onsemi NCP1680, User Manual

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EVAL BOARD USER’S MANUAL
www.onsemi.com
© Semiconductor Components Industries, LLC, 2022
February, 2022 − Rev. 0
1 Publication Order Number:
EVBUM2822/D
NCP1680 - Totem Pole CrM Controller Evaluation
Board User's Manual
EVBUM2822/D
Introduction
The NCP1680 is a Critical Conduction Mode (CrM)
Power Factor Correction (PFC) controller IC designed to
drive the bridgeless Totem Pole PFC (TPFC) topology. The
bridgeless totem pole PFC consists of two totem pole legs:
a fast switching leg driven at the PWM switching frequency
and a second leg that operates at the AC line frequency. This
topology eliminates the diode bridge present at the input of
a conventional PFC circuit, allowing significant
improvement in efficiency and power density.
Figure 1. NCP1680 Evaluation Board
The NCP1680 Evaluation Board (EVB) user guide
demonstrates a universal line, 300 W totem pole PFC built
using NCP1680. NCP1680 is intended for Industrial power
supplies, Telecom/5G/Networking power, USB PD,
Gaming consoles, UHD TV power supplies, and Lighting
applications. TPFC topology eliminates the need for
heatsinks or forced air in the NCP1680 EVB while operating
at an ambient of 25
°
C.
Table 1. KEY SPECIFICATIONS
Description Value Unit
Input Voltage Range 90 − 265 Vac
Line Frequency Range 47 − 63 Hz
Output Voltage 395 V
Output Power 300 W
Output Ripple < 5 %
PF @ Full Load > 0.95
THD @ Full Load < 10 %
Inductor Value 150 m H
Inductor Core Size/Geometry PQ3220
Bulk Capacitor Value 200 m F
Maximum Frequency 130 kHz
NOTE: NCP1680 EVB is a high voltage demonstration
board. It can accept an input voltage of 90 Vac to
265 Vac and the output voltage of the board is
395 Vdc nominally. This EVB is for
demonstration purposes only and should not be
used to power any loads other than an electronic
load. Only trained professionals in using high
voltage equipment should handle the board and
appropriate safety precautions should be
followed.