HX5929H  is  a  high  performance, highly  integrated 
DCM (Discontinuous Conduction Mode) Primary Side 
Regulation  (PSR)  power  switch  for  offline  small 
power converter applications.
HX5929H uses  Pulse  Frequency Modulation (PFM) 
control to improve efficiency and eases system EMI 
design. The IC  dramatically lowers system cost by 
eliminating  the  opto-coupler  and  secondary control 
circuits. It also can provide very tight output voltage 
regulation (CV), in addition to output current control
(CC) ideal for charging applications.
HX5929H has  built-in  proprietary  NC-Cap/PSR
TM
control  for  CV  control,  which  eliminates external 
compensation or  filtering  capacitor.  It  has  built-in 
cable drop compensation function, which can provide 
excellent CV performance. The IC also has built-in 
soft  start  function  to  soften  the  stress  on  the 
MOSFET during power on period. Under light load 
conditions, the IC decreases switching frequency to 
achieve excellent regulation and high efficiency, yet 
meets the requirement for no-load consumption less 
than 30mW.
HX5929H  integrates  functions  and  protections  of
Under Voltage Lockout (UVLO), VDD Over Voltage 
Protection  (VDD  OVP),  Output  Over  Voltage 
Protection (Output  OVP),  Soft Start,  Cycle-by-cycle 
Current Limiting (OCP), All Pins Floating Protection, 
VDD Clamping.

HX5929H is available in DIP7 package.