SIC417CD-T1-E3 Vishay, SIC417CD-T1-E3 Datasheet
SIC417CD-T1-E3
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SIC417CD-T1-E3 Summary of contents
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... Integrated Buck Regulator with Programmable LDO DESCRIPTION The Vishay Siliconix SiC417 is an advanced stand-alone synchronous buck regulator featuring integrated power MOSFETs, bootstrap diode, and a programmable LDO in a space-saving MLPQ pin package. The SiC417 is capable of operating with all ceramic solutions and switching frequencies MHz ...
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... Float pin for forced continuous and pull high for power-save mode On-time set input. Set the on-time by a series resistor to the input supply voltage ENL Enable input for the LDO. Connect ENL to A ORDERING INFORMATION Part Number SiC417CD-T1-E3 SiC417DB www.vishay.com 2 FB PAD 1 FBL A 34 GND ...
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... ENL °C, unless otherwise noted A Symbol AG-PG Symbol Min. V 3.0 IN V5V 4.5 V 0.5 OUT Symbol Min STG Vishay Siliconix PAD BST 28, PAD 3 V5V P GND 15-22 I LIM 27 Min. Max 0.3 + 6.0 - 0.3 + 0.3 - 0.3 + (V5V + 0.3) - 0.3 + (V5V - 1. ...
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... SiC417 Vishay Siliconix THERMAL RESISTANCE RATINGS Thermal Resistance, Junction-to-Ambient High-Side MOSFET Low-Side MOSFET PWM Controller and LDO Thermal Resistance Peak IR Reflow Temperature Notes: a. This device is ESD sensitive. Use of standard ESD handling precautions is required. b. Calculated from package in still air, mounted 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards. ...
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... OUT From VLDO I = 100 mA VLDO to ENL The ENL voltage is compared to an internal reference. IN GND LDO 100 (A) OUT Efficiency vs. Output Current (V Vishay Siliconix = + 25 °C for typ., A Min. Typ. Max GND - 150 GND GND 0.735 0.75 0.765 = 135 200 IN - 140 + 140 - 450 + 450 VLDO 1 ...
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... SiC417 Vishay Siliconix ELECTRICAL CHARACTERISTICS 300 250 200 150 100 (A) OUT Frequency vs OUT OUT Start up Time 1 OUT Transient Response dI/dt = 0.5 A/µs OUT www.vishay.com 6 1.35 1.3 1.25 1 OUT Transient Response 1.2 V, OUT (A) OUT Load Regulation 1.2 V) OUT P Delay after Start up Time: ...
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... V ; • Predictable frequency spread because of constant on-time OUT IN architecture. • Fast transient response enables operation with minimum output capacitance for the present V Overall, superior performance compared to fixed frequency IN architectures. SiC417 Vishay Siliconix Ultra-Sonic Power-Save OUT threshold V LX ...
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... SiC417 Vishay Siliconix On-Time One-Shot Generator (t Frequency The SiC417 have an internal on-time one-shot generator which is a comparator that has two inputs. The FB Comparator output goes high when VFB is less than the internal 500 mV reference. This feeds into the gate drive and turns on the high-side MOSFET, and also starts the one-shot timer ...
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... This method prevents a hard OVP shutdown and also cycles energy from V power by avoiding forced conduction mode operation. Figure 7 shows typical waveforms for the smart power-save feature. FB SiC417 Vishay Siliconix to slowly rise OUT through the inductor and causes V OUT drops back to the 500 mV trip point, a normal FB back to V ...
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... SiC417 Vishay Siliconix V drifts up to due to leakage OUT current flowing into C OUT Smart power save threshold (550 mV) FB threshold DH and DL off High-side drive (DH) Single DH on-time pulse after DL turn-off Low-side drive (DL) DL turns on when smart PSAVE threshold is reached DL turns off FB threshold is reached ...
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... V ~ 200 mA current limit case where V programmed to 1.8 V. After start-up, the device would connect V OUT voltages are within the ± 300 mV switch-over window. SiC417 Vishay Siliconix pin using an internal switch. When the OUT LDO OUT pins are then compared; if the two ...
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... SiC417 Vishay Siliconix To avoid unwanted switch-over, the minimum difference between the voltages for V and V OUT ± 500 mV not recommended to use the switch-over feature for an output voltage less than 3 V since this does not provide sufficient voltage for the gate-source drive to the internal p-channel switch-over MOSFET ...
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... A load release, the required capacitance is shown by the next equation. INMAX µH If the load release is relatively slow, the output capacitance can be reduced. At heavy loads during normal switching, when the FB pin is above the 500 mV reference, the DL SiC417 Vishay Siliconix conditions is also checked using the TON OUT T ...
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... SiC417 Vishay Siliconix output is high and the low-side MOSFET is on. During this time, the voltage across the inductor is approximately - V This causes a down-slope or falling di/dt in the inductor. If the load dI/dt is not much faster than the - dI/dt in the inductor, then the inductor current will tend to track the falling load current ...
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... V The on-time is essentially constant for a given V combination, to off set the losses the off-time will tend to reduce slightly as load increases. The net effect is that switching frequency increases slightly with increasing load. SiC417 Vishay Siliconix as losses increase OUT IN www ...
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... SiC417 Vishay Siliconix SiC417 EVALUATION BOARD SCHEMATIC 5 5 www.vishay.com BST AGND 3 30 OUT V AGND 5 4 AGND 35 PGND 15 DL PGND 14 16 PGND 22 DH PGND 12 21 PGND 20 EN/PSV PGND 29 19 PGND 18 ENL PGND Figure 15. Evaluation Board Schematic Document Number: 69062 S10-1367-Rev. D, 14-Jun-10 ...
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... SM/C_0603 SM/C_0603 SM/C_0603 SM/C_0603 SM/C_0402 SM/C_0805 QFN5X5_32 leads + 3 pads 30 V SO-8 200 V C_2512 50 V SM/C_0603 50 V SM/C_0603 16 V SM/C_1210 SiC417 Vishay Siliconix Part Number Manufacturer 575-4 Keystone GRM32ER71C226ME18L Murata C0402C104K8RAC7867 Vishay C0402C104K8RAC7867 Vishay VJ0603Y104KXACW1BC Vishay TMK325B7106MN-T Taiyo Yuden EEU-FM1V151 Panasonic VJ0402Y103KXACW1BC ...
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... SiC417 Vishay Siliconix PCB LAYOUT OF THE EVALUATION BOARD Figure 16. PCB Layout - Top Layer Figure 18. PCB Layout - MidLayer2 www.vishay.com 18 Figure 17. PCB Layout - MidLayer1 Figure 19. PCB Layout - Bottom Layer Document Number: 69062 S10-1367-Rev. D, 14-Jun-10 ...
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... PACKAGE DIMENSIONS AND MARKING INFO Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability data, see www.vishay.com/ppg?69062. ...
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... Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications their own risk and agree to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay or its distributor was negligent regarding the design or manufacture of the part ...