The 25W charger that shipped with the Samsung Galaxy S10 5G phone is Samsung's first USB Type-C based charger for its Galaxy series. The Samsung 25W PD 3.0 PPS Type-C Charger supports USB Power Delivery 3.0 based PPS (Programmable Power Supply) and Augmented PDO's for rapid charging over the Type-C interface. The charger offers up to 25 watts output using fixed PDO's (Power Delivery Objects) of 15 watts (5 volts @ 3 amps) and 24.9 watts (9 volts @ 2.77 amps) as well as variable power of 9.9-17.7 watts (3.3~5.9 volts @ 3 amps) and 7.4-24.8 watts (3.3~11 volts @ 2.25 amps) power profiles.
To observe the power capabilities of the Samsung 25W PD 3.0 PPS Type-C Charger, we used the USB Power Test App from Granite River Labs with the Granite River Labs USB Power Delivery Compliance C2 Tester to generate the following test results.
The USB Power Test App first negotiates a power contract for every PDO supported by the Samsung 25W PD 3.0 PPS Type-C Charger, and increases the load gradually to find the threshold where over current protection (OCP) kicks in and voltage and current start to drop for safety reasons.
The USB Power Test App then reports out the fixed PDO's supported by the Samsung charger and their OCP thresholds.
|PDO#1 Fixed: 5V 3A||3.52||117.3%|
|PDO#2 Fixed: 9V 2.77A||3.21||115.9%|
The USB Power Test App from Granite River Labs takes this data to produce an I-V curve which graphically shows the relationship between voltage and current for each PDO. Like other chargers that support PPS (Programmable Power Supply), we can observe current fold-back behavior for the 9V PDO where as the current increases beyond the OCP threshold, the voltage starts to curve down rather than immediately shutting off. The 5V PDO just shows the voltage immediately shuts off when crossing the OCP threshold.
Using the USB Power Delivery Compliance C2 Tester from Granite River Labs to run just a subset of the full USB Power Delivery compliance test suite, a compliance failure was observed for the Samsung 25W PD 3.0 PPS Type-C Charger.
USB-IF High Level Mapping Summary
Test Group Description
BMC Physical Layer Transmitter
BMC Physical Layer Receiver
BMC Physical Layer Miscellaneous
Protocol Specific Primary
Power Source/Sink Primary
TDA.126.96.36.199 BMC PHY TX EYE
TDA.188.8.131.52 BMC PHY TX BIT
TDA.184.108.40.206 BMC PHY RX INT REJ
TDA.220.127.116.11 BMC PHY RX BUSIDL
TDA.18.104.22.168 BMC PHY TERM
TDA.22.214.171.124 BMC PHY MSG
TDA.2.2.1 BMC PROT SEQ GETCAPS
TDA.126.96.36.199 BMC PROT SEQ CHKCAP P PC
TDA.188.8.131.52 BMC PROT SEQ CHKCAP NOMARK P PC
TDA.2.2.7 BMC PROT BIST NOT 5V SRC
TDA.2.2.9 BMC PROT GSC REC
TDA.184.108.40.206 POW SRC LOAD P PC
TDA.220.127.116.11 POW SRC TRANS P PC
BMC Eye Diagram