LYT6070C Driver Datasheet

LYT6070C Datasheet, PDF, Equivalent


Part Number

LYT6070C

Description

Flyback CV/CC LED Driver

Manufacture

Power Integrations

Total Page 30 Pages
Datasheet
Download LYT6070C Datasheet


LYT6070C
LYTSwitch-6 Family
Flyback CV/CC LED Driver IC with Integrated
High-Voltage Switch and FluxLink Feedback
Product Highlights
Highly Integrated, Compact Footprint
Up to 94% efficiency across full load range
Incorporates a multi-mode Quasi-Resonant (QR) / CCM / DCM flyback
controller, high-voltage switch, secondary-side control and synchro-
nous rectification driver
Integrated FluxLink™, HIPOT-isolated, feedback link
Exceptional CV/CC accuracy, independent of transformer design or
external components
Adjustable accurate output current sense using external sense resistor
PowiGaN™ technology – up to 100 W without heatsinks (LYT6079C
and LYT6070C)
EcoSmart™ – Energy Efficient
Less than 30 mW no-load including line sense (without PF front end)
Designs using LYTSwitch-6 easily meet Energy Star and all global
lighting energy efficiency regulations
Low heat dissipation
Advanced Protection / Safety Features
Input line OV with auto-restart
Output fault OVP/UVP with auto-restart
Open SR FET gate detection
Input voltage monitor with accurate brown-in
Thermal foldback ensures that power continues to be delivered
(lower level) at elevated temperatures
Full Safety and Regulatory Compliance
Reinforced insulation
Isolation voltage >4000 VAC
100% production HIPOT compliance testing
UL1577 and TUV (EN 60950)
Green Package
Halogen free and RoHS compliant
Applications
Isolated off-line LED driver
Smart LED lighting
High-voltage flyback post regulator
Description
The LYTSwitch™-6 series family of ICs dramatically simplifies the
development and manufacturing of off-line LED drivers, particularly
those in compact enclosures or with high efficiency requirements.
The LYTSwitch-6 architecture is revolutionary in that the devices
incorporate both primary and secondary controllers, with sense
elements and a safety-rated feedback mechanism into a single IC.
Close component proximity and innovative use of the integrated
communication link, FluxLink, permit accurate control of a secondary-
side synchronous rectification MOSFET with Quasi-Resonant switching
of primary integrated high-voltage switch to maintain high efficiency
across the entire load range.
SR FET
D
LYTSwitch-6
Primary Switch
and Controller
S
V
BPP
Figure 1. Typical Application/Performance.
VOUT
IS Secondary
Control IC
Optional
Current
Sense
PI-8375-112718
Figure 2. High Creepage, Safety-Compliant InSOP-24D Package.
Output Power Table
Product 2,3
277 VAC ± 15% 85-305 VAC
380 VDC /
450 VDC2
Open Frame1 Open Frame1 Open Frame1
LYT6063C/6073C
15 W
12 W
25 W
LYT6065C/6075C
30 W
25 W
40 W
LYT6067C/6077C
50 W
45 W
60 W
LYT6068C
65 W
55 W
LYT6079C
85 W
75 W
100 W
LYT6070C
95 W
85 W
110 W
Table 1. Output Power Table.
Notes:
1. Minimum continuous power in a typical non-ventilated and PCB size measured
at 40 °C ambient. Max output power is dependent on the design. With
condition that package temperature must be < 125 °C.
2. Package: InSOP-24D.
3. LYT606x ‒ 650 V MOSFET, LYT607x ‒ 750 V MOSFET, LYT6079 and
LYT6070 ‒ 750 V PowiGaN switch.
www.power.com
This Product is Covered by Patents and/or Pending Patent Applications.
November 2019

LYT6070C
LYTSwitch-6
DRAIN
(D)
GATE
UNDER/OVER
INPUT VOLTAGE (V)
PRIMARY BYPASS
REGULATOR
PRIMARY BYPASS
(BPP)
LINE
INTERFACE
UV/OV
GATE
ENABLE
BPP/UV
AUTO-RESTART
COUNTER
RESET
PRIM-CLK
OSCILLATOR/
TIMERS
JITTER
ENABLE
FAULT
PRIMARY
BYPASS PIN
CAPACITOR
SELECT AND
CURRENT
LIMIT
PRIMARY
BPP/UV BYPASS PIN
UNDERVOLTAGE
+
VILIM
-
VSHUNT
VBP+
Power
MOSFET
SenseFET
IS
THERMAL
SHUTDOWN
tON(MAX) tOFF(BLOCK)
GATE
GATE
BPP
OV/UV
DRIVER
LEB
BPP/UV
ILIM
QS
QR
FAULT
SecREQ
PRIM/SEC
tOFF(BLOCK)
SEC-
LATCH
SecPulse
PRIM/SEC
RECEIVER
CONTROLLER
PRIM-CLK
From
Secondary
Controller
VILIM
+
-
tON(MAX)
LATCH-OFF/
AUTO-RESTART
PRIMARY OVP
LATCH/
AUTO-RESTART
SOURCE
(S)
Figure 3. Primary Controller Block Diagram.
PI-8044g-041819
FORWARD
(FWD)
SYNCRONOUS RECTIFIER DRIVE
(SR)
OUTPUT VOLTAGE
(VOUT)
VOUT
INH
ENABLE
SR
DETECTOR
+
SR
THRESHOLD
QR
SQ
RQ
SR CONTROL
FORWARD
BPSUV
REGULATOR
VBPS
+
-
VBPS(UVLO)(TH)
To
Primary
Receiver
FEEDBACK
DRIVER
HANDSHAKE/
FAULT DETECTION
INH
QR
CONTROL
INH
DCM
SECONDARY
LATCH /
AUTO-RESTART
+
- VREF
SECONDARY
BYPASS
(BPS)
FEEDBACK
(FB)
TsMAX
OSCILLATOR/
TIMER
tOFF(MIN)
tSS(RAMP)
tSECINH(MAX)
FEEDBACK
COMPENSATION
+
-
THERMAL
FOLDBACK
SECONDARY ISENSE
GROUND
(IS)
(GND)
PI-8045h-080619
Figure 4. Secondary Controller Block Diagram.
2
Rev. I 11/19
www.power.com


Features LYTSwitch-6 Family Flyback CV/CC LED Dr iver IC with Integrated High-Voltage Sw itch and FluxLink Feedback Product Hig hlights Highly Integrated, Compact Foot print • Up to 94% efficiency across f ull load range • Incorporates a multi -mode Quasi-Resonant (QR) / CCM / DCM f lyback controller, high-voltage switch, secondary-side control and synchronous rectification driver • Integrated Fl uxLink™, HIPOT-isolated, feedback lin k • Exceptional CV/CC accuracy, indep endent of transformer design or externa l components • Adjustable accurate ou tput current sense using external sense resistor • PowiGaN™ technology – up to 100 W without heatsinks (LYT6079 C and LYT6070C) EcoSmart™ – Energy Efficient • Less than 30 mW no-load i ncluding line sense (without PF front e nd) • Designs using LYTSwitch-6 easil y meet Energy Star and all global light ing energy efficiency regulations • L ow heat dissipation Advanced Protection / Safety Features • Input line OV with auto-restart • Output fault OVP/UVP with auto-resta.
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