DC102A Analog Devices

DEMO MANUAL DC102 50V N-CHANNEL HALF BRIDGE LT1336 Half-Bridge N-Channel Power MOSFET Driver with Boost/Flyback Regulator DESCRIPTIO This demonstration circuit is an N-channel half-bridge for some other components in the space provided for general purpose applications. The half-bridge can be driven prototyping, this demo board can be turned into a com- with TTL/CMOS level signals into an LT 1336, which plete system solution. The half-bridge consists of four drives the N-channel MOSFETs. A self-contained high- power MOSFETs, two paralleled topside MOSFETs and side driver regulator allows PWM operation to 100% duty two paralleled bottom side MOSFETs. cycle without discontinuities. By adding a controller IC and , LTC and LT are registered trademarks of Linear Technology Corporation. Operating Temperature Range 0C to 50C, V = 12V unless otherwise noted. PERFORMANCE SUMM ARY IN SYMBOL PARAMETER CONDITION VALUE V LT1336 Input Voltage Range 10V to 15V IN I LT1336 Typical Supply Current INTOP = INBOTTOM = 0V 15mA Q HV High Voltage Range 0V to 50V (60V Abs Max) R Power MOSFETs R V = 10V 0.09 DS(ON) DS(ON) GS ESR ESR of Bypass Capacitor 100kHz 0.03 I Max Ripple Current 4.5A PK P Max Power Input (Note 1) 150W IN f Max Operating Frequency 100kHz MAX Note 1: For applications requiring higher input power, attach heat sinks to all power MOSFETs. BOARD PHOTOS Demo Board with a Flyback High-Side Driver Regulator Demo Board with a Boost High-Side Driver Regulator 1 WW UW UDEMO MANUAL DC102 50V N-CHANNEL HALF BRIDGE PACKAGE AND SCHEMATIC DIAGRAMS TOP VIEW D2 I SW SENSE 1N4148 E3 + SWGND V SV IN R2,2 10V TO 15V INTOP BOOST 1/4W, 5% T1* INBOTTOM TGATEDR D1 R1 TGATEFB UVOUT R7 1N4148 + C1 24k C9 6.2k 10F C11 1/4W SGND TSOURCE 1000pF 1/4W 25V 5% 0.1F D3 + 25V 5% PV 50V PGND 1N4148 BGATEDR BGATEFB N PACKAGE E4 16-LEAD PDIP 1 16 UVOUT I SW SENSE 2 15 LT1336CN + E5 SV SWGND INTOP 3 14 INTOP BOOST E1 E6 HV 4 13 INBOTTOM TGATEDR 0V TO 50V INBOTTOM R4 U1 C2 R3 10 LT1336 C3 TO C8 12 1F 5 + 10 1/4W UVOUT TGATEFB 330F 25V 1/4W 5% Q2 63V 6 11 5% SGND TSOURCE MTP50N06V 6 Q1 7 10 MTP50N06V + PGND PV E2 8 9 OUT BGATEFB BGATEDR R6 R5 10 D5 10 1/4W 1N5819 1/4W 5% E7 Q4 5% GND MTP50N06V Q3 *T1 = CTX100-1P MTP50N06V BOLD LINES INDICATE DM102A F01 HIGH CURRENT PATHS FOR BOOST TOPOLOGY REPLACE COMPONENTS IN DASHED AREA WITH THE INDUCTOR AS SHOWN IN FIGURE 2 Figure 1. Demonstration Circuit with a Flyback HIgh-Side Driver Regulator D2 1N4148 L1 REPLACES THE DASHED COMPONENTS IN FIGURE 1 C1 L1* + R2 10F 200H 2 25V 1/4W D1 E3 5% 1N4148 1 16 V I SW SENSE IN 10V TO 15V 2 15 + SV SWGND E5 3 14 INTOP BOOST INTOP E1 HV E6 4 13 INBOTTOM TGATEDR R4 0V TO 40V INBOTTOM U1 R1, 24k C2 + 10 R3 LT1336 1/4W, 5% 1F C3 TO C8 E4 5 12 1/4W + 10 UVOUT TGATEFB 330F 25V UVOUT 5% 1/4W Q2 63V 6 11 5% SGND TSOURCE MTP50N06V Q1 6 7 10 MTP50N06V + PGND PV E2 8 9 OUT BGATEFB BGATEDR R6, 10 R5 D5 1/4W 10 1N5819 5% 1/4W Q4 5% MTP50N06V Q3 MTP50N06V E7 GND DM102A F02 BOLD LINES INDICATE HIGH CURRENT PATHS * SUMIDA RCH-664D-221 KC Figure 2. Demonstration Circuit with a Boost High-Side Driver Regulator 2 W W U