PWM Controller. RP6100 Datasheet
5V to 12V Single Synchronous Buck PWM Controller
The RP6100 series are single-phase synchronous buck
PWM DC-DC controllers designed to drive two
N-MOSFETs. They provide a highly accurate,
programmable output voltage precisely regulated to low
voltage requirement with an internal 0.8V reference.
The RP6100 series use a single feedback loop voltage
mode PWM control for fast transient response. The high
driving capability makes it suitable for large output current
applications. An oscillator with fixed frequency 200kHz
reduces the component size of the external inductor and
capacitor for saving PCB board area and cost.
The RP6100 series integrate complete protection functions
such as OCP, OVP and OTP UVP into SOP-8 (Exposed
Pad) surface mount package.
SP : SOP-8 (Exposed Pad-Option 1)
Operating Temperature Range
G : Green (Halogen Free with Commer-
Frequency / VREF Options / Soft Start-Time
D : 200k / 0.8V / 4ms
E : 200k / 0.8V / 9ms
Richpower Green products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Single IC Supply Voltage ( 5V to 12V)
Drive Two N-MOSFETs
Fixed Operating Frequency at 200kHz
Voltage Mode PWM Control with External
Feedback Loop Compensation
Over Current Protection by Sensing MOSFET RDS(ON)
Hardware Pin for On/Off Control
Full 0 to 90% Duty Cycle
Fast Transient Response
RoHS Compliant and Halogen Free
Mother Boards and Desktop Servers
Switching Power Supply
Generic DC/DC Power Regulator
SOP-8 (Exposed Pad)
RP6100-04P Jan 2011
Typical Application Circuit
3.3V to 12V
5V or 12V
7 COMP PHASE 8
RF C1 6 FB
Functional Pin Description
Bootstrap Supply Pin for the Upper Gate Driver. Connect the bootstrap
capacitor between BOOT and PHASE pins.
Upper Gate Driver Output. Connect this pin to gate of the high side power
Both Signal and Power Ground for the IC. Tie this pin directly to the
9 (Exposed Pad)
low-side MOSFET source and ground plane with the lowest impedance.
The exposed pad must be soldered to a large PCB and connected to GND
for maximum power dissipation.
Low-Side Gate Drive. It also acts as over current setup pin by adjusting
the resistor connecting to GND.
Connect this Pin to a Well-Decoupled 5V or 12V Bias Supply. It is also the
positive supply for the lower gate driver.
Feedback of the Output Voltage.
Feedback Compensation and Enable/Shutdown Control Pin.
Connect this pin to the source of the upper MOSFET and the drain of the
2 RP6100-04P Jan 2011
Function Block Diagram
INHIBIT Gate Control
RP6100-04P Jan 2011