BD7679G
PWM Control Type DC/DC Converter IC for AC/DC Driver
BD7679G
PWM Control Type DC/DC Converter IC for AC/DC Driver
BD7679G is a PWM controller type DC/DC converter IC for AC/DC that provides an optimum system for all products that requires an electrical outlet. This product supports both isolated and non-isolated devices. IC enables simple design of low-power electrical converters. With switching MOSFET and current detection resistor as external devices, it enables more freedom in design. Since the peak current control is utilized, peak current is controlled in each cycles, application excels wide bandwidth and transient response. BD7679G includes various protective functions such as soft start function, burst function, per-cycle over current limiter, VCC overvoltage protection and overload protection. An external stop pin (COMP pin) is provided, so that switching stopping can be set by external signals. The function is available as overheating protection and over voltage protection of secondary output, so on. The PWM switching frequency is fixed at 65 kHz. A frequency hopping function is included which contributes to low EMI.
You can choose from a variety of power and topology evaluation boards.
For Automotive usage, please contact Sales.
Product Detail
Specifications:
AC Monitor Function
No
BR UVLO
No
Current Detection Resistors
External
Dynamic Over Current Detection
No
External LATCH Function
No
FB OLP
Auto Restart
Frequency Reduction Function
No
Over Current Detection Voltage (typ.)[V]
0.5
VH Terminal UVLO
No
FET
External
Controller Type
PWM
Vin1(Min.)[V]
8.5
Vin1(Max.)[V]
25
SW Frequency (Max.)[kHz]
65
VCC OVP
Auto Restart
BR PIN
No
Channel
1
Light Load mode
Yes
EN
No
Soft Start
Yes
Thermal Shut-down
Auto Restart
Under Voltage Lock Out
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
2.9x2.8 (t=1.25)
Features:
- PWM frequency of 65kHz
- PWM current mode method
- Low circuit current when UVLO is ON (12µA at VCC=12V)
- Low circuit current without load (Burst operation when load is light)
- Built-in SW frequency hopping function
- 250ns leading-edge blanking
- VCC UVLO / OVP (Auto restart)
- Per-cycle over current protection circuit
- Soft start
- Output overload protection (Auto-restart protection)
- External stop function for COMP pin (Auto restart)
