Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

How to analyze this switched battery charger?

Status
Not open for further replies.

Basil

Member level 5
Joined
Jan 14, 2003
Messages
93
Helped
2
Reputation
4
Reaction score
0
Trophy points
1,286
Activity points
894
**broken link removed**
**broken link removed**

Feedback loop switch on/off W1 to keep VLOAD = Vref±δV. It switchs off W1 and inject current when VBatt goes down. When Battery is charged W1 is switched on and no current flows into VLOAD

X1 adds hysteresis
X3 and V1 models real world battery.
X2 is a linear (a/1+s*τ)

Circuit is unstable. I need to know how to analyze such topology. VBatt and C1 Parasit elements matter regarding stability.
Adding a lead in X2 improves stability (present circuit only has lags, too much lag of course) but I need the math o show how the intuitive works, trade-off, limitations etc.

I don't now the name of this kind of regulator, to know it would allow search in the web.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top