TDA21107
TDA21107 Datasheet
DS-CoreControl-TDA21107
| Part | Datasheet |
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TDA21107 |
TDA21107 (pdf) |
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| Version Aug 2004 Datasheet DS-CoreControl-TDA21107 TDA21107 Published by Infineon Technologies AG Power Management & Drive CoreControl TM N e v e r s t o p t h i n k i n g. Page 1 of 12 DS-CoreControl-TDA21107 Contents: CoreControl TM Page 2 of 12 DS-CoreControl-TDA21107 High speed Driver with bootstrapping for dual Power MOSFETs Features: P-DSO-8 • Fast rise and fall times for frequencies up to 1 MHz • Adjustable High Side MOSFET gate drive voltage via external voltage supply to BOOT for optimizing ON losses and gate drive losses 5V to 12V is recommended • Prevents from cross-conducting by adaptive gate drive control • Supports shut-down mode for very low quiescent current through three-state input • Compatible to standard PWM controller ICs IFX, Intersil, Analog Devices, Richtek • Floating High Side MOSFET drive • Power-on Overvoltage Protection • Footprint compatible to ADP3418 • Ideal for multi-phase Desktop CPU supplies on motherboards and Application: • Voltage Regulator Modules • Low Output Voltage High Output Current DC-DC Converters • Half-Bridge Class D Amplifier Type TDA21107 Package P-DSOP-8 Marking 21107 Ordering Code Q67042-S4251 Pinout Drawing and Description: CoreControl TM Page 3 of 12 DS-CoreControl-TDA21107 The dual high speed driver is designed to drive a wide range of N-Channel low side and N-Channel high side MOSFETs with varying gate charges. It has a small propagation delay from PWM input pin to GATEHS and GATELS, short rise and fall times and the same pin configuration as the ADP3418. In addition it provides several protection features as well as a shut down mode for efficiency reasons. Target application The dual high speed driver is designed to work well in half-bridge type circuits where dual N-Channel MOSFETs are utilized. A circuit designer can fully take advantage of the capabilities in highefficiency, high-density synchronous DC/DC converters that operate at high switching frequencies, e.g. in multi-phase converters for CPU supplies on motherboards and but also in motor drive and half bridge class-D amplifier type applications. Block Diagram Internal 5V BOOT Control Logic Shoot Through Protection HS Driver PowerOn OVP LS Driver GATEHS PHAS GATELS CoreControl TM Page 4 of 12 DS-CoreControl-TDA21107 Application Circuit IPD09N03LA 1uF/16V R2 * PWM signal f rom CoreControl controller C BOOST GATEHS PWM PHASE PGND VCC GATELS R3* 1N4148 TDA21107 C7 1uF/16V IPD05N03LA * R2 is the optional resistor f or slowing down the high speed during turn-on * R3 is the 500K ohm resistor f or avoiding the f ault start-up behavior of driver during turn-on Layout Notice : C1 and C2 should be placed at the drain of Q1 and Q2 and the source of Q3 and Q4. C7 should be placed close to the VCC pin and GND pin of TDA21107. 1N4148, C6 and R2 should be placed close to TDA21107. The traces of GATEHS and PHASE should be routed in parallel and the trace width should not be less than 40 mil. The trace width of GATELS should not be less than 40 mil and it should be clsoe to the gate pins of Q3 and Q4. IPD06N03LA IPD09N03LA 330uF/16V 22uF/16V |
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