
MAX15004 toc17
COUT = 10nF
VOUT
5V/div
VOVI
500mV/div
IOUT
1A/div
MAX15005 MAXIMUM DUTY CYCLE
vs. TEMPERATURE
85
83
CT = 560pF
RT = 13.7k
81 fOSC = fOUT = 150kHz
79
77
75
73
71
69
67
65
-40 -15 10 35 60 85 110 135
TEMPERATURE (°C)
CS-TO-OUT DELAY vs. TEMPERATURE
100
MAX15004 toc15
90 VCS OVERDRIVE = 50mV
80
70
60
50 VCS OVERDRIVE = 190mV
40
30
20
10
0
-40 -15 10 35 60 85 110 135
TEMPERATURE (°C)
POWER-UP SEQUENCE THROUGH VIN
MAX15004 toc18
VON/OFF = 5V
VIN
10V/div
VCC
5V/div
REG5
5V/div
VOUT
5V/div
1µs/div
400ns/div
2ms/div
www.maximintegrated.com
Maxim Integrated 7

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(MAX15004 / MAX15005) 4.5V to 40V Input Automotive Flyback/Boost/SEPIC Power-Supply Controllers

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4.5V to 40V Input Automotive Flyback/Boost/SEPIC Power-Supply Controllers

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