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LCS705LG Datasheet(PDF) 1 Page - Power Integrations, Inc. |
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LCS705LG Datasheet(HTML) 1 Page - Power Integrations, Inc. |
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1 / 30 page  HiperLCS Family www.power.com May 2017 Integrated LLC Controller, High-Voltage Power MOSFETs and Drivers This Product is Covered by Patents and/or Pending Patent Applications. 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 • 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. Figure 1. Typical Application Circuit – LCD TV and PC Main Power Supply. LLC Feedback Circuit HiperLCS HB VREF DT/BF R FMAX R BURST IS FB VCC VCCH HV DC Input OV/UV G S1/S2 D PI-6159-060211 Standby Supply CONTROL B+ +V RTN B- Output Power Table Product Maximum Practical Power1 LCS700HG/LG 110 W LCS701HG/LG 170 W LCS702HG/LG 220 W LCS703HG/LG 275 W LCS705HG/LG 350 W LCS708HG/LG 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. |
Similar Part No. - LCS705LG |
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Similar Description - LCS705LG |
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