TS3404_1 TSC [Taiwan Semiconductor Company, Ltd], TS3404_1 Datasheet
![no-image](/images/no-image-200.jpg)
TS3404_1
Related parts for TS3404_1
TS3404_1 Summary of contents
Page 1
Single Synchronous Buck PWM Controller Pin assignment 1. Boot 2. Ugate 3. Gnd 4. Lgate General Description The TS3405 makes simple work out of implementing a complete control and protection scheme for a DC-DC step-down converter. Designed to drive N-channel ...
Page 2
Pin Descriptions No. Pin. This pin provides ground referenced bias voltage to the upper MOSFET driver Boot bootstrap circuit is used to create a voltage suitable to drive a logic-lever N-channel MOSFET. It can take 20V as the ...
Page 3
Electrical Characteristics Parameter Vcc supply current Nominal supply Power-on reset Rising Vcc power-on reset threshold Vcc power-on reset threshold Hysteresis Oscillator Frequency Ramp amplitude Reference Reference voltage Tolerance Nominal reference voltage Error Amplifier DC Gain Gain-bandwidth product Slew rate Gate ...
Page 4
Typical Application (continued) U1 CDCPL COMP Roffset Single Power 5V and 12V Application U1 CDCPL COMP Roffset Adjustable OCP Point Application TS3405 Vcc_5V Vcc_12V Rfilter Dboot Cboot Boot Vgate TS3405 Phase Lgate RS Vin ...
Page 5
Typical Application (continued) H3 Vin_Gun Roset 20K_5% C4 105 R2 JP1 43K_1 821 Jumper C2 222 R4 1.5K_1% Component Reference design MOSFET Inductor No. of input capacitor C13、C14 No. of output capacitor C8、C9、C10 No. of decoupling C5A、C5B ...
Page 6
Functional Description Start Up The TS3405 automatically initializes upon receipt of power. The Power-On Reset (POR) function continually monitors the bias voltage at the Vcc pin. The POR function initiates the Soft Start (SS) operation after the supply voltage exceeds ...
Page 7
Application Guidelines Component Selection Input Capacitor Use a mix of input bypass capacitors to control the voltage overshoot across the MOSFETs. Use small ceramic capacitors for high frequency decoupling and bulk capacitors to supply the current needed each time Q1 ...
Page 8
Application Guidelines (continued) Output Inductor The output inductor is selected to meet the output voltage ripple requirements and minimize the converter’s response time to the load transient. The inductor value determines the converter’s ripple current and the ripple voltage is ...
Page 9
Application Guidelines (continued) The equations below relate the compensation network’s poles, zeros and gain to the components (R C and Fig. 7. Use these guidelines for locating the 2 3 poles and zeros of the compensation network: ...
Page 10
TS3405 SOP-8 Mechanical Drawing MILLIMETERS DIM MIN A 4.80 B 3.80 C 1.35 D 0.35 F 0.40 G 1.27 (typ 5.80 ...