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.

The variable frequency controller provides high efficiency by switching the power MOSFETs at zero voltage (ZVS), eliminating switching losses.

HiperLCS系列主要特性:

• 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

HiperLCS系列應(yīng)用:

• High-efficiency power supplies (80 PLUS Silver, Gold and Platinum)

• LCD TV power supplies

• LED street and area lighting

• Printer power supplies

• Audio amplifier

圖1. HiperLCS系列方框圖

圖2.150 W 激光打印機電源

采用HiperLCSTM LCS702HG的150W LLC高壓DC/DC諧振轉(zhuǎn)換器參考設(shè)計

This document is an engineering report describing a 24 V, 150 W LLC DC-DC converter utilizing a LCS702HG integrated LLC power stage IC. The report and board is intended as a general purpose test platform to demonstrate operation and capabilities of the HiperLCS family of devices.

The design operates from an input voltage range of 300 V to 420 V DC and requires an auxiliary supply of 12 V. The high-voltage DC input in a typical system would be supplied from a PFC stage and the 12 V from system bias or standby supply.

150W電源參考設(shè)計主要特性:

? Low parts count, low cost, simple resonant (LLC) converter

? Integration of controller, high-side and low-side MOSFETS and drivers reduces

   component count and design effort

? High operating frequency (250 kHz)

? Reduces transformer core size (EEL25) and size of converter

? Enables ceramic in place of electrolytic output capacitors

? High-efficiency

? >95% efficiency at full load

? >95% average efficiency (20%, 50%, 100% load points)

? Capacitive current sense for low power dissipation

? Burst mode ensures no-load regulation

圖3. 150W電源參考設(shè)計外形圖
150W電源參考設(shè)計指標:


圖5.150W電源參考設(shè)計電路圖
150W電源參考設(shè)計材料清單(BOM):



圖6. 150W電源變壓器電路框圖

圖7.150W電源PCB布局圖(頂層)


圖8.150W電源PCB布局圖(底層)
詳情請見:
http://www.powerint.com/sites/default/files/product-docs/hiperlcs_family_datasheet.pdf
和
http://www.powerint.com/sites/default/files/PDFFiles/rdr239.pdf