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Flyback Controller. LT8316 Datasheet

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Flyback Controller. LT8316 Datasheet






LT8316 Controller. Datasheet pdf. Equivalent




LT8316 Controller. Datasheet pdf. Equivalent





Part

LT8316

Description

Micropower No-Opto Isolated Flyback Controller



Feature


LT8316 600VIN Micropower No-Opto Isolate d Flyback Controller FEATURES nn Wide Input Voltage Range: 16V to 600V nn No Opto-Isolator Required for Regulation n n Quasi-Resonant Boundary Mode Operatio n nn Constant-Current and Constant-Volt age Regulation nn Low-Ripple Light Load Burst Mode® Operation nn Low Quiescen t Current: 75μA nn Programmable Curren t Limit and Soft-Sta.
Manufacture

Analog Devices

Datasheet
Download LT8316 Datasheet


Analog Devices LT8316

LT8316; rt nn TSSOP Package with High-Voltage Sp acing APPLICATIONS nn Isolated Telecom, Automotive, Industrial, Medical Power Supplies nn Isolated Off-Line Housekeep ing Power Supplies nn Electric Vehicles and Battery Stacks nn Multioutput Isol ated Power Supplies for Inverter Gate D rives DESCRIPTION The LT®8316 is a mi cropower, high voltage flyback controll er. No opto-isolato.


Analog Devices LT8316

r is needed for regulation. The device s amples the output voltage from the isol ated flyback waveform appearing across a third winding on the transformer. Qua si-resonant boundary mode operation imp roves load regulation, reduces transfor mer size, and maintain .


Analog Devices LT8316

.

Part

LT8316

Description

Micropower No-Opto Isolated Flyback Controller



Feature


LT8316 600VIN Micropower No-Opto Isolate d Flyback Controller FEATURES nn Wide Input Voltage Range: 16V to 600V nn No Opto-Isolator Required for Regulation n n Quasi-Resonant Boundary Mode Operatio n nn Constant-Current and Constant-Volt age Regulation nn Low-Ripple Light Load Burst Mode® Operation nn Low Quiescen t Current: 75μA nn Programmable Curren t Limit and Soft-Sta.
Manufacture

Analog Devices

Datasheet
Download LT8316 Datasheet




 LT8316
LT8316
600VIN Micropower No-Opto
Isolated Flyback Controller
FEATURES
nn Wide Input Voltage Range: 16V to 600V
nn No Opto-Isolator Required for Regulation
nn Quasi-Resonant Boundary Mode Operation
nn Constant-Current and Constant-Voltage Regulation
nn Low-Ripple Light Load Burst Mode® Operation
nn Low Quiescent Current: 75μA
nn Programmable Current Limit and Soft-Start
nn TSSOP Package with High-Voltage Spacing
APPLICATIONS
nn Isolated Telecom, Automotive, Industrial, Medical
Power Supplies
nn Isolated Off-Line Housekeeping Power Supplies
nn Electric Vehicles and Battery Stacks
nn Multioutput Isolated Power Supplies for Inverter Gate
Drives
DESCRIPTION
The LT®8316 is a micropower, high voltage flyback con-
troller. No opto-isolator is needed for regulation. The
device samples the output voltage from the isolated fly-
back waveform appearing across a third winding on the
transformer. Quasi-resonant boundary mode operation
improves load regulation, reduces transformer size, and
maintains high efficiency.
At start-up, the LT8316 charges its INTVCC capacitor via
a high voltage current source. During normal operation,
the current source turns off and the device draws its
power from a third winding on the transformer minimiz-
ing standby power dissipation.
The LT8316 operates from a wide range of input supply
voltages and can deliver up to 100W of power. It is avail-
able in a thermally enhanced 20-pin TSSOP package with
four pins removed for high-voltage spacing.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
VIN
16V TO 600V
16VIN to 600VIN Isolated 12VOUT Supply
8:1:1
4.7µF
VIN
EN/UVLO
BIAS
DCM
INTVCC
4.7µF
LT8316
SMODE
FB
TC
GATE
47pF
10k 44.2k
8.44µH
108k 4.99k
540µH
M1
V12OVUT+
8.44µH
1300µF
VOUT
30mA TO 800mA (VIN = 20V)
30mA TO 3A (VIN = 80V)
50mA TO 4A (VIN = 160V TO 600V)
VC SENSE
20k IREG/SS GND
100nF
61.9k
40mΩ
8316 TA01a
Efficiency
95
90
85
80
VIN = 20V
75
VIN = 80V
VIN = 160V
VIN = 320V
70 VIN = 600V
0123456
LOAD CURRENT (A)
8316 TA01b
Document Feedback
For more information www.analog.com
Rev. 0
1




 LT8316
LT8316
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN...........................................................................600V
BIAS, EN/UVLO..........................................................40V
INTVCC....................................................................... 15V
SMODE, GATE...................................................... INTVCC
SENSE, TC, FB, VC, IREG/SS........................................4V
DCM.................................................................... ±100mA
Operating Junction Temperature (Note 2)
LT8316E, LT8316I............................... −40°C to 125°C
Storage Temperature Range................... −65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
TOP VIEW
VIN 1
VIN 2
VIN 3
INTVCC 8
BIAS 9
DCM 10
20 GND
19 GATE
18 SENSE
17 EN/UVLO
21
GND
16 SMODE
15 GND
14 IREG/SS
13 VC
12 FB
11 TC
FE PACKAGE
20(16)-LEAD PLASTIC TSSOP
θJA = 38°C/W, θJC = 10°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT8316EFE#PBF
LT8316EFE#TRPBF
LT8316FE
20-Lead Plastic TSSOP
–40°C to 125°C
LT8316IFE#PBF
LT8316IFE#TRPBF
LT8316FE
20-Lead Plastic TSSOP
–40°C to 125°C
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
Rev. 0
2 For more information www.analog.com




 LT8316
LT8316
E LECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. BIAS = 30V, VEN/UVLO = 30V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
BIAS Chip Bias Voltage Supply Range After Startup
9.5 V
IQ BIAS Quiescent Current
Burst Mode Operation
Active
75 150
470 700
μA
ICLAMP(MAX)
VCLAMP
ISHDN
VIN(MIN)
ISTARTUP
VUVLO
VREG
GM
VTC
BIAS Clamp Maximum Current
BIAS Clamping Voltage
VIN Shutdown Current
Minimum Input Voltage for Startup
Startup Current Out of INTVCC
EN/UVLO Threshold
EN/UVLO Hysteresis
INTVCC UVLO Rising Threshold
INTVCC UVLO Falling Threshold
INTVCC Regulation Voltage
INTVCC LDO Dropout Voltage
Gate Driver Rise Time
Gate Driver Fall Time
FB Regulation Voltage
Voltage Error Amplifier Transconductance
TC Voltage
TC Voltage Temperature Coefficient
ICLAMP = 200µA
ICLAMP = 15mA
VEN/UVLO < 0.3V, BIAS = Floating
BIAS = Floating
VIN = 16V, BIAS = Floating
VVEENN//UUVVLLOO
Falling
Rising
Startup Current through Depletion FET
Drawing 20mA from INTVCC
Drawing 20mA from INTVCC
CGATE = 3.3nF, 10% to 90%
CGATE = 3.3nF, 90% to 10%
VFB = 1.22V ± 5mV
TA = 25°C
34
35
l
l 100
1.18
30
11.1
7.6
9.5
12
300
1.22
65
12
8.1
10
l 1.18
245
30
8
1.22
350
1.22
+4.1
15
38
39
20
16
1.26
120
13.1
8.6
10.5
1
1.25
455
mA
V
V
μA
V
μA
V
mV
V
V
V
V
ns
ns
V
μS
V
mV/°C
ITC
IIREG/SS
IDCM
VSENSE(MIN)
VSENSE(MAX)
TC Sinking/Sourcing Current
IREG/SS Current
Flyback Collapse Detection Threshold
Resonant Valley Detection Threshold
Minimum Current Voltage Threshold
Maximum Current Voltage Threshold
SENSE Input Bias Current
Current Out-of-Pin
IDCM Rising
IDCM Falling
Current Out-of-Pin
±100
9.7 10
−170
−85
14 20
90 100
35
10.3
26
110
μA
μA
μA
μA
mV
mV
µA
FSW(MIN)
Minimum Switching Frequency
Burst Mode
Standby Mode
3 3.5
187 220
4
250
kHz
Hz
FSW(MAX)
Maximum Switching Frequency
138 140
142
kHz
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT8316E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the −40°C
to 125°C operating junction temperature range are assured by design
characterization and correlation with statistical process controls. The
LT8316I is guaranteed over the full −40°C to 125°C operating junction
temperature range. High junction temperatures degrade operating
lifetimes. Operating lifetime is derated at junction temperatures greater
than 125°C.
For more information www.analog.com
Rev. 0
3



Recommended third-party LT8316 Datasheet






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