Kiwi Instruments KP201
KP201 is a high performance current mode PWM controller for offline flyback converter applications. The IC has built-in General Primary Side CC control, which simplifies isolated power supply design that requires CC regulation of the output. The IC has built-in green and burst mode control for light and no load condition, which can achieve less than 75mW standby power.FEATURES
● Primary Side Constant-Current (CC) Control for DCM and CCM Operation● ±5% CC Regulation; ±1% CV Regulation
● Less than 75mW Standby Power
● Fixed 65kHz Switching Frequency
● Green Mode and Burst Mode Control
● Very Low Startup and Operation Current
● Built-in Frequency Shuffling to Reduce EMI
● Built-in Current Mode Control with Internal Slope Compensation
● Built-in Line & Inductance Compensation for CC Operation
● Built-in Protections with Auto Recovery:
● VDD Under Voltage Lockout (UVLO)
● VDD Over Voltage Protection (OVP)
● On-Chip Thermal Shutdown (OTP)
● Cycle-by-Cycle Current Limiting
● Over Load Protection (OLP)
● Short Circuit Protection (SCP)
● Leading Edge Blanking (LEB)
● CS Pin Float Protection
● Available with SOT23-6L Package
APPLICATIONS
● Chargers and Adapter● Motor Driver Power Supply TYPICAL APPLICATION CIRCUIT Output CC&CV Application L EMI Filter + N + DC/CC OUT + KP201 1 GND GATE 6 2 FB 3 SEL VDD 5 CS 4 TL431
GENERAL DESCRIPTION
In KP201, PWM switching frequency with shuffling is fixed to 65 kHz and is trimmed to tight range.