TSM108I STMicroelectronics, TSM108I Datasheet
TSM108I
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TSM108I Summary of contents
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... DC/DC step down regulation. November 2001 AUTOMOTIVE SWITCH MODE VOLTAGE AND CURRENT CONTROLLER APPLICATION DIAGRAM ORDER CODE Part Number TSM108I D = Small Outline Package (SO) - also available in Tape & Reel (DT) PIN CONNECTIONS (top view) VCC in the !STBY GND OSC ...
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TSM108 PIN DESCRIPTION Name Pin VCC 1 Power Supply GND 3 Power Ground GD 14 Gate Drive VREF ICTRL 12 VCTRL 11 VCOMP 8 ICOMP 9 OSC 7 !STBY ABSOLUTE ...
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ELECTRICAL CHARACTERISTICS T = 25° 12V (unless otherwise specified) amb CC Symbol Parameter CURRENT CONSUMPTION I Current Consumption CC STANDBY I Current Consumption in Standby Mode stby V Input Standby Voltage High Impedance sh V Input Standby Voltage ...
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TSM108 DETAILED INTERNAL SCHEMATIC 15V VCC 1 Protection block !STBY 2 VCC Ruvu 184k UV 4 Ruvl 76,5k VREF VCC Rovu 275k OV 5 Rovl 23,2k TSM108 4/ maximum duty cycle = 95% Oscillator block OSC GND 7 ...
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OSCILLATOR FREQUENCY VERSUS TIMING CAPACITOR 350 300 250 200 150 100 TSM108 AS A STAND ALONE DC/DC CONVERTER FOR CIGARETTE LIGHTER ACCESSORIES Csupply 1 Vcc Gnd !Stby UV OV Cosc 100 Oscilla tor fre ...
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PRINCIPLE OF OPERATION AND APPLICATION HINTS Description of a DC/DC step down battery charging application 1. Voltage and Current Controller TSM108 is designed to drive a P-Channel MOSFET transistor in Switch Mode Step Down Converter applications. Its operational amplifiers ensure ...
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An external capacitor connected between ground and the Osc pin of TSM108 to set the switching frequency. The maximum duty cycle of the PWM ...
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TSM108 6.4. OVLO increase: If the OVLO level needs to be increased (OV2), an additional resistor (Rovl2) must be connected between OV and Gnd following the equation Vref (Rovh/Rovl +1) OV2 = Vref (Rovh/(Rovl//Rovl2) +1) where Rovl//Rovl2 means ...
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This component value is valid if the above described characteristics are fixed... but in the automotive field, the input voltage of the converter is dependant of the car battery conditions. Also, the frequency may vary depending on the temperature, due ...
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TSM108 Vin = Vcc = 12V, Iout = 625mA, Vout = 6V Mosfet: Pchannel Mosfet: Rdson = 100m , Ciss = 1nF. Driver: TSM108 PWM frequency: 100kHz Free wheel diode 0.7V Shunt: Rsense = 330m The efficiency ( ...
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Measured Performances The few following curves show the measured performances of TSM108 used in DC/DC step 12.1. Voltage and Current Control, Efficiency Performances using a Pchannel MOSFET: CV & CC Regulation - Switching duty cycle vs Iout Vin = ...
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TSM108 12.2. Voltage and Current Control, Efficiency Performances using a PNP bipolar transistor Vout & duty cycle versus Iout Vin=12V, Vout=6V, Iout=200mA 0.05 Efficiency & duty cycle versus Iout Vin=12V, Vout=6V, ...
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... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © ...