Fully Digital-controlled Power Supply Control IC with
Bridgeless PFC and LLC Current-resonant Circuits
MD6752
Data Sheet
Description
Package
The MD6752 is a fully digital-controlled power
supply IC, which incorporates a bridgeless PFC control
circuit and an LLC current-resonant circuit. The PFC
circuit, driven by continuous conduction mode (CCM),
is controlled with frequencies suitable for applied input
voltages and loads. The IC incorporates current mode
for controlling constant voltages in the LLC stage and a
floating drive circuit that drives an external high-side
power MOSFET, in addition to functionally-rich
protections. These digitally controlled strategies allow
application-specific optimal settings. Compared to
conventional analog control circuits, the IC can achieve
more cost-effective, high-efficient, yet low-noise power
systems with fewer external components.
SOP28
Not to scale
Features
Applications
● Fully Digital-controlled PFC and LLC Current-
resonant Circuits
● Soft Start
For devices requiring high power supplies such as:
● Audiovisual Equipment
● Office Automation Equipment (e.g., Server,
Multifunction Printer)
● Industrial Equipment
● Communication Equipment
● Bridgeless PFC Circuit
● Continuous Conduction Mode (CCM) PFC Control
● Current Mode LLC Control
● Protections Include:
- AC Power Supply Input Undervoltage Lockout
- AC Power Supply Input Off-state Detection
- PFC Output Undervoltage Protection (PFC_UVP)
- PFC Output Overvoltage Protection (PFC_OVP)
- PFC Overcurrent Protection (PFC_OCP)
- PFC Overload Protection (PFC_OLP)
- LLC High-side Driver Undervoltage Lockout
(VB_UVLO)
Typical Application
VAC
Sense
Sense
PFC
gate
PFC
gate
- LLC Overcurrent Protection (LLC_OCP)
- LLC Overload Protection (LLC_OLP)
- VCC Pin Overvoltage Protection (VCC_OVP)
- Thermal Shutdown (TSD)
External power supply
NC
VGH
VS
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Sense
2
VB
A2
PGND
VGP
3
VOUT+
PFC
gate
4
U1
A0
5
VCC
VGL
SCID
6
BASE
GND
AVCC
DVCC
VREF
CS
Debug
7
GPIO04
VOCM
GPIO01
GPIO03
GPIO02
VCORE
8
9
10
11
12
13
14
VSEN
FB
CM
VOUT-
MD6752-DSE Rev.1.1
Nov. 15, 2021
SANKEN ELECTRIC CO., LTD.
https://www.sanken-ele.co.jp/en
1
© SANKEN ELECTRIC CO., LTD. 2021