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TPS65552ADGQ Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS65552ADGQ Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 14 page RGT DGQ www.ti.com FEATURES APPLICATIONS DESCRIPTION T1 PGND SW VBAT F_ON G_IGBT CHG I_PEAK NC D Q F1 D Q F2 XFULL or or or V5 V VCC VA D1 C1 VOUT VVF R1 30 m Ω U0 VCC LOGIC Max ON ENA Internal ENA 0 V DS U1 V_FULL U2 U3 I_PEAK1 I_PEAK2 TSD Analog Circuit D/A Vonv. Controller VVF 1:10 or 1:11 or 1:12 U4 VCC 5[V] drive IGBT SW1 TPS65552A SLVS567 – JULY 2005 INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER • Digital Still Cameras (DSC) • Highly Integrated Solution to Reduce Components • Optical Film Cameras • Mobile Phones With Camera • Integrated 50-V Power Switch, R(ON) = 200 mΩ Typical • PDAs With Camera • Integrated IGBT Driver • High Efficiency This device offers a complete solution for charging a • Programmable Peak Current, 0.95 A ~ 1.8 A photo flash capacitor from battery input, and sub- • Input Voltage of 1.8 V to 12 V sequently discharging the capacitor to the xenon • Optimized Control Loop for Fast Charge Time tube. The device has an integrated power switch, IGBT driver, and control logic blocks for charge • Sensing All Trigger From Primary Side applications. Compared with discreet solutions, the • 10-Pin MSOP/16-Pin QFN Package device significantly reduces the component count, • Protection shrinks the solution size, and eases design com- – MAX On Time plexity. Additional advantages are fast charging time and high efficiency due to the optimized PWM control – Over VDS Shutdown algorithm. – Thermal Monitor Other provisions of the device includes four options for determining a different target voltage, programmable peak current, thermal disable monitor, input signal for charge enable, flash enable, and an output signal for charge completion status. Figure 1. Typical Application Circuit Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. PRODUCT PREVIEW information concerns products in the forma- Copyright © 2005, Texas Instruments Incorporated tive or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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