MEAN WELL HLG-320H Power Supply Remaining Component Identification

As previously covered in the actual teardown, this HLG-320H was definitely dead. Now that I've slacked off long enough after taking these pictures, let's see what else is inside.

The IP65 rating for this model comes from the current limit and voltage set trimpots being accessible through these little capped tubes that open to the upper cover.

The PCB information in the above image has the following silk screen snippets: "HLG-320HA-R10", "PCB:HLG-320HB", and the date "2014/06/10".

Secondary side synchronous rectification is provided by two TO-220 FETS

Device: Advanced Power Electronics Corp AP9963GP.

Back on the primary side, the input bridge rectifier in front of the various common-mode chokes.

Device: Shindengen US10KB80R (repeatedly archived, eventually to Mouser).

The PFC boost rectification diode or something just behind the inrush bypass relay.

Device: NXP (now WeEn Semiconductor) BYT79X-600. I guess NXP's 2015 acquisitions required that it spin off WeEn for power electronic components similar to Nexperia for logic devices.

Major electrolytic caps: primary side bulk desoldered and an array of secondary side output bypass. Also a differential mode choke on the positive rail

Devices: Nippon Chemi-Con 450 V, 220 uF, 3k hours at 105°C and Rubycon 16 V, 1800/2200 uF, 105°C.

A better look at the NTC inrush limiter bypass relay next to the boost inductor and hole where the 450 V cap went.

Device: TE PCH-112D2 (5 A, 12 V coil, wash-tight).

Just ahead of the input filtering is a 6.3A fuse.

Round out the survey with the two optocouplers for feedback.

Device: LITE-ON LTV-817.

So that rounds out this destructive analysis of the dead electronics. So much for writing in a timely fashion, but there it was!

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