NCP1398C

Resonant Mode Controller with HV Drivers

The NCP1398C is a resonant mode controller with hv drivers from onsemi. View the full NCP1398C datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

NCP1398C shares its datasheet with NCP1398B, whose page lists every part number it covers.

Official NCP1398C datasheet (PDF) — the source this page was extracted from.

Manufacturer

onsemi

NCP1398C Key Specifications

Parameter	Value
ESD HBM	2 kV
Controller Type	Half-bridge LLC resonant mode controller (NCP1398C version, no open-feedback fault timer)
Startup Current	620 µA max
Duty Cycle Symmetry	48% to 52%
VCC Operating Voltage	up to 20V
VCC Turn-On Threshold	9.7V to 11.3V (10.5V typ)
Dead-Time Adjust Range	100 ns to 2 µs
High Voltage Bridge Pin	-1V to 600V
Maximum Frequency Clamp	465 kHz to 585 kHz (525 kHz typ, RFmax = 7.2 kΩ)
Gate Driver Peak Current	1 A sink / 0.5 A source
Storage Temperature Range	-60 °C to +150 °C
Switching Frequency Range	50 kHz to 750 kHz
Minimum Frequency Accuracy	±3%
Driver Rise/Fall Time (1 NF)	40 ns / 20 ns
Maximum Junction Temperature	150 °C
Output Source/Sink Resistance	13 Ω / 5.5 Ω
VCC Minimum Operating Voltage	8.7V to 10.3V (9.5V typ)
Junction Temperature Range (Spec)	-40 °C to +125 °C
Operating Current (1 NF Load, 300 KHz)	13.3 mA typ
Floating Supply Voltage (VBOOT-VBRIDGE)	0V to 20V
Thermal Resistance Junction-To-Air (SOIC)	130 °C/W

NCP1398C Overview

Part: NCP1398B/C — onsemi

Type: Resonant Mode (LLC) Controller with Integrated High-Voltage Gate Drivers

Description: High performance half-bridge LLC resonant controller with a 50–750 kHz switching range, ±3% accurate minimum-frequency clamp, 600 V high-side driver and 1 A / 0.5 A peak sink/source drive capability.

Operating Conditions:

Supply voltage: VCC turn-on at 10.5 V typ (9.7–11.3 V); minimum operating voltage after turn-on 9.5 V typ (8.7–10.3 V); up to 20 V
Junction temperature (min/max specs): -40 to +125 °C
Switching frequency: 50 kHz to 750 kHz

Absolute Maximum Ratings:

Max supply voltage (VCC and FB pins): 20 V
High-voltage bridge pin: -1 to 600 V
Floating supply (VBOOT - VBRIDGE): 0 to 20 V
Storage temperature: -60 to +150 °C
ESD: HBM 2 kV (except pins 14, 15, 16); Machine Model 200 V

Key Specs:

Startup current (VCC < VCC ON): 620 μA max
Supply current, no load, Fsw = 300 kHz: 5.1 mA typ; with 1 nF load: 13.3 mA typ
Fault/disable mode consumption: 1.05 mA typ; skip mode: 2.2 mA typ
Minimum switching frequency (Rt = 31 kΩ): 60 kHz typ (57.2–61.8 kHz over -40 to 125 °C)
Maximum frequency clamp (Rfmax = 7.2 kΩ): 525 kHz typ (465–585 kHz)
Dead time (RDT = 10 kΩ): 290 ns typ (250–340 ns); adjustable from 100 ns to 1.9 μs
Driver rise/fall time (1 nF): 40 ns / 20 ns typ; ROH 13 Ω, ROL 5.5 Ω
Brown-out threshold: 1.008 V typ (0.98–1.08 V); thermal shutdown 140 °C min with 30 °C hysteresis

Features:

Adjustable minimum switching frequency with ±3% accuracy
Adjustable dead time and externally adjustable soft-start
Precise, high-impedance brown-out protection
Latched input for severe faults (e.g. over temperature, OVP)
Latched output short-circuit protection
Timer-based auto-recovery overcurrent protection
Open feedback loop protection (NCP1398B)
Skip mode with adjustable hysteresis
Disable input for ON/OFF control
Common collector optocoupler connection for easier ORing
Internal temperature shutdown
Pb-free and halogen-free

Applications:

High power AC/DC adapters
Flat panel display power converters
Computing power supplies
Offline battery chargers
Industrial and medical power sources

Package:

SOIC-16 NB, less pin 13 (D suffix, case 751AM)

NCP1398C Features

Adjustable Minimum Switching Frequency with ± 3% Accuracy
High -Frequency Operation from 50 kHz up to 750 kHz
Adjustable Dead -Time
Precise and High Impedance Brown -Out Protection
Startup Sequence Via an Externally Adjustable Soft -Start
Latched Input for Severe Fault Conditions, e.g. Over Temperature or OVP
Latched Output Short -Circuit Protection
Timer -Based Auto -Recovery Overcurrent Protection
Open Feedback Loop Protection for NCP1398B Version
Skip Mode with Adjustable Hysteresis
Disable Input for ON/OFF Control
VCC Operation up to 20 V
Common Collector Optocoupler Connection for Easier ORing
1 A / 0.5 A Peak Current Sink / Source Drive Capability
Internal Temperature Shutdown
Designed with Open Pin Testing Safety Considerations
Designed with Pin -to -Adjacent -Pin Short Testing Safety Considerations
These Devices are Pb -Free and Halogen Free/BFR Free

NCP1398C Applications

High Power AC/DC Adapters
Flat panel Display Power Converters
Computing Power Supplies
Offline Battery Chargers
Industrial and Medical Power Sources

http://onsemi.com

SOIC -16 NB, Less Pin 13 D SUFFIX CASE 751AM

NCP1398C Pin Configuration

Pin N 5	Pin Name	Function	Pin Description
1	BO	Brown - Out	Detects low input voltage conditions. When brought above Vlatch (4V), fully latches off the controller.
2	Ctimer	Fault timer duration	Sets the fault timer and auto - recovery durations
3	Discharge	Overload protection	Implements frequency shift in case of overload.
4	Fmax	Maximum frequency clamp	A resistor connected between this pin and GND sets the maximum fre- quency excursion. Controller enters skip mode and disables drivers if the operating frequency exceeds this adjusted value.
5	Rt	Minimum frequency clamp	Connecting a resistor to this pin, sets the minimum oscillator frequency reached for VFB = 1.1 V. Discharge OCP and Soft Start networks before startup or reset.
6	DT	Dead - time adjust	A simple resistor adjusts the dead - time
7	FB	Feedback	Voltage on this pin modulates operating frequency between adjusted Fmin and Fmax clamps. Starts Fault timer when FB voltage stays below 0.28 V - function not active on NCP1398C version.
8	Skip/Disable	Skip or Disable input	Defines frequency and thus also FB voltage under which the controller returns from skip mode. Upon release, a clean startup sequence occurs if VFB < 0.28 V. During the skip mode, when FB doesn't drop below 0.28 V, the IC restarts without soft start sequence.
9	OLP	Overload protection detection input	Initiates fault timer when asserted. Increases operating frequency via discharge pin to protect application power stage. This input features also latch fault comparator that latches off the IC permanently.
10	Mlower	Low side output	Drives the lower side MOSFET
11	GND	IC ground	-
12	V CC	Supplies the controller	The controller accepts up to 20 V
13	NC	Not connected	Increases the creepage distance
15	Mupper	High side output	Drives the higher side MOSFET
14	HB	Half - bridge connection	Connects to the half - bridge output
16	Vboot	Bootstrap pin	The floating V CC supply for the upper stage

Figure 2. Internal Circuit Architecture - NCP1398C

Figure 3. Internal Circuit Architecture - NCP1398B

NCP1398C Electrical Characteristics

(For typical values T J = 25 ° C, for min/max values T J = -40 ° C to +125 ° C, Max T J = 150 ° C, V CC = 12 V unless otherwise noted)

Symbol	Rating	Pin	Min	Typ	Max	Unit
SUPPLY SECTION
VCC ON	Turn - on threshold level, Vcc going up	12	9.7	10.5	11 . 3	V
VCC (min)	Minimum operating voltage after turn - on	12	8.7	9.5	10.3	V
Vboot ON	Startup voltage on the floating section	16 - 15	8	9	10	V
Vboot (min)	Cutoff voltage on the floating section	16 - 15	7.4	8.4	9.4	V
Istartup	Startup current, V CC < VCC ON	12	-	-	620	m A
VCC reset	V CC level at which the internal logic gets reset	12	-	6.6	-	V
ICC1+Iboot1	Internal IC consumption, no output load on pin 15/14 - 11/10, Fsw = 300 kHz, Rdt = 10 k W , RT = 31 k W , RFmax = 7.2 k W , RSkip/Disable = 7.9 k W , VFb = 3.6 V	12 - 11 16 - 15	-	5.1	-	mA
ICC2+Iboot2	Internal IC consumption, 1 nF output load on pin 15/14 - 11/10, Fsw = 300 kHz, Rdt = 10 k W , RT = 31 k W , RFmax = 7.2 k W , RSkip/Disable = 7.9 k W , VFb = 3.6 V	12 - 11 16 - 15	-	13.3	-	mA
ICC3+Iboot3	Consumption in fault or disable mode, All drivers disabled, Rdt =10 k W , RFmin = 31 k W , RFmax = 7.2 k W , RSkip/Disable = 7.9 k W , VFb = 1 V	12 - 11 16 - 15	-	1.05	-	mA
ICC4+Iboot4	Consumption in skip mode , All drivers disabled, Rdt =10 k W , RFmin = 31 k W , RFmax = 7.2 k W , RSkip/Disable = 7.9 k W , VFb = 5.7 V	12 - 11 16 - 15	-	2.2	-	mA
VOLTAGE CONTROL OSCILLATOR (VCO)	VOLTAGE CONTROL OSCILLATOR (VCO)
Fsw_min	Minimum switching frequency, Rt = 31 k W on pin 5, Vpin 7 = 0.8 V, DT = 300 ns 0 to 125 ° C - 40 to 125 ° C	5	58.2 57.2	60 60	61.8 61.8	kHz

Guaranteed by design.
Not tested for NCP1398C.

NCP1398C Absolute Maximum Ratings

Rating	Symbol	Value	Unit
High Voltage bridge pin	VBRIDGE	- 1 to 600	V
Floating supply voltage	VBOOT - VBRIDGE	0 to 20	V
High side output voltage	VDRV_HI	VBRIDGE - 0.3 to VBOOT+0.3	V
Low side output voltage	VDRV_LO	- 0.3 to V CC + 0.3	V
Allowable output slew rate	dV BRIDGE /dt	50	V/ns
FB and V CC pin voltage (pins 7 and 12)	V CC	- 0.3 to 20	V
Maximum voltage, all pins (except pins 7, 12, 14, 15 and 16)	-	- 0.3 to 10	V
Thermal Resistance Junction - to - Air, PDIP version	R q J - A	100	° C/W
Thermal Resistance Junction - to - Air, SOIC version	R q J - A	130	° C/W
Storage Temperature Range	-	- 60 to +150	° C
ESD Capability, HBM model , Except pins 14, 15, 16	-	2	kV
ESD Capability, Machine Model	-	200	V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.

This device(s) contains ESD protection and exceeds the following tests: Human Body Model 2000 V per JEDEC Standard JESD22 -A114E

Machine Model 200 V per JEDEC Standard JESD22 -A115 -A

This device meets latch -up tests defined by JEDEC Standard JESD78.

NCP1398C Typical Application

High Power AC/DC Adapters
Flat panel Display Power Converters
Computing Power Supplies
Offline Battery Chargers
Industrial and Medical Power Sources

http://onsemi.com

SOIC -16 NB, Less Pin 13 D SUFFIX CASE 751AM

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part Number	Manufacturer	Package
NCP1398B	onsemi	—

Other Power Management

MX74610T – MaxLinear, Ideal Diode Controller
MAX17048 – Analog Devices, Micropower Current Fuel Gauge
WRB0505S-3WR3H – unknown, Isolated DC-DC Converter
ADE7953ACPZ-RL – Analog Devices, Single-Phase Energy Metering IC
EFP0101 – Silicon Labs, Multi-Output Energy Friendly PMIC
EFP0102 – Silicon Labs, Energy Friendly Multi-Output PMIC
EFP0103 – Silicon Labs, Multi-Output Energy Friendly PMIC
EFP0104 – Silicon Labs, Energy Friendly PMIC

All Power Management datasheets All onsemi datasheets (337)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

Ask your AI agent about the NCP1398C

Connect SheetsData to Claude, Cursor, Codex or any MCP client and your agent reads this datasheet for you: pinout, limits, register maps and design checks, with the numbers taken from the PDF.

claude mcp add --transport http sheetsdata https://mcp.sheetsdata.com/mcp

Then ask: "Can the NCP1398C run from my 12 V rail? Check it against the datasheet limits."

Create a free account $2 of usage every month, no card needed.