This document describes a 16 V - 280 mA power supply set in non-isolated flyback topology with the VIPer16LN, a new offline high-voltage converter by STMicroelectronics.
The features of the device include an 800 V avalanche rugged power section, PWM operation at 60 kHz with frequency jittering for lower EMI, current limiting with adjustable setpoint, on-board soft-start, and safe auto-restart after a fault condition.
Moreover, the VIPer16LN can work with or without the auxiliary winding. Operating with the auxiliary winding, it can attain very low standby consumption. Operating without the auxiliary winding, the IC is supplied by an internal current generator, thus saving the cost of the transformer’s auxiliary winding. Both possibilities are discussed in this application note.
The protections available include a thermal shutdown with hysteresis, delayed overload protection, and open-loop failure protection (available only if the auxiliary winding is used).
| Manufacturer | STMicroelectronics |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | AC/DC SMPS - Single Output |
| Eval Board Part Number | 497-8838-ND |
| Eval Board Supplier | STMicroelectronics |
| Eval Board |
Board not Stocked
|
| AC Voltage |
115 V
230 V Universal (115 / 230V) |
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out |
16 V
|
| Current Out |
250 mA
|
| Output Power |
4 W
|
| Features |
Current Limit (Adj. or Fixed)
Frequency Jitter for EMI Short Circuit Protection Soft Start Thermal Protection |
| Efficiency @ Conditions |
>80%, 115V in, 16V @ 25 ~ 100% Load (w/o Self-Supply)
>76%, 115V in, 16V @ 50 ~ 100% Load (w/ Self-Supply) >74%, 230V in, 16V @ 25 ~ 100% Load (w/o Self-Supply) >70%, 230V in, 16V @ 50 ~ 100% Load (w/ Self-Supply) |
| No-load Input Power @ Voltage |
22 mW @ 115 V (w/o Self Supply)
29 mW @ 230 V (w/o Self Supply) 110 mW @ 115 V (w/ Self Supply) 224 mW @ 230 V (w/ Self Supply) |
| Switching Frequency |
60 kHz
|
| Internal Switch |
Yes
|
| Component Count + Extras |
27 + 3
|
| Voltage In |
90 ~ 265 VAC
|
| Design Author |
STMicroelectronics
|
| Application / Target Market |
Battery Chargers
Power: Auxiliary Power Supply Set-Top Boxes |
| Main I.C. Base Part |
VIPer16LN
|
| Date Created By Author | 2011-08 |
| Date Added To Library | 2012-04 |
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