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LCS703HG 데이터시트 PDF




Power Integrations에서 제조한 전자 부품 LCS703HG은 전자 산업 및 응용 분야에서
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부품번호 LCS703HG 기능
기능 (LCS700 - LCS708) Integrated LLC Controller
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LCS703HG 데이터시트, 핀배열, 회로
www.DataSheet.co.kr
LCS700-708
HiperLCSFamily
Integrated LLC Controller, High-Voltage
Power MOSFETs and Drivers
Product Highlights
Features
LLC half-bridge power stage incorporating controller, high and
low-side gate drives, and high-voltage power MOSFETs
Eliminates up to 30 external components
High maximum operating frequency of 1 MHz
Nominal steady-state operation up to 500 kHz
Dramatically reduces magnetics size and allows use of
SMD ceramic output capacitors
Precise duty symmetry balances output rectifier current,
improving efficiency
50% ±0.3% typical at 300 kHz
Comprehensive fault handling and current limiting
Programmable brown-in/out thresholds and hysteresis
Undervoltage (UV) and overvoltage (OV) protection
Programmable over-current protection (OCP)
Short-circuit protection (SCP)
Over-temperature protection (OTP)
Programmable dead-time for optimized design
Programmable burst mode maintains regulation at no-load and
improves light load efficiency
Programmable soft-start time and delay before soft-start
Accurate programmable minimum and maximum frequency
limits
Single package designed for high-power and high-frequency
Reduces assembly cost and reduces PCB layout loop areas
Simple single clip attachment to heat sink
Exposed thermal pad connected to ground potential – no
insulators required between package and heat sink
Staggered pin arrangement for simple PC board routing
and high-voltage creepage requirements
Paired with HiperPFS PFC product gives complete, high
efficiency, low part count PSU solutions
Applications
High-efficiency power supplies (80 PLUS Silver, Gold and
Platinum)
LCD TV power supplies
LED street and area lighting
Printer power supplies
Audio amplifier
Description
The HiperLCS is an integrated LLC power stage incorporating a
multi-function controller, high-side and low-side gate drivers,
plus two power MOSFETs in a half-bridge configuration. Figure
1 shows a simplified schematic of a HiperLCS based power stage
where the LLC resonant inductor is integrated into the transformer.
The variable frequency controller provides high efficiency by
switching the power MOSFETs at zero voltage (ZVS), eliminating
switching losses. 
B+
VCCH
D
Standby
Supply
VCC
CONTROL
HB
+V
HV DC
Input
B-
OV/UV
VREF
RFMAX
DT/BF
RBURST
FB
G
IS
HiperLCS
S1/S2
RTN
LLC Feedback Circuit
PI-6159-060211
Figure 1. Typical Application Circuit – LCD TV and PC Main Power Supply.
Output Power Table
Product
Maximum Practical Power1
LCS700HG
110 W
LCS701HG
170 W
LCS702HG
220 W
LCS703HG
275 W
LCS705HG
350 W
LCS708HG
440 W
Table 1. Output Power Table.
Notes:
1. Maximum practical power is the power the part can deliver when properly
mounted to a heat sink and a maximum heat sink temperature of 90 °C.
www.powerint.com
June 2011
Datasheet pdf - http://www.DataSheet4U.net/




LCS703HG pdf, 반도체, 판매, 대치품
www.DataSheet.co.kr
LCS700-708
Figure 4. 150 W Laser-Jet Printer Power Supply.
4
Rev. B 062011
www.powerint.com
Datasheet pdf - http://www.DataSheet4U.net/

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LCS703HG 전자부품, 판매, 대치품
www.DataSheet.co.kr
LCS700-708
Figure 7 shows a an example of preferred routing for the
optocoupler and traces connected to the FEEDBACK pin. The
optocoupler is spaced away from the transformer, reducing
noise pickup. The optocoupler output trace (from pin 3) is also
routed to increase the distance between it and “active”
components and traces, such as T1 and the hot side of
capacitor C12. Resistor R20 is located close to U1 rather than
optocoupler U2, so that any noise picked up on the optocoupler
trace is filtered by the combination of R20 and C4 before it gets
to the FEEDBACK pin on U1. C4 is placed directly adjacent to
the FEEDBACK pin of U1 (pin 4).
VCCH is connected to the standby supply through a high-
voltage ultrafast diode and a 2.2 W resistor connected in series.
This diode resistor network charges the VCCH bypass/storage
capacitor whenever the internal LLC low-side MOSFET is on.
The resistor limits the peak instantaneous charging current.
See R6 and D1 in Figure 8.
G Pin
Figure 5. Placement of Bypass Capacitors on Signal Pins of IC.
Figure 6. Alternate Layout for LCS Footprint using Round Pads with Jumper Connecting
Two Grounds Highlighted.
www.powerint.com
7
Rev. B 062011
Datasheet pdf - http://www.DataSheet4U.net/

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부품번호상세설명 및 기능제조사
LCS703HG

(LCS700 - LCS708) Integrated LLC Controller

Power Integrations
Power Integrations

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