Mediatek Pump Express Introduction

1 Mediatek Pump Express Introduction 2016. Outline Pump Express Evolution PE+ / PE+ Q&A. Pump Express Plus Evolution 3. Pump Express Evolution 2014 2015 2016 2017. Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2. Charge Current 3~6V, CC/CV. 5/7/9/12V 5~20V, o 5A+ Direct Charge o = 95%+. o Bidirectional Type-C VDM Communication o 3A Single charger o 20+ Protection Schemes o 3A Single Charge o Master/Slave charger o Master/Slave Charge o = 92%. 75% in 20min o = 90%. o Unidirectional Vbus Communication o Unidirectional Vbus communication 75% in 30min 75% in 35min Efficiency Note1 : The adaptor of is capable of outputting CC (Constant Current) & CV (Constant Voltage) with fine resolution. Note2 : PE+ & will co-exist in the market. PE+ for micro-B/type-C connector & lower cost for type-C connector & higher charge current Communication Protocols Mediatek PE+ PE+ PE+ (Direct Charge). MP Schedule Now Now Q3'16.

2 5V~12V 5V~20V 3V~6V. TA Output (Fixed 5/7/9/12V) ( per step) (10-20mV per step). Communication VBUS current modulation VBUS current modulation USB PD. Charge Current Single 3A/Parallel Single 3A/Parallel + Direct Charge 5A+. Efficiency 90% 92% 95%+. Competitor's N/A. Counter Tech PE+ / PE+ 6. PE+ Improvements Item Feature Description 1 Faster communication Reduce TA identification time from to 2 Fine-grain voltage levels Adjust adaptor voltage dynamically to -5V-to-20V (step = ) optimize charging efficiency is good enough 3 Cable Impedance Measurement Calculate cable impedance and manage (Safety & Eff. Opt.) charging behavior accordingly -7- State Machine Grade 1 TA: 5V~12V. Grade 2 TA: 5V~20V. 6V 5V WDT*0 time out WDT time out 20V 19V. *0 Watch Dog Timer Fig 2. State machine of PE+. Change voltage one step sequentially by current pattern. Change voltage directly by current pattern. Returned when WDT expired.

3 Fig 1. State machine of PE+ with per step. -8- P34. Current Pattern PE+. -9- Current Pattern PE+ 50ms 100ms 50ms 100ms 100ms 50ms 50ms 100ms 50ms 100ms 150ms 240ms Frame (G) (D) (G) (D) (F) (H) (G) (D) (G) (D) (E) WDT. bit4 bit3 bit2 bit1 bit0. [4:0]=00100b Define the Logic 0 and Logic 1 for bit4~bit0. 50ms 100ms 100ms 50ms Logic 0 (G) (D) Logic 1 (F) (H). (G) (D) (G) (D) (G) (D) (G) (D) (G) (D) (E) WDT Change VBUS to . (F) (H) (F) (H) (F) (H) (G) (D) (F) (H) (E) WDT Change VBUS to 20V. (F) (H) (F) (H) (F) (H) (F) (H) (G) (D) (E) DET Adaptor healthy self-testing (F) (H) (F) (H) (F) (H) (F) (H) (F) (H) (E) DET Disable cable drop compensation -10- Current Pattern PE+ Lookup Table Digital Code Absolute Unit Feature bit5~bit0 [4:0] Voltage 00000B V. 00001B 6 V Change Output Voltage 00010B V. 00011B 7 V. 00100B V. 00101B 8 V. 00110B V. 00111B 9 V. 01000B V. 01001B 10 V. 01010B V. 01011B 11 V.

4 01100B V. 01101B 12 V. 01110B V. 01111B 13 V. 10000B V. 10001B 14 V. 10010B V. 10011B 15 V. 10100B V. 10101B 16 V. 10110B V. 10111B 17 V. 11000B V. 11001B 18 V. 11010B V. 11011B 19 V. 11100B V. 11101B 20 V. 11110B N/A N/A Adaptor Healthy Self-Testing 11111B N/A N/A Disable Cable Drop Compensation -11- Table 2. The look-up table of current patterns. PE+ vs. PE+ Remark RT9466 (bq25892/6 p2p) Q: single source charger IC RT9467 (bq25890 p2p). SMB1351. MTK : multi source Efficiency ~89% 85-86%. Do cable imp. Calculation. Safety Protect cable from burnout N/A Patent pending Co-develop with Mitsumi Speed 27% faster - (introduce in page 16). charger IC Efficiency Measurement Low RON Poor RON. Competitor 3rd Party 3rd Party 3rd Party RT9466: better efficiency Mass Production! RT9466. Cable : Impedance/Safety Detection MTK. PE+ Adjust Vbus according to cable impedance/quality Algorithm Adaptor Phone Set desired charge current Type-C 3A Cable 5V/3A.

5 Increase Vbus until meet the charge current. However, there is no way to USB Cable know cable impedance/quality. 5V/3A. Copyright Mediatek Inc. All rights reserved. -14- Cable Impedance Measurement VBUS Cable R ( ). = (V_phone_a V_phone_b) / V_adaptor_a V_adaptor_b V_phone_a V_phone_b [Cable Impedance Measurement]. (Assume TA compensation = IBUS. Ia Ib 450mA 900mA. TA Cable Compensation Disabled Cable R = . TA Cable Compensation Enabled Cable R = . -15- Accurate Charge Path Impedance Compensation, extending CC period Accurate cell voltage can be Over-estimated measured inside the pack cell voltage MW3757. MW3793. CC Extension MW3757: Protection + Monitor MW3793: Monitor (Exclusive for Mediatek ). Copyright Mediatek Inc. All rights reserved. -16- PE+ AC/DC & charger IC Vendors iWatt (Dialog). iW1782 (primary side) + iW673 (synchronous rectifier, option for better efficiency). On-bright (OB).)

6 OB2632+OB2607. (Aohai)/ / (Kosun). Fairchild FAN602 (primary side) + FAN6290M (secondary side). Salcomp/ (Chenyang Electron). Pump Express 18. PE Advantage Power Dissipation -60%. Standardized Eco-system The power dissipation can be reduced significantly by using direct charge (without loss caused by switching charger ). Type-C/PD cable, connector. Share the same eco-system among PC/NB/monitor/phone Design for Safety 5A+ Charging Bi-directional communication between TA and phone Over 20 protection mechanisms 75% in 20 min. Utilize Step Charge and/or high-C-rate battery PE System Concept USB PD VDM communication / Type-C 5A Cable (3 6V). VBUS Direct Charge Path Conventional Charge Path Type-C Connector D+/D- VSYS. 25W : 43mm x 43mm x 25mm (will be smaller for MP product) VBAT. AP. battery Switching charger I2C. CC1/CC2 Type- C/PD. PE Phone Impedance Control Cable/Connector Phone 5A. TA R_CON1 ICHG R_CABLE ICHG R_CON2.

7 RPCB. R_SW. From ICHG. VBUS. 20m 16m . ICHG. AWG22//. ICHG. 5m R_C Battery AWG28. 100cm ICHG. Battery 4m . Totally Totally Protector 7 contacts 7 contacts R_Pcb_bat 5m . R_FG. VBUS, (1 AWG22, )//(3 AWG28, ). R_p GND, (1 AWG22, )//(3 AWG28, ). 5m . O Impedance (R) minimization is critical for power dissipation R_b (Pd) reduction because Pd is in proportion to I2R. Cell 30m . O A high-C-rate cell (usually ) with low DCR is a must.. However, you have to tradeoff C-rate and cell energy density. Design for Safety Bi-direction communication BIF. PD adaptor charger AP. Battery Cable/ Battery BIF Battery Subject TA charger Connector with AP Protector Identification OVP. OCP. Thermal Over 20 Protection Mechanisms Watchdog Timer Impedance detect PE AC/DC Vendor Richtek RT7786 (Primary) + RT7207 (Secondary). Power Makers TA Vendors Contact Person Phone Mobile Email Salcomp Lenny Lin 0920 363 552 (TW) (886)972-637-968.

8 Phihong Technology Co., Ltd. Elaina Chen (886)-3-3277288 (CN) (86)13910483959. SOLUM Co. Ltd. Eric Wang (86) 10 8478 5696 (86) 152 0140 8181 (886) 3-3759-888 #. FSP Stacy (TW) (886)960034264 1225. Aohai . Huntkey . 23. Connector/Cable Vendor Info. (Sunyking Technology Co. Ltd). Cable: SK-USB31CC001. Connector: SK-CONNCF01. Connector/Cable Vendors Contact Person Phone Email Taiwan: +886_919_283_235. (Joe Lai) Ji-Haw Industrial Co., Ltd China: +86_186_824_270_15. 24. PE Target Connector : Type-C@phone Cable : A-2-C or C-2-C. Communication : USB PD (VDM). Create a Low-voltage fast charge standard based on USB PD. Share same supply chain with PC/Monitor/NB/Tablet. Copyright Mediatek Inc. All rights -25- reserved. Q&A. 26. FAQ (1/3). Q: What is A: It's charge technology routing charge current directly from Adaptor to Battery. Q: What is the advantage of A: Much better charge efficiency (95%+), making high charge current possible.

9 (Traditional high-voltage fast charge technology ~ 90%). Q: What is the required HW of (1) 3-6V/5A+ Adaptor with USB PD VDM capability (2) Smartphone with Type_C connector and USB PD VDM capability (3) 5A cable (4) A Battery with high Charge-Rate (C-rate). Example #1 : 5A charge current / 2500mAh battery = 2C (emerging). Example #2 : 5A charge current / 3333mAh battery = (commercial available). (5) Low-impedance design, including connector, cable, switch for charge, PCB, battery. 27. FAQ (2/3). Q: How much does it cost? (1) In the long run, type-C is the standard. So, assuming you already have type-C 3A cable, you just need to upgrade to 5A cable. (2) And, you must pay for adaptor with higher power ( 15W 25W) & USB PD capability (3) Phone: no cost up Q: When is the mass production schedule of A: Ready for mass production Q: What is the target platform of Mediatek X-series and P-series.

10 For middle-end, it's by request. Q: Is safe? Over 20 protection mechanisms are designed for ensuring safety of 28. FAQ (3/3). Q: Can support communication via D+/D-? A: No, only USB PD. 29.