High-Performance PWM Controller
T echcode®
High-Performance PWM Controller
DATASHEET
TD1730
General Description
Features
The TD1730 ...
Description
T echcode®
High-Performance PWM Controller
DATASHEET
TD1730
General Description
Features
The TD1730 is a single‐phase, constant‐on‐time, z
synchronous PWM controller, which drives N‐channel z
MOSFETs. The TD1730 steps down high voltage to z
generate low‐voltage chipset or RAM supplies in notebook z
computers.
The TD1730 provides excellent transient response and z
accurate DC voltage output in either PFM or PWM Mode. In z
Pulse Frequency Mode (PFM), the TD1730 provides very high z
efficiency over light to heavy loads with loading‐ modulated z
switching frequencies. In PWM Mode, the converter works z
nearly at constant frequency for low‐noise requirements.
z
The TD1730 is equipped with accurate positive current‐ limit, z
output under‐voltage, and output over‐voltage z
protections, perfect for NB applications. The Power‐On‐ z
Reset function monitors the voltage on VCC to prevent z
wrong operation during power‐on. The TD1730 has a 1ms z
digital soft‐start and built‐in an integrated output z
discharge method for soft‐stop. An internal integrated z
soft‐start ramps up the output voltage with programmable z
slew rate to reduce the start‐up current. A soft‐stop function z
actively discharges the output capacitors with controlled z
reverse inductor current.
z
The TD1730 is available in 10pin TDFN 3x3 package.
Adjustable Output Voltage from...
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